Abstract

Downhole tool assembly (10) for mounting to a core barrel assembly (12) including a core tube (14) and a pair of split tubes (16). The downhole tool assembly (10) includes a downhole tool (18) and at least one sleeve (20) dimensioned to slidingly engage the split tubes (16) to inhibit radial movement of the split tubes (16) and receive and retain the downhole tool (18) coaxially with the core tube (14). Core ejection pistons (72), and methods for extracting a core from bedrock are also disclosed. A housing assembly (120) for a downhole tool, downhole assemblies (180, 200), and methods of assembling such assemblies are also disclosed.

IPC Classes  ?

• E21B 47/017 - Protecting measuring instruments

Abstract

A method for logging a borehole, comprising: receiving hole data representing the borehole, wherein the hole data includes at least a collar position indicating a location of the collar of the borehole; determining a measurement reference position indicating a reference location of a measurement device configured to be deployed into the borehole; receiving, from a depth logging device, one or more depth values of the measurement device in response to the deployment, from the reference location, of the measurement device to measure the borehole; and determining one or more corrected depth values based on the one or more depth values, the collar position, and the measurement reference position.

IPC Classes  ?

• E21B 47/04 - Measuring depth or liquid level
• 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 11/00 - Prospecting or detecting by methods combining techniques covered by two or more of main groups

Abstract

An installation apparatus for a measurement tool in an underground mine with overhead drill holes, the installation apparatus comprising: a support that can be removably secured to the ceiling, wall and/or ground of the mine, and an installation conduit that can be removably coupled to the support and aligned with the drill hole to deploy a survey and/or geophysical tool into the open drill hole.

IPC Classes  ?

• E21B 47/08 - Measuring diameters or related dimensions at the borehole
• E21B 19/084 - Apparatus for feeding the rods or cablesApparatus for increasing or decreasing the pressure on the drilling toolApparatus for counterbalancing the weight of the rods with flexible drawing means, e.g. cables
• E21B 23/14 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells

Abstract

A system for blast hole data collection for use in a mine site incorporates an instrument configured to acquire geological property data of a blast hole for processing in the system or remotely and a vehicle having a handling system configured to move the instrument into and out of the blast hole as an interchangeable element with a drill string or prior to explosives charging and charging the blast hole in accordance with a determined charge profile.

IPC Classes  ?

• 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 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 47/08 - Measuring diameters or related dimensions at the borehole
• E21B 47/26 - Storing data down-hole, e.g. in a memory or on a record carrier

Abstract

A method (60) of determining core orientation of a core sample (12) cut from the ground by a drill rig (10) having a drill string and a drill bit (20) coupled to a downhole end of the drill string. Drilling data (Cn, Rn) is continuously acquired while the drill rig (10) is operating to cut and retrieve the core sample (12). The drilling data is a combination of core orientation data Cn and rig operational data Rn, where the rig operational data is constituted by either one or both of: (a) near bit rig data Nn; and, (b) at surface rig data Sn. The drilling data is analyzed for a specific pattern of rig operational data Rn indicative of the core sample being broken from ground by operation of the drill rig (10). On detection of the specific pattern, the orientation of the core sample prior to being broken from the ground is the acquired core orientation data Cn coinciding with that specific pattern of rig operational data Rn.

IPC Classes  ?

• E21B 47/024 - Determining slope or direction of devices in the borehole
• E21B 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores

Abstract

Device (10) for guiding a user to mark a core sample (12) carried by a core tube (14), the device (10) including: a housing (20) mountable relative to the core sample (12) or the core tube (14) and having a marking guide (22) configured to be arranged adjacent the core sample (12) to guide marking; a communications module (26) operable to communicate with the downhole tool (16) to receive data; a user interface (28) operable to convey perceptible feedback to the user; and a processor (30) and associated memory (32). The processor (30) is configured to store data in the memory (32) and determine a marking position based on the data, and operate the user interface (28) to direct the user to cause relative rotation of the marking guide (22) and the core sample (12) so that the marking guide (22) is aligned with the marking position, allowing the user to use the marking guide (22) to mark the core sample (12) at the marking position.

IPC Classes  ?

• E21B 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
• B25H 7/04 - Devices, e.g. scribers, for marking

Abstract

A locator for positioning and/or stabilising a survey apparatus in a borehole comprising: two opposing members for cooperatively coupling together around a survey apparatus, the survey apparatus comprising at least one profiled region for a locator on the survey apparatus, each opposing member comprising: at least a first apparatus coupling, the first 5 apparatus coupling configured to connect to a respective first apparatus coupling of the corresponding opposing member around the survey apparatus, one or more bearing members for bearing against a borehole, and wherein: the at least first apparatus coupling is configured to engage with the at least one profiled region on the survey apparatus to, when one opposing member is cooperatively coupled with the corresponding opposing member 0 around the survey apparatus, constrain the resultant locator on the survey apparatus longitudinally and/or rotationally.

IPC Classes  ?

• E21B 17/10 - Wear protectorsCentralising devices

Abstract

A measurement device (MD) for measuring depth within a borehole comprising a sensing component including, at least, a plurality of accelerometers configured to generate accelerometer data as the MD moves through the borehole. The MD further comprises a controller component configured to correct the accelerometer data generated by the sensing component by: repeatedly, for each of a plurality of movement periods in which the MD moves within the borehole: altering the accelerometer data generated during the movement period to reduce errors associated with the movement of the MD, based on the accelerometer data generated in at least one of a first stationary period of the MD and a second stationary period of the MD, the first and second stationary periods occurring respectively before and after the movement period, wherein each of the plurality of movement periods corresponds to extraction of a portion of the drill string from the borehole.

IPC Classes  ?

• E21B 47/04 - Measuring depth or liquid level
• 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
• E21B 47/024 - Determining slope or direction of devices in the borehole

Abstract

A tool for installation in a drill string for delivering, retrieving, activating and/or deactivating one or more downhole tools for performing one or more downhole functions with a drill string, the tool comprising: an outer body, a control shaft with at least one fluid path from the inside to the outside of the control shaft, a wireline coupling for connection to a wireline, and a lodgement assembly that is deployable to secure the tool within the drill string and/or bottom hole assembly and allow fluid flow in the fluid path when the tool has reached an installed position, the lodgement assembly comprising: a latch that is free to deploy when the tool reaches the installed position, and a valve with a valve actuator with movement interdependent on and/or constrained by the latch, wherein during installation: if the tool reaches the installed position, the latch is free to deploy and the valve actuator is free to move into an operational position that permits fluid flow in the fluid path, if the tool does not reach the installed position, the latch is not free to deploy and constrains the tethered valve actuator in a closed position that prevents fluid flow in the fluid path.

IPC Classes  ?

• E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
• E21B 10/64 - Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
• 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 21/10 - Valves arrangements in drilling-fluid circulation systems
• E21B 23/12 - Tool diverters
• E21B 25/02 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
• E21B 34/14 - Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools

Abstract

A shock absorber (24) for a downhole tool (18) is disclosed. The shock absorber (24) includes a downhole portion (32) defining a bore (34), and an uphole portion (36) configured for direct or indirect connection to the downhole tool (18). The uphole portion (36) has a stanchion (38) extending from one end and which carries a piston (40). The piston (40) is slidably engaged with the bore (34) to allow relative axial movement of the uphole portion (36) and the downhole portion (32). A first resiliently deformable member (42) is arranged between the uphole portion (36) and the downhole portion (32), and arranged to be compressed when the uphole portion (36) and downhole portion (32) move axially relative to each other in a first direction. A second resiliently deformable member (44) is arranged between an end of the bore (34) and the piston (40) to be compressed when the uphole portion (36) and downhole portion (32) move axially relative to each other in a second direction opposite to the first direction.

IPC Classes  ?

• E21B 17/02 - CouplingsJoints
• E21B 47/017 - Protecting measuring instruments
• E21B 17/07 - Telescoping joints for varying drill string lengthsShock absorbers
• E21B 17/10 - Wear protectorsCentralising devices
• E21B 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
• E21B 31/18 - Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot
• E21B 41/00 - Equipment or details not covered by groups

Abstract

A contactless orientation system coupled with an inner core tube to one or more record carriers on or associated with a core sample held in the core tube having a longitudinal core axis and a core face accessible from an end of the inner core tube. An instrument guide is coupled to the end of the core tube from which the core face is accessible with an axis of the guide parallel to the core axis. Correlation information is generated between a rotational orientation of a known point P on the instrument guide about the guide axis and core orientation data known to the contactless orientation system. The instrument acts as the record carrier or generates the record carrier provided with the correlation information enabling orientation of the core sample to its in-situ orientation when released from the core tube.

IPC Classes  ?

• E21B 47/09 - Locating or determining the position of objects in boreholes or wellsIdentifying the free or blocked portions of pipes
• E21B 25/00 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
• E21B 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
• E21B 47/024 - Determining slope or direction of devices in the borehole
• E21B 47/26 - Storing data down-hole, e.g. in a memory or on a record carrier

Abstract

A shock absorber (24) for a downhole tool (18) is disclosed. The shock absorber (24) includes a downhole portion (32) defining a bore (34), and an uphole portion (36) configured for direct or indirect connection to the downhole tool (18). The uphole portion (36) has a stanchion (38) extending from one end and which carries a piston (40). The piston (40) is slidably engaged with the bore (34) to allow relative axial movement of the uphole portion (36) and the downhole portion (32). A first resiliently deformable member (42) is arranged between the uphole portion (36) and the downhole portion (32), and arranged to be compressed when the uphole portion (36) and downhole portion (32) move axially relative to each other in a first direction. A second resiliently deformable member (44) is arranged between an end of the bore (34) and the piston (40) to be compressed when the uphole portion (36) and downhole portion (32) move axially relative to each other in a second direction opposite to the first direction.

IPC Classes  ?

• E21B 41/00 - Equipment or details not covered by groups
• E21B 47/017 - Protecting measuring instruments
• E21B 17/02 - CouplingsJoints
• E21B 17/07 - Telescoping joints for varying drill string lengthsShock absorbers
• E21B 17/10 - Wear protectorsCentralising devices
• E21B 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
• E21B 31/18 - Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot

Abstract

A method for logging a borehole, comprising: receiving hole data representing the borehole, wherein the hole data includes at least a collar position indicating a location of the collar of the borehole; determining a measurement reference position indicating a reference location of a measurement device configured to be deployed into the borehole; receiving, from a depth logging device, one or more depth values of the measurement device in response to the deployment, from the reference location, of the measurement device to measure the borehole; and determining one or more corrected depth values based on the one or more depth values, the collar position, and the measurement reference position.

IPC Classes  ?

• E21B 47/04 - Measuring depth or liquid level
• E21B 47/09 - Locating or determining the position of objects in boreholes or wellsIdentifying the free or blocked portions of pipes

Abstract

A method for logging a borehole, comprising: receiving hole data representing the borehole, wherein the hole data includes at least a collar position indicating a location of the collar of the borehole; determining a measurement reference position indicating a reference location of a measurement device configured to be deployed into the borehole; receiving, from a depth logging device, one or more depth values of the measurement device in response to the deployment, from the reference location, of the measurement device to measure the borehole; and determining one or more corrected depth values based on the one or more depth values, the collar position, and the measurement reference position.

IPC Classes  ?

• E21B 47/04 - Measuring depth or liquid level
• E21B 47/09 - Locating or determining the position of objects in boreholes or wellsIdentifying the free or blocked portions of pipes
• 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

Abstract

A system 10 and method 50 of enabling the acquisition of borehole survey data and core orientation data in a single instrument trip in a core drill 12 having a drill string 18 and an inner core barrel assembly 16. The method uses a borehole survey tool 14 that is arranged to at least log its position in three-dimensional space. The borehole survey tool 14 is run down the drill string 12 in which the inner core barrel assembly 16 is installed. The inner core barrel assembly 16 is arranged to either provide or facilitate detection of an indication of tool face of a core sample 24 held in the inner core barrel assembly 16. The indication of tool face is then transferred mechanically or electronically to the visiting borehole survey tool 14.

IPC Classes  ?

• E21B 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
• E21B 25/02 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
• 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

Abstract

An installation apparatus for a measurement tool in an underground mine with overhead drill holes, the installation apparatus comprising: a support that can be removably secured to the ceiling, wall and/or ground of the mine, and an installation conduit that can be removably coupled to the support and aligned with the drill hole to deploy a survey and/or geophysical tool into the open drill hole.

IPC Classes  ?

• E21B 19/084 - Apparatus for feeding the rods or cablesApparatus for increasing or decreasing the pressure on the drilling toolApparatus for counterbalancing the weight of the rods with flexible drawing means, e.g. cables
• E21B 23/14 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
• E21B 47/02 - Determining slope or direction
• E21B 47/08 - Measuring diameters or related dimensions at the borehole

Abstract

An installation apparatus for a measurement tool in an underground mine with overhead drill holes, the installation apparatus comprising: a support that can be removably secured to the ceiling, wall and/or ground of the mine, and an installation conduit that can be removably coupled to the support and aligned with the drill hole to deploy a survey and/or geophysical tool into the open drill hole.

IPC Classes  ?

• E21B 47/02 - Determining slope or direction
• E21B 47/08 - Measuring diameters or related dimensions at the borehole
• E21B 19/084 - Apparatus for feeding the rods or cablesApparatus for increasing or decreasing the pressure on the drilling toolApparatus for counterbalancing the weight of the rods with flexible drawing means, e.g. cables
• E21B 23/14 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells

Abstract

Downhole tool assembly (10) for mounting to a core barrel assembly (12) including a core tube (14) and a pair of split tubes (16). The downhole tool assembly (10) includes a downhole tool (18) and at least one sleeve (20) dimensioned to slidingly engage the split tubes (16) to inhibit radial movement of the split tubes (16) and receive and retain the downhole tool (18) coaxially with the core tube (14). Core ejection pistons (72), and methods for extracting a core from bedrock are also disclosed. A housing assembly (120) for a downhole tool, downhole assemblies (180, 200), and methods of assembling such assemblies are also disclosed.

IPC Classes  ?

• 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 49/02 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
• E21B 25/00 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
• E21B 25/04 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe the core receiver having a core forming cutting edge or element, e.g. punch type core barrels

Abstract

Downhole tool assembly (10) for mounting to a core barrel assembly (12) including a core tube (14) and a pair of split tubes (16). The downhole tool assembly (10) includes a downhole tool (18) and at least one sleeve (20) dimensioned to slidingly engage the split tubes (16) to inhibit radial movement of the split tubes (16) and receive and retain the downhole tool (18) coaxially with the core tube (14). Core ejection pistons (72), and methods for extracting a core from bedrock are also disclosed. A housing assembly (120) for a downhole tool, downhole assemblies (180, 200), and methods of assembling such assemblies are also disclosed.

IPC Classes  ?

• E21B 25/00 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
• E21B 25/04 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe the core receiver having a core forming cutting edge or element, e.g. punch type core barrels
• 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 49/02 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil

Abstract

A drill hole logging system (5) incorporates a computing system (58) at the surface and a deployment mechanism (40) for conveying a logging tool (10) configured to measure one or more geophysical parameters into a drill hole (20). A transmission means (57) communicates commands and data representing the geophysical parameters between the surface computing system and the logging tool. A borehole caliper (300) is employed to profile the inside of the borehole.

IPC Classes  ?

• G01V 11/00 - Prospecting or detecting by methods combining techniques covered by two or more of main groups
• E21B 47/08 - Measuring diameters or related dimensions at the borehole
• G01V 3/28 - 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 using induction coils
• G01V 5/04 - Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging

Abstract

A magnetic susceptibility and conductivity tool (10) which incorporates a transmitter coil (4) energized with a time-varying current from a transmitter coil drive (13). The transmitter coil drive receives a clock signal and induces a data signal (99) including a primary mutual coupling signal and a formation coupling signal. A receiver coil (1) outputs a receiver coil voltage induced by the data signal. A transmitter coil current sense circuit (15) receives current from the transmitter coil and outputs a digital coil current voltage signal. A synthetic null circuit (14) receives the digital current voltage signal and multiplies the digital current voltage signal with a predetermined constant (28) for amplitude of a base primary mutual coupling signal and shifts phase with a predetermined phase offset (27) to output a synthetic null signal (104).

IPC Classes  ?

• G01V 3/28 - 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 using induction coils

Abstract

The disclosure relates to a thread formation and to a downhole tool comprising a hollow tubular pipe section having an end on which the thread formation is provided. The thread formation comprises a first thread having a first thread start and a second thread having a second thread start, wherein the first thread start is operatively rotationally in advance of the second thread start. Accordingly, the first thread is configured to engage at least partially with a complementary thread formation on another downhole tool before the second thread engages with the complementary thread formation.

IPC Classes  ?

• E21B 17/042 - CouplingsJoints between rod and bit, or between rod and rod threaded

Abstract

A drive sub for a drilling assembly includes a tubular body configured to receive and releasably engage a drilling tool. The body has inner and outer faces and further has a castellated edge provided on its operative downhole end, which edge defines a plurality of lugs separated from each other by intervening slots. In one aspect the drive sub has a contour profile provided at least partially along a circumference of the castellated edge, wherein the contour profile traverses the castellated edge substantially from the inner face to the outer face. In another aspect the drive sub has a channel provided in each of the lugs, wherein the channel at least partially traverses the lugs and leads from an inlet opening on the castellated edge to an outlet opening on the outer face. The contour profile and/or channel facilitate flow of drilling fluid and cuttings past the lugs during use.

IPC Classes  ?

• 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 21/00 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
• E21B 10/64 - Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
• E21B 17/10 - Wear protectorsCentralising devices

Abstract

A sensor gimbal system employs one sensor gimbal on which a sensor is mounted. The sensor gimbal is configured to orient a sensitive axis of the sensor with respect to a survey instrument. A sensor motor assembly is configured to rotate the sensor gimbal between a first hard stops and a second hard stop. A dowel pin extends from the mating bevel gear to engage the hard stops. A flex circuit has a flex cable from a sensor PCB, on which the sensor is mounted, to an electronic circuit board.

IPC Classes  ?

• E21B 47/017 - Protecting measuring instruments
• G01C 19/5712 - Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using masses driven in reciprocating rotary motion about an axis the devices involving a micromechanical structure
• G01C 15/00 - Surveying instruments or accessories not provided for in groups
• E21B 47/022 - Determining slope or direction of the borehole, e.g. using geomagnetism
• F16M 11/12 - Means for attachment of apparatusMeans allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction
• F16M 11/18 - Heads with mechanism for moving the apparatus relatively to the stand

Abstract

There is disclosed a torque transfer apparatus for a mineral drilling tool used in a downhole assembly of a drill string. The drilling tool has a downhole drill bit and one or more uphole drill bits spaced apart from the downhole drill bit, with the torque transfer apparatus being located between them. The apparatus has an axial bore therethrough for fluid flow and comprises first and second members being rotatably joined to each other. The apparatus rotationally couples and transfers torque between the first and second members when a torque difference between torque on the downhole drill bit and torque on the uphole drill bit is below a threshold torque value. The apparatus disengages the rotational coupling while the torque difference exceeds the threshold torque value. The flow rate of drilling fluid flowing through the axial bore is altered when the apparatus engages and disengages the coupling.

IPC Classes  ?

• E21B 17/043 - CouplingsJoints between rod and bit, or between rod and rod threaded with locking means
• E21B 17/07 - Telescoping joints for varying drill string lengthsShock absorbers
• F16D 3/10 - Couplings with means for varying the angular relationship of two coaxial shafts during motion
• F16D 7/02 - Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
• F16D 7/10 - Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with intermediate balls or rollers moving radially between engagement and disengagement

Abstract

An inner core barrel assembly incorporates an inner core tube. A body is connected to the inner core tube with a coupling mechanism. The coupling mechanism is configured to maintain a fixed rotational orientation with the inner core tube. The body includes a flow path for liquid within the inner core tube to flow as the inner core barrel assembly descends through a drill string. a core orientation system is contained within the body and positioned within the inner core tube.

IPC Classes  ?

• E21B 34/08 - Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
• E21B 25/00 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
• E21B 25/02 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
• E21B 41/00 - Equipment or details not covered by groups

Abstract

A vehicle transportable dosing apparatus for mixing additive fluid with a primary fluid to prepare a drilling fluid including a dynamic mixer with a primary fluid inlet, a first additive fluid inlet and a drilling fluid outlet. The mixer is configured to receive and control the ratio of primary fluid and additive fluid to prepare drilling fluid.

IPC Classes  ?

• E21B 21/08 - Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
• E21B 21/00 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
• E21B 41/00 - Equipment or details not covered by groups
• C09K 8/02 - Well-drilling compositions

Goods & Services

Borehole surveying instruments; installations for surveying purposes; instruments for surveying physical data; apparatus for remote surveying; borehole surveying apparatus; electronic apparatus for surveying; surveying apparatus and instruments; computer hardware for use with drilling apparatus; computer hardware for use with drilling instrument; computer hardware for use with drilling operations; computer programs for dynamic simulation of oil well drilling; computer programs for electronic image processing; electronic image processing apparatus; electronic image processing instruments; programs for electronic image processing; computer programs for providing a graphical presentation of data; computer programs for scientific data analysis; recorded computer programs for scientific research; apparatus for data processing; computer programs for the analysis of data processing procedures; electric apparatus for data processing; data processing apparatus; data processing apparatus for use with computers; data processing devices; electrical data processing apparatus; apparatus for interconnecting data processing equipment; couplers (data processing equipment); data processing equipment; electronic apparatus for data processing; electronic data processing apparatus; electronic data processing devices; electronic data processing equipment; readers (data processing equipment); scanners (data processing equipment); data processing systems; data processing instruments; data processing programmes; data processing machines; data processing software for graphic representations; data processing software; display apparatus for use with data processing installations; instruments for electronic data processing; computer programs for data processing; programs for data-processing; real-time data processing apparatus; remote data processing apparatus; terminals for remote data processing; sensors for real time data input apparatus; sensors for real time data output apparatus; electrical apparatus for data acquisition; data acquisition instruments; data acquisition apparatus; apparatus for the acquisition of data; airborne data acquisition apparatus; application software; communication software; communications processing computer software; computer software; computer software (programs); computer software (recorded); computer software for use in controlling machines; computer software programs; data communications software; downloadable software applications (apps); integrated software packages; interactive computer software; interfaces between application programs and firmware on real-time computers; computer interfaces; computer interface units; interface apparatus for computing apparatus; interfaces (for computers); peripheral interface units for computers; process control operator interface units.

Abstract

A downhole device delivery and drive transfer system includes a sub which is arranged to attach to a drill string and a tool which is configured to enable it to travel through the drill string and releasably couple to the sub. The sub and the tool are arranged so that when they are releasably coupled to each other torque imparted to the drill string is transferred by the sub to the tool. The tool is arranged to carry one or more devices for performing one or more downhole functions such as core drilling, hole reaming or wedge placement for directional drilling. The system also has a guide mechanism that operates between the sub and the tool to guide the tool to a known rotational orientation relative to the sub as the tool travels into the sub. A fluid control system controls the flow of fluid through the tool through a downhole outlet and a plurality of ports intermediate opposite ends of the tool.

IPC Classes  ?

• E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
• 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 23/12 - Tool diverters
• E21B 10/64 - Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
• E21B 21/10 - Valves arrangements in drilling-fluid circulation systems
• E21B 25/02 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
• E21B 34/14 - Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
• E21B 7/28 - Enlarging drilled holes, e.g. by counterboring

Goods & Services

(1) Surveying instruments used in boreholes; Installations for surveying purposes, namely, surveying instruments; instruments for surveying physical data, namely, leveling rods for surveying and lasers for surveying; apparatus for remote surveying, namely, manipulators and remote controls for the remote operation of surveying instruments; computer hardware for use with drilling apparatus; computer hardware for use with drilling instrument; computer hardware for use with drilling operations; computer programs for dynamic simulation of oil well drilling; computer programs for electronic image processing; electronic image processing apparatus, namely, image scanners, optical fibers for the transmission of sounds and images, raster image processors; Downloadable computer programs for electronic image processing; computer programs for providing a graphical presentation of data; computer programs for scientific data analysis, namely, computer software for analysing minerology data and spectral data; recorded computer programs for scientific research, namely, recorded computer software for scientific research in the field of mineralogy; computer programs for the analysis of data processing procedures, namely, computer software for accessing, querying and analyzing information stored in databases and data warehouse; apparatus for interconnecting data processing equipment, namely, video cables, optical cables; data processing equipment, namely, fiber optic couplers, optical disc readers, digital input and output scanners and borehole surveying instruments; electronic apparatus for data processing, namely, fiber optic couplers, optical disc readers, digital input and output scanners and borehole surveying instruments; electronic data processing apparatus, namely, fiber optic couplers, optical disc readers, digital input and output scanners and borehole surveying instruments; electronic data processing devices, namely, fiber optic couplers, optical disc readers, digital input and output scanners and borehole surveying instruments; electronic data processing equipment, namely, fiber optic couplers, optical disc readers, digital input and output scanners and borehole surveying instruments; image processing computer software programs; data processing software for graphic representations, namely, computer software for visualization and analysis of borehole survey information; display apparatus for use with data processing installations, namely, computer display monitors and computer display screens; real-time data processing apparatus, namely, computer software for real-time visualization and analysis of borehole survey information; remote data processing apparatus, namely, computer software for remote visualization and analysis of borehole survey information; terminals for remote data processing, namely, interactive touch screen terminals; sensors for real time data input apparatus, namely, camera sensors, distance sensors, heat sensors, motions sensors, optical sensors, oil level sensors, position sensors; sensors for real time data output apparatus, namely, camera sensors, distance sensors, heat sensors, motions sensors, optical sensors, oil level sensors, position sensors; data acquisition instruments, namely, computer hardware, camera sensors, distance sensors, heat sensors, motions sensors, optical sensors, oil level sensors, position sensors and borehole survey instruments; airborne data acquisition apparatus, namely, computer hardware, camera sensors, distance sensors, heat sensors, motions sensors, optical sensors, oil level sensors, position sensors; recorded computer application software for mobile phones, survey instruments, handheld computers, and computers for use in database management, electronic storage, processing, analysing and visualising of borehole survey information; downloadable communication software for providing access to the internet, and for providing multiple user access to a global computer information network; downloadable computer software for use in database management; downloadable computer software for use in mineralogy database management; downloadable computer software for use in management of spectral data; downloadable computer software for use in controlling, borehole surveying instruments, optical sensors, and borehole drilling instruments and machines; integrated software packages, namely, recorded computer operating system software; integrated software packages for analysing mineralogy data; integrated software packages for analysing spectral data; interactive computer software for use in database management; interactive computer software for use in analysing minerology data; interactive computer software for use in analysing spectral data; interfaces between application programs and firmware on real-time computers, namely, computer operating system interface software; computer interface cards; computer interface units, namely, interface boards for computers; interface apparatus for computing apparatus, namely, downloadable computer software for use as an application programming interface (API) for use in the fields of database management.

Goods & Services

Borehole surveying instruments; installations for surveying purposes; instruments for surveying physical data; apparatus for remote surveying; borehole surveying apparatus; electronic apparatus for surveying; surveying apparatus and instruments; computer hardware for use with drilling apparatus; computer hardware for use with drilling instrument; computer hardware for use with drilling operations; downloadable computer programs for dynamic simulation of oil well drilling; downloadable computer programs for electronic image processing; electronic image processing apparatus; electronic image processing instruments; downloadable programs for electronic image processing; downloadable computer programs for providing a graphical presentation of data; downloadable computer programs for scientific data analysis; recorded computer programs for data acquisition and data processing in the field of scientific research; apparatus for data processing; downloadable computer programs for the analysis of data processing procedures; electric apparatus for data processing; data processing apparatus; data processing apparatus for use with computers; data processing devices; electrical data processing apparatus; apparatus for interconnecting data processing equipment; data processing equipment, namely, couplers, readers, scanners and borehole surveying instruments; electronic apparatus for data processing; electronic data processing apparatus; electronic data processing devices; electronic data processing equipment; data processing systems, namely, downloadable computer software and borehole surveying instruments for use in processing, analysing and visualising data; data processing instruments; downloadable data processing software programmes; data processing machines; data processing software for visualization in the nature of graphic representations and analysis of borehole survey data; downloadable data processing software; display apparatus for use with data processing installations; instruments for electronic data processing; downloadable computer programs for data processing; downloadable programs for data-processing; real-time data processing apparatus; remote data processing apparatus; terminals for remote data processing; sensors for real time data input apparatus; sensors for real time data output apparatus; electrical apparatus for data acquisition, namely, computer hardware, sensors and borehole survey instruments; data acquisition instruments, namely, computer hardware, sensors and borehole survey instruments; data acquisition apparatus, namely, computer hardware, sensors and borehole survey instruments; apparatus for the acquisition of data, namely, computer hardware, sensors and borehole survey instruments; airborne data acquisition apparatus, namely, computer hardware, sensors; recorded computer application software for mobile phones, survey instruments, handheld computers, computers, namely, software for use in database management, electronic storage of data and processing, analysing and visualising borehole survey data; downloadable communication software for providing access to the internet, connecting computer network users; downloadable communications processing computer software for providing access to the internet, connecting computer network users; downloadable computer software for use in database management in the field of borehole surveying, data acquisition, data processing; downloadable computer software programs for use in database management in the field of borehole surveying data acquisition, data processing; recorded computer software for use in database management in the field of borehole surveying, data acquisition, data processing; downloadable computer software for use in controlling machines, namely, borehole surveying instruments and apparatus, sensors, drilling instruments and apparatus; recorded computer software programs for use in database management in the field of borehole surveying, data acquisition, data processing; downloadable data communications software for providing access to the internet, connecting computer network users; downloadable software applications, namely, computer application software for mobile phones for use in database management, electronic storage of data and borehole surveying, data acquisition, data processing; integrated software packages, namely, recorded computer operating system software; interactive computer software for use in database management in the field of borehole surveying, data acquisition, data processing; interfaces between application programs and firmware on real-time computers; computer interfaces; computer interface units; interface apparatus for computing apparatus; interfaces for computers; peripheral interface units for computers; process control operator interface units

Abstract

A drill hole logging system (5) incorporates a computing system (58) at the surface and a deployment mechanism (40) for conveying a logging tool (10) configured to measure one or more geophysical parameters into a drill hole (20). A transmission means (57) communicates commands and data representing the geophysical parameters between the surface computing system and the logging tool. A borehole caliper (300) is employed to profile the inside of the borehole.

IPC Classes  ?

• G01V 5/04 - Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging
• E21B 47/07 - Temperature
• E21B 47/11 - Locating fluid leaks, intrusions or movements using tracersLocating fluid leaks, intrusions or movements using radioactivity
• E21B 47/06 - Measuring temperature or pressure
• E21B 47/08 - Measuring diameters or related dimensions at 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
• G01V 5/06 - Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging for detecting naturally radioactive minerals
• 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

Abstract

A magnetic susceptibility and conductivity tool (10) which incorporates a transmitter coil (4) energized with a time-varying current from a transmitter coil drive (13). The transmitter coil drive receives a clock signal and induces a data signal (99) including a primary mutual coupling signal and a formation coupling signal. A receiver coil (1) outputs a receiver coil voltage induced by the data signal. A transmitter coil current sense circuit (15) receives current from the transmitter coil and outputs a digital coil current voltage signal. A synthetic null circuit (14) receives the digital current voltage signal and multiplies the digital current voltage signal with a predetermined constant (28) for amplitude of a base primary mutual coupling signal and shifts phase with a predetermined phase offset (27) to output a synthetic null signal (104).

IPC Classes  ?

• G01V 3/08 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
• G01V 3/12 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with electromagnetic waves
• 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

Abstract

A magnetic susceptibility and conductivity tool (10) which incorporates a transmitter coil (4) energized with a time-varying current from a transmitter coil drive (13). The transmitter coil drive receives a clock signal and induces a data signal (99) including a primary mutual coupling signal and a formation coupling signal. A receiver coil (1) outputs a receiver coil voltage induced by the data signal. A transmitter coil current sense circuit (15) receives current from the transmitter coil and outputs a digital coil current voltage signal. A synthetic null circuit (14) receives the digital current voltage signal and multiplies the digital current voltage signal with a predetermined constant (28) for amplitude of a base primary mutual coupling signal and shifts phase with a predetermined phase offset (27) to output a synthetic null signal (104).

IPC Classes  ?

• G01V 3/08 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
• 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 3/12 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with electromagnetic waves

Abstract

A drill hole logging system (5) incorporates a computing system (58) at the surface and a deployment mechanism (40) for conveying a logging tool (10) configured to measure one or more geophysical parameters into a drill hole (20). A transmission means (57) communicates commands and data representing the geophysical parameters between the surface computing system and the logging tool. A borehole caliper (300) is employed to profile the inside of the borehole.

IPC Classes  ?

• G01V 5/04 - Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging
• 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 5/06 - Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging for detecting naturally radioactive minerals
• E21B 47/08 - Measuring diameters or related dimensions at 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 47/06 - Measuring temperature or pressure
• E21B 47/07 - Temperature
• E21B 47/11 - Locating fluid leaks, intrusions or movements using tracersLocating fluid leaks, intrusions or movements using radioactivity

Abstract

The disclosure relates to a thread formation and to a downhole tool comprising a hollow tubular pipe section having an end on which the thread formation is provided. The thread formation comprises a first thread having a first thread start and a second thread having a second thread start, wherein the first thread start is operatively rotationally in advance of the second thread start. Accordingly, the first thread is configured to engage at least partially with a complementary thread formation on another downhole tool before the second thread engages with the complementary thread formation.

IPC Classes  ?

• E21B 17/042 - CouplingsJoints between rod and bit, or between rod and rod threaded

Abstract

A drive sub for a drilling assembly includes a tubular body configured to receive and releasably engage a drilling tool. The body has inner and outer faces and further has a castellated edge provided on its operative downhole end, which edge defines a plurality of lugs separated from each other by intervening slots. In one aspect the drive sub has a contour profile provided at least partially along a circumference of the castellated edge, wherein the contour profile traverses the castellated edge substantially from the inner face to the outer face. In another aspect the drive sub has a channel provided in each of the lugs, wherein the channel at least partially traverses the lugs and leads from an inlet opening on the castellated edge to an outlet opening on the outer face. The contour profile and/or channel facilitate flow of drilling fluid and cuttings past the lugs during use.

IPC Classes  ?

• E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod
• E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells

Abstract

A drive sub for a drilling assembly includes a tubular body configured to receive and releasably engage a drilling tool. The body has inner and outer faces and further has a castellated edge provided on its operative downhole end, which edge defines a plurality of lugs separated from each other by intervening slots. In one aspect the drive sub has a contour profile provided at least partially along a circumference of the castellated edge, wherein the contour profile traverses the castellated edge substantially from the inner face to the outer face. In another aspect the drive sub has a channel provided in each of the lugs, wherein the channel at least partially traverses the lugs and leads from an inlet opening on the castellated edge to an outlet opening on the outer face. The contour profile and/or channel facilitate flow of drilling fluid and cuttings past the lugs during use.

IPC Classes  ?

• E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod
• E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells

Abstract

The disclosure relates to a thread formation and to a downhole tool comprising a hollow tubular pipe section having an end on which the thread formation is provided. The thread formation comprises a first thread having a first thread start and a second thread having a second thread start, wherein the first thread start is operatively rotationally in advance of the second thread start. Accordingly, the first thread is configured to engage at least partially with a complementary thread formation on another downhole tool before the second thread engages with the complementary thread formation.

IPC Classes  ?

• E21B 17/042 - CouplingsJoints between rod and bit, or between rod and rod threaded

Abstract

A contactless orientation system coupled with an inner core tube to one or more record carriers on or associated with a core sample held in the core tube having a longitudinal core axis and a core face accessible from an end of the inner core tube. An instrument guide is coupled to the end of the core tube from which the core face is accessible with an axis of the guide parallel to the core axis. Correlation information is generated between a rotational orientation of a known point P on the instrument guide about the guide axis and core orientation data known to the contactless orientation system. The instrument acts as the record carrier or generates the record carrier provided with the correlation information enabling orientation of the core sample to its in-situ orientation when released from the core tube.

IPC Classes  ?

• E21B 47/09 - Locating or determining the position of objects in boreholes or wellsIdentifying the free or blocked portions of pipes
• E21B 47/26 - Storing data down-hole, e.g. in a memory or on a record carrier
• E21B 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
• E21B 25/00 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
• E21B 47/024 - Determining slope or direction of devices in the borehole

Abstract

A sensor gimbal system employs one sensor gimbal on which a sensor is mounted. The sensor gimbal is configured to orient a sensitive axis of the sensor with respect to a survey instrument. A sensor motor assembly is configured to rotate the sensor gimbal between a first hard stops and a second hard stop. A dowel pin extends from the mating bevel gear to engage the hard stops. A flex circuit has a flex cable from a sensor PCB, on which the sensor is mounted, to an electronic circuit board.

IPC Classes  ?

• E21B 47/00 - Survey of boreholes or wells
• F16M 11/06 - Means for attachment of apparatusMeans allowing adjustment of the apparatus relatively to the stand allowing pivoting

Abstract

A sensor gimbal system employs one sensor gimbal on which a sensor is mounted. The sensor gimbal is configured to orient a sensitive axis of the sensor with respect to a survey instrument. A sensor motor assembly is configured to rotate the sensor gimbal between a first hard stops and a second hard stop. A dowel pin extends from the mating bevel gear to engage the hard stops. A flex circuit has a flex cable from a sensor PCB, on which the sensor is mounted, to an electronic circuit board.

IPC Classes  ?

• E21B 47/00 - Survey of boreholes or wells
• F16M 11/06 - Means for attachment of apparatusMeans allowing adjustment of the apparatus relatively to the stand allowing pivoting

Abstract

There is disclosed a torque transfer apparatus for a mineral drilling tool used in a downhole assembly of a drill string. The drilling tool has a downhole drill bit and one or more uphole drill bits spaced apart from the downhole drill bit, with the torque transfer apparatus being located between them. The apparatus has an axial bore therethrough for fluid flow and comprises first and second members being rotatably joined to each other. The apparatus rotationally couples and transfers torque between the first and second members when a torque difference between torque on the downhole drill bit and torque on the uphole drill bit is below a threshold torque value. The apparatus disengages the rotational coupling while the torque difference exceeds the threshold torque value. The flow rate of drilling fluid flowing through the axial bore is altered when the apparatus engages and disengages the coupling.

IPC Classes  ?

• E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod
• E21B 4/02 - Fluid rotary type drives
• E21B 10/26 - Drill bits with leading portion, i.e. drill bits with a pilot cutterDrill bits for enlarging the borehole, e.g. reamers
• E21B 10/44 - Bits with helical conveying portion, e.g. screw type bitsAugers with leading portion or with detachable parts
• E21B 10/64 - Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
• E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
• E21B 25/04 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe the core receiver having a core forming cutting edge or element, e.g. punch type core barrels

Abstract

A batch sample preparation apparatus (10) for preparing a geological sample for analysis is described and claimed. The apparatus (10) comprises a dryer (12) having a drying (chamber 52), a sample inlet (20) and at least one sample outlet (22), (24) communicating with the drying chamber (52), to a comminution device (14) in selective fluid communication via valves (26), (28) with the dryer (12) to selectively receive dried sample. The apparatus (10) has a source of fluid (74) introduced at the dryer (12) so that sample material may be transported from the dryer (12) to the comminution device (14) by fluid flow, which fluid flow also extracts the sample material from the comminution device (14) for collection and subsequent analysis.

IPC Classes  ?

• 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
• E21B 21/06 - Arrangements for treating drilling fluids outside the borehole
• F26B 3/06 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
• F26B 3/092 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed agitating the fluidised bed, e.g. by vibrating or pulsating
• F26B 11/16 - Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices the stirring device moving in a vertical or steeply-inclined plane
• F26B 21/04 - Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
• F26B 21/10 - TemperaturePressure
• G01N 1/28 - Preparing specimens for investigation
• G01N 1/34 - PurifyingCleaning
• G01N 33/24 - Earth materials

Abstract

A downhole device delivery and drive transfer system includes a sub which is arranged to attach to a drill string and a tool which is configured to enable it to travel through the drill string and releasably couple to the sub. The sub and the tool are arranged so that when they are releasably coupled to each other torque imparted to the drill string is transferred by the sub to the tool. The tool is arranged to carry one or more devices for performing one or more downhole functions such as core drilling, hole reaming or wedge placement for directional drilling. The system also has a guide mechanism that operates between the sub and the tool to guide the tool to a known rotational orientation relative to the sub as the tool travels into the sub. A fluid control system controls the flow of fluid through the tool through a downhole outlet and a plurality of ports intermediate opposite ends of the tool.

IPC Classes  ?

• E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
• 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 23/12 - Tool diverters
• E21B 21/10 - Valves arrangements in drilling-fluid circulation systems
• E21B 25/02 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
• E21B 7/28 - Enlarging drilled holes, e.g. by counterboring
• E21B 10/64 - Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
• E21B 34/14 - Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools

Abstract

A method of obtaining geological data pertaining to a bore hole that comprises supporting a ground drill and a separate geological instrument (30) on a vehicle (52), the instrument (30) being capable of acquiring geological data including one or more of geophysical data, petro physical data, mineralogical and compositional data and hole geometry data from within the bore hole; drilling a bore hole using a ground drill, the bore hole having an exposed circumferential wall; moving the ground drill out of the bore hole and subsequently out of alignment with the bore hole; lowering and subsequently retrieving the instrument (30) from the bore hole; and, operating the instrument (30) while in the bore hole to acquire geological data of the ground in which the bore hole is drilled.

IPC Classes  ?

• E21B 49/04 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil using explosives in boreholesTesting the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil using projectiles penetrating the wall
• 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
• 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 47/003 - Determining well or borehole volumes
• E21B 47/06 - Measuring temperature or pressure
• E21B 47/08 - Measuring diameters or related dimensions at 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

Goods & Services

Surveying, measuring and scientific apparatus and instruments, including geophysical apparatus and measuring instruments for geophysics; computer software and data processing software for use in the mining, equipment, technology and services industry.

Goods & Services

(1) Surveying, measuring, and scientific instruments for collecting geological data, namely, geophysical instruments for measuring the physical characteristics and the physical properties of a mining bore hole; computer software for collection, processing, and analysis of geological data for use in the mining, equipment, technology and services industry

Goods & Services

Surveying, measuring and scientific apparatus and instruments, including geophysical apparatus and measuring instruments for geophysics, namely, apparatuses and instruments for measuring the physical characteristics and the physical properties of a mining bore hole

Abstract

A downhole device delivery and drive transfer system 10 comprises a sub 12 which is arranged to attach to a drill string 14 and a tool 16 which is configured to enable it to travel through the drill string 14 and releasably couple to the sub 12. The sub 12 and the tool 16 are arranged so that when they are releasably coupled to each other torque imparted to the drill string is transferred by the sub 12 to the tool 16. The tool 16 is arranged to carry one or more devices for performing one or more downhole functions such as core drilling, hole reaming or wedge placement for directional drilling. The system 10 also has a guide mechanism 24 that operates between the sub 12 and the tool 16 to guide the tool 16 to a known rotational orientation relative to the sub 12 as the tool 16 travels into the sub 12. A fluid control system controls the flow of fluid through the tool through a downhole outlet and and a plurality of ports intermediate opposite ends of the tool.

IPC Classes  ?

• E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
• E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod

Abstract

A downhole device delivery and drive transfer system 10 comprises a sub 12 which is arranged to attach to a drill string 14 and a tool 16 which is configured to enable it to travel through the drill string 14 and releasably couple to the sub 12. The sub 12 and the tool 16 are arranged so that when they are releasably coupled to each other torque imparted to the drill string is transferred by the sub 12 to the tool 16. The tool 16 is arranged to carry one or more devices for performing one or more downhole functions such as core drilling, hole reaming or wedge placement for directional drilling. The system 10 also has a guide mechanism 24 that operates between the sub 12 and the tool 16 to guide the tool 16 to a known rotational orientation relative to the sub 12 as the tool 16 travels into the sub 12. A fluid control system controls the flow of fluid through the tool through a downhole outlet and and a plurality of ports intermediate opposite ends of the tool.

IPC Classes  ?

• E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
• E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod

Abstract

A batch sample preparation apparatus (10) for preparing a geological sample for analysis is described and claimed. The apparatus (10) comprises a dryer (12) having a drying (chamber 52), a sample inlet (20) and at least one sample outlet (22), (24) communicating with the drying chamber (52), to a comminution device (14) in selective fluid communication via valves (26), (28) with the dryer (12) to selectively receive dried sample. The apparatus (10) has a source of fluid (74) introduced at the dryer (12) so that sample material may be transported from the dryer (12) to the comminution device (14) by fluid flow, which fluid flow also extracts the sample material from the comminution device (14) for collection and subsequent analysis.

IPC Classes  ?

• G01N 1/28 - Preparing specimens for investigation
• B02C 21/00 - Disintegrating plant with or without drying of the material
• E21B 21/06 - Arrangements for treating drilling fluids outside 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
• F26B 3/06 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
• F26B 11/00 - Machines or apparatus for drying solid materials or objects with movement which is non-progressive
• F26B 17/10 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle

Abstract

A batch sample preparation apparatus (10) for preparing a geological sample for analysis is described and claimed. The apparatus (10) comprises a dryer (12) having a drying (chamber 52), a sample inlet (20) and at least one sample outlet (22), (24) communicating with the drying chamber (52), to a comminution device (14) in selective fluid communication via valves (26), (28) with the dryer (12) to selectively receive dried sample. The apparatus (10) has a source of fluid (74) introduced at the dryer (12) so that sample material may be transported from the dryer (12) to the comminution device (14) by fluid flow, which fluid flow also extracts the sample material from the comminution device (14) for collection and subsequent analysis.

IPC Classes  ?

• G01N 1/28 - Preparing specimens for investigation
• 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
• E21B 21/06 - Arrangements for treating drilling fluids outside the borehole
• F26B 3/06 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
• F26B 11/00 - Machines or apparatus for drying solid materials or objects with movement which is non-progressive
• F26B 17/10 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle
• B02C 21/00 - Disintegrating plant with or without drying of the material

Abstract

A system (10) and method (50) of enabling the acquisition of borehole survey data and core orientation data in a single instrument trip in a core drill (12) having a drill string (18) and an inner core barrel assembly (16). The method uses a borehole survey tool 14 that is arranged to at least log its position in three-dimensional space. The borehole survey tool (14) is run down the drill string (12) in which the inner core barrel assembly (16) is installed. The inner core barrel assembly (16) is arranged to either provide or facilitate detection of an indication of tool face of a core sample (24) held in the inner core barrel assembly (16). The indication of tool face is then transferred mechanically or electronically to the visiting borehole survey tool (14).

IPC Classes  ?

• E21B 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
• E21B 25/02 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
• 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

Abstract

A method of obtaining geological data pertaining to a bore hole that comprises supporting a ground drill and a separate geological instrument (30) on a vehicle (52), the instrument (30) being capable of acquiring geological data including one or more of geophysical data, petro physical data, mineralogical and compositional data and hole geometry data from within the bore hole; drilling a bore hole using a ground drill, the bore hole having an exposed circumferential wall; moving the ground drill out of the bore hole and subsequently out of alignment with the bore hole; lowering and subsequently retrieving the instrument (30) from the bore hole; and, operating the instrument (30) while in the bore hole to acquire geological data of the ground in which the bore hole is drilled.

IPC Classes  ?

• 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
• E21B 49/04 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil using explosives in boreholesTesting the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil using projectiles penetrating the wall
• E21B 7/02 - Drilling rigs characterised by means for land transport, e.g. skid mounting or wheel mounting

Abstract

A method of obtaining geological data pertaining to a bore hole that comprises supporting a ground drill and a separate geological instrument (30) on a vehicle (52), the instrument (30) being capable of acquiring geological data including one or more of geophysical data, petro physical data, mineralogical and compositional data and hole geometry data from within the bore hole; drilling a bore hole using a ground drill, the bore hole having an exposed circumferential wall; moving the ground drill out of the bore hole and subsequently out of alignment with the bore hole; lowering and subsequently retrieving the instrument (30) from the bore hole; and, operating the instrument (30) while in the bore hole to acquire geological data of the ground in which the bore hole is drilled.

IPC Classes  ?

• 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
• E21B 7/02 - Drilling rigs characterised by means for land transport, e.g. skid mounting or wheel mounting
• E21B 49/04 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil using explosives in boreholesTesting the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil using projectiles penetrating the wall

Abstract

A check valve (18) may be incorporated in an inner core barrel assembly (10). The check valve (18) has a valve body (20) defining a fluid flow path FP and provided with a valve seat (24). A valve member (22) is located in the valve body (20) and coupled to the valve body (20) by a coupling mechanism (37). The coupling mechanism (37) is arranged to allow the valve member (22) to move linearly in an axial direction relative to the valve body (20) onto and off of the valve seat (24) and maintain a fixed rotational relationship with the valve body (20). A data acquisition system (60) can be held in the valve member (22) and by virtue of the coupling mechanism be maintained rotationally fixed relative to the valve body an inner core tube (16) of an inner core barrel assembly (10).

IPC Classes  ?

• E21B 47/00 - Survey of boreholes or wells
• E21B 34/08 - Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
• F16K 15/02 - Check valves with guided rigid valve members
• F16K 27/02 - Construction of housingsUse of materials therefor of lift valves

Abstract

A check valve (18) may be incorporated in an inner core barrel assembly (10). The check valve (18) has a valve body (20) defining a fluid flow path FP and provided with a valve seat (24). A valve member (22) is located in the valve body (20) and coupled to the valve body (20) by a coupling mechanism (37). The coupling mechanism (37) is arranged to allow the valve member (22) to move linearly in an axial direction relative to the valve body (20) onto and off of the valve seat (24) and maintain a fixed rotational relationship with the valve body (20). A data acquisition system (60) can be held in the valve member (22) and by virtue of the coupling mechanism be maintained rotationally fixed relative to the valve body an inner core tube (16) of an inner core barrel assembly (10).

IPC Classes  ?

• F16K 15/02 - Check valves with guided rigid valve members
• E21B 10/02 - Core bits
• F16K 27/02 - Construction of housingsUse of materials therefor of lift valves

Abstract

A check valve may be incorporated in an inner core barrel assembly. The check valve has a valve body defining a fluid flow path and provided with a valve seat. A valve member is located in the valve body and is coupled to the valve body by a coupling mechanism. The coupling mechanism is arranged to allow the valve member to move linearly in an axial direction relative to the valve body on to and off of the valve seat and maintain a fixed rotational relationship with the valve body. A data acquisition system can be held in the valve member and by virtue of the coupling mechanism be maintained rotationally fixed relative to the valve body an inner core tube of an inner core barrel assembly.

IPC Classes  ?

• E21B 34/08 - Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
• E21B 25/02 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
• E21B 25/00 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
• E21B 41/00 - Equipment or details not covered by groups

Abstract

A method (60) of determining core orientation of a core sample (12) cut from the ground by a drill rig (10) having a drill string and a drill bit (20) coupled to a downhole end of the drill string. Drilling data (Cn, Rn) is continuously acquired while the drill rig (10) is operating to cut and retrieve the core sample (12). The drilling data is a combination of core orientation data Cn and rig operational data Rn, where the rig operational data is constituted by either one or both of: (a) near bit rig data Nn; and, (b) at surface rig data Sn. The drilling data is analysed for a specific pattern of rig operational data Rn indicative of the core sample being broken from ground by operation of the drill rig (10). On detection of the specific pattern, the orientation of the core sample prior to being broken from the ground is the acquired core orientation data Cn coinciding with that specific pattern of rig operational data Rn.

IPC Classes  ?

• E21B 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
• 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 47/024 - Determining slope or direction of devices in the borehole
• G01V 1/50 - Analysing data
• G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators

Abstract

In one aspect, there is disclosed an apparatus for indexing a device about an indexing axis, the apparatus comprising an indexing drive mechanism comprising a drive portion configured in driving engagement with a driven member for indexing the device about the indexing axis. The driven member is arranged in operable association with an assembly comprising at least one resilient element arranged so as to be capable of transitioning to/from a state of bias such that exposure of the device to any undesirable physical forces is reduced to at least some extent.

IPC Classes  ?

• 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 41/00 - Equipment or details not covered by groups
• E21B 47/022 - Determining slope or direction of the borehole, e.g. using geomagnetism
• E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells

Abstract

A method (100) of enabling at surface orientation data transfer from a contactless orientation system (11) coupled with an inner core tube (12) to one or more record carriers on or associated with a core sample (14) held in the core tube, the core sample (14) having a longitudinal core axis (16) and a core face 18 accessible from an end of the inner core tube (14), involves three broad steps. A first step is to couple an instrument guide (20) to the end of the core tube (12) from which the core face (18) is accessible so that an axis (26) of the guide is parallel to the core axis (16). A second step is to generate correlation information between a rotational orientation of a known point P on the instrument guide (20) or an instrument (28a) supported by the instrument guide (20) about the guide axis (26) and core orientation data known to the contactless orientation system (11). A third step is to use or otherwise operate the instrument (28a) to: act as the record carrier; or generate the record carrier provided with the correlation information enabling orientation of the core sample (14) to its in-situ orientation when released from the core tube (12).

IPC Classes  ?

• E21B 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
• E21B 47/26 - Storing data down-hole, e.g. in a memory or on a record carrier
• E21B 47/02 - Determining slope or direction
• E21B 47/09 - Locating or determining the position of objects in boreholes or wellsIdentifying the free or blocked portions of pipes
• E21B 49/02 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil

Abstract

A method (100) of enabling at surface orientation data transfer from a contactless orientation system (11) coupled with an inner core tube (12) to one or more record carriers on or associated with a core sample (14) held in the core tube, the core sample (14) having a longitudinal core axis (16) and a core face 18 accessible from an end of the inner core tube (14), involves three broad steps. A first step is to couple an instrument guide (20) to the end of the core tube (12) from which the core face (18) is accessible so that an axis (26) of the guide is parallel to the core axis (16). A second step is to generate correlation information between a rotational orientation of a known point P on the instrument guide (20) or an instrument (28a) supported by the instrument guide (20) about the guide axis (26) and core orientation data known to the contactless orientation system (11). A third step is to use or otherwise operate the instrument (28a) to: act as the record carrier; or generate the record carrier provided with the correlation information enabling orientation of the core sample (14) to its in-situ orientation when released from the core tube (12).

IPC Classes  ?

• E21B 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
• E21B 47/02 - Determining slope or direction
• E21B 47/09 - Locating or determining the position of objects in boreholes or wellsIdentifying the free or blocked portions of pipes
• E21B 47/26 - Storing data down-hole, e.g. in a memory or on a record carrier
• E21B 49/02 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil

Abstract

A system (10) and method (50) of enabling the acquisition of borehole survey data and core orientation data in a single instrument trip in a core drill (12) having a drill string (18) and an inner core barrel assembly (16). The method uses a borehole survey tool 14 that is arranged to at least log its position in three-dimensional space. The borehole survey tool (14) is run down the drill string (12) in which the inner core barrel assembly (16) is installed. The inner core barrel assembly (16) is arranged to either provide or facilitate detection of an indication of tool face of a core sample (24) held in the inner core barrel assembly (16). The indication of tool face is then transferred mechanically or electronically to the visiting borehole survey tool (14).

IPC Classes  ?

• E21B 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
• 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 47/00 - Survey of boreholes or wells

Abstract

A system (10) and method (50) of enabling the acquisition of borehole survey data and core orientation data in a single instrument trip in a core drill (12) having a drill string (18) and an inner core barrel assembly (16). The method uses a borehole survey tool 14 that is arranged to at least log its position in three-dimensional space. The borehole survey tool (14) is run down the drill string (12) in which the inner core barrel assembly (16) is installed. The inner core barrel assembly (16) is arranged to either provide or facilitate detection of an indication of tool face of a core sample (24) held in the inner core barrel assembly (16). The indication of tool face is then transferred mechanically or electronically to the visiting borehole survey tool (14).

IPC Classes  ?

• E21B 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
• E21B 47/00 - Survey of boreholes or wells
• 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

Abstract

A system method and apparatus for determination of the disposition/orientation of a structural feature or structural feature present in a borehole core, such as a core sample. The apparatus (10) is provided to capturing data on structural features present in the core sample. The apparatus (10) comprises an orientation arrangement configured to determine the orientation, or change in orientation, of the apparatus, and a data-capturing arrangement configured to capture orientation data generated by the orientation arrangement. The orientation arrangement may include a gyroscope. The apparatus (10) also comprises an alignment arrangement operable to align the apparatus with a structural feature relating to the core sample. The alignment arrangement may comprise an alignment indicator operable to provide visual indication on the surface of the core sample. The method may include real-time delivery of data from the point of acquisition to cloud- based storage.

IPC Classes  ?

• G01N 33/24 - Earth materials
• 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 9/00 - Prospecting or detecting by methods not provided for in groups

Abstract

In one aspect, there is disclosed an apparatus for indexing a device about an indexing axis, the apparatus comprising an indexing drive mechanism comprising a drive portion configured in driving engagement with a driven member for indexing the device about the indexing axis. The driven member is arranged in operable association with an assembly comprising at least one resilient element arranged so as to be capable of transitioning to/from a state of bias such that exposure of the device to any undesirable physical forces is reduced to at least some extent.

IPC Classes  ?

• 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 47/02 - Determining slope or direction

Abstract

A spear head assembly includes a spear point having a proximal end and an opposite pointed end. A sleeve has an axial passage and a first end from which the spear point extends, the spear point coupled to the sleeve wherein the spear point can pivot relative to the sleeve and move axially relative to the sleeve. The first end of the sleeve has a smooth continuous abutment surface for the spear point, and the abutment surface forms a funnel like structure which reduces in inner diameter in a direction inward of the sleeve, with the funnel like structure extending between an outer circumferential surface and an inner circumferential surface of the sleeve.

IPC Classes  ?

• E21B 31/20 - Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
• E21B 25/02 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
• 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

Abstract

A navigation device for surveying and directing a borehole comprises: a first gyro including a first sensitive axis and a second sensitive axis; a second gyro including at least a third sensitive axis; and a driving unit configured to orient the second gyro in a first mode in a first position in which an earth acceleration dependent error on the second gyro is insignificant and to orient the second gyro in a second mode in a second position in which the third sensitive axis is perpendicular to the first sensitive axis and perpendicular to the second sensitive axis.

IPC Classes  ?

• E21B 47/02 - Determining slope or direction
• E21B 47/022 - Determining slope or direction of the borehole, e.g. using geomagnetism
• E21B 47/09 - Locating or determining the position of objects in boreholes or wellsIdentifying the free or blocked portions of pipes
• G01C 19/02 - Rotary gyroscopes

Goods & Services

Surveying apparatus and instruments; Scientific apparatus and instruments; Measuring apparatus and instruments; Weighing apparatus and instruments; probes for scientific purposes; geophysical probes; geophysical research apparatus; apparatus for borehole measurement, including measurement in relation to azimuth, inclination, magnetic tool face angle, gravity roll angle, magnetic field strength, temperature and dip; inclination and orientation borehole measuring instruments; surveying probes for positioning boreholes; surveying gauges for positioning boreholes; surveying instruments for positioning boreholes; parts and accessories for the aforementioned; none of the aforesaid being electronic displays or components therefor. Installation services; repair services; installation services relating to surveying apparatus, instruments and equipment and parts and accessories therefore; repair services relating to surveying apparatus, instruments and equipment and parts and accessories therefore; installation services relating to scientific apparatus, instruments and equipment and parts and accessories therefore; repair services relating to scientific apparatus, instruments and equipment and parts and accessories therefore; installation services relating to measuring apparatus, instruments and equipment and parts and accessories therefore; repair services relating to measuring apparatus, instruments and equipment and parts and accessories therefore; installation services relating to weighing apparatus, instruments and equipment and parts and accessories therefore; repair services relating to weighing apparatus, instruments and equipment and parts and accessories therefore; installation, service and repair services relating to borehole surveying instruments; installation, service and repair services relating to borehole measurement instruments; installation, service and repair services relating to instruments which measure azimuth, inclination, magnetic tool face angle, gravity roll angle, magnetic field strength, temperature, orientation or dip; installation, service and repair services relating to core orientation tools; none of the aforesaid services relating to or provided in the field of electronic displays or components therefor. Scientific and technological services and research and design relating thereto; industrial analysis and research services; surveying services; geophysical survey services; geophysical research services; geophysical exploration services; analysis and research services; rental of surveying apparatus and instruments; rental of scientific apparatus and instruments; rental of measuring apparatus and instruments; rental of weighing apparatus and instruments; rental of probes for scientific purposes; rental of geophysical probes; rental of testing probes; rental of geophysical research apparatus; rental of apparatus for carrying out assays; rental of bioassay apparatus; rental of apparatus for remote surveying; rental of borehole surveying instruments; rental of apparatus for borehole measurement, rental of instruments for measuring azimuth, inclination, magnetic tool face angle, gravity roll angle, magnetic field strength, temperature, orientation or dip; rental of inclination and orientation borehole measuring instruments; rental of core orientation tools; rental of computer software; rental of computer software for the processing of borehole survey data; rental of parts and accessories for the aforementioned apparatus and instruments; service and repair of computer software for the processing of borehole survey data; service and repair of computer software for the processing of borehole survey data; design and development of computer software; cloud based storage, access and analysis of data; data security services; calibration of surveying, scientific, measuring and weighing apparatus and instruments; calibration of surveying, scientific, measuring and weighing instruments; borehole surveying and core orientation tools; none of the aforesaid services relating to or provided in the field of electronic displays or components therefor.

Abstract

A down hole surveying tool (10) is for directional surveying of boreholes. The tool (10) includes a body (11) which accommodates a two-axis gyroscope (13) and a two-axis accelerometer (15). The gyroscope (13) and accelerometer (15) are rigidly fixed with respect to each other to provide a composite sensor device (17). The sensor device (17) is supported in a rotary mount (31) for rotation about an indexing axis (4). The sensor device (17) can be indexed about the indexing axis between two indexing positions which are 180 degrees apart. An indexing mechanism (70) is provided for selectively indexing the sensor device (17) about the indexing axis (4). The indexing mechanism (70) includes a drive portion (71) and a driven portion (72) adapted for selective interaction to impart indexing motion to the sensor device (17). The driven portion (72) is movable into and out of engagement with the drive portion (71) upon rotation of the rotary mount (31) about a pitch axis (1) using a pitch drive mechanism (51).

IPC Classes  ?

• E21B 47/022 - Determining slope or direction of the borehole, e.g. using geomagnetism
• E21B 47/00 - Survey of boreholes or wells
• G01C 19/34 - Rotary gyroscopes for indicating a direction in the horizontal plane, e.g. directional gyroscopes
• G01C 19/40 - Rotary gyroscopes for control by signals from a master compass, i.e. repeater compasses
• G01C 19/04 - Rotary gyroscopes Details
• B23Q 16/12 - Indexing equipment using optics
• E21B 47/02 - Determining slope or direction

Abstract

An overshot (10) comprises a latching mechanism (12) for latching a member such as a spear point (14); and, an actuator (16) which actuates the latching mechanism (12). The latching mechanism (12) has a number of different operational states. One of these is a neutral state in which latching mechanism (12) is able to latch or capture a spear point (14). In the neutral state, latching mechanism (12) is able to open in order to receive spear point (14) and then self- close to latch or retain the spear point (14). Latching mechanism (12) also has a locked state in which it is locked in a closed position by actuator (16) to prevent the release of a latched spear point (14). The third state is the release state where the overshot is locked in an open position by actuator (16) to release a previously latched spear point (14). The actuator (16) operates as a linear to rotary motion converter which converts linear motion of one part of the actuator to a rotary motion of another part of the actuator between a plurality of rotationally spaced positions. The rotational positions determine the state of the latching mechanism.

IPC Classes  ?

• E21B 31/18 - Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot

Abstract

A latching system has a latch body, a latch carrier and two latch dogs. The latch dogs are retained in the latch carrier by two pins. The latch carrier is located within the latch body. The latch body has slots through which the latch dogs can extend. The pins pass through both latch dogs and through longitudinal slots in the latch carrier. The pins are fixed at their opposite ends to the latch body. When the latch carrier is moved axially the latch dogs move parallel to each other between: a latching position where the latch dogs extend from the latch body and latch carrier and can engage a latching mechanism; and a release position where the latch dogs retract inwardly.

IPC Classes  ?

• E21B 25/02 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe

Abstract

A housing (15) for connection to a downhole assembly (17), the housing comprising first and second sections (31, 32), the first section (31) being adapted for connection to a portion of the downhole assembly, the second section (32) defining a compartment (23) to receive a downhole tool (11) or component thereof, the second section (32) being configured to provide a path (40) for fluid flow past the compartment (23) as the assembly descends within the borehole, and the first section (31) being configured for fluid communication between a passage in said portion of the downhole assembly and the fluid flow path (40).

IPC Classes  ?

• E21B 17/18 - Pipes provided with plural fluid passages
• E21B 25/00 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
• 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 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores

Abstract

A down hole surveying tool (10) for directional surveying of boreholes. The tool (10) comprises a body (11) which accommodates a two-axis gyroscope (13) and a two-axis accelerometer (15). The gyroscope (13) and accelerometer (15) are rigidly fixed with respect to each other to provide a composite sensor device (17). The sensor device (17) is supported in a rotary mount (31) for rotation about an indexing axis (4). The sensor device (17) can be indexed about the indexing axis between two indexing positions which are 180 degrees apart. An indexing mechanism (70) is provided for selectively indexing the sensor device (17) about the indexing axis (4). The indexing mechanism (70) comprises a drive portion (71) and a driven portion (72) adapted for selective interaction to impart indexing motion to the sensor device (17). The driven portion (72) is movable into and out of engagement with the drive portion (71) upon rotation of the rotary mount (31) about a pitch axis (1) using a pitch drive mechanism (51).

IPC Classes  ?

• G01C 19/04 - Rotary gyroscopes Details
• E21B 47/024 - Determining slope or direction of devices in the borehole

Abstract

A core orientation head (12) comprises a substantially cylindrical body (28) having a first end (30) and an opposite end (34). A core face profile recording system (41) is carried by the body (28) to record a profile of the face of a core cut by a core drill in which the orientation head (12) is disposed. The system (41) comprises a plurality of pins (42) housed with an interference fit inside respective axially extending holes (38) provided in the body (28). A bearing scale (48) is marked on an outer circumferential surface 50 of the body (28). A cap (74) is demountably connectable to either of the ends (30) and (34). When connected to the end (30), the caps (74) protects the system (41). The caps (74) is also provided with a vernier scale (110) which, when the cap (74) is connected to the end (34), co-operates with the bearing scale (48) to facilitate marking of the core sample (46).

IPC Classes  ?

• E21B 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores

Abstract

A head assembly (10) comprises a spear head assembly (12) and a latching system (100) which are coupled together. The spearhead assembly (12) comprises a spear point (16) having a proximal end (18) pivotally coupled about a pivot axis (20) and a sleeve (22) that is biased in a direction toward a pointed end (24) of the spear point (16). The sleeve (22) is coupled with the spear point (16) so that the spear point (16) and the pivot axis (20) can move axially relative to the sleeve (22). The latching system (100) comprises a latch body (102) and two latch dogs (104a) and (104b) which are coupled to the latch body (102) and movable between latching position where the latch dog (16) from the latch body (102) and can engage a latching mechanism and a release position where the latch dogs (104) retract inwardly. The latching system (100) is configured to enable the latch dogs (104) to move parallel to each other rather than pivot when moving between the latch and release positions. The spear head assembly (12) enables the head assembly (10) to be coupled to an overshot to enable tripping through a drill string. The latching system (100) enables the head assembly (10) to selectively engage the latching mechanism inside the drill string to hold the head assembly (10) in at least one axial direction relative to the drill string.

IPC Classes  ?

• 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 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
• E21B 25/02 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
• E21B 31/20 - Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears

Abstract

A centralising core orientation apparatus (10) comprises a core orientation system (12) with a centralising system (14). The centralising system (14) comprises two centralising tools (14ad) and (14au) one on either side of the core orientation system (12). Each tool (14a) is capable of axial self centralisation within a conduit to thereby centralise the core orientation system (12). Each centralising tool (14a) is provided with links (34) that are biased to expand radially outwards to contact an inside surface of a conduit. A locking system (30) in each tool (14a) operates to selectively lock the links (34) in a retracted position and releases the links to be biased by a spring (56) to the expanded position.

IPC Classes  ?

• E21B 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
• E21B 17/10 - Wear protectorsCentralising devices
• E21B 25/00 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors

Abstract

A housing (15) for connection to a downhole assembly (17), the housing comprising first and second sections (31, 32), the first section (31) being adapted for connection to a portion of the downhole assembly, the second section (32) defining a compartment (23) to receive a downhole tool (11) or component thereof, the second section (32) being configured to provide a path (40) for fluid flow past the compartment (23) as the assembly descends within the borehole, and the first section (31) being configured for fluid communication between a passage in said portion of the downhole assembly and the fluid flow path (40).

IPC Classes  ?

• E21B 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
• 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 3/18 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging

Goods & Services

(1) Borehole surveying instruments; instruments for measuring the characteristic of boreholes, namely, measurement in relation to curvature, orientation, azimuth, inclination, magnetic tool face angle, gravity, roll angle, magnetic field strength, magnetic dip and time measurements; instruments for measuring borehole temperature; tools for measuring characteristics of cores, namely, measurement in relation to core orientation, azimuth and inclination; parts and fittings for the aforementioned.

Abstract

A core orientation head (12) comprises a substantially cylindrical body (28) having a first end (30) and an opposite end (34). A core face profile recording system (41) is carried by the body (28) to record a profile of the face of a core cut by a core drill in which the orientation head (12) is disposed. The system (41) comprises a plurality of pins (42) housed with an interference fit inside respective axially extending holes (38) provided in the body (28). A bearing scale (48) is marked on an outer circumferential surface 50 of the body (28). A cap (74) is demountably connectable to either of the ends (30) and (34). When connected to the end (30), the caps (74) protects the system (41). The caps (74) is also provided with a vernier scale (110) which, when the cap (74) is connected to the end (34), co-operates with the bearing scale (48) to facilitate marking of the core sample (46).

IPC Classes  ?

• E21B 25/16 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
• E21B 25/00 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors

Goods & Services

Instruments for measuring the curvature of boreholes.

Goods & Services

(1) Borehole surveying instruments.

Goods & Services

(1) Borehole surveying instruments.

Goods & Services

(1) Borehole surveying instruments.