A downhole system has a plurality of telemetry systems and a control system configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system and how the information is to be transmitted on the given telemetry system.
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/14 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
H04B 3/54 - Systems for transmission via power distribution lines
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
2.
Automated drilling methods and systems using real-time analysis of drill string dynamics
Methods and apparatus for identifying downhole dynamics in a drilling system are provided. Acceleration-detecting sensors are mounted at multiple locations near to a drill bit, such as at a drill collar. The sensors may be spaced 90° apart along a circumference of the drill collar. The sensors detect acceleration measurements in a plane orthogonal to the drill string's axis of rotation, with respect to a first reference frame that moves with the drill string. The acceleration measurements are received by a processor and processed to determine rotational and revolution positions of the drill string within the wellbore with respect to a static reference frame. Whirl dynamics may, in particular, be determined based on the results in real time.
A gap sub assembly for electromagnetic telemetry used in downhole drilling. The gap sub comprises a female part comprising a female mating section and a male part comprising a male mating section. The male mating section is matingly received within the female mating section and electrically isolated therefrom. One or more electrically insulating bodies secure the male part axially and torsionally relative to the female part. The electrically insulating bodies also electrically isolate the male part from the female part. The electrically insulating bodies can be installed through apertures in the female part or at least some of the electrically insulating bodies can be installed before the male mating section is inserted into the female mating section. The electrically insulating bodies can be held in place on the male mating section using a retention apparatus such as a ring, a scarf, pods or an adhesive.
H01B 3/12 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of inorganic substances ceramics
F16L 25/01 - Construction or details of pipe joints not provided for in, or of interest apart from, groups specially adapted for realising electrical conduction between the two pipe ends of the joint or between parts thereof
A downhole system has a plurality of telemetry systems and a control system configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system and how the information is to be transmitted on the given telemetry system.
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/14 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
H04B 3/54 - Systems for transmission via power distribution lines
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
5.
Automated drilling methods and systems using real-time analysis of drill string dynamics
Methods and apparatus for identifying downhole dynamics in a drilling system are provided. Acceleration-detecting sensors are mounted at multiple locations near to a drill bit, such as at a drill collar. The sensors may be spaced 90° apart along a circumference of the drill collar. The sensors detect acceleration measurements in a plane orthogonal to the drill string's axis of rotation, with respect to a first reference frame that moves with the drill string. The acceleration measurements are received by a processor and processed to determine rotational and revolution positions of the drill string within the wellbore with respect to a static reference frame. Whirl dynamics may, in particular, be determined based on the results in real time.
A fluid pressure pulse generator apparatus for a telemetry tool comprising a stator and a rotor. The stator comprises a stator body and a plurality of radially extending stator projections spaced around the stator body and the spaced stator projections define stator flow channels extending therebetween. The rotor comprises a rotor body and a plurality of radially extending rotor projections spaced around the rotor body. The rotor projections are axially adjacent the stator projections and the rotor is rotatable relative to the stator such that the rotor projections move in and out of fluid communication with the stator flow channels to create fluid pressure pulses in fluid flowing through the stator flow channels. At least one of the rotor projections and at least one of the stator projections has a standard outer diameter. At least one of the rotor projections and/or at least one of the stator projections has a reduced outer diameter. The reduced outer diameter rotor and/or stator projections provide bypass channels for flow of fluid and allow for generation of a pattern of different fluid pressure pulses.
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
An active downhole antenna located in a borehole receives electromagnetic (EM) telemetry transmissions from sources in adjacent boreholes. The antenna comprises a processor operable do decode and measure signal to noise ratio of received transmissions. Data received at the active antenna is transmitted to surface using a high-speed data communication network. The active antenna may handle data communications from multiple downhole EM telemetry transmitters.
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
H04B 13/02 - Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
H04B 17/309 - Measuring or estimating channel quality parameters
E21B 47/14 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinationsPosition-fixing by co-ordinating two or more distance determinations using radio waves
G01S 11/06 - Systems for determining distance or velocity not using reflection or reradiation using radio waves using intensity measurements
H04L 1/00 - Arrangements for detecting or preventing errors in the information received
8.
Downhole probe sleeves and methods for making probe sleeves
A downhole probe of a drilling rig has a probe sleeve for protecting the downhole probe. The probe sleeve may be made of a metal or a polymer such as polyphenylene sulfide. The probe sleeve may be heat-shrinkable to provide a tight fit between the downhole probe and the probe sleeve. The probe sleeve may include one or more protrusions shaped to engage a centralizer surrounding at least part of the downhole probe. The one or more protrusions may be arranged to prevent rotation of the centralizer relative to the probe sleeve. The probe sleeve may be made using a modified extrusion process and may include reinforcement to add strength to weld-lines along the length of the probe sleeve. The protrusions may also be used as reinforcement.
B29C 48/09 - Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
B29C 48/88 - Thermal treatment of the stream of extruded material, e.g. cooling
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
One or more seals may be provided in a gap sub to prevent the ingress of drilling fluid into an insulating gap between a male member of the gap sub and a female member of the gap sub. A first seal may comprise an internal gap sub seal provided near the tip of the male member of the gap sub. A second seal may comprise an external gap sub seal provided near the tip of the female member of the gap sub. The first and second seals may comprise non-conductive materials. The first and second seals may each comprise one or more O-rings. The first and second seals may comprise one or more lips, protrusions or flanges to engage the male and/or female members of the gap sub for maintaining contact with the male and/or female members during deformation of the gap sub.
F16L 25/02 - Construction or details of pipe joints not provided for in, or of interest apart from, groups specially adapted for electrically insulating the two pipe ends of the joint from each other
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
10.
Integrated downhole system with plural telemetry subsystems
A downhole system has a plurality of telemetry systems and a control system configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system and how the information is to be transmitted on the given telemetry system.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/14 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
H04B 3/54 - Systems for transmission via power distribution lines
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
An assembly for receiving telemetry signals from downhole equipment is located at a top end of a drill string above a drill rig floor. The assembly may be configured to receive multiple types of telemetry signals, for example, two or more of electromagnetic telemetry, mud pulse telemetry and drill string acoustic telemetry signals. The assembly may comprise a cap comprising a coupling and an end separated by an electrically-insulating gap region. The end of the cap may be connected to a grounding system for the drill rig.
G01V 3/00 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
H04L 29/08 - Transmission control procedure, e.g. data link level control procedure
H04Q 9/00 - Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
A downhole system has a plurality of telemetry systems and a control system configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system and how the information is to be transmitted on the given telemetry system.
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/14 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
H04B 3/54 - Systems for transmission via power distribution lines
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
An assembly for use in subsurface drilling includes a downhole probe supported by a centralizer. The centralizer comprises a tubular member that extends around the downhole probe. A wall of the centralizer is fluted to provide inward contact points that support the downhole probe and outward contact points that bear against a bore wall of a section of drill string. The downhole probe may be supported for substantially its entire length.
E21B 23/01 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
E21B 23/02 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for locking the tools or the like in landing nipples or in recesses between adjacent sections of tubing
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
E21B 7/00 - Special methods or apparatus for drilling
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
E21B 47/135 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range using light waves, e.g. infrared or ultraviolet waves
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
14.
Method and apparatus for placing receiver electrodes for EM telemetry transmissions
A vehicle for detecting fields relevant to the suitability of a location for EM telemetry reception. The vehicle may include a magnetometer, a voltage monitoring system and position sensors. A wireless transmitter may transmit readings from the meters, monitoring systems and/or sensors to a receiver. The vehicle may include equipment for inserting or removing ground conductors for use in receiving electromagnetic telemetry signals. The vehicle may be driven or may drive itself autonomously. The vehicle may obtain measurements of magnetic field and/or potential differences at spaced apart locations along a path. Data obtained by the vehicle may be analyzed to identify hot spots. After selecting hot spots, the vehicle may be configured to insert ground conductors at selected locations within the hot spots. After installing ground rods, the vehicle may be configured to continuously monitor the area to maintain an optimum configuration of ground conductors.
G01V 3/17 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with electromagnetic waves
G01V 3/30 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with electromagnetic waves
G01V 3/34 - Transmitting data to recording or processing apparatusRecording data
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
15.
Seal and sacrificial components for a drill string
A gap joint for use with a gap sub for electromagnetic telemetry. The gap joint has a replaceable uphole shoulder on the male gap joint component, which may be composed of a sacrificial material, to extend gap joint useful life where there is electrolysis of the component outside diameter. The gap joint also has a thicker outside diameter seal to reduce the risk of underlying O-ring extrusion and failure, again extending gap joint useful life. The thicker seal may also be able to withstand higher pressures before collapsing or experiencing punctures in unsupported areas. The replaceable shoulder and outside diameter seal can be used separately or together in a gap joint.
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
16.
Optimizing downhole data communication with at bit sensors and nodes
Data is communicated from sensors at a downhole location near a drill bit to surface equipment. Communication to the surface equipment may be direct or may pass through a series of nodes. The nodes in some cases are intelligently reconfigured to achieve desired data rates, achieve power management goals, and/or compensate for failed nodes.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
A fluid pressure pulse generator for a telemetry tool comprising a stator and a rotor. The stator comprising a stator body and a plurality of radially extending stator projections spaced around the stator body, whereby adjacently spaced stator projections define stator flow channels extending therebetween. The rotor comprising a rotor body and a plurality of radially extending rotor projections spaced around the rotor body. The rotor projections are axially adjacent the stator projections and the rotor is rotatable relative to the stator such that the rotor projections move in and out of fluid communication with the stator flow channels to generate fluid pressure pulses in fluid flowing through the stator flow channels. At least one of the rotor projections has an angled rotor bypass channel which moves in and out of fluid communication with the stator flow channels as the rotor rotates relative to the stator, the angled rotor bypass channel extending through or along a surface of the at least one rotor projection and having a fluid inlet and a fluid outlet downhole and lateral relative to the fluid inlet. The angled rotor bypass channel providing a self-correction mechanism causing the rotor to rotate to an open flow position when there is failure of the telemetry tool.
E21B 34/08 - Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/14 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
An assembly for securing a probe retention member at a desired location within a tubular interior such as in a drill string collar. The assembly may use one or more securing members external to the retention member. In some embodiments most of the stresses from the probe retention structures of the retention member are isolated.
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
E21B 23/03 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting the tools into, or removing the tools from, laterally offset landing nipples or pockets
F16D 1/08 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hubCouplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with hub and longitudinal key
A method for establishing downlink telemetry communication to a downhole system involves placing into a drillstring a telemetry transcoder, and advancing the drillstring so the telemetry transcoder is below the surface. The method then transmits downlink EM telemetry signals from surface equipment. These signals are received at the telemetry transcoder which retransmits the signals as mud pulse signals. The mud pulse signals are received at the downhole system.
G01V 1/44 - SeismologySeismic or acoustic prospecting or detecting specially adapted for well-logging using generators and receivers in the same well
G01V 3/30 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with electromagnetic waves
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/10 - Locating fluid leaks, intrusions or movements
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
A downhole system comprises a main sensor, such as a gamma sensor, and a backup sensor. The backup sensor may be of a different type from the main sensor. In some embodiments the backup sensor is a high reliability sensor that may have a different sensitivity from the main sensor. The system operates both the main and backup sensors and generates calibration data for the backup sensor. If the main sensor fails the calibration data may be applied to process data from the backup sensor to yield an estimate of the data that the main sensor would have yielded if it had remained operational. The calibration data may compensate for temperature variations and/or temporal drift, for example.
G01V 13/00 - Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
G01V 5/04 - Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging
G01T 7/00 - Details of radiation-measuring instruments
G01V 5/12 - Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays using gamma- or X-ray sources
An assembly for use in subsurface drilling includes a downhole probe supported in a drill string section by centralizing features of a centralizer that is slidably removable from the drill string section. The centralizer may comprise a tubular body having a bore defined through it. A bore wall of the centralizer is fluted to provide inward contact points that support the downhole probe. The downhole probe may be supported for substantially its entire length. The centralizer may optionally comprise and/or be coated with a vibration damping and/or electrically insulating material.
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
An assembly for use in subsurface drilling includes a downhole probe supported by a centralizer. The centralizer comprises a tubular member that extends around the downhole probe. A wall of the centralizer is fluted to provide inward contact points that support the downhole probe and outward contact points that bear against a bore wall of a section of drill string. The downhole probe may be supported for substantially its entire length.
E21B 23/01 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
E21B 23/02 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for locking the tools or the like in landing nipples or in recesses between adjacent sections of tubing
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
E21B 7/00 - Special methods or apparatus for drilling
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
23.
Downhole electromagnetic and mud pulse telemetry apparatus
A measurement-while-drilling (MWD) telemetry system comprises a downhole MWD telemetry tool comprising a mud pulse (MP) telemetry unit and an electromagnetic (EM) telemetry unit. The MWD telemetry tool can be configured to transmit data in an EM-only telemetry mode using only the EM telemetry unit, in an MP-only mode using only the MP telemetry unit, or in a concurrent telemetry mode using both the EM and MP telemetry units concurrently. When transmitting data in the concurrent telemetry mode, the telemetry tool can be configured to transmit in a concurrent confirmation mode wherein the same telemetry data is transmitted by each of the EM and MP telemetry units, or in a concurrent shared mode wherein some of the telemetry data is transmitted by the EM telemetry unit, and the rest of the telemetry data is transmitted by the MP telemetry unit. The telemetry tool can be programmed to change its operating telemetry mode in response to a downlink command sent by an operator at surface.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
Apparatus for measuring surface profiles within passages such as the interiors of pipes, tubing, casing or the like includes an optical scanning system that acquires digital data that directly identifies the surface profiles. A temperature control system facilitates operation in high temperature environments. The optical scanning system may include a camera located between a light source and a conical mirror. Light deflecting elements may guide light from the light source to the conical mirror along a path that reverses direction.
G02B 23/02 - Telescopes, e.g. binocularsPeriscopesInstruments for viewing the inside of hollow bodiesViewfindersOptical aiming or sighting devices involving prisms or mirrors
G02B 23/24 - Instruments for viewing the inside of hollow bodies, e.g. fibrescopes
G01N 21/954 - Inspecting the inner surface of hollow bodies, e.g. bores
25.
Seal and sacrificial components for a drill string
A gap joint for use with a gap sub for electromagnetic telemetry. The gap joint has a replaceable uphole shoulder on the male gap joint component, which may be composed of a sacrificial material, to extend gap joint useful life where there is electrolysis of the component outside diameter. The gap joint also has a thicker outside diameter seal to reduce the risk of underlying O-ring extrusion and failure, again extending gap joint useful life. The thicker seal may also be able to withstand higher pressures before collapsing or experiencing punctures in unsupported areas. The replaceable shoulder and outside diameter seal can be used separately or together in a gap joint.
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
Connectors and connection systems for connecting two tubing sections together are provided. The connectors can include: a first end having an outer surface and adapted for insertion into an end of the tubing section and a second end adapted for connection to a second connector. The connector can have an attachment block in one aspect with a first threaded aperture and a second threaded aperture passing through it so that axial screws and radial screws can secure the connector to the end of a tubing section before it is connected to another connector. In another aspect, the connector can have an attachment slot provided in an outer surface of the first end of the connector sized to fit a retaining clips so that axial screws can secure the connector to an end of a tubing section before the connector is connected to another connector.
Connectors and connection systems for connecting two tubing sections together are provided. The connectors can include: a first end having an outer surface and adapted for insertion into an end of the tubing section and a second end adapted for connection to a second connector. The connector can have an attachment block in one aspect with a first threaded aperture and a second threaded aperture passing through it so that axial screws and radial screws can secure the connector to the end of a tubing section before it is connected to another connector. In another aspect, the connector can have an attachment slot provided in an outer surface of the first end of the connector sized to fit a retaining clips so that axial screws can secure the connector to an end of a tubing section before the connector is connected to another connector.
E21B 17/046 - CouplingsJoints between rod and bit, or between rod and rod with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod
F16L 21/08 - Joints with sleeve or socket with additional locking means
H02G 3/06 - Joints for connecting lengths of protective tubing to each other or to casings, e.g. to distribution boxEnsuring electrical continuity in the joint
09 - Scientific and electric apparatus and instruments
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Providing downhole-to-surface, surface-to-downhole and/or downhole-to-downhole data telemetry and data processing for the oil and gas industry, namely, telemetric communication in the nature of electronic transmission of data for the purpose of providing guidance and geological feedback during oil and gas exploration and production Downhole drilling hardware and equipment for oil and gas exploration and/or production, namely, centralizers for downhole tools, downhole collars, gap subs, and carriers for lifting downhole tools Downhole survey and measurement hardware and equipment for oil and gas exploration and/or production, namely data telemetry transmitters, data telemetry receivers, surface equipment for transmitting and receiving data telemetry, automated control systems, electronic interfaces for control systems, pulse valves, short hop transmitters and receivers, sensors, connectivity devices for establishing downhole networks, and downhole measurement and logging tools comprising sensors and data telemetry components; computer software for collecting, processing, reporting, and reviewing data collected by downhole sensors in hardware and equipment for oil and gas exploration and/or production; kits comprising one or more of the foregoing goods; parts and fittings for the foregoing goods Oil and gas well drilling services; oil and gas well production and completion monitoring services; rental of hardware and equipment for oil and gas exploration and/or production, namely data telemetry transmitters, data telemetry receivers, centralizers for downhole tools, surface equipment for transmitting and receiving data telemetry, automated control systems, electronic interfaces for control systems, pulse valves, short hop transmitters and receivers, sensors, downhole collars, including gap subs, carriers for lifting downhole tools, connectivity devices for establishing downhole networks, downhole measurement and logging tools comprising sensors and data telemetry components, and kits comprising one or more of the foregoing goods; repair, maintenance and cleaning of hardware and equipment for oil and gas exploration and/or production, namely data telemetry transmitters, data telemetry receivers, centralizers for downhole tools, surface equipment for transmitting and receiving data telemetry, automated control systems, electronic interfaces for control systems, pulse valves, short hop transmitters and receivers, sensors, downhole collars, including gap subs, carriers for lifting downhole tools, connectivity devices for establishing downhole networks, downhole measurement and logging tools comprising sensors and data telemetry components, and kits comprising one or more of the foregoing goods Engineering services for the oil and gas industry; custom design and development of technological solutions for the oil and gas industry; oil and gas well logging services; technical support services in the nature of customer support services for hardware and equipment for oil and gas exploration and/or production; tracking and analyzing data relating to the performance, reliability, location and troubleshooting of hardware and equipment for oil and gas exploration and/or production
An electromagnetic telemetry system adjusts telemetry parameters which may include carrier frequency, signal amplitude and/or data encoding protocol to achieve reliable data transmission and to conserve power. In some embodiments, sweep signals transmit a range of carrier frequencies and the parameters are determined in part by analyzing the received sweep signals. In some embodiments, different parameters are selected automatically based on a mode of drilling.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
H04B 17/336 - Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
H04Q 9/00 - Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
H04W 52/24 - TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
Arrangements for retaining coiled battery internals in a coiled orientation within a cell casing, in which end caps and/or sleeves are provided with at least one inward-facing protuberance for engaging and securing the coiled battery internals, and means for securing and aligning pouch cell batteries within a sleeve.
Arrangements for retaining coiled battery internals in a coiled orientation within a cell casing, in which end caps and/or sleeves are provided with at least one inward-facing protuberance for engaging and securing the coiled battery internals, and means for securing and aligning pouch cell batteries within a sleeve.
Arrangements for retaining coiled battery internals in a coiled orientation within a cell casing, in which end caps and/or sleeves are provided with at least one inward-facing protuberance for engaging and securing the coiled battery internals, and means for securing and aligning pouch cell batteries within a sleeve.
E21B 41/00 - Equipment or details not covered by groups
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
H01M 50/14 - Primary casingsJackets or wrappings for protecting against damage caused by external factors
A gap sub assembly for electromagnetic telemetry used in downhole drilling. The gap sub comprises a female part comprising a female mating section and a male part comprising a male mating section. The male mating section is matingly received within the female mating section and electrically isolated therefrom. One or more electrically insulating bodies secure the male part axially and torsionally relative to the female part. The electrically insulating bodies also electrically isolate the male part from the female part. The electrically insulating bodies can be installed through apertures in the female part or at least some of the electrically insulating bodies can be installed before the male mating section is inserted into the female mating section. The electrically insulating bodies can be held in place on the male mating section using a retention apparatus such as a ring, a scarf, pods or an adhesive.
H01B 3/12 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of inorganic substances ceramics
F16L 25/01 - Construction or details of pipe joints not provided for in, or of interest apart from, groups specially adapted for realising electrical conduction between the two pipe ends of the joint or between parts thereof
A wireless communications system for a downhole drilling operation comprises surface communications equipment and a downhole telemetry tool. The surface communications equipment comprises a surface EM communications module with an EM downlink transmitter configured to transmit an EM downlink transmission at a frequency between 0.01 Hz and 0.1 Hz. The downhole telemetry tool is mountable to a drill string and has a downhole electromagnetic (EM) communications unit with an EM downlink receiver configured to receive the EM downlink transmission. The downhole EM communications unit can further comprise an EM uplink transmitter configured to transmit an EM uplink transmission at a frequency greater than 0.5 Hz, in which case the surface EM communications module further comprises an EM uplink receiver configured to receive the EM uplink transmission. More particularly, the downhole EM uplink transmitter can be configured to transmit the EM uplink transmission at a frequency that is at least ten times higher than the EM downlink transmission frequency.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
G01V 3/26 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device
G01V 3/30 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with electromagnetic waves
G01V 3/34 - Transmitting data to recording or processing apparatusRecording data
35.
AUTOMATED DRILLING METHODS AND SYSTEMS USING REAL-TIME ANALYSIS OF DRILL STRING DYNAMICS
Methods and apparatus for identifying downhole dynamics in a drilling system are provided. Acceleration-detecting sensors are mounted at multiple locations near to a drill bit, such as at a drill collar. The sensors may be spaced 90° apart along a circumference of the drill collar. The sensors detect acceleration measurements in a plane orthogonal to the drill string's axis of rotation, with respect to a first reference frame that moves with the drill string. The acceleration measurements are received by a processor and processed to determine rotational and revolution positions of the drill string within the wellbore with respect to a static reference frame. Whirl dynamics may, in particular, be determined based on the results in real time.
E21B 44/00 - Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systemsSystems specially adapted for monitoring a plurality of drilling variables or conditions
E21B 7/00 - Special methods or apparatus for drilling
G01L 3/26 - Devices for measuring efficiency, i.e. the ratio of power output to power input
G01L 5/26 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining the characteristic of torque in relation to revolutions per unit of time
36.
ELECTROMAGNETIC COMMUNICATIONS SYSTEM AND METHOD FOR A DRILLING OPERATION
A wireless communications system for a downhole drilling operation comprises a drill string, surface communications equipment, and a downhole telemetry tool. The surface communications equipment comprises a surface EM communications module with an EM downlink transmitter configured to transmit through at least a portion of the drill string an EM downlink transmission at a frequency between 0.5 Hz and 180 kHz. The downhole telemetry tool is mountable to a drill string and has a downhole electromagnetic (EM) communications unit with an EM downlink receiver configured to receive the EM downlink transmission. The downhole EM communications unit can further comprise an EM uplink transmitter configured to transmit an EM uplink transmission at a frequency between 0.5 Hz and 180 kHz, in which case the surface EM communications module further comprises an EM uplink receiver configured to receive the EM uplink transmission.
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
G08C 17/02 - Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
H04B 7/24 - Radio transmission systems, i.e. using radiation field for communication between two or more posts
A downhole system provides a data interface to a first downhole tool such as a steerable rotary tool. The data interface uses a close proximity data connection such as a connection between inductive loops or coils or a direct wired or optical connection. The interface provides data to a second downhole tool in a drill string section adjacent to the first downhole tool. In some embodiments data is passed to a third downhole tool that includes a telemetry transmitter. The third downhole tool may comprise a MWD (measurement while drilling) tool.
E21B 17/03 - CouplingsJoints between drilling rod or pipe and drill motor, e.g. between drilling rod and hammer
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
A seal and seal assembly for a fluid pressure pulse generating tool. The seal comprises an annular seal section comprising an internal sealing surface and an external sealing surface; and an annular heel section. The seal assembly comprises a seal assembly housing with a longitudinally extending bore therethrough for receiving a driveshaft of the tool and the seal enclosed by the seal assembly housing and configured to surround a portion of the driveshaft. The internal sealing surface of the seal is configured to be in sealing contact with the driveshaft and the external sealing surface of the seal is configured to be in sealing contact with an internal surface of the seal assembly housing. The annular heel section of the seal is configured to provide an interference fit with the driveshaft or with the internal surface of the seal assembly housing.
G01V 1/137 - Generating seismic energy using fluidic driving means, e.g. using highly pressurised fluids which fluids escape from the generator in a pulsating manner, e.g. for generating bursts
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
A telemetry system with a plurality of controllers and telemetry systems, where the controllers are configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system.
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/024 - Determining slope or direction of devices in the borehole
E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
A method for using a downhole probe. The method comprises providing a probe, at least one vertical cross section of the probe having an area of at least pi inches squared. The method further comprises inserting the probe into a bore of a drill collar and passing a drilling fluid through the bore of drill collar at a flow velocity of less than 41 feet per second.
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
An active downhole antenna located in a borehole receives electromagnetic (EM) telemetry transmissions from sources in adjacent boreholes. The antenna comprises a processor operable to decode and measure signal to noise ratio of received transmissions. Data received at the active antenna is transmitted to surface using a high-speed data communication network. The active antenna may handle data communications from multiple downhole EM telemetry transmitters.
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
G01S 5/00 - Position-fixing by co-ordinating two or more direction or position-line determinationsPosition-fixing by co-ordinating two or more distance determinations
G01S 11/00 - Systems for determining distance or velocity not using reflection or reradiation
H04B 13/02 - Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
42.
Transmitting data across electrically insulating gaps in a drill string
A range of apparatus and methods for providing local and long range data telemetry within a wellbore is described. These apparatus and methods may be combined in a wide variety of ways. In some embodiments data is transmitted across a gap in a drill string using signals of a higher frequency for which an electrical impedance of the gap or of a filter connected across the gap is low. Low-frequency EM telemetry signals may be applied across the gap. The gap and any filter connected across the gap present a high impedance to the low-frequency EM telemetry signals. The described technology may be applied for transferring sensor readings between downhole electrical packages. In some embodiments sensors are electrically connected across electrically insulating gaps in the drill string.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
A fluid pressure pulse generator apparatus for a telemetry tool comprising a stator and a rotor. The stator comprises a stator body and a plurality of radially extending stator projections spaced around the stator body and the spaced stator projections define stator flow channels extending therebetween. The rotor comprises a rotor body and a plurality of radially extending rotor projections spaced around the rotor body. The rotor projections are axially adjacent the stator projections and the rotor is rotatable relative to the stator such that the rotor projections move in and out of fluid communication with the stator flow channels to create fluid pressure pulses in fluid flowing through the stator flow channels. At least one of the rotor projections and at least one of the stator projections has a standard outer diameter. At least one of the rotor projections and/or at least one of the stator projections has a reduced outer diameter. The reduced outer diameter rotor and/or stator projections provide bypass channels for flow of fluid and allow for generation of a pattern of different fluid pressure pulses.
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
E21B 44/00 - Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systemsSystems specially adapted for monitoring a plurality of drilling variables or conditions
44.
SYSTEM AND METHOD FOR DATA TELEMETRY AMONG ADJACENT BOREHOLES
An active downhole antenna located in a borehole receives electromagnetic (EM) telemetry transmissions from sources in adjacent boreholes. The antenna comprises a processor operable do decode and measure signal to noise ratio of received transmissions. Data received at the active antenna is transmitted to surface using a high-speed data communication network. The active antenna may handle data communications from multiple downhole EM telemetry transmitters.
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
H04B 13/02 - Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
G01S 5/00 - Position-fixing by co-ordinating two or more direction or position-line determinationsPosition-fixing by co-ordinating two or more distance determinations
G01S 11/00 - Systems for determining distance or velocity not using reflection or reradiation
45.
FLUID PRESSURE PULSE GENERATOR FOR A TELEMETRY TOOL
A telemetry tool comprising a pulser assembly and a fluid pressure pulse generator. The pulser assembly comprises a housing enclosing a motor and a driveshaft rotationally coupled to the motor. The fluid pressure pulse generator comprises a stator fixedly attached to the housing or to a drill collar housing the fluid pressure pulse generator and a rotor fixedly attached to the driveshaft. The stator has an angular movement restrictor window with a central window segment which axially and rotatably receives a rotatable member comprising at least a portion of the driveshaft and/or a portion of the rotor, and an indexing window segment in communication with the central window segment which receives an indexer protruding from the rotatable member received in the central window segment. The indexing window segment has an angular span across which the indexer can be oscillated by the driveshaft, whereby the angular span of the indexing window segment defines the range of angular movement of the rotor relative to the stator.
E21B 44/00 - Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systemsSystems specially adapted for monitoring a plurality of drilling variables or conditions
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
46.
SURFACE DISPLAY INTERFACE FOR DATA FROM DOWNHOLE SYSTEMS
Example embodiments of the described technology provide methods and apparatus for displaying data from downhole systems. A surface unit may receive the downhole data. An indicator identifying what data will be updated next may be displayed for an operator of a drill rig. The indicator may be based at least in part on a rate at which the downhole data is received at the surface unit. The methods and apparatus may facilitate efficient drilling operations.
E21B 41/00 - Equipment or details not covered by groups
E21B 44/00 - Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systemsSystems specially adapted for monitoring a plurality of drilling variables or conditions
One or more seals may be provided in a gap sub to prevent the ingress of drilling fluid into an insulating gap between a male member of the gap sub and a female member of the gap sub. A first seal may comprise an internal gap sub seal provided near the tip of the male member of the gap sub. A second seal may comprise an external gap sub seal provided near the tip of the female member of the gap sub. The first and second seals may comprise non-conductive materials. The first and second seals may each comprise one or more O-rings. The first and second seals may comprise one or more lips, protrusions or flanges to engage the male and/or female members of the gap sub for maintaining contact with the male and/or female members during deformation of the gap sub.
E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
F16L 25/02 - Construction or details of pipe joints not provided for in, or of interest apart from, groups specially adapted for electrically insulating the two pipe ends of the joint from each other
48.
DOWNHOLE PROBE SLEEVES AND METHODS FOR MAKING PROBE SLEEVES
A downhole probe of a drilling rig has a probe sleeve for protecting the downhole probe. The probe sleeve may be made of a metal or a polymer such as polyphenylene sulfide. The probe sleeve may be heat-shrinkable to provide a tight fit between the downhole probe and the probe sleeve. The probe sleeve may include one or more protrusions shaped to engage a centralizer surrounding at least part of the downhole probe. The one or more protrusions may be arranged to prevent rotation of the centralizer relative to the probe sleeve. The probe sleeve may be made using a modified extrusion process and may include reinforcement to add strength to weld-lines along the length of the probe sleeve. The protrusions may also be used as reinforcement.
E21B 44/00 - Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systemsSystems specially adapted for monitoring a plurality of drilling variables or conditions
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
One or more seals may be provided in a gap sub to prevent the ingress of drilling fluid into an insulating gap between a male member of the gap sub and a female member of the gap sub. A first seal may comprise an internal gap sub seal provided near the tip of the male member of the gap sub. A second seal may comprise an external gap sub seal provided near the tip of the female member of the gap sub. The first and second seals may comprise non-conductive materials. The first and second seals may each comprise one or more O-rings. The first and second seals may comprise one or more lips, protrusions or flanges to engage the male and/or female members of the gap sub for maintaining contact with the male and/or female members during deformation of the gap sub.
E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
F16L 25/02 - Construction or details of pipe joints not provided for in, or of interest apart from, groups specially adapted for electrically insulating the two pipe ends of the joint from each other
50.
Surface display interface for data from downhole systems
A telemetry system useful in drilling operations receives and displays telemetry data. The telemetry system also determines and displays information regarding the status of the telemetry transmission. The telemetry system may display which data will be updated next, when the update is expected to be complete, and how reliable is the currently displayed data. The system can facilitate efficient drilling operations.
G01V 3/00 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
A measurement-while-drilling (MWD) telemetry system comprises a downhole MWD telemetry tool comprising a mud pulse (MP) telemetry unit and an electromagnetic (EM) telemetry unit. The MWD telemetry tool can be configured to transmit data in an EM-only telemetry mode using only the EM telemetry unit, in an MP-only mode using only the MP telemetry unit, or in a concurrent telemetry mode using both the EM and MP telemetry units concurrently. When transmitting data in the concurrent telemetry mode, the telemetry tool can be configured to transmit in a concurrent confirmation mode wherein the same telemetry data is transmitted by each of the EM and MP telemetry units, or in a concurrent shared mode wherein some of the telemetry data is transmitted by the EM telemetry unit, and the rest of the telemetry data is transmitted by the MP telemetry unit. The telemetry tool can be programmed to change its operating telemetry mode in response to a downlink command sent by an operator at surface.
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
52.
DOWNHOLE PROBE SLEEVES AND METHODS FOR MAKING PROBE SLEEVES
A downhole probe of a drilling rig has a probe sleeve for protecting the downhole probe. The probe sleeve may be made of a metal or a polymer such as polyphenylene sulfide. The probe sleeve may be heat-shrinkable to provide a tight fit between the downhole probe and the probe sleeve. The probe sleeve may include one or more protrusions shaped to engage a centralizer surrounding at least part of the downhole probe. The one or more protrusions may be arranged to prevent rotation of the centralizer relative to the probe sleeve. The probe sleeve may be made using a modified extrusion process and may include reinforcement to add strength to weld-lines along the length of the probe sleeve. The protrusions may also be used as reinforcement.
E21B 44/00 - Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systemsSystems specially adapted for monitoring a plurality of drilling variables or conditions
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
One or more seals may be provided in a gap sub to prevent the ingress of drilling fluid into an insulating gap between a male member of the gap sub and a female member of the gap sub. A first seal may comprise an internal gap sub seal provided near the tip of the male member of the gap sub. A second seal may comprise an external gap sub seal provided near the tip of the female member of the gap sub. The first and second seals may comprise non-conductive materials. The first and second seals may each comprise one or more Orings. The first and second seals may comprise one or more lips, protrusions or flanges to engage the male and/or female members of the gap sub for maintaining contact with the male and/or female members during deformation of the gap sub.
A telemetry tool comprising a pulser assembly, a primary seal, a fluid pressure pulse generator and a secondary seal. The pulser assembly comprises a housing and a driveshaft extending out of an opening in the housing. The primary seal surrounds and seals against the driveshaft to seal the opening in the housing. The fluid pressure pulse generator comprises a stator with a bore therethrough configured to fixedly attach to the housing or to a drill collar surrounding the fluid pressure pulse generator, and a rotor fixedly attached to the driveshaft. The driveshaft and rotor rotate relative to the fixed stator to generate pressure pulses in mud flowing through the fluid pressure pulse generator. The secondary seal is seated in the stator bore and surrounds and seals against a portion of the driveshaft extended out of the housing or a portion of the rotor to reduce the amount of mud, grit and debris impinging on the primary seal which could otherwise cause wear or damage the primary seal.
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
55.
TELEMETRY TOOL WITH A FLUID PRESSURE PULSE GENERATOR
A telemetry tool comprising a pulser assembly, a primary seal, a fluid pressure pulse generator and a secondary seal. The pulser assembly comprises a housing and a driveshaft extending out of an opening in the housing. The primary seal surrounds and seals against the driveshaft to seal the opening in the housing. The fluid pressure pulse generator comprises a stator with a bore therethrough configured to fixedly attach to the housing or to a drill collar surrounding the fluid pressure pulse generator, and a rotor fixedly attached to the driveshaft. The driveshaft and rotor rotate relative to the fixed stator to generate pressure pulses in mud flowing through the fluid pressure pulse generator. The secondary seal is seated in the stator bore and surrounds and seals against a portion of the driveshaft extended out of the housing or a portion of the rotor to reduce the amount of mud, grit and debris impinging on the primary seal which could otherwise cause wear or damage the primary seal.
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
56.
SEAL AND SACRIFICIAL COMPONENTS FOR A DRILL STRING
A gap joint for use with a gap sub for electromagnetic telemetry. The gap joint has a replaceable uphole shoulder on the male gap joint component, which may be composed of a sacrificial material, to extend gap joint useful life where there is electrolysis of the component outside diameter. The gap joint also has a thicker outside diameter seal to reduce the risk of underlying O-ring extrusion and failure, again extending gap joint useful life. The thicker seal may also be able to withstand higher pressures before collapsing or experiencing punctures in unsupported areas. The replaceable shoulder and outside diameter seal can be used separately or together in a gap joint.
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
57.
Electromagnetic telemetry gap sub assembly with insulating collar
An insulating collar for a gap sub assembly for electromagnetic (EM) telemetry used in downhole drilling is disclosed. The gap sub assembly comprises a female member comprising a female mating section and a male member comprising a male mating section and a gap section. The male mating section is matingly received within the female mating section and electrically isolated therefrom. The insulating collar is positioned on the gap section. The collar is made up of a framework with a plurality of discrete bodies spaced about the framework and a portion of each of the discrete bodies protrudes above the framework. Either the framework or the discrete bodies are made of an electrical insulator material to electrically isolate one end of the collar from the other end of the collar. The collar therefore electrically isolates the male member from the female member and the male member, female member and insulating collar function as the “gap sub” for EM telemetry.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 17/042 - CouplingsJoints between rod and bit, or between rod and rod threaded
E21B 17/046 - CouplingsJoints between rod and bit, or between rod and rod with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
F16L 15/08 - Screw-threaded jointsForms of screw-threads for such joints with supplementary elements
F16L 25/02 - Construction or details of pipe joints not provided for in, or of interest apart from, groups specially adapted for electrically insulating the two pipe ends of the joint from each other
An assembly for use in subsurface drilling includes a downhole probe supported by a locking mechanism with a bore of a drill string section. The probe comprises a first spider and a second spider at the uphole and downhole sections of the probe. The locking mechanism secures the probes in the bore against axial and rotational movement relative the drill string section.
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
E21B 23/03 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting the tools into, or removing the tools from, laterally offset landing nipples or pockets
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
09 - Scientific and electric apparatus and instruments
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Providing downhole-to-surface, surface-to-downhole and/or downhole-to-downhole data telemetry and data processing for the oil and gas industry, namely, telemetric communication in the nature of electronic transmission of data for the purpose of providing guidance and geological feedback during oil and gas exploration and production Downhole drilling hardware and equipment for oil and gas exploration, namely, centralizers for downhole tools, downhole drill collars, gap subs, and carriers for lifting downhole tools Downhole survey and measurement hardware and equipment for oil and gas exploration and production, namely, data telemetry transmitters; data telemetry receivers; surface equipment for transmitting and receiving data telemetry, namely, data telemetry transmitters, data telemetry receivers, display computers, surface decoder and encoder software, surface antenna rods, and/or surface downlink stakes, electronic cables and connections; automated control systems comprising electrical control modules and software and firmware for use in data collection, data reporting and system control; pulse valves, namely, electronic valves for controlling fluids; electronic display units for control systems; wireless short hop signal transmitters and receivers; sensors, namely, sensors for temperature, sensors for pressure, sensors for formation evaluation properties such as gamma sensors and resistivity sensors, sensors for current and voltage measurement of transmitted telemetry signals, inclination sensors, azimuth sensors, RPM sensors, acceleration sensors, shock sensors, vibration sensors, and telemetry reception sensors; downhole measurement and logging tools comprising sensors, namely, sensors for temperature, sensors for pressure, sensors for formation evaluation properties such as gamma sensors and resistivity sensors, sensors for current and voltage measurement of transmitted telemetry signals, inclination sensors, azimuth sensors, RPM sensors, acceleration sensors, shock sensors, vibration sensors and telemetry reception sensors, and data telemetry components, namely, probes, power sources and tool carriers; connectivity devices for establishing downhole networks, namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface decoder and encoder software, surface antenna rods, and/or surface downlink stakes, probe and tool carrier subs, probe and tool centralizers, and software and firmware for use in data collection, data reporting, and system control; replacement components or subcomponents for data telemetry transmitters, data telemetry receivers, surface equipment, cables and connections; computer software for collecting, processing, reporting, and reviewing data collected by downhole sensors in downhole survey and measurement hardware used for oil and gas exploration and production Repair, maintenance and cleaning of hardware and equipment and related software for oil and gas exploration and production, namely, data telemetry transmitters, data telemetry receivers, centralizers for downhole tools, surface equipment for transmitting and receiving data telemetry, automated control systems, electronic interfaces for control systems, pulse valves, sensors, downhole collars, including gap subs, carriers for lifting downhole tools, downhole measurement and logging tools comprising sensors and data telemetry components, and kits comprising mechanical and electrical equipment, tools and devices with associated hardware, software and integrated firmware for use in oil and gas exploration and production; repair, maintenance and cleaning of hardware and equipment for oil and gas exploration and production, namely, short hop transmitters and receivers, and connectivity devices for establishing downhole networks, and kits comprising mechanical and electrical equipment, tools and devices with associated hardware, software, and integrated firmware for oil and gas exploration and production Engineering services for the oil and gas industry; custom design and development of technological solutions for the oil and gas industry, namely, product design of mechanical and electrical equipment, tools and devices, for use on surface and downhole, with associated hardware, firmware, and software, for telemetric communication and control of downhole and surface devices; oil and gas well logging services; customer support services, troubleshooting in the nature of diagnosing problems with hardware and equipment for oil and gas exploration and production; providing advice and recommendations to others related to the performance, reliability, location and troubleshooting of hardware and equipment for oil and gas drilling; providing downhole-to-surface, surface-to-downhole and/or downhole-to-downhole data telemetry and data processing for the oil and gas industry, namely, monitoring of data during oil and gas exploration and production for scientific research purposes; monitoring of oil and gas well production and completion for scientific purposes; oil and gas well drilling services providing downhole-to-surface, surface-to-downhole and/or downhole-to-downhole data telemetry, telemetry tool utilization and optimization consulting and data processing for the oil and gas drilling; maintenance of computer software for oil and gas exploration and production; rental of hardware and equipment for oil and gas exploration and production, namely, short hop transmitters and receivers, and connectivity devices for establishing downhole networks, for use in oil and gas exploration and production; rental of software for oil and gas exploration and production; rental of hardware and equipment for oil and gas exploration and production, namely, data telemetry transmitters, data telemetry receivers, centralizers for downhole tools, surface equipment for transmitting and receiving data telemetry, automated control systems, electronic interfaces for control systems, pulse valves, sensors, downhole collars, including gap subs, carriers for lifting downhole tools, downhole measurement and logging tools comprising sensors and data telemetry components, and kits comprising mechanical and electrical equipment, tools and devices with associated hardware, integrated firmware, and software for oil and gas exploration and production
09 - Scientific and electric apparatus and instruments
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools, downhole drill collars namely gap subs, lifting and hoisting equipment for lifting downhole tools, and parts and fittings for all of the foregoing goods; kits comprising hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools; kits comprising hardware and equipment for oil and gas exploration and production, namely downhole drill collars namely gap subs; kits comprising hardware and equipment for oil and gas exploration and production, namely lifting and hoisting equipment for lifting downhole tools.
(2) Hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters, data telemetry receivers, surface equipment for transmitting and receiving data telemetry, namely data telemetry transmitters, data telemetry receivers, display computers, surface decoder and encoder software for processing telemetry data signals, surface antenna rods, surface downlink stakes made of conductive materials, electronic cables and connections, automated control systems comprising electrical control modules and software and firmware for use in data collection and data reporting of data collected by downhole tools and system control of downhole exploration and production processes and downhole tools, electronic display units for control systems of downhole exploration and production processes and downhole tools, pulse valves, namely electronic valves for controlling fluids, short hop transmitters and receivers, sensors, namely sensors for temperature, sensors for pressure, sensors for formation evaluation properties such as gamma sensors and resistivity sensors, sensors for current and voltage measurement of transmitted telemetry signals, inclination sensors, azimuth sensors, RPM sensors, acceleration sensors, shock sensors, vibration sensors, and telemetry reception sensors, connectivity devices for establishing downhole networks namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface decoder and encoder software for processing telemetry data signals, surface antenna rods, surface downlink stakes made of conductive materials, probes and downhole drill collars for downhole tools namely gap subs, probes and tool centralizers for downhole tools being centralizers for probe positioning, and software and firmware for use in data collection and data reporting of data collected by downhole tools, and system control of downhole exploration and production processes and downhole tools, downhole measurement and logging tools comprising sensors and data telemetry components, and parts and fittings for all of the foregoing goods; computer software for collecting, processing, reporting, and reviewing data collected by downhole sensors in hardware and equipment for oil and gas exploration and production; kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters; kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry receivers; kits comprising hardware and equipment for oil and gas exploration and production, namely surface equipment for transmitting and receiving data telemetry, namely data telemetry transmitters, data telemetry receivers, display computers, surface decoder and encoder software for processing telemetry data signals, surface antenna rods, surface downlink stakes made of conductive materials, electronic cables and connections; kits comprising hardware and equipment for oil and gas exploration and production, namely automated control systems comprising electrical control modules and software and firmware for use in data collection and data reporting of data collected by downhole tools and system control of downhole exploration and production processes and downhole tools; kits comprising hardware and equipment for oil and gas exploration and production, namely electronic display units for control systems of downhole exploration and production processes and downhole tools; kits comprising hardware and equipment for oil and gas exploration and production, namely pulse valves, namely electronic valves for controlling fluids; kits comprising hardware and equipment for oil and gas exploration and production, namely short hop transmitters and receivers; kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for temperature; kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for pressure; kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for formation evaluation properties such as gamma sensors and resistivity sensors; kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for current and voltage measurement of transmitted telemetry signals; kits comprising hardware and equipment for oil and gas exploration and production, namely inclination sensors; kits comprising hardware and equipment for oil and gas exploration and production, namely azimuth sensors; kits comprising hardware and equipment for oil and gas exploration and production, namely RPM sensors; kits comprising hardware and equipment for oil and gas exploration and production, namely acceleration sensors; kits comprising hardware and equipment for oil and gas exploration and production, namely shock sensors; kits comprising hardware and equipment for oil and gas exploration and production, namely vibration sensors; kits comprising hardware and equipment for oil and gas exploration and production, namely telemetry reception sensors; kits comprising hardware and equipment for oil and gas exploration and production, namely connectivity devices for establishing downhole networks namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface decoder and encoder software for processing telemetry data signals, surface antenna rods, surface downlink stakes made of conductive materials, probes and downhole drill collars for downhole tools namely gap subs, probes and tool centralizers for downhole tools being centralizers for probe positioning, and software and firmware for use in data collection and data reporting of data collected by downhole tools, and system control of downhole exploration and production processes and downhole tools; kits comprising hardware and equipment for oil and gas exploration and production, namely downhole measurement and logging tools comprising sensors and data telemetry components; kits comprising hardware and equipment for oil and gas exploration and production, namely computer software for collecting, processing, reporting, and reviewing data collected by downhole sensors in hardware and equipment for oil and gas exploration and production. (1) Repair, maintenance and cleaning of hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters, data telemetry receivers, centralizers for downhole tools being centralizers for probe positioning, surface equipment for transmitting and receiving data telemetry, namely data telemetry transmitters, data telemetry receivers, display computers, surface antenna rods, surface downlink stakes made of conductive materials, electronic cables and connections, automated control systems comprising electrical control modules, electronic display units for control systems of downhole exploration and production processes and downhole tools, pulse valves, namely electronic valves for controlling fluids, short hop transmitters and receivers, sensors, namely sensors for temperature, sensors for pressure, sensors for formation evaluation properties such as gamma sensors and resistivity sensors, sensors for current and voltage measurement of transmitted telemetry signals, inclination sensors, azimuth sensors, RPM sensors, acceleration sensors, shock sensors, vibration sensors, and telemetry reception sensors, downhole drill collars, and gap subs, lifting and hoisting equipment for lifting downhole tools, connectivity devices for establishing downhole networks namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface antenna rods, and surface downlink stakes made of conductive materials, probes and hoisting connectors for transporting downhole probes, probes and tool centralizers for downhole tools being centralizers for probe positioning, downhole measurement and logging tools comprising sensors and data telemetry components; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry receivers; repair, maintenance and cleaning of kits comprising oil and gas exploration and production, namely centralizers for downhole tools being centralizers for probe positioning; repair, maintenance and cleaning of kits comprising surface equipment for transmitting and receiving data telemetry, namely, data telemetry transmitters, data telemetry receivers, display computers, surface antenna rods, surface downlink stakes made of conductive materials, and electronic cables and connections; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely automated control systems comprising electrical control modules; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely electronic display interfaces for control systems of downhole exploration and production processes and downhole tools; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely pulse valves, namely electronic valves for controlling fluids; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely short hop transmitters and receivers; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for temperature; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for pressure; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for formation evaluation properties such as gamma sensors and resistivity sensors; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for current and voltage measurement of transmitted telemetry signals; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely inclination sensors; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely azimuth sensors; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely RPM sensors; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely acceleration sensors; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely shock sensors; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely vibration sensors; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely telemetry reception sensors; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely downhole drill collars, and gap subs; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely lifting and hoisting equipment for lifting downhole tools; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely connectivity devices for establishing downhole networks namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface antenna rods, surface downlink stakes made of conductive materials, probes and hoisting connectors for transporting downhole probes, probes and tool centralizers for downhole tools being centralizers for probe positioning; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely downhole measurement and logging tools comprising sensors and data telemetry components; oil and gas well drilling services; rental of hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools, pulse valves namely electronic valves for controlling fluids, downhole drill collars, and gap subs, lifting and hoisting equipment for lifting downhole tools, probes and hoisting connectors for transporting downhole probes, probes and tool centralizers for downhole tools being centralizers for probe positioning; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools being centralizers for probe positioning; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely pulse valves, namely electronic valves for controlling fluids; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely downhole drill collars, and gap subs; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely lifting and hoisting equipment for lifting downhole tools; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely probes and hoisting connectors for transporting downhole probes, probes and tool centralizers for downhole tools being centralizers for probe positioning.
(2) Repair, maintenance and cleaning of hardware and equipment for oil and gas exploration and production, namely surface equipment for transmitting and receiving data telemetry, namely surface decoder and encoder software for processing telemetry data signals, and automated control systems comprising software and firmware for use in data collection and data reporting of data collected by downhole tools and system control of downhole exploration and production processes and downhole tools, surface equipment for transmission and reception of telemetry, namely, surface decoder and encoder software for processing telemetry data signals and software and firmware for use in data collection and data reporting of data collected by downhole tools, and system control of downhole exploration and production processes and downhole tools; repair, maintenance and cleaning of kits comprising surface equipment for transmitting and receiving data telemetry, namely surface decoder and encoder software for processing data telemetry signals; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely automated control systems comprising software and firmware for use in data collection and data reporting of data collected by downhole tools and system control of downhole exploration and production processes and downhole tools; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely connectivity devices for establishing downhole networks namely, surface equipment for transmission and reception of telemetry, namely surface decoder and encoder software for processing telemetry data signals, and software and firmware for use in data collection and data reporting of data collected by downhole tools, and system control of downhole exploration and production processes and downhole tools; mechanical, electrical and software engineering services in the field of developing hardware, equipment and software for the oil and gas industry; custom design and development of hardware, equipment and software for the oil and gas industry; oil and gas well logging services; customer support services, namely, troubleshooting in the nature of diagnosing problems with hardware and equipment for oil and gas exploration and production; tracking and analyzing data relating to the performance, reliability, location and troubleshooting of hardware and equipment for oil and gas exploration and production; oil and gas well production and completion monitoring services; rental of hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters, data telemetry receivers, surface equipment for transmitting and receiving data telemetry, namely data telemetry transmitters, data telemetry receivers, display computers, surface decoder and encoder software for processing telemetry data signals, surface antenna rods, surface downlink stakes made of conductive materials, electronic cables and connections, automated control systems comprising electrical control modules and software and firmware for use in data collection and data reporting of data collected by downhole tools and system control of downhole exploration and production processes and downhole tools, electronic display units for control systems of downhole exploration and production processes and downhole tools, short hop transmitters and receivers, sensors, namely sensors for temperature, sensors for pressure, sensors for formation evaluation properties such as gamma sensors and resistivity sensors, sensors for current and voltage measurement of transmitted telemetry signals, inclination sensors, azimuth sensors, RPM sensors, acceleration sensors, shock sensors, vibration sensors, and telemetry reception sensors, connectivity devices for establishing downhole networks namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface decoder and encoder software for processing telemetry data signals, surface antenna rods, surface downlink stakes made of conductive materials, and software and firmware for use in data collection and data reporting of data collected by downhole tools, and system control of downhole exploration and production processes and downhole tools, and downhole measurement and logging tools comprising sensors and data telemetry components; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry receivers; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools being centralizers for probe positioning; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely surface equipment for transmitting and receiving data telemetry, namely data telemetry transmitters, data telemetry receivers, display computers, surface decoder and encoder software for processing telemetry data signals, surface antenna rods, surface downlink stakes made of conductive materials, electronic cables and connections; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely automated control systems comprising electrical control modules and software and firmware for use in data collection and data reporting of data collected by downhole tools and system control of downhole exploration and production processes and downhole tools; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely electronic display units for control systems of downhole exploration and production processes and downhole tools; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely short hop transmitters and receivers; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for temperature; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for pressure; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for formation evaluation properties such as gamma sensors and resistivity sensors; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely sensors for current and voltage measurement of transmitted telemetry signals; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely inclination sensors; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely azimuth sensors; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely RPM sensors; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely acceleration sensors; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely shock sensors; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely vibration sensors; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely telemetry reception sensors; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely connectivity devices for establishing downhole networks namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface decoder and encoder software for processing telemetry data signals, surface antenna rods, surface downlink stakes made of conductive materials, and software and firmware for use in data collection and data reporting of data collected by downhole tools, and system control of downhole exploration and production processes and downhole tools; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely downhole measurement and logging tools comprising sensors and data telemetry components; oil and gas well services providing downhole-to-surface, surface-to-downhole and downhole-to-downhole data telemetry and data processing for the oil and gas industry, namely guidance and geological feedback and telemetric communication for telemetry tool utilization and optimization consulting, and monitoring of data during oil and gas exploration and production for scientific research purposes.
Method and apparatus for transmitting data to or from a downhole tool while the tool is at or near the surface using a wireless data link. A downhole tool comprising a gap sub having a tubular section with first and second longitudinally spaced-apart electrically-conducting parts that are electrically isolated from each other. An electromagnetic telemetry transmitter is connected to apply a potential difference between the first and second electrically conductive parts. A single-wire bus provides a data connection between one of the first and second electrically conductive parts and a data processor.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
H04Q 9/00 - Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
A downhole probe is adapted to be supported in drill string sections having different internal diameters with the use of a set of interchangeable centralizers. Each centralizer is dimensioned to snugly receive the downhole probe and to bear against the bore wall of a drill-string section. Interchangeable axial supports such as spiders may also be provided in a set. The downhole probe may comprise a slick body. As drilling progresses the downhole probe may be adapted to be received in drill string sections of varying diameters.
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
E21B 23/01 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
E21B 23/02 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for locking the tools or the like in landing nipples or in recesses between adjacent sections of tubing
E21B 7/00 - Special methods or apparatus for drilling
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
63.
Pressure compensation device for a fluid pressure pulse generating apparatus
A pressure compensation device for a downhole fluid pressure pulse generator comprising: a membrane sleeve; a membrane support with a bore for receiving a drive-shaft, a central section which receives the membrane sleeve, a male mating section on each side, each having a groove extending around an external surface and at least one opening aligned with the groove; a pair of female mating components with a bore and a channel in an internal surface, each female mating component configured to mate with one of the male mating sections to axially clamp the membrane sleeve between the membrane support and the female mating components; and a pair of retaining rings each received between the male mating section groove and the female mating component channel, where the retaining rings are accessible through the opening in the male mating section and radially expandable into a space in the female mating component to unseat the retaining ring from the groove for removal.
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
64.
Device and method for retaining probe exterior wear sleeve
A device and method for retaining a sacrificial wear sleeve on the exterior of an in-pipe device such as an electronics package or probe. In one embodiment, the retention mechanism comprises a ring having a protuberance or lip extending parallel to and against the end of the sleeve, thus pressing the end of the sleeve against the external surface of the device. This has the advantage, in situations where fluids are flowing through the pipe and around the device, of reducing the risk of fluids moving beneath the sleeve and damaging it and/or the underlying device external surface. In another embodiment, the retention mechanism is of unitary construction with the device itself and comprises a protuberance or lip extending parallel to and against the end of the sleeve, thus pressing the end of the sleeve against the external surface of the device.
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
65.
Downhole electromagnetic and mud pulse telemetry apparatus
A measurement-while-drilling (MWD) telemetry system comprises a downhole MWD telemetry tool comprising a mud pulse (MP) telemetry unit and an electromagnetic (EM) telemetry unit. The MWD telemetry tool can be configured to transmit data in an EM-only telemetry mode using only the EM telemetry unit, in an MP-only mode using only the MP telemetry unit, or in a concurrent telemetry mode using both the EM and MP telemetry units concurrently. When transmitting data in the concurrent telemetry mode, the telemetry tool can be configured to transmit in a concurrent confirmation mode wherein the same telemetry data is transmitted by each of the EM and MP telemetry units, or in a concurrent shared mode wherein some of the telemetry data is transmitted by the EM telemetry unit, and the rest of the telemetry data is transmitted by the MP telemetry unit. The telemetry tool can be programmed to change its operating telemetry mode in response to a downlink command sent by an operator at surface.
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
An electromagnetic telemetry system adjusts telemetry parameters which may include carrier frequency, signal amplitude and/or data encoding protocol to achieve reliable data transmission and to conserve power. In some embodiments, sweep signals transmit a range of carrier frequencies and the parameters are determined in part by analyzing the received sweep signals. In some embodiments, different parameters are selected automatically based on a mode of drilling.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
A pressure measurement apparatus for a downhole measurement-while-drilling tool comprises a feed through connector and a pressure transducer. The feed through connector comprises a body with a first end and an opposite second end, at least one electrical interconnection extending axially through the body and out of the first and second ends, and a pressure transducer receptacle in the first end and a communications bore extending from the receptacle to the second end. The pressure transducer is seated in the receptacle such that a pressure at the first end can be measured, and comprises at least one electrical contact that extends from the pressure transducer through the communication bore and out of the second end. The pressure transducer can take pressure measurements used to predict wear of a primary seal in a motor subassembly of the tool, detect a pressure-related battery failure event, and control operation of a dual pulse height fluid pressure pulse generator.
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
68.
Selecting transmission frequency based on formation properties
A method and apparatus for downhole data transmission. The method comprising monitoring electrical impedance properties of a downhole formation by applying an electrical signal between a first portion and a second portion of a drill string that are electrically insulated from each other by an insulating portion, selecting a frequency for transmitting data by electromagnetic telemetry based at least in part on the monitored electrical impedance and transmitting the data by encoding the data in a waveform having the selected frequency and applying the waveform between the first portion and the second portion of the drill string.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
G01V 3/20 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with propagation of electric current
G08C 19/12 - Electric signal transmission systems in which the signal transmitted is frequency or phase of AC
A method for selecting a drilling fluid pressure pulse transmission frequency in a downhole telemetry tool comprises: emitting a frequency sweep wave in a drilling fluid that comprises pressure pulses over a range of frequencies and over a period of time; measuring a pressure of the drilling fluid at the telemetry tool while the frequency sweep wave is being emitted; determining a signal strength at each frequency in the range of frequencies from the measured pressure of the drilling fluid; and selecting at least one frequency in the range of frequencies that meets a selected signal strength threshold as a telemetry signal transmission frequency for the telemetry tool. The method can further comprise encoding the at least one selected frequency in a header message and transmitting the header message to surface using pressure pulse telemetry, and then encoding telemetry data into a pressure pulse telemetry signal and transmitting the pressure pulse telemetry signal to surface at the at least one selected frequency.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
70.
Fluid pressure pulse generator for a downhole telemetry tool
A fluid pressure pulse generator for a downhole telemetry tool comprising a stator and a rotor. The stator comprises a stator flow diverter radially extending across a flow path for fluid flowing through the fluid pressure pulse generator and having one or more than one stator flow channel therethrough through which the fluid flows. The rotor comprises a rotor flow diverter radially extending across the flow path for fluid flowing through the fluid pressure pulse generator and having one or more than one rotor flow channel therethrough through which the fluid flows. The rotor flow diverter is axially adjacent the stator flow diverter and the rotor flow diverter is rotatable relative to the stator flow diverter to move the one or more than one rotor flow channel in and out of fluid communication with the one or more than one stator flow channel to create fluid pressure pulses in the fluid flowing through the fluid pressure pulse generator. A rotor/driveshaft coupling releasably couples the driveshaft of a probe of the tool and the rotor such that the probe can be decoupled from the rotor and removed from a sub housing the fluid pressure pulse generator.
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
F01C 1/02 - Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
71.
Flow bypass sleeve for a fluid pressure pulse generator of a downhole telemetry tool
A flow bypass sleeve for a fluid pressure pulse generator of a downhole telemetry tool. The fluid pressure pulse generator comprising a stator having one or more flow channels or orifices through which drilling fluid flows and a rotor which rotates relative to the stator to move in and out of fluid communication with the flow channels or orifices to create fluid pressure pulses in the drilling fluid flowing through the fluid pressure pulse generator. The flow bypass sleeve is configured to attach to a drill collar which housing the telemetry tool and comprises a body with a bore therethrough which receives the fluid pressure pulse generator. The body includes at least one longitudinally extending bypass channel comprising a groove longitudinally extending along an internal surface of the body or an aperture longitudinally extending through the body. The bypass channel extends across at least a portion of both the stator and the rotor when the fluid pressure pulse generator is received in the flow bypass sleeve such that the drilling fluid flows along the bypass channel as well as flowing through the flow channels or orifices. The bypass channel diverts drilling fluid around the fluid pressure pulse generator and may be dimensioned to control the amount of drilling fluid being diverted.
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
72.
Methods and apparatus for generating electromagnetic telemetry signals
An electromagnetic telemetry signal generating assembly comprises a first section of drill string, a second section of drill string, a gap sub configured to insulate the first section from the second section, and a power source configured to provide a first voltage to a control circuit. The control circuit is configured to drive a second voltage between the sections of drill string. The gap sub provides a gap of at least 12 inches (30 cm). The second voltage may be different than the first voltage.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
The embodiments described herein generally relate to a method and apparatus for providing a back up system of Directional and Inclination (D&I) information to be gathered and transmitted in addition to primary D&I sensors currently employed in industry. A downhole probe assembly including primary sensors, back up sensors and a controller is disclosed. The primary sensors comprise primary accelerometers and primary magnetometers configured to gather information relating to each of orthogonal axes X, Y and Z. The back up sensors comprise back up accelerometers configured to gather information relating to each of orthogonal axes X, Y and Z, the back up accelerometers being solid state accelerometers. The controller is in electrical communication with the primary sensors and the back up sensors. The controller is configured to receive and process information from the primary sensors and the back up sensors so that information from the back up accelerometers can be used when one or more of the primary accelerometers fail, which may allow drilling operations to continue despite such failure.
E21B 47/024 - Determining slope or direction of devices in the borehole
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/022 - Determining slope or direction of the borehole, e.g. using geomagnetism
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
An assembly for receiving telemetry signals from downhole equipment is located at a top end of a drill string above a drill rig floor. The assembly may be configured to receive multiple types of telemetry signals, for example, two or more of electromagnetic telemetry, mud pulse telemetry and drill string acoustic telemetry signals. The assembly may comprise a cap comprising a coupling and an end separated by an electrically-insulating gap region. The end of the cap may be connected to a grounding system for the drill rig.
G01V 3/00 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
H04L 29/08 - Transmission control procedure, e.g. data link level control procedure
H04Q 9/00 - Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
An assembly for securing a probe retention member at a desired location within a tubular interior such as in a drill string collar, using one or more securing members external to the retention member or isolating most of the stresses from the probe retention structures of the retention member.
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
F16B 1/00 - Devices for securing together, or preventing relative movement between, constructional elements or machine parts
F16B 11/00 - Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
F16D 1/06 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
An assembly for securing a probe retention member at a desired location within a tubular interior such as in a drill string collar, using one or more securing members external to the retention member or isolating most of the stresses from the probe retention structures of the retention member.
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
F16B 1/00 - Devices for securing together, or preventing relative movement between, constructional elements or machine parts
F16B 11/00 - Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
F16D 1/06 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
09 - Scientific and electric apparatus and instruments
35 - Advertising and business services
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Hardware and equipment for oil and gas exploration and production, namely, centralizers being machine tools for probe positioning, and structural parts for centralizers, namely, gap subs, downhole subs, and replacement components for gap subs and downhole subs; oil and gas exploration equipment, namely, turbine power generators and downhole probe carriers being mechanical hoists for transporting downhole probes, mechanical couplers for machines, and mechanical seals Hardware and equipment for oil and gas exploration and production, namely, data telemetry transmitters, data telemetry receivers, surface equipment for receiving uplink data telemetry, namely, display computers, surface decoder and encoder software, surface antenna rods, and surface downlink stakes being downhole surface probes, electrical cables and connectors, automated control systems comprising electrical controllers, data collection, data reporting, and system control firmware and software, pulse valves being electronic valves for controlling fluids, downhole measurement and logging tools comprising sensors, namely, sensors for temperature, sensors for pressure, sensors for formation evaluation properties such as gamma sensors and resistivity sensors, sensors for current and voltage measurement of transmitted telemetry signals, inclination sensors, azimuth sensors, RPM sensors, acceleration sensors, shock sensors, vibration sensors, directional sensors, and telemetry reception sensors, and data telemetry components, namely, measurement, logging and communication probes, power sources, namely, batteries, connectivity devices for establishing downhole networks, namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface decoder and encoder software, surface antenna rods, and surface downlink stakes being downhole surface probes, and data collection, data reporting, and system control firmware and software, replacement components or subcomponents for data telemetry transmitters, data telemetry receivers, surface equipment in the nature of computer hardware, electric cables and connectors, automated control systems comprising computer hardware, downhole measurement and logging tools being computer hardware, and connectivity devices, namely, electrical connectors, electronic boards being computer hardware, batteries and remote controls for motors; computer software for collecting, processing, reporting, and reviewing data collected by downhole sensors in hardware and equipment for oil and gas exploration and production Data processing for the oil and gas industry Rental of hardware and equipment for oil and gas exploration and production, excluding computer hardware, namely, data telemetry transmitters, data telemetry receivers, centralizers for downhole tools, gap subs, surface equipment for receiving uplink data telemetry, automated control systems, electronic interfaces for control systems, pulse valves, downhole measurement and logging tools comprising sensors, data telemetry components, and connectivity devices for establishing downhole networks, namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, surface antenna rods, and surface downlink stakes, cables and connections, probe and tool carrier subs, probe and tool centralizers; repair, maintenance and cleaning of hardware and equipment for oil and gas exploration and production, namely, data telemetry transmitters, data telemetry receivers, centralizers for downhole tools, gap subs, surface equipment for receiving uplink data telemetry, automated control systems, electronic interfaces for control systems, pulse valves, downhole measurement and logging tools comprising sensors and data telemetry components, and connectivity devices for establishing downhole networks, namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface antenna rods, and/or surface downlink stakes, cables and connections, probe and tool carrier subs, probe and tool centralizers for oil and gas exploration and production Engineering services for the oil and gas industry in the field of developing hardware, equipment and software for the oil and gas industry; custom design and development of technological solutions for the oil and gas industry, namely, mechanical and electrical equipment, tools and devices, for use on surface and downhole, with associated hardware, firmware, and software, for telemetric communication and control of downhole and surface devices; oil and gas well exploration and production services, namely, oil and gas well logging services; customer support services, namely, troubleshooting in the nature of diagnosing problems with hardware and equipment for oil and gas exploration and production; oil and gas well services providing downhole-to-surface, surface-to-downhole and/or downhole-to-downhole data telemetry, telemetry tool utilization and optimization consulting; rental of computer hardware and related software for oil and gas exploration and production, namely, data telemetry transmitters, data telemetry receivers, surface equipment for receiving uplink data telemetry, automated control systems, electronic interfaces for control systems, downhole measurement and logging tools comprising sensors, data telemetry components, and connectivity devices for establishing downhole networks, namely, data telemetry transmitters and receivers, tool-to-tool interface probes, surface equipment for transmission and reception of telemetry, namely, display computers, surface decoder and encoder software, surface antenna rods, data collection, data reporting, and system control firmware and software for oil and gas exploration and production; repair and maintenance of software for use in oil and gas exploration and production, including surface decoder and encoder software, and data collection, data reporting, and system control firmware and software
A method for establishing downlink telemetry communication to a downhole system involves placing into a drillstring a telemetry transcoder, and advancing the drillstring so the telemetry transcoder is below the surface. The method then transmits downlink EM telemetry signals from surface equipment. These signals are received at the telemetry transcoder which retransmits the signals as mud pulse signals. The mud pulse signals are received at the downhole system.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
E21B 47/26 - Storing data down-hole, e.g. in a memory or on a record carrier
A method for establishing downlink telemetry communication to a downhole system involves placing into a drillstring a telemetry transcoder, and advancing the drillstring so the telemetry transcoder is below the surface. The method then transmits downlink EM telemetry signals from surface equipment. These signals are received at the telemetry transcoder which retransmits the signals as mud pulse signals. The mud pulse signals are received at the downhole system.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
E21B 47/26 - Storing data down-hole, e.g. in a memory or on a record carrier
A telemetry method transmits data by MP telemetry to a telemetry relay system which retransmits the data by EM telemetry. The method avoids the need to incorporate MP telemetry pressure transducers into rig equipment and permits telemetry from regions unfavorable for EM telemetry because of depth and/or characteristics surrounding formations.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
Data is communicated from sensors at a downhole location near a drill bit to surface equipment. Communication to the surface equipment may be direct or may pass through a series of nodes. The nodes in some cases are intelligently reconfigured to achieve desired data rates, achieve power management goals, and/or compensate for failed nodes.
G01V 3/00 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
A telemetry system with a plurality of controllers and telemetry systems, where the controllers are configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
E21B 47/024 - Determining slope or direction of devices in the borehole
E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
A component mounting apparatus for holding a rigid component in a downhole bore or a downhole collar based application includes a first body including first and second parallel spaced apart component holders disposed in a first common plane and a first support connecting the component holders together. The first and second parallel spaced apart component holders are operable to receive and grip a rigid component between the first and second parallel spaced apart component holders. Various component mounting assemblies and configurations may be realized using the component mounting apparatus described. The component mounting apparatus and various mounting assemblies may be used to mount a printed circuit board in a cylindrical enclosure or tubular housing, for example.
H05K 7/14 - Mounting supporting structure in casing or on frame or rack
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
A downhole system comprises a main sensor, such as a gamma sensor, and a backup sensor. The backup sensor may be of a different type from the main sensor. In some embodiments the backup sensor is a high reliability sensor that may have a different sensitivity from the main sensor. The system operates both the main and backup sensors and generates calibration data for the backup sensor. If the main sensor fails the calibration data may be applied to process data from the backup sensor to yield an estimate of the data that the main sensor would have yielded if it had remained operational. The calibration data may compensate for temperature variations and/or temporal drift, for example.
G01V 5/12 - Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays using gamma- or X-ray sources
G01V 13/00 - Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups
85.
Fluid pressure pulse generator for a downhole telemetry tool
A fluid pressure pulse generator for a downhole telemetry tool comprising a stator and a rotor. The stator has a stator body and a plurality of radially extending stator projections spaced around the stator body, with adjacently spaced stator projections defining stator flow channels extending therebetween. The rotor has a rotor body and a plurality of radially extending rotor projections spaced around the rotor body, with adjacently spaced rotor projections defining rotor flow channels extending therebetween. The rotor projections are axially adjacent the stator projections. The rotor is rotatable relative to the stator and is configured to oscillate from an open flow position an equal span of clockwise and counter clockwise rotation to first and second restricted flow positions. In the open flow position the rotor projections align with the stator projections with an axial central line of the stator projections circumferentially offset from an axial central line of the rotor projections and the rotor flow channels are in fluid communication with the stator flow channels so that drilling fluid flows through the fluid pressure pulse generator apparatus. In the first and second restricted flow positions the rotor projections are in fluid communication with the stator flow channels to create a pressure pulse in the drilling fluid flowing through the fluid pressure pulse generator apparatus. The equal span of clockwise and counter clockwise rotation is selected so that a gap is formed between the rotor projections and the stator projections in at least one of the first and second restricted flow positions for flow of drilling fluid therethrough and a greater proportion of the rotor projections is in fluid communication with the stator flow channels in one of the first and second restricted flow positions than in the other of the first and second restricted flow positions. The fluid pressure pulse generator creates pressure pulses with different pulse heights through symmetrical rotation of the rotor relative to the stator.
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
E21B 34/08 - Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
A downhole system has a plurality of telemetry systems and a control system configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system and how the information is to be transmitted on the given telemetry system.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/14 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
H04B 3/54 - Systems for transmission via power distribution lines
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
87.
Method and system for transmitting a data frame of an electromagnetic telemetry signal to or from a downhole location
Methods, techniques, and systems for transmitting a data frame of an electromagnetic (EM) telemetry signal to or from a downhole location can be performed using multi-channel transmissions in which at least two different channels at two different frequencies are used to send a long header and the data frame. At least a portion of the long header is transmitted at a first frequency, and at least a portion of the data frame and any remaining portion of the long header not transmitted at the first frequency are transmitted at one or more additional frequencies different from each other and the first frequency. In one example, only two channels are used: one channel is used to transmit all of the long header, another channel is used to transmit all of the data frame, and either of the channels is used to transmit an identifier identifying the type of the data frame.
H04J 9/00 - Multiplex systems in which each channel is represented by a different type of modulation of the carrier
H04L 5/06 - Channels characterised by the type of signal the signals being represented by different frequencies
H04L 7/06 - Speed or phase control by synchronisation signals the synchronisation signals differing from the information signals in amplitude, polarity, or frequency
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
G08C 19/14 - Electric signal transmission systems in which the signal transmitted is frequency or phase of AC using combination of fixed frequencies
88.
Fluid pressure pulse generator for a downhole telemetry tool
A fluid pressure pulse generator for a downhole telemetry tool comprising a stator and a rotor. The stator comprises a stator body and a plurality of radially extending stator projections spaced around the stator body, whereby adjacently spaced stator projections define stator flow channels extending therebetween. The rotor comprises a rotor body and a plurality of radially extending rotor projections spaced around the rotor body. The rotor projections are axially adjacent to the stator projections and the rotor is rotatable relative to the stator such that the rotor projections move in and out of fluid communication with the stator flow channels to create fluid pressure pulses in fluid flowing through the stator flow channels. The rotor projections may be positioned downhole of the stator projections and include a self-correction mechanism to move the rotor to an open flow position where the rotor projections are out of fluid communication with the stator flow channels if the telemetry tool fails. The stator body may be configured to fixedly attach to a pulser assembly of the downhole telemetry tool and the rotor may be configured to fixedly attach to a driveshaft of the pulser assembly with the driveshaft and/or the rotor body received within the bore of the stator body such that the stator projections are positioned between the pulser assembly and the rotor projections.
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
89.
FLUID PRESSURE PULSE GENERATOR FOR A TELEMETRY TOOL
A fluid pressure pulse generator apparatus for a telemetry tool comprising a stator and a rotor. Rotor projections are axially adjacent and rotatable relative to stator projections between an open flow position where the rotor projections axially align with the stator projections and a restricted flow position where the rotor projections axially align with the stator flow channels to create fluid pressure pulses in fluid flowing through the stator flow channels. At least one uphole radial face comprises a stopper portion which is uphole relative to at least a portion of the axially aligned downhole radial face and/or at least one downhole radial face comprises a stopper portion which is downhole relative to at least a portion of the axially aligned uphole radial face, such that the stopper portion limits the span of rotation of the rotor relative to the stator.
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
A measurement-while-drilling system is integrated into a mud motor. The measurement-while-drilling system includes sensors which may include inclination and tool face sensors, for example, located near to the drill bit. Data from the near bit sensors is transmitted by way of telemetry, for example, EM telemetry. The mud motor may include a rotating electrical coupling which provides good electrical productivity between an uphole coupling of the mud motor and the rotating mandrel. The EM telemetry transmitter may include an electrically-insulating gap integrated with the mandrel of the mud motor.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
A gap sub assembly for electromagnetic telemetry used in downhole drilling is disclosed. The gap sub comprises a female part comprising a female mating section and a male part comprising a male mating section. The male mating section is matingly received within the female mating section and electrically isolated therefrom. One or more electrically insulating bodies secure the male part axially and torsionally relative to the female part. The electrically insulating bodies also electrically isolate the male part from the female part. The electrically insulating bodies can be installed through apertures in the female part or at least some of the electrically insulating bodies can be installed before the male mating section is inserted into the female mating section. The electrically insulating bodies can be held in place on the male mating section using a retention apparatus such as a ring, a scarf, pods or an adhesive.
E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod
E21B 17/042 - CouplingsJoints between rod and bit, or between rod and rod threaded
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
H01B 3/12 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of inorganic substances ceramics
H01B 17/38 - Fittings, e.g. capsFastenings therefor
A gap sub assembly for electromagnetic telemetry used in downhole drilling is disclosed. The gap sub comprises a female part comprising a female mating section and a male part comprising a male mating section. The male mating section is matingly received within the female mating section and electrically isolated therefrom. One or more electrically insulating bodies secure the male part axially and torsionally relative to the female part. The electrically insulating bodies also electrically isolate the male part from the female part. The electrically insulating bodies can be installed through apertures in the female part or at least some of the electrically insulating bodies can be installed before the male mating section is inserted into the female mating section. The electrically insulating bodies can be held in place on the male mating section using a retention apparatus such as a ring, a scarf, pods or an adhesive.
E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod
E21B 17/042 - CouplingsJoints between rod and bit, or between rod and rod threaded
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
H01B 17/38 - Fittings, e.g. capsFastenings therefor
H01B 3/12 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of inorganic substances ceramics
A drill string section receives an electronics package. A flow channel extends through an aperture in the electronics package. The flow channel carries a flow of drilling fluid through the drill string section. The flow channel is sealed to a body of the drill string section. The electronics package need not be pressure-rated.
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
94.
Drill string sections with interchangeable couplings
A drill string section includes one or two tool joints that are removable from a body. Tool joints with different thread configurations may be interchangeably used with the same body. The tool joints have a compact construction that can facilitate making the drill string section short. The body overlaps with threads of one or both of the tool joints. The drill string section has non-exclusive application between a mud motor and a drill bit.
E21B 17/03 - CouplingsJoints between drilling rod or pipe and drill motor, e.g. between drilling rod and hammer
E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod
E21B 17/042 - CouplingsJoints between rod and bit, or between rod and rod threaded
E21B 17/043 - CouplingsJoints between rod and bit, or between rod and rod threaded with locking means
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
A gap sub has electrically-conductive parts held together by electrical insulators which engage in channels formed in the parts. The electrical insulators hold the parts in a spaced-apart electrically-insulated relationship. In some embodiments, the electrical insulators are removable to allow separation of the parts. An insulating oil or other fluid may fill the gap.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 17/042 - CouplingsJoints between rod and bit, or between rod and rod threaded
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
A jig and method useful for coupling and/or uncoupling drill string sections. In some embodiments, the jig comprises a body having an outer surface for engaging a torqueing tool and a cavity extending from a first end to a second end of the body and an engagement means at the first end of the body. The engagement means may be dimensioned to non-rotationally engage an outer surface of a first end of a drill string section and the cavity may be sized to fit about a drill string section.
Methods and systems for testing connectivity in an EM telemetry system for transmission of a ground originating uplink EM telemetry signal. The methods and systems comprise a switch coupled to the link and configured to selectively connect the link to a test signal generator or a signal receiver, the test signal generator configured to generate a test signal and to supply it to a ground conductor, and the current within the link is measured to determine whether the link and ground conductor can properly transmit the ground originating uplink EM telemetry signal.
G01V 3/00 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
H04Q 9/00 - Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
09 - Scientific and electric apparatus and instruments
37 - Construction and mining; installation and repair services
38 - Telecommunications services
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools, gap subs, and parts and fittings for all of the foregoing goods; kits comprising hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools; kits comprising hardware and equipment for oil and gas exploration and production, namely gap subs.
(2) Hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters, data telemetry receivers, surface equipment for receiving uplink data telemetry, automated control systems comprising electrical control modules, data collection, data reporting and system control firmware and software, electronic display interfaces for control systems, pulse valves, short hop transmitters and receivers, connectivity devices for establishing downhole networks namely, transceivers, repeaters, hubs, bridges, switches, routers and gateways, downhole measurement and logging tools comprising sensors and data telemetry components, and parts and fittings for all of the foregoing goods; computer software for collecting, processing, reporting, and reviewing data collected by downhole sensors in hardware and equipment for oil and gas exploration and production; kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters; kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry receivers; kits comprising hardware and equipment for oil and gas exploration and production, namely surface equipment for receiving uplink data telemetry; kits comprising hardware and equipment for oil and gas exploration and production, namely automated control systems comprising electrical control modules, data collection, data reporting and system control firmware and software; kits comprising hardware and equipment for oil and gas exploration and production, namely electronic display interfaces for control systems; kits comprising hardware and equipment for oil and gas exploration and production, namely pulse valves; kits comprising hardware and equipment for oil and gas exploration and production, namely short hop transmitters and receivers; kits comprising hardware and equipment for oil and gas exploration and production, namely connectivity devices for establishing downhole networks namely, transceivers, repeaters, hubs, bridges, switches, routers and gateways; kits comprising hardware and equipment for oil and gas exploration and production, namely downhole measurement and logging tools comprising sensors and data telemetry components; kits comprising computer software for collecting, processing, reporting, and reviewing data collected by downhole sensors in hardware and equipment for oil and gas exploration and production. (1) Oil and gas well drilling services; oil and gas well production and completion monitoring services; rental of hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters, data telemetry receivers, centralizers for downhole tools, gap subs, surface equipment for receiving uplink data telemetry, automated control systems comprising electrical control modules, data collection, data reporting and system control firmware and software, electronic display interfaces for control systems, pulse valves, short hop transmitters and receivers, connectivity devices for establishing downhole networks namely, transceivers, repeaters, hubs, bridges, switches, routers and gateways, and downhole measurement and logging tools comprising sensors and data telemetry components; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry receivers; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely gap subs; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely surface equipment for receiving uplink data telemetry; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely automated control systems comprising electrical control modules, data collection, data reporting and system control firmware and software; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely electronic display interfaces for control systems; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely pulse valves; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely short hop transmitters and receivers; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely connectivity devices for establishing downhole networks namely, transceivers, repeaters, hubs, bridges, switches, routers and gateways; rental of kits comprising hardware and equipment for oil and gas exploration and production, namely downhole measurement and logging tools comprising sensors and data telemetry components; repair, maintenance and cleaning of hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters, data telemetry receivers, centralizers for downhole tools, gap subs, surface equipment for receiving uplink data telemetry, automated control systems comprising electrical control modules, data collection, data reporting and system control firmware and software, electronic display interfaces for control systems, pulse valves, short hop transmitters and receivers, connectivity devices for establishing downhole networks, namely transceivers, repeaters, hubs, bridges, switches, routers and gateways, and downhole measurement and logging tools comprising sensors and data telemetry components; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry transmitters; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely data telemetry receivers; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely centralizers for downhole tools; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely gap subs; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely surface equipment for receiving uplink data telemetry; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely automated control systems comprising electrical control modules, data collection, data reporting and system control firmware and software; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely electronic display interfaces for control systems; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely pulse valves; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely short hop transmitters and receivers; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely connectivity devices for establishing downhole networks namely, transceivers, repeaters, hubs, bridges, switches, routers and gateways; repair, maintenance and cleaning of kits comprising hardware and equipment for oil and gas exploration and production, namely downhole measurement and logging tools comprising sensors and data telemetry components.
(2) Providing downhole-to-surface, surface-to-downhole and downhole-to-downhole data telemetry and data processing for the oil and gas industry, namely guidance and geological feedback, telemetric communication and monitoring of data during oil and gas exploration and production.
(3) Engineering services in the field of developing hardware, equipment and software for the oil and gas industry; custom design and development of hardware, equipment and software for the oil and gas industry; oil and gas well logging services; customer support services, namely troubleshooting in the nature of diagnosing problems with hardware and equipment for oil and gas exploration and production; tracking and analyzing data relating to the performance, reliability, location and troubleshooting of hardware and equipment for oil and gas exploration and production.
An assembly for use in subsurface drilling includes a downhole downhole probe supported by a centralizer. The centralizer comprises a tubular member that extends around the downhole probe. A wall of the centralizer is fluted to provide inward contact points that support the downhole probe and outward contact points that bear against a bore wall of a section of drill string. The downhole probe may be supported for substantially its entire length.
E21B 23/01 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
E21B 23/02 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for locking the tools or the like in landing nipples or in recesses between adjacent sections of tubing
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
E21B 7/00 - Special methods or apparatus for drilling
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
A method for sealing a gap sub wherein injected material is used to secure a seal member in a gap. The seal member is positioned in the gap, and the material is then injected into the gap and against the seal member, seating the seal member and securing it in place once the material solidifies. The injected material is preferably electrically non-conductive.
F16J 15/02 - Sealings between relatively-stationary surfaces
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
F16J 15/06 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
