A downhole tubing cutter tool (1) for running into a downhole tubular in a wellbore (70) and separating an upper portion of the downhole tubular from a lower portion of the downhole tubular, the downhole tubing cutter tool (1) comprising: - an inner tool portion (30); - an outer sleeve (20) telescopically coupled around the inner tool portion (30); and - at least one cutting arm (40) pivotably connected to the inner tool portion (30) and moveable between a retracted position (401) and an operational position (405); wherein the outer sleeve (20) is configured to be telescoped in use in an uphole direction (X1) to pivot the at least one cutting arm (40) from the retracted position (401) to the operational position (405) through an outer sleeve opening (21) in the outer sleeve (20).
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
E21B 10/34 - Drill bits with leading portion, i.e. drill bits with a pilot cutterDrill bits for enlarging the borehole, e.g. reamers with expansible cutting tools of roller-cutter type
E21B 23/01 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
E21B 10/32 - Drill bits with leading portion, i.e. drill bits with a pilot cutterDrill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
2.
System and method for permanent plugging of a petroleum well
A valve for a landing packer in a petroleum well. The landing packer is provided with a passage between an upper face and a lower face, and the valve is adapted to close the passage. The valve comprises a biased valve body adapted to be displaced between a first position and a second position. The valve body is adapted to receive a tool from above. The valve body is adapted to be displaced from a first position to a second position by a downward force executed by the tool. It is also described a tool comprising a leading end adapted to abut fluid tightly the biased valve body and the tool is adapted to displace the biased valve body between the first closed position and the second open position. It is also described a method for plugging the A-annulus in a petroleum well.
A system (7) for a downhole operation comprising a device (1) and a toolstring (24, 26) is described The device (1) is formed to be placed within a wellbore (9) and to guide a lower part (244) of the toolstring (24, 26) such that a free end portion (246) in the lower part (244) forms a guide angle (1265) with a longitudinal axis (128) of the device (1). The de- vice (1) enables a hole (100) to be drilled into a formation (95) surrounding the wellbore (9) and subsequent re-entries into the hole (100).
An orientation device (6) for orientating a tool (7) within a wellbore, wherein:
the orientation device (6) forms a central longitudinal axis (162) from a first orientation device end (122) to a second orientation device end (142);
the orientation device (6) comprises at least one orientation member (62) displaceable between a retracted position and an extended position, the extended position has a lateral displacement compared to the retracted position; and
the orientation member (62) comprises a distal end portion (63) where the distal end portion (63) is formed to be displaceable along a curve of an internal wall (924) of the wellbore.
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 23/04 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
E21B 47/024 - Determining slope or direction of devices in the borehole
5.
Method of preparing a first combined digital signal to be transmitted along a wireline deployed in a well, and method of preparing and transmitting telemetry data along a wireline deployed in a well
Disclosed is a method of preparing a first combined digital signal to be transmitted along a wireline deployed in a well. The first combined digital signal is for controlling a wireline conveying system and a measurement tool. The method includes converting a first telemetry signal to form a digitized telemetry signal, the first telemetry signal comprising control data for measurement tool; providing a control data for controlling the wireline conveying system; and transferring the digitized telemetry signal and the control data to a unit for processing data, the unit forming the first combined digital signal by multiplexing the transferred signal and data. Also disclosed is a method of preparing and transmitting telemetry data along a wireline, the method includes the previous steps and further: modulating the first combined digital signal to form a modulated signal; and transmitting the modulated signal from one end of the wireline to another.
E21B 47/13 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range
6.
TOOLSTRING FOR SETTING A TUBULAR EQUIPMENT IN A WELL TUBING AND METHOD FOR SETTING THE TUBULAR EQUIPMENT
A tool string (1) comprising an engaging tool (6) configured to connect a tubular equip- ment (74) to the tool string (1), wherein: - the tool string (1) comprises in sequence from a first end (12) towards a second end (14) the engaging tool (6), a tractor (3) and a gripping tool (5); - the first end (12) is positioned uphole compared to the second end (14); and - the engaging tool (6) is configured to connect to the tubular equipment (74) in an up- hole end of the tubular equipment (74) Methods for using the tool string (1) are de- scribed as well.
E21B 23/01 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
E21B 23/03 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting the tools into, or removing the tools from, laterally offset landing nipples or pockets
E21B 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
METHOD OF PREPARING A FIRST COMBINED DIGITAL SIGNAL TO BE TRANSMITTED ALONG A WIRELINE DEPLOYED IN A WELL, AND METHOD OF PREPARING AND TRANSMITTING TELEMETRY DATA ALONG A WIRELINE DEPLOYED IN A WELL
Disclosed is a method of preparing a first combined digital signal to be transmitted along a wireline deployed in a well. The first combined digital signal is for controlling a wireline conveying system and a measurement tool. The method comprises: converting a first telemetry signal to form a digitized telemetry signal, the first telemetry signal comprising control data for measurement tool; providing a control data for controlling the wireline conveying system; and transferring the digitized telemetry signal and the control data to a unit for processing data, the unit forming the first combined digital signal by multiplexing the transferred signal and data. Also disclosed is a method of preparing and transmitting telemetry data along a wireline, the method comprising the previous steps and further: modulating the first combined digital signal to form a modulated signal; and transmitting the modulated signal from one end of the wireline to another.
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
G08C 15/00 - Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path
G01V 1/22 - Transmitting seismic signals to recording or processing apparatus
H04B 1/00 - Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission
8.
System and method for permanent plugging of a petroleum well
A valve for a landing packer in a petroleum well. The landing packer is provided with a passage between an upper face and a lower face, and the valve is adapted to close the passage. The valve comprises a biased valve body adapted to be displaced between a first position and a second position. The valve body is adapted to receive a tool from above. The valve body is adapted to be displaced from a first position to a second position by a downward force executed by the tool. It is also described a tool comprising a leading end adapted to abut fluid tightly the biased valve body and the tool is adapted to displace the biased valve body between the first closed position and the second open position. It is also described a method for plugging the A-annulus in a petroleum well.
A valve for a landing packer in a petroleum well. The landing packer is provided with a passage between an upper face and a lower face, and the valve is adapted to close the passage. The valve comprises a biased valve body adapted to be displaced between a first position and a second position. The valve body is adapted to receive a tool from above. The valve body is adapted to be displaced from a first position to a second position by a downward force executed by the tool. It is also described a tool comprising a leading end adapted to abut fluid tightly the biased valve body and the tool is adapted to displace the biased valve body between the first closed position and the second open position. It is also described a method for plugging the A-annulus in a petroleum well.
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 34/06 - Valve arrangements for boreholes or wells in wells
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
A drilling assembly comprises a drill bit and a cutting assembly. The drilling assembly forms a longitudinal center axis. The drill bit and cutting assembly fastened to a rotatable spline drive assembly. The cutting assembly resiliently displaceable to the drill bit along the center axis such that in a first position the drill bit is surrounded by the cutting assembly, and in a second position a free end portion of the drill bit is projecting beyond the cutting assembly along the center axis. The cutting assembly comprises an endmill. The endmill comprises a central through hole complementary to the outer diameter of the drill bit. A method for cutting swarfs created by drilling, with an endmill, is described.
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
11.
Drilling assembly for removal of an obstacle in a conduit
A drilling assembly for making a passage in an object within a petroleum well. The drilling assembly comprises a drill bit assembly, a cutting assembly, and both assemblies are fastened to a rotatable drive assembly. The drill bit assembly comprises a drill bit. The cutting assembly comprises a hole saw assembly. The cutting assembly is resiliently displaceable to the drill bit assembly. The drilling assembly comprises a displaceable membrane within the tubular body. The membrane divides an interior of the tubular body in a receiving compartment and an inner compartment.
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
E21B 4/00 - Drives for drilling, used in the borehole
E21B 31/00 - Fishing for or freeing objects in boreholes or wells
E21B 10/26 - Drill bits with leading portion, i.e. drill bits with a pilot cutterDrill bits for enlarging the borehole, e.g. reamers
12.
Dump bailer and lubricator assembly for filling the dump bailer
A dump bailer for being filled with a flowable material in a lubricator assembly and for depositing the flowable material in a wellbore, wherein the dump comprises a filling valve for filling flowable material into the dump bailer and a means for orientation of the dump bailer along a longitudinal axis. The invention also relates to a lubricator assembly configured to allow filling a flowable material into a dump bailer positioned within the lubricator assembly, wherein the lubricator assembly comprises an inlet for injection of flowable material and a guide for providing the dump bailer with a correct position and orientation. The invention further relates to a method for filling a flowable material into a dump bailer positioned within a lubricator assembly and for depositing the flowable material in a wellbore.
A downhole apparatus including a sleeve, a tool string, a plug, a means for setting the plug wherein an upper portion of the sleeve is connectable to a lower portion of the tool string, and a lower portion of the sleeve is arranged to receive the plug and the means for setting the plug. A method for using the downhole apparatus (1) is disclosed.
E21B 23/06 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting packers
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
A tool string arrangement (1) for displacement in a deviating wellbore (9) by a wireline operated tractor (2), said tool string arrangement (1) comprises a clean-out arrangement (4), the clean-out arrangement (4) comprises a rotational motor (40) provided with electrical energy through a wireline (21). The tool string arrangement (1) comprises a perforation arrangement (3) positioned between the wireline operated tractor (2) and the rotational motor (40). A method for using the tool string arrangement (1) is described.
A tool string arrangement (1) for displacement in a deviating wellbore (9) by a wireline operated tractor (2), said tool string arrangement (1) comprises a clean-out arrangement (4), the clean-out arrangement (4) comprises a rotational motor (40) provided with elec-trical energy through a wireline (21). The tool string arrangement (1) comprises a perfora-tion arrangement (3) positioned between the wireline operated tractor (2) and the rota-tional motor (40). A method for using the tool string arrangement (1) is described.
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 37/00 - Methods or apparatus for cleaning boreholes or wells
A drilling assembly (1) for making a passage in an object (2) within a petroleum well (8). The drilling assembly (1) comprises a drill bit assembly (3), a cutting assembly (4), andboth assemblies (3, 4) are fastened to a rotatable drive assembly (5),- the drill bit assembly (3) comprises a drill bit (31);- the cutting assembly (4) comprises a hole saw assembly (42);- the cutting assembly (4) is resiliently displaceable to the drill bit assembly (3). The drilling assembly (1) comprises a displaceable membrane (6) within the tubular body(41). The membrane (6) divides an interior (43) of the tubular body (41) in a receiving compartment (69) and an inner compartment (60).
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
A wireline clean-out tool including a first opening and a second opening at or near a free-end portion. The first opening takes in debris from a wellbore, the second opening ejects fluid into the wellbore. A housing defines a first flow path from the first opening at the free-end portion to an opposite end portion of the housing and a second flow path from the opposite end portion to the second opening at the free-end portion. The flow paths couple with each other at the opposite end portion. A collection chamber is in the first flow path for collecting debris during operation. A progressive cavity pump with hollow rotors is placed inside the housing at a predefined distance from the free-end portion being configured for operating on the first flow path while the hollow rotor forms part of the second flow path.
E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
B01D 29/64 - Regenerating the filter material in the filter by scrapers, brushes or the like, acting on the cake side of the filtering element
B08B 9/045 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes the cleaning devices being rotated while moved
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
E21B 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
A circulation unit for connecting to a lubricator suitable for housing a wireline operated tool string for collecting debris within a petroleum well. The circulation unit comprises a house with an upper lubricator connection and at least one lower internal seal member adapted to seal against an outer surface of the tool string. The circulation unit has an outlet above the seal member, the outlet being connected to a reservoir. The circulation unit has a lower lubricator connection. The house, upper lubricator connection and lower lubricator connection form a through passage for the tool string. The upper lubrication connection and lower lubrication connection are adapted for connection to a pressurized lubricator. The tool string includes a wellbore cleanout tool with filling means. The wellbore cleanout tool comprises an outlet for unloading collected debris in a lubricator assembly comprising the lubricator and the circulation unit.
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
E21B 33/072 - Well headsSetting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells for cable-operated tools
E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
A drilling assembly comprises a drill bit and a cutting assembly. The drilling assembly forms a longitudinal center axis. The drill bit and cutting assembly fastened to a rotatable spline drive assembly. The cutting assembly being resiliently displaceable to the drill bit along the center axis such that in a first position the drill bit is surrounded by the cutting assembly and in a second position a free end portion of the drill bit projects beyond the cutting assembly along the center axis. The cutting assembly comprises an endmill which comprises a central through hole which is complementary to the outer diameter of the drill bit. A method for cutting swarfs created by drilling with the endmill is described.
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
20.
Device for hydraulically operating a drive wheel of a wellbore tractor, e.g. a motor, and related tractor, wellbore string, and method
A device for hydraulically operating a drive wheel of a wellbore tractor has, in certain embodiments, at least one cam and a rotatable assembly arranged to be rotatable with respect to the cam about an axis of rotation. The rotatable assembly has at least one piston. The device also has a chamber and at least one supply port for supplying hydraulic fluid from the chamber to the piston for energizing the piston, the supply port being arranged to be moved between first and second positions relative to the cam. In the first position, the piston can connect to the supply port and be energized to impart force against the cam for producing forward rotation of the assembly. In the second position, the piston can connect to the supply port and be energized to impart force against the cam for producing reverse rotation of the assembly. Related distributor assembly, wellbore tractor, and method are also described.
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/063 - Control by using a valve in a system with several pumping chambers wherein the flow-path through the chambers can be changed, e.g. between series and parallel flow
F04B 1/1071 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
A downhole apparatus comprises a sleeve, a tool string, a plug, a means for setting the plug wherein an upper portion of the sleeve is connectable to a lower portion of the tool string, and a lower portion of the sleeve is arranged to receive the plug and the means for setting the plug. A method of using the downhole apparatus is disclosed.
E21B 23/06 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting packers
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
The invention relates to a dump bailer (1) for being filled with a flowable material in a lubricator assembly (51) and for depositing the flowable material in a wellbore, wherein the dump comprises a filling valve (17) for filling flowable material into the dump bailer (1) and a means for orientation of the dump bailer (1) along a longitudinal axis. The invention also relates to a lubricator assembly (51) configured to allow filling a flowable material into a dump bailer (1) positioned within the lubricator assembly (51), wherein the lubricator assembly (51) comprises an inlet (71) for injection of flowable material and a guide (67) for providing the dump bailer (1) with a correct position and orientation. The invention further relates to a method for filling a flowable material into a dump bailer (1) positioned within a lubricator assembly (51) and for depositing the flowable material in a wellbore.
The invention relates to a dump bailer (1) for being filled with a flowable material in a lubricator assembly (51) and for depositing the flowable material in a wellbore, wherein the dump comprises a filling valve (17) for filling flowable material into the dump bailer (1) and a means for orientation of the dump bailer (1) along a longitudinal axis. The invention also relates to a lubricator assembly (51) configured to allow filling a flowable material into a dump bailer (1) positioned within the lubricator assembly (51), wherein the lubricator assembly (51) comprises an inlet (71) for injection of flowable material and a guide (67) for providing the dump bailer (1) with a correct position and orientation. The invention further relates to a method for filling a flowable material into a dump bailer (1) positioned within a lubricator assembly (51) and for depositing the flowable material in a wellbore.
The invention relates to a wireline clean-out tool for collecting debris in a wellbore. The tool comprises: i) a first opening and a second opening provided at or near a free-end portion of the tool, wherein the first opening is for taking in said debris , and the second opening is for ejecting fluid ; ii) a housing defining a first flow path and a second flow path, wherein said flow paths are coupled with each other at an opposite end portion; iii) a collection chamber provided in the first flow path , and iv) a progressive cavity pump having a hollow rotor placed inside the housing and being configured for operating on the first flow path, the hollow rotor forming part of the second flow path.
E21B 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
The invention relates to a wireline clean-out tool (1) for collecting debris (99) in a wellbore (100). The wireline clean-out tool (1) comprises: i) a first opening (3) and a second open-ing (5) being provided at or near a free-end portion (1e) of the wireline clean-out tool (1), wherein the first opening (3) is for taking in said debris (99) from the wellbore (100), and the second opening (5) is for ejecting fluid (10) into the wellbore (100); ii) a housing (20) defining a first flow path (21) running from the first opening (3) at the free-end portion (1e) to an opposite end portion (2e) of the housing (20), and a second flow path (23) running from the opposite end portion (2e) to the second opening (5) at the free-end portion (1e), wherein said flow paths (21, 23) are coupled with each other at the opposite end portion (2e); iii) a collection chamber (25) provided in the first flow path (21) for collecting said debris (99) during operational use of the wireline clean-out tool (1), and iv) a progressive cavity pump (30, 30-1) having a hollow rotor (35), wherein the progressive cavity pump (30) is placed inside the housing (20) at a predefined distance (d1) from the free-end portion (1e) being configured for operating on the first flow path (21) while the hollow rotor (35) forms part of the second flow path (23). The invention provides for a very effective tool for cleaning well-bores. The tool has a large capacity, suffers much less from clogging and provides for convenient emptying of the tool.
E21B 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
A downhole tool string forming a free end portion for performing an operation in a well having a well fluid, the string comprising towards the free end portion; a motor for delivering a rotational speed, a pump connected the motor for circulating the well fluid through a first port and a second port, a gear housing comprising a gear being driven by the pump and delivering a reduced rotational speed, a tool shaft rotatable by the gear at the reduced rotational speed; a reservoir around a section of the tool shaft for collecting dislodged material, and a material dislodging means connected to the tool shaft, wherein the gear housing further comprises a first fluid channel for providing fluid communication between the pump and the first port via the tool shaft being hollow, and a second fluid channel for providing fluid communication between the pump and second port via the reservoir.
E21B 21/12 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using drilling pipes with plural fluid passages, e.g. closed circulation systems
E21B 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
E21B 21/08 - Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
E21B 7/18 - Drilling by liquid or gas jets, with or without entrained pellets
E21B 10/18 - Roller bits characterised by conduits or nozzles for drilling fluids
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
27.
Downhole tractor comprising an improved hydraulic system
A downhole tractor having a hydraulic system for driving a plurality of hydraulic cylinders and a plurality of hydraulic motors. The system comprises: a hydraulic power pack; a first hydraulic supply line for supplying hydraulic fluid to the plurality of hydraulic cylinders; a second hydraulic supply line for supplying hydraulic fluid to plurality of hydraulic motors; a valve section comprising a respective part of first hydraulic supply line and a further respective part of second hydraulic supply line, valve section further comprising an inlet for receiving hydraulic fluid, and a set of valves, and a hydraulic bypass supply line coupled to hydraulic power pack for supplying hydraulic fluid directly to the inlet of valve section bypassing at least part of first hydraulic supply line and second hydraulic supply line. The first and the second hydraulic supply line each comprise two parts connected via respective part in the valve section. Each respective part is connected to a respective sub-set of plurality of hydraulic components. The valve section configured for individually controlling flow of hydraulic fluid into each respective part of hydraulic supply lines.
F15B 11/20 - Servomotor systems without provision for follow-up action with two or more servomotors controlling several interacting or sequentially-operating members
F15B 11/16 - Servomotor systems without provision for follow-up action with two or more servomotors
F15B 11/17 - Servomotor systems without provision for follow-up action with two or more servomotors using two or more pumps
F15B 15/18 - Combined units comprising both motor and pump
A drilling assembly(1), comprising a drill bit (5) and a cutting assembly (2), - said drilling assembly (1) forming a longitudinal center axis (9); - said drill bit (5) and cutting assembly (2) being fastened to a rotatable spline drive assembly (3); - said cutting assembly (2) being resiliently displaceable to the drill bit (5) along the center axis (9) such that in a first position the drill bit (5) is surrounded by the cutting assembly (2), and in a second position a free end portion (52) of the drill bit (5) is projecting beyond the cutting assembly (2) along the center axis (9). The cutting as-sembly (2) comprises an endmill (28), said endmill (28) comprises a central through hole (26) which is complementary to the outer diameter of the drill bit (5). A method for cutting swarfs created by drilling, with an endmill (28), is described.
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 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
E21B 31/00 - Fishing for or freeing objects in boreholes or wells
A drilling assembly(1), comprising a drill bit (5) and a cutting assembly (2), - said drilling assembly (1) forming a longitudinal center axis (9); - said drill bit (5) and cutting assembly (2) being fastened to a rotatable spline drive assembly (3); - said cutting assembly (2) being resiliently displaceable to the drill bit (5) along the center axis (9) such that in a first position the drill bit (5) is surrounded by the cutting assembly (2), and in a second position a free end portion (52) of the drill bit (5) is projecting beyond the cutting assembly (2) along the center axis (9). The cutting as-sembly (2) comprises an endmill (28), said endmill (28) comprises a central through hole (26) which is complementary to the outer diameter of the drill bit (5). A method for cutting swarfs created by drilling, with an endmill (28), is described.
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 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
E21B 31/00 - Fishing for or freeing objects in boreholes or wells
30.
DEVICE FOR EMPTYING A WIRELINE OPERATED WELLBORE DEBRIS CLEAN OUT TOOL AND A METHOD FOR USING THE DEVICE
Circulation unit (2) for connecting to a lubricator (160), said lubricator (160) is suitable for housing a wireline operated tool string (200) for collecting debris within a petroleum well, said circulation unit (2) comprises a house (29) provided with an upper lubricator connection (165) and with at least one lower internal seal member (23), said seal member (23) is adapted to seal against an outer surface of the tool string (200), and the circulation unit (2) is provided with an outlet (30) above the seal member (23), said outlet (30) being connected to a reservoir (3; 300). The circulation unit (2) is provided with a lower lubricator connection (166);the house (29), the upper lubricator connection (165) and the lower lubricator connection (166) form a through passage for the tool string (200); and the upper lubrication connection (165) and the lower lubrication connection (166) are adapted for connection to a pressurized lubricator (160). The tool string (200) comprises a wellbore clean out tool (230) provided with filling means and said wellbore clean out tool (230) comprises an outlet (4) for unload-ing collected debris in a lubricator assembly (16) comprising the lubricator (160) and the circulation unit (2). A method for unloading the filled wellbore clean out tool (230) in the circulation unit (2) is described as well.
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
E21B 33/068 - Well headsSetting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells
E21B 33/072 - Well headsSetting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells for cable-operated tools
E21B 37/04 - Scrapers specially adapted therefor operated by fluid pressure, e.g. free-piston scrapers
31.
DEVICE FOR EMPTYING A WIRELINE OPERATED WELLBORE DEBRIS CLEAN OUT TOOL AND A METHOD FOR USING THE DEVICE
Circulation unit (2) for connecting to a lubricator (160), said lubricator (160) is suitable for housing a wireline operated tool string (200) for collecting debris within a petroleum well, said circulation unit (2) comprises a house (29) provided with an upper lubricator connection (165) and with at least one lower internal seal member (23), said seal member (23) is adapted to seal against an outer surface of the tool string (200), and the circulation unit (2) is provided with an outlet (30) above the seal member (23), said outlet (30) being connected to a reservoir (3; 300). The circulation unit (2) is provided with a lower lubricator connection (166);the house (29), the upper lubricator connection (165) and the lower lubricator connection (166) form a through passage for the tool string (200); and the upper lubrication connection (165) and the lower lubrication connection (166) are adapted for connection to a pressurized lubricator (160). The tool string (200) comprises a wellbore clean out tool (230) provided with filling means and said wellbore clean out tool (230) comprises an outlet (4) for unload-ing collected debris in a lubricator assembly (16) comprising the lubricator (160) and the circulation unit (2). A method for unloading the filled wellbore clean out tool (230) in the circulation unit (2) is described as well.
E21B 33/068 - Well headsSetting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells
E21B 33/072 - Well headsSetting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells for cable-operated tools
E21B 37/04 - Scrapers specially adapted therefor operated by fluid pressure, e.g. free-piston scrapers
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
32.
Downhole expansion tool and method for use of the tool
An expansion tool and method for expanding a tubing is disclosed. The expansion tool includes a rear portion, an opposite leading end and an expansion piston within the expansion tool. The expansion piston includes an expansion cone and radially movable expansion elements forming a circumferential expansion body. The rear portion is adapted for engaging a power source positioned at the rear portion. The expansion tool further includes a plurality of expansion arms surrounding the expansion piston. Each expansion arm is on an outer side provided with an expansion element, and a wedge portion between the expansion element and the expansion cone. The wedge portion abuts the expansion cone.
A device for hydraulically operating a drive wheel of a wellbore tractor has in certain embodiments at least one cam, and a rotatable assembly arranged to be rotatable with respect to the cam about an axis of rotation. The rotatable assembly has at least one piston. The device also has a chamber and at least one supply port for supplying hydraulic fluid from the chamber to the piston for energizing the piston, the supply port being arranged to be moved between first and second positions relative to the cam. In the first position, the piston can connect to the supply port and be energized to impart force against the cam for producing forward rotation of the assembly. In the second position, the piston can connect to the supply port and be energized to impart force against the cam for producing reverse rotation of the assembly. Embodiments of a related distributor assembly, wellbore tractor, and method are also described.
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
34.
DEVICE FOR HYDRAULICALLY OPERATING A DRIVE WHEEL OF A WELLBORE TRACTOR, E.G. A MOTOR, AND RELATED TRACTOR, WELLBORE STRING, AND METHOD
A device for hydraulically operating a drive wheel of a wellbore tractor has in certain embodiments at least one cam, and a rotatable assembly arranged to be rotatable with respect to the cam about an axis of rotation. The rotatable assembly has at least one piston. The device also has a chamber and at least one supply port for supplying hydraulic fluid from the chamber to the piston for energizing the piston, the supply port being arranged to be moved between first and second positions relative to the cam. In the first position, the piston can connect to the supply port and be energized to impart force against the cam for producing forward rotation of the assembly. In the second position, the piston can connect to the supply port and be energized to impart force against the cam for producing reverse rotation of the assembly. Embodiments of a related distributor assembly, wellbore tractor, and method are also described.
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
35.
High tensile strength winder connection for downhole tools
A winder for a threaded connection of two axially aligned bodies where a first body comprises a male portion at an end connection portion and a second body has a female portion at an end connection portion. The female portion comprises a sleeve with a threaded portion on an internal face. The winder includes a winder ring encircling the male portion. The winder ring forms an internal surface and an external surface having a threaded portion. The internal surface of the winder ring includes a number of parallel grooves that are perpendicular to a rotational axis of the winder ring. A further male portion comprises external, circular grooves complementary to internal, circular ridges of the winder, and a threaded connection between two axially aligned bodies where the connection comprises the winder and the male portion.
A method of cleaning production tubing in a producing petroleum well comprising the steps: i) providing collection tool configured for both selectively collecting debris while residing downhole to obtain collected debris as well as selectively releasing collected debris while residing downhole; ii) lowering collection tool to specific location at certain depth into production tubing of the producing petroleum well where there is at least a partial choking of local production flow due to accumulated debris deposited on production tubing; iii) collecting accumulated debris with collection tool to obtain collected debris; iv) pulling collection tool to production zone of production tubing or downstream of production zone where there will be enough production flow during production to ensure lifting capacity for collected debris; and v) releasing collected debris into production zone of production tubing to obtain released debris being lifted by production flow when production is running. The invention leads to time and cost savings during cleaning of production tubing.
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
E21B 27/02 - Dump bailers, i.e. containers for depositing substances, e.g. cement or acids
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 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
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
37.
DOWNHOLE TOOL AND METHOD FOR DISPLACING A SLEEVE IN A WELLBORE
It is described a downhole tool (1) for displacing a slideable sleeve (50) under actuation of a stroker tool (100), the sleeve (50) being provided inside a casing string (501) in a wellbore (500), the casing string having openings (51), and wherein the sleeve (50) has a position relative to the casing (501) whereat it seals the openings (51), wherein the downhole tool (1) comprises: - a telescopic unit (2) comprising an inner telescopic element (21) and an outer telescopic element (22) that are moveable relative to each other over a predefined stroke (23), wherein a part of the stroke (23) has a significantly higher friction between the inner telescopic element (21) and the outer telescopic element (22) than a remainder of the stroke (23); - a tapered actuator (3) arranged at least partially within the inner telescopic element (21) and be-ing at least axially displaceable relative to the inner telescopic element (21), wherein the tapered actuator (3) is actuated by the stroker tool (100), in operational use; - a gripper device (4) mounted in a sidewall of the inner telescopic element (21) and being at least radially displaceable by axial displacement of the tapered actuator (3) relative to the inner telescopic element (21) for gripping the sleeve (50).
E21B 23/01 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
E21B 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
A collecting device for displacement in a tubing. The collecting device is extended in shape with a longitudinal axis and forms a leading portion with an entrance and an end portion. The device includes a wall extending from the leading portion to the end portion, a collecting chamber formed inside a portion of the wall, a filter positioned with the collecting chamber, a motor, a pump, and an outlet at the end portion, where the filter stocking provided with an open first end portion and a closed second end portion, and the open first end portion faces the leading portion, a and the filter stocking forms a receptacle. A method for emptying the collecting device is described.
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
E21B 10/42 - Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
39.
Downhole tractor comprising two or more hydrualic supply lines
A downhole tractor has at least one hydraulic drive section, comprising a first hydraulic supply line for actuating at least one hydraulic cylinder for actuating at least one tractor arm and a second hydraulic supply line for driving at least one hydraulic motor for rotating at least one tractor wheel. The downhole tractor further comprises a hydraulic power pack configured for supplying hydraulic fluid to the hydraulic supply lines. The hydraulic power pack comprises a pressure-setting valve provided in between the first hydraulic supply line and the second hydraulic supply line, wherein the pressure-setting valve is configured for feeding excess hydraulic fluid in the first hydraulic supply line to the second hydraulic supply line to increase the speed of the downhole tractor.
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
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
F15B 11/20 - Servomotor systems without provision for follow-up action with two or more servomotors controlling several interacting or sequentially-operating members
F15B 13/07 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors in distinct sequence
A receptacle is formed with a bottom end and a top end and houses an auger conveyor. The system includes at least one bottom sub comprising an inlet end and an outlet end. The outlet end is releasably connectable to a receptacle bottom end. At least one top assembly, comprising a house with an entrance releasably connectable to the receptacle top end and an outlet for connection to an outlet line, and a chamber within the house. The chamber forms a flow path between the entrance and the outlet. A retention tank is connected to the at least one top assembly outlet by the outlet line. A pump is connected to the retention tank on a pump suction side by a supply line, and the pump on the pressure side being connected to the at least one bottom sub by an inlet line.
E21B 41/00 - Equipment or details not covered by groups
B08B 9/032 - Cleaning the internal surfacesRemoval of blockages by the mechanical action of a moving fluid, e.g. by flushing
E21B 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
It is described a downhole tool string (1) forming a free end portion (101) for performing an operation in a well having a well fluid (10), the downhole tool string (1) comprising towards the free end portion (101): - a motor (6) for delivering a rotational speed; - a pump (5) connected to the motor (6) for circulating the well fluid (10) through a first port (21) and a second port (8); - a gear housing (400) comprising a gear (4), the gear (4) being driven by the pump (5) and delivering a reduced rotational speed; - a tool shaft (3) rotatable by the gear (4) at the reduced rotational speed; - a reservoir (71) around a section of the tool shaft (3) for collecting dislodged material, and - a material dislodging means (2) connected to the tool shaft (3), wherein the gear housing (400) further comprises a first fluid channel (410) for providing fluid communication between the pump (5) and the first port (21) via the tool shaft (3) being hollow, and a second fluid channel (440) for providing fluid communication between the pump (5) and second port (8) via the reservoir (71).
It is described a downhole tool string (1) forming a free end portion (101) for performing an operation in a well having a well fluid (10), the downhole tool string (1) comprising towards the free end portion (101): - a motor (6) for delivering a rotational speed; - a pump (5) connected to the motor (6) for circulating the well fluid (10) through a first port (21) and a second port (8); - a gear housing (400) comprising a gear (4), the gear (4) being driven by the pump (5) and delivering a reduced rotational speed; - a tool shaft (3) rotatable by the gear (4) at the reduced rotational speed; - a reservoir (71) around a section of the tool shaft (3) for collecting dislodged material, and - a material dislodging means (2) connected to the tool shaft (3), wherein the gear housing (400) further comprises a first fluid channel (410) for providing fluid communication between the pump (5) and the first port (21) via the tool shaft (3) being hollow, and a second fluid channel (440) for providing fluid communication between the pump (5) and second port (8) via the reservoir (71).
It is described a downhole apparatus (1), the downhole apparatus (1) comprising: - a sleeve (2) - a tool string (3) - a plug (4) - a means (41) for setting the plug (4) wherein an upper portion (210) of the sleeve (2) is connectable to a lower portion (310) of the tool string (3), and a lower portion (211) of the sleeve (2) is arranged to receive the plug (4) and the means (41) for setting the plug (4). A method for using the downhole apparatus (1) is described as well.
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
E21B 23/06 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting packers
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
The invention relates to an overvoltage protection circuit, particularly in system where the load is remote from a regulated power supply and relates to an electric power supply system comprising such overvoltage protection circuit. The invention further relates to a downhole tractor comprising such overvoltage protection circuit, and to a tethered subsea vehicle comprising the overvoltage protection circuit.
It is described a downhole apparatus (1), the downhole apparatus (1) comprising: - a sleeve (2) - a tool string (3) - a plug (4) - a means (41) for setting the plug (4) wherein an upper portion (210) of the sleeve (2) is connectable to a lower portion (310) of the tool string (3), and a lower portion (211) of the sleeve (2) is arranged to receive the plug (4) and the means (41) for setting the plug (4). A method for using the downhole apparatus (1) is described as well.
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
E21B 23/06 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting packers
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
The downhole tool comprises: (i) a housing connected with a collection chamber for receiving debris, the housing having an opening for collecting the debris from the petroleum well, the opening in fluid communication with the collection chamber through the housing; (ii) a rotatable shaft with transport blades arranged within the housing and extending from the opening to the collection chamber, the rotatable shaft configured for transporting debris from the opening to the collection chamber in operational use; (iii) an annular area defined between the rotatable shaft and an inner wall of the housing and (iv) a valve configured for keeping debris in the collection chamber. The valve is located within the housing between the opening and the collection chamber. The valve comprises a seal member with a movable part mounted in the annular area and around the rotatable shaft. The valve is opened when the movable part moves in direction of the collection chamber and is configured such that the movable part of the seal member is only movable in the direction towards the collection chamber when closed. The downhole tool provides a valve, which is easily opened, requiring a very small force, while providing a very good sealing effect when the seal member is closed.
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
E21B 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
E21B 34/06 - Valve arrangements for boreholes or wells in wells
E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
The downhole tractor further comprises a hydraulic power pack coupled to the hydraulic supply line, at least one hydraulic component and at least one further hydraulic component. The hydraulic components are coupled to the hydraulic supply line in parallel and configured for being actuated by the hydraulic supply line. The hydraulic supply line comprises a controllable valve placed at a location in between the at least one hydraulic component and the at least one further hydraulic component such that a first part of the hydraulic supply line is coupled to a second part of the hydraulic supply line via the controllable valve. The downhole tractor provides for much better control and facilitates tuning of the performance of the tractor to the actual needs.
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 23/04 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
The invention relates to a downhole tractor (10) comprising a hydraulic system (10s) for driving a plurality of hydraulic cylinders (160-1..160-4) and a plurality of hydraulic motors (170-1..170-4). The hydraulic system (10s) comprises: i) a hydraulic power pack (100a); ii) a first hydraulic supply line (200) for supplying hydraulic fluid to the plurality of hydraulic cylinders (160-1..160-4); iii) a second hydraulic supply line (300) for supplying the hydrau- lic fluid to the plurality of hydraulic motors (160-1..160-4); iv) a valve section (400) com- prising respective parts (200a, 300a) of said hydraulic supply line (200, 300), and an inlet (401) for receiving the hydraulic fluid, and a set of valves (V3..V6, PCV1, PCV2, 115, 116), and v) a hydraulic bypass supply line (250) coupled to the hydraulic power pack (100a) for supplying the hydraulic fluid directly to the inlet (401) of the valve section (400) bypassing at least part of the first hydraulic supply line (200) and the second hydraulic supply line (300). The first and the second hydraulic supply line(200, 300) comprises two parts (200-1, 200-2, 300-1, 300-2) that are connected via the valve section. Each respec- tive part (200-1, 200-2, 300-1, 300-2) is connected to a respective sub-set of the plurality of hydraulic components (160-1..160-4, 170-1..170-4). The valve section (400) is config- ured for individually controlling flow of the hydraulic fluid into each respective part (200-1, 200-2, 300-1, 300-2) of the hydraulic supply lines (200, 300). The downhole tractor in ac- cordance with the invention enables a much higher level of control than the downhole tractors of the prior art.
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
E21B 23/04 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
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
49.
HIGH TENSILE STRENGTH WINDER CONNECTION FOR DOWNHOLE TOOLS
The invention concerns a winder (1) for a threaded connection of two axially aligned bodies (2, 3) where: - a first body (2) comprises a male portion (4) at an end connection portion; - a second body (3) comprises a female portion (5) at an end connection portion; - the female portion (5) comprises a sleeve (51) with a threaded portion (53) on an internal face; - the winder (1) comprises a winder ring (6) encircling the male portion (4); and - the winder ring (6) forms an internal surface (12) and an external surface (18), and the external surface (18) comprises a threaded portion (13), and where - the winder ring's (6) internal surface (12) comprises a number of parallel grooves (14) that are perpendicular to a rotational axis of the winder ring (6). The invention further concerns a male portion (4) comprising external, circular grooves (48) that is complementary to internal, circular ridges (15) of the winder (1), and a threaded connection between two axially aligned bodies (2, 3) where the con- nection comprises the winder (1) and the male portion (4).
The invention relates to a method of cleaning a production tubing (10) in a producing petroleum well. The method comprises steps of: i) providing a collection tool (100) that configured for both selectively collecting debris (90) while residing downhole to obtain collected debris (92) as well as selectively releasing the collected debris (92) while residing downhole; ii) lowering said collection tool (100) to a specific location (99) at a certain depth into the production tubing (10) of the producing petroleum well where there is at least a partial choking of a local production flow due to accumulated debris (90) deposited on the production tubing (10); iii) collecting said accumulated debris (90) with the collection tool (100) to obtain collected debris (92); iv) pulling said collection tool (100) to a production zone (25) of the production tubing (10) or downstream of said production zone (25) where there will be enough production flow during production to ensure a lifting capacity for the collected debris (92), and v) releasing said collected debris (92) into the production zone (25) of the production tubing (10) to obtain released debris (94) being lifted by the production flow (35) when the production is running. The invention leads to tremendous time saving and thereby cost savings during cleaning of production tubing. (Figs, la-lh)
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
51.
SYSTEM AND METHOD FOR CLEANING A PRODUCTION TUBING
The invention relates to a method of cleaning a production tubing (10) in a producing petroleum well. The method comprises steps of: i) providing a collection tool (100) that configured for both selectively collecting debris (90) while residing downhole to obtain collected debris (92) as well as selectively releasing the collected debris (92) while residing downhole; ii) lowering said collection tool (100) to a specific location (99) at a certain depth into the production tubing (10) of the producing petroleum well where there is at least a partial choking of a local production flow due to accumulated debris (90) deposited on the production tubing (10); iii) collecting said accumulated debris (90) with the collection tool (100) to obtain collected debris (92); iv) pulling said collection tool (100) to a production zone (25) of the production tubing (10) or downstream of said production zone (25) where there will be enough production flow during production to ensure a lifting capacity for the collected debris (92), and v) re- leasing said collected debris (92) into the production zone (25) of the production tub- ing (10) to obtain released debris (94) being lifted by the production flow (35) when the production is running. The invention leads to tremendous time saving and thereby cost savings during cleaning of production tubing.
E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
Collecting device (1) for displacement in a tubing (9), the collecting device (1) is extended in shape with a longitudinal axis (99), the collecting device (1) forms a leading portion (11) with an entrance and an end portion (12); the collecting device (1) comprises: - a wall (4) extending from the leading portion (11) to the end portion (12); - a collecting chamber (5) formed inside a portion of the wall (4); - a filter positioned within the collecting chamber (5); - a motor (33); - a pump (6); and - an outlet (69) at the end portion (12), where the filter is a filter stocking (7) provided with an open first end portion (71) and a closed second end portion (79), and the open first end portion (71) faces the leading portion (11), and the filter stocking (7) forms a receptacle. A method for emptying the collecting device is described as well.
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
Collecting device (1) for displacement in a tubing (9), the collecting device (1) is extended in shape with a longitudinal axis (99), the collecting device (1) forms a leading portion (11) with an entrance and an end portion (12); the collecting device (1) comprises: - a wall (4) extending from the leading portion (11) to the end portion (12); - a collecting chamber (5) formed inside a portion of the wall (4); - a filter positioned within the collecting chamber (5); - a motor (33); - a pump (6); and - an outlet (69) at the end portion (12), where the filter is a filter stocking (7) provided with an open first end portion (71) and a closed second end portion (79), and the open first end portion (71) faces the leading portion (11), and the filter stocking (7) forms a receptacle. A method for emptying the collecting device is described as well.
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
Expansion tool (1) for expanding a tubing (91, 93), the expansion tool (1) comprises: - a rear portion (10); - an opposite leading end (19); - an expansion piston (4) within the expansion tool (1), the expansion piston (4) com- prising an expansion cone (47); and - radially movable expansion elements (33) forming a circumferential expansion body (3), where the rear portion (10) is adapted for engaging a power source (8), said power source (8) is positioned at the rear portion (10), and the expansion tool (1) further comprises: - a plurality of expansion arms (31) surrounding the expansion piston (4), each expansion arm (31) is on an outer side (315) provided with an expansion element (33); and - a wedge portion (37) between the expansion element (33) and the expansion cone (47), said wedge portion (37) abutting the expansion cone (47). A method for using the expansion tool (1) is also disclosed.
Expansion tool (1) for expanding a tubing (91, 93), the expansion tool (1) comprises: - a rear portion (10); - an opposite leading end (19); - an expansion piston (4) within the expansion tool (1), the expansion piston (4) com- prising an expansion cone (47); and - radially movable expansion elements (33) forming a circumferential expansion body (3), where the rear portion (10) is adapted for engaging a power source (8), said power source (8) is positioned at the rear portion (10), and the expansion tool (1) further comprises: - a plurality of expansion arms (31) surrounding the expansion piston (4), each expansion arm (31) is on an outer side (315) provided with an expansion element (33); and - a wedge portion (37) between the expansion element (33) and the expansion cone (47), said wedge portion (37) abutting the expansion cone (47). A method for using the expansion tool (1) is also disclosed.
The invention relates to a downhole tractor having at least one hydraulic drive section, comprising a first hydraulic supply line (200, 200-1) for actuating at least one hydraulic cylinder (160) for actuating at least one tractor arm and a second hydraulic supply line (300, 300-1) for driving at least one hydraulic motor (170) for rotating at least one tractor wheel. The downhole tractor further comprises a hydraulic power pack (100) configured for supplying hydraulic fluid to the hydraulic supply lines (200, 200-1, 300, 300-1). The hydraulic power pack (100) comprises a pressure-setting valve (115) provided in between the first hydraulic supply line (200, 200-1) and the second hydraulic supply line (300, 300- 1), wherein the pressure-setting valve (115) is configured for feeding excess hydraulic fluid in the first hydraulic supply line (200, 200-1) to the second hydraulic supply line (300, 300-1) to increase the speed of the downhole tractor.
E21B 23/04 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
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
F15B 13/07 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors in distinct sequence
57.
DOWNHOLE TRACTOR COMPRISING TWO OR MORE HYDRAULIC SUPPLY LINES
The invention relates to a downhole tractor having at least one hydraulic drive section, comprising a first hydraulic supply line (200, 200-1) for actuating at least one hydraulic cylinder (160) for actuating at least one tractor arm and a second hydraulic supply line (300, 300-1) for driving at least one hydraulic motor (170) for rotating at least one tractor wheel. The downhole tractor further comprises a hydraulic power pack (100) configured for supplying hydraulic fluid to the hydraulic supply lines (200, 200-1, 300, 300-1). The hydraulic power pack (100) comprises a pressure-setting valve (115) provided in between the first hydraulic supply line (200, 200-1) and the second hydraulic supply line (300, 300- 1), wherein the pressure-setting valve (115) is configured for feeding excess hydraulic fluid in the first hydraulic supply line (200, 200-1) to the second hydraulic supply line (300, 300-1) to increase the speed of the downhole tractor.
E21B 23/04 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
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
F15B 13/07 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors in distinct sequence
58.
OVERVOLTAGE CLAMP WITH PARALLEL CONTROLLED RESISTIVE PATH
The invention relates to an overvoltage protection circuit (106, 300, 501, 604, 703, 800) comprising: i) a first terminal (V+) and a second terminal (V-) for receiving a supply voltage (VL) at a load (103); ii) a voltage clamping circuit (801) connected between said terminals (V+, V-) and providing a clamping current path (CCP) between said terminals (V+, V-) as soon as the supply voltage (VL) over said terminals (V+, V-) reaches a preset clamping voltage (VCLP) such that said supply volt- age (VL) is substantially limited to said clamping voltage (VCLP). The overvoltage protection circuit (106, 300, 501, 604, 703, 800) further comprises a controllable resistance circuit (803) connected between said terminals (V+, V-) parallel to the voltage clamping circuit (801), wherein the controllable resistance circuit (803) is configured for providing a resistive current path (RCP) parallel to the clamping current path (CCP) of the voltage clamping circuit (801) when the voltage clamping circuit (801) is activated such that it conducts an electrical current (Icl), and for providing a high- impedance parallel to the clamping current path (CCP) of the voltage clamping circuit (801) when voltage clamping circuit (801) is deactivated. The invention provides for a solution that exploits the benefits of two different solutions namely that of voltage clamping semiconductor elements and resistors.
The invention relates to an overvoltage protection circuit (106, 300, 501, 604, 703, 800) comprising: i) a first terminal (V+) and a second terminal (V-) for receiving a supply voltage (VL) at a load (103); ii) a voltage clamping circuit (801) connected between said terminals (V+, V-) and providing a clamping current path (CCP) between said terminals (V+, V-) as soon as the supply voltage (VL) over said terminals (V+, V-) reaches a preset clamping voltage (VCLP) such that said supply volt- age (VL) is substantially limited to said clamping voltage (VCLP). The overvoltage protection circuit (106, 300, 501, 604, 703, 800) further comprises a controllable resistance circuit (803) connected between said terminals (V+, V-) parallel to the voltage clamping circuit (801), wherein the controlla- ble resistance circuit (803) is configured for providing a resistive current path (RCP) parallel to the clamping current path (CCP) of the voltage clamping circuit (801) when the voltage clamping circuit (801) is activated such that it conducts an electrical current (Icl), and for providing a high- impedance parallel to the clamping current path (CCP) of the voltage clamping circuit (801) when voltage clamping circuit (801) is deactivated. The invention provides for a solution that exploits the benefits of two different solutions namely that of voltage clamping semiconductor elements and resistors.
System (1) for cleaning at least one receptacle (2), said receptacle (2) is formed with a bottorn end (20) and a top end (29), and said receptacle (2) is housing an auger conveyor (22), where the system (1) comprises:- at least one bottom sub (3) comprising an inlet end (30) and an outlet end (39), said outlet end (39) is releasly connectable to the receptacle' s (2) bottom end (20); - at least one top assembly (4), comprising a house (41) with an entrance (40) re-leasly connectable to the receptacle' s (2) top end (29) and an outlet (49) for connec-tion to an outlet line (43), a chamber (42) within the house (41), said chamber (42) forming a flow path between the entrance (40) and the outlet (49);- a retention tank (5) connected to the at least one top assembly's (4) outlet (49) by the outlet line (43); and- a pump (6, 6') connected to the retention tank (5) on the pump's (6, 6') suction side by a supply line (53), and said pump (6, 6') on the pressure side being connected to the at least one bottom sub (3) by an inlet line 33.A method of using the system (1) is described as well.
B08B 3/02 - Cleaning by the force of jets or sprays
B08B 9/027 - Cleaning the internal surfacesRemoval of blockages
B08B 9/032 - Cleaning the internal surfacesRemoval of blockages by the mechanical action of a moving fluid, e.g. by flushing
E21B 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
System (1) for cleaning at least one receptacle (2), said receptacle (2) is formed with a bottom end (20) and a top end (29), and said receptacle (2) is housing an auger conveyor (22), where the system (1) comprises: - at least one bottom sub (3) comprising an inlet end (30) and an outlet end (39), said outlet end (39) is releasly connectable to the receptacle' s (2) bottom end (20); - at least one top assembly (4), comprising a house (41) with an entrance (40) releasly connectable to the receptacle' s (2) top end (29) and an outlet (49) for connection to an outlet line (43), a chamber (42) within the house (41), said chamber (42) forming a flow path between the entrance (40) and the outlet (49); - a retention tank (5) connected to the at least one top assembly's (4) outlet (49) by the outlet line (43); and - a pump (6, 6') connected to the retention tank (5) on the pump's (6, 6') suction side by a supply line (53), and said pump (6, 6') on the pressure side being connected to the at least one bottom sub (3) by an inlet line 33. A method of using the system (1) is described as well.
B08B 9/032 - Cleaning the internal surfacesRemoval of blockages by the mechanical action of a moving fluid, e.g. by flushing
B08B 3/02 - Cleaning by the force of jets or sprays
B08B 9/027 - Cleaning the internal surfacesRemoval of blockages
E21B 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
62.
DOWNHOLE DEBRIS-COLLECTING TOOL HAVING AN IMPROVED VALVE
The invention relates to a downhole tool (100) for collecting debris in a petroleum well. The downhole tool (100) comprises: i) a housing (120) connected with a collection chamber (130-1, 130-2) for receiving debris, the housing (120) having an opening (105) for collecting the debris from the petroleum well, the opening (105) being in fluid communication with the collection chamber (130-1, 130-2) through the housing (120); ii) a rotatable shaft (110b) with transport blades (119) arranged within the housing (120) and extending from the opening (105) to the collection chamber (130-1, 130-2), the rotatable shaft (110b) being configured for transporting the debris from the opening (105) to the collection chamber (130-1, 130-2) in operational use; iii) an annular area (121) defined between the rotatable shaft (110b) and an inner wall of the housing (120), and iv) a valve (125) configured for keeping the debris in the collection chamber (130-1, 130-2), wherein the valve (125) is located within the housing (120) between the opening (105) and the collection chamber (130-1, 130-2), wherein the valve (125) further comprises a seal member (125s) with a movable part (125sm) being mounted in the annular area (121) and around the rotatable shaft (110b), wherein the valve (125) is opened when the movable part (125sm) moves in direction of the collection chamber (130-1, 130-2), wherein the valve (125) is configured such that the movable part (125sm) of the seal member (125s) is only movable in the direction towards the collection chamber (130-1, 130-2) when closed. The downhole tool of the invention provides a valve, which is easily opened, requiring a very small force, while at the same time providing a very good sealing effect when the seal member is closed.
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
E21B 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
63.
DOWNHOLE DEBRIS-COLLECTING TOOL HAVING AN IMPROVED VALVE
The invention relates to a downhole tool (100) for collecting debris in a petroleum well. The downhole tool (100) comprises: i) a housing (120) connected with a collection chamber (130-1, 130-2) for receiving debris, the housing (120) having an opening (105) for collecting the debris from the petroleum well, the opening (105) being in fluid communication with the collection chamber (130-1, 130-2) through the housing (120); ii) a rotatable shaft (110b) with transport blades (119) arranged within the housing (120) and extending from the opening (105) to the collection chamber (130-1, 130-2), the rotatable shaft (110b) being configured for transporting the debris from the opening (105) to the collection chamber (130-1, 130-2) in operational use; iii) an annular area (121) defined between the rotatable shaft (110b) and an inner wall of the housing (120), and iv) a valve (125) configured for keeping the debris in the collection chamber (130-1, 130-2), wherein the valve (125) is located within the housing (120) between the opening (105) and the collection chamber (130-1, 130-2), wherein the valve (125) further comprises a seal member (125s) with a movable part (125sm) being mounted in the annular area (121) and around the rotatable shaft (110b), wherein the valve (125) is opened when the movable part (125sm) moves in direction of the collection chamber (130-1, 130-2), wherein the valve (125) is configured such that the movable part (125sm) of the seal member (125s) is only movable in the direction towards the collection chamber (130-1, 130-2) when closed. The downhole tool of the invention provides a valve, which is easily opened, requiring a very small force, while at the same time providing a very good sealing effect when the seal member is closed.
E21B 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
64.
DOWNHOLE TRACTOR COMPRISING A HYDRAULIC SUPPLY LINE FOR ACTUATING HYDRAULIC COMPONENTS
The invention relates to a downhole tractor comprising a hydraulic supply line (200, 300) for actuating hydraulic components (160-1..160-4, 170-1..170-4). The downhole tractor further comprises a hydraulic power pack (100) coupled to the hydraulic supply line (200, 300), at least one hydraulic component (160-1, 160-2, 170-1, 170-2) and at least one further hydraulic component (160-3, 160-4, 170-3, 170-4, 520). Said hydraulic components (160-1..160..4, 170-1..170-4) are coupled to the hydraulic supply line (200, 300) in parallel and configured for being actuated by the hydraulic supply line (200, 300). The hydraulic supply line (200, 300) comprises a controllable valve (410-1, 410-2) placed at a location in between the at least one hydraulic component (160-1, 160-2, 170-1, 170-2) and the at least one further hydraulic component (160-3, 160-4, 170-3, 170-4, 520) such that a first part (200-1a, 300-1a, 300-1) of the hydraulic supply line (200, 300) is coupled to a second part (200-1b, 300-1b, 300-2) of the hydraulic supply line (200, 300) via the controllable valve (410-1, 410-2). The downhole tractor of the invention provides for a much better control of the downhole tractor and facilitates tuning the performance of the tractor to the actual needs.
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
65.
DOWNHOLE TRACTOR COMPRISING A HYDRAULIC SUPPLY LINE FOR ACTUATING HYDRAULIC COMPONENTS
The invention relates to a downhole tractor comprising a hydraulic supply line (200, 300) for actuating hydraulic components (160-1..160-4, 170-1..170-4). The downhole tractor further comprises a hydraulic power pack (100) coupled to the hydraulic supply line (200, 300), at least one hydraulic component (160-1, 160-2, 170-1, 170-2) and at least one further hydraulic component (160-3, 160-4, 170-3, 170-4, 520). Said hydraulic components (160-1..160..4, 170-1..170-4) are coupled to the hydraulic supply line (200, 300) in parallel and configured for being actuated by the hydraulic supply line (200, 300). The hydraulic supply line (200, 300) comprises a controllable valve (410-1, 410-2) placed at a location in between the at least one hydraulic component (160-1, 160-2, 170-1, 170-2) and the at least one further hydraulic component (160-3, 160-4, 170-3, 170-4, 520) such that a first part (200-1a, 300-1a, 300-1) of the hydraulic supply line (200, 300) is coupled to a second part (200-1b, 300-1b, 300-2) of the hydraulic supply line (200, 300) via the controllable valve (410-1, 410-2). The downhole tractor of the invention provides for a much better control of the downhole tractor and facilitates tuning the performance of the tractor to the actual needs.
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
An activating tool (1) for connecting to and displacing a component (40) in a well tube (4), the activating tool (1) including : - a driving device (8) which may axially be displaced in two axial directions; - a sleeve-shaped release element (14) provided with an annular end portion (52); - a gripper holder (20) which is arranged in an axially displaceable manner in the release element (14) and is displaced by the driving device (8); - axially longitudinal recesses (24) in the gripper holder (20); - at least two radially displaceable gripping elements (26) spring-biased in a radial outward direction, positioned in respective recesses (24) and complementarily fitting respective cut-outs (42) in the component (40), and each gripping element (26) being provided with a slanted rear portion (48); so that the gripping elements (26) are retracted into the release element (14) in the passive positions of the gripping elements (26), and the gripping elements (26) are, at least partially, displaced out of the release element (14) in the active positions of the gripping elements (26) so that: the end portion (52) hits the slanted rear portions (48) of the gripping elements (26) when the gripper holder (20) is pulled inwards in the release element (14), so that the gripping elements (26) may optionally be switched between taking an active position and a passive position. A method for changing the gripping element (26) in the activating tool (1) is described as well.
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in 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
E21B 31/20 - Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
patents
