Downhole tool head for releasing precipitated solids

The present invention relates to a downhole tool head ( 1 ) for mounting onto a downhole tool ( 10 ) for drilling in a formation downhole or for releasing precipitated solids ( 2 ), such as ice, scales or the like, in a cavity fluid in a pipeline, a casing ( 3 ), a well or any other cavity downhole. The downhole tool head comprises a hollow cylindrical body ( 4 ) with a circumferential wall ( 5 ) extending from a base part of the body, the circumferential wall having a circumferential rim ( 6 ) in its end opposite the base part. The circumferential rim ( 6 ) comprises a plurality of edges ( 8 ) for cutting, grinding, drilling and/or milling, and the base part has a plurality of through-going holes ( 9 ) for letting cavity fluid comprising precipitated solids pass the holes.

Positioning tool

The invention relates to a positioning tool for determining the position in a casing downhole. The positioning tool has a longitudinal tool axis (A) and comprises a detecting unit (2) comprising a first magnet (4) for generating a magnetic field (14), a first sensor (6) arranged in a first plane and at a first distance from the first magnet, for detecting changes in the magnetic field, and a second (5) sensor arranged in the first plane and at a second distance from the first sensor along (6) the axis, also for detecting changes in the magnetic field.

Downhole artificial lifting system

The present invention relates to a downhole artificial lifting system for introducing fluid into a production casing from an annulus arranged outside the production casing. The production casing has an axial extension and a casing wall with a wall thickness, and the system comprises the production casing which at a first part is surrounded by an intermediate casing creating the annulus which is downwardly closed, and a fluid delivering means pumping fluid into the annulus. The invention also relates to a tool for use in the system and a method.

Downhole tool for borehole cleaning or for moving fluid in a borehole

The present invention relates to a downhole tool ( 1 ) for borehole cleaning or for moving fluid in a borehole. The tool comprises a tool housing ( 29 ), a chamber inlet ( 6 ) and a chamber outlet ( 36 ), and the tool housing comprises a pump ( 8 ) arranged in a pump housing ( 4 ) and a driving unit powered by an electrical conducting means for driving the pump.

Downhole Guiding Tool

The present invention relates to a downhole tool for guiding a device into a side track of a borehole, the tool having a tool axis and comprising a tool housing connected to an energy source. The invention further relates to a method for moving the downhole tool into a side track.

Pumping system

The present invention relates to a wellbore pumping system submerged into a wellbore for unloading liquid from a wellbore comprising well fluid, such as gas, having a wellbore pressure, comprising a pump having an inlet and an outlet, a tubing fluidly connected with the outlet of the pump, and a driving unit connected with and powered by a cable, such as a wireline, and having a rotatable drive shaft for driving the pump, wherein the pump is a reciprocating pump comprising at least one pumping unit having a first moving member displaceable in a housing for sucking well fluid into and out of a first chamber. Furthermore, the invention relates to a wellbore pumping method.

Drill pipe

The present invention relates to an expansion device to be inserted in a casing or well tubular structure for expanding an annular barrier downhole. The annular barrier comprises a tubular structure for mounting as part of the well tubular structure, an expandable sleeve surrounding the tubular structure, and a connection part connecting the expandable sleeve with the tubular structure. The tubular structure has an opening and two projecting elements decreasing an inner diameter of the tubular structure. The expansion device comprises a tubular part extending between a first and a second end part, the tubular part comprising at least one opening arranged between the first and the second end; an inner face surrounding an inner space; and an outer face. Furthermore, the expansion device comprises at least a first and second sealing element sealingly connected to the outer face of the tubular part.

Modular downhole tool

The present invention relates to a downhole tool extending in a longitudinal direction, comprising a tool housing; an arm assembly pivotally mounted about a pivot point fixed in relation to the tool housing and movable between a retracted position and a projecting position in relation to the tool housing; an arm activation assembly for moving the arm assembly between the retracted position and the projecting position, the arm activation assembly being arranged inside the tool housing and having a first end face and a second end face adapted for being connected with the end faces of other arm activation assemblies; wherein the arm activation assembly comprises: a piston housing having a piston chamber extending in the longitudinal direction of the downhole tool and comprising: a first piston housing part, a second piston housing part removably connected to the first piston housing part, a piston member arranged inside the piston housing and connected with the arm assembly, the piston member being movable in the piston housing in the longitudinal direction of the downhole tool.

Fail-safe spring

The present invention relates to a downhole tool extending in a longitudinal direction, comprising a tool housing; an arm assembly movable between a retracted position and a projecting position in relation to the tool housing; an arm activation assembly for moving the arm assembly between the retracted position and the projecting position; wherein the arm activation assembly comprises: a piston housing comprising a piston chamber, said piston chamber extending in the longitudinal direction of the downhole tool, a piston member arranged inside the piston chamber and engaged with the arm assembly to move the arm assembly between the retracted position and the projecting position, the piston member being movable in the longitudinal direction of the downhole tool and having a first piston face and a second piston face, the piston member being able to apply a projecting force on the arm assembly by applying a hydraulic pressure on the first piston face moving the piston in a first direction, and a spring member applying a spring force to move the piston in a second direction opposite the first direction. Furthermore, the invention relates to a downhole system.

Downhole driving unit having a hydraulic motor with a planetary gearing system

The present invention relates to a downhole driving unit ( 11 ) for insertion into a well, comprising a driving unit housing ( 51 ), a hydraulic motor ( 23 ) comprising a hydraulic motor housing ( 93 ), a wheel assembly ( 90 ) comprising a stationary part ( 91 ) and a rotational part ( 92 ), the stationary part being connected with the driving unit housing and being rotatably connected with a rotational part, the wheel assembly comprising a wheel ring ( 99 ) for contacting an inner wall in the well and connected with or forming part of the rotations part. The wheel assembly further comprises the hydraullic motor ( 23 ) so that the stationary part and the rotational part constitute the hydraulic motor housing, the hydraulic motor comprising a rotatable section ( 84 ) connected with the rotational part for rotating part of the wheel assembly. Furthermore, the wheel assembly comprises a planetary gearing system ( 95 ) comprised in the hydraulic motor housing and the hydraulic motor comprises a rotatable section driving the wheel ring through the planetary gearing system. The invention furthermore relates to a downhole system comprising the driving unit and to use of such driving unit.

Downhole driving unit having a hydraulic motor in a wheel

The present invention relates to a downhole driving unit (11) (for insertion into a well, comprising a driving unit housing (51), an arm assembly (60) movable between a retracted position and a projecting position in relation to the driving unit housing, an arm activation assembly (41) arranged in the driving unit housing for moving the arm assembly between the retracted position and the projecting position and a wheel assembly (90) comprising a stationary part (91) and a rotational part (92), the stationary part being connected with or forming part of the arm assembly and being rotatably connected with a rotational part. The wheel assembly comprises a hydraulic motor comprising a hydraulic motor housing (93) and a rotatable section (84) connected with the rotational part for rotating part of the wheel assembly. Furthermore, the present invention relates to a downhole system comprising said driving unit and to use of such driving unit.

Downhole tubing cutter tool

The present invention relates to a downhole tubing cutter tool for submerging into a casing in a wellbore and separating an upper part of the casing from a lower part of the casing by cutting the casing from within, the tool extending in a longitudinal direction, comprising a tool housing having a first and a second housing part, 100 a cutting arm which is pivotably connected with the first housing part and has a cutting edge in a first end, said arm being movable between a retracted position and a projected position in relation to the tool housing, an arm activation assembly for moving the cutting arm between the retracted position and the projected position, and a rotatable shaft arranged in the second housing part and connected with the first housing part for rotating the cutting arm.

Downhole tool string

A downhole tool string comprising a motor unit ( 3 ) having a rotational shaft rotating with a rotational motor speed; a gear section; an operational tool having a tool shaft rotated by the gear section ( 5 ) at a lower rotational speed than that of the rotational shaft; and a pump unit ( 8 ) having a rotor shaft rotated by the motor unit ( 3 ) for providing fluid around or past an operational tool ( 6 ). The pump unit ( 8 ) is arranged between the gear section ( 5 ) and the operational tool ( 6 ).

A method and apparatus for verifying a well model

The present invention relates to a method for verifying a well model, comprising the steps of receiving stored well data of an existing well, forming a model based on the received well data, submerging a tool for performing a work task into the existing well, wherein the tool is arranged to sense present well characteristics when submerged, receiving tool data corresponding to the presently sensed well characteristics from the tool, said tool data representing downhole properties relevant to downhole operation and performance of the tool, and performing a confirmation check by comparing the well data of the model with the tool data. Furthermore, the present invention relates to a well model verifying apparatus, to a well model verifying system and to a computer readable storage medium.

Downhole tool string for plug and abandonment by cutting

The present invention relates to a downhole plug and abandonment system ( 100 ) for a well ( 105 ), comprising a first well tubular metal structure ( 101 a ) having a wall, a second well tubular metal structure ( 101 b ) having a wall, the second well tubular metal structure being arranged inside the first well tubular metal structure, the well tubular metal structures having longitudinal extensions and being arranged in a borehole ( 104 ) of a well, a packer ( 350 ) arranged between the first well tubular metal structure and the second well tubular metal structure defining an annular space ( 351 ) above the packer, a first plug ( 106 ) arranged in the second well tubular metal structure dividing the second well tubular metal structure into a first part ( 107 ) and a second part ( 108 ), the first part being closest to a top of the well, and a cement plug ( 270 ) arranged in the first part on top of the packer and the plug. Furthermore, the present invention relates to a downhole plug and abandonment method.

Annular barrier with compensation device

The present invention relates to an annular barrier to be expanded in an annulus between a well tubular structure and an inside wall of a borehole downhole for providing zone isolation between a first zone and a second zone of the borehole, comprising a tubular part for mounting as part of the well tubular structure, the tubular part having a longitudinal axis, an expandable sleeve surrounding the tubular part and defining a space being in fluid communication with an inside of the tubular part, each end of the expandable sleeve being connected with the tubular part, and an aperture for letting fluid into the space to expand the expandable sleeve, wherein the barrier further comprises a compensation device arranged in the space between the expandable sleeve and the tubular part, the compensation device having a chamber in which a piston is arranged dividing the chamber in a first and a second chamber part, the first chamber part being in fluid communication with the space and the second chamber part comprising gas.

Dual function downhole tool

The present invention relates to a multifunctional downhole wireline tool for fluid sampling and fluid jetting in a well downhole, comprising a pump having a pump opening, and a fluid chamber for collecting a sample of fluid or storage of fluid to be jetted, the fluid chamber having a first chamber end connected with the pump opening and a second chamber end having a chamber opening, wherein the fluid chamber has a chamber wall and comprises a first piston and a second piston dividing the fluid chamber into a first chamber section, a second chamber section and a third chamber section, the first piston being connected with a first end of a first piston rod, the second piston being connected with a first end of a second piston rod, a first support configured to support the first piston rod, a second support configured to support the second piston rod, and a first spring provided between the first piston and the first support and another first spring provided between the second piston and the second support, so that when the pump provides a pressure difference over the pistons, the pistons are forced in one direction, hence activating a spring force of the first springs and allowing the fluid to flow from one chamber section to another chamber section. The present invention further relates to a downhole system for fluid sampling and fluid jetting in a well downhole and to a sampling method and a jetting method using a multifunctional downhole wireline tool according to the present invention.

Downhole cleaning tool and cleaning method

The present invention relates to a downhole cleaning tool for removing residues or precipitation solids on an inner face of a casing or liner. The downhole cleaning tool comprises a tool body having a bore and a wall, at least one inlet in the wall of the tool body, said inlet being fluidly connected with the bore, a solid removing element connected with the tool body for releasing solids of the inner face of the casing or liner, and a fluid cleaner section comprising a chamber, a filter within the chamber for separation of the solids from the fluid and a pump fluidly connected with the bore for sucking fluid with released solids in through the inlet into the chamber, wherein the solid removing element comprises at least one projecting part projecting from the tool body and a spring arranged between the tool body and the projecting part, and wherein the at least one inlet may be arranged adjacent the projecting parts for suction of released solids. Furthermore, the present invention relates to a downhole system and a cleaning method for removing residues or precipitation solids on an inner face of a casing or liner.

Downhole completion system

The present invention relates to a downhole completion system comprising a production casing installed in a bore-hole and an annular barrier system to be expanded in an annulus between a production casing and a wall of a borehole or another well tubular structure downhole for providing zone isolation between a first zone having a first pressure and a second zone having a second pressure of the borehole, the downhole completion system comprising an annular barrier comprising a tubular metal part adapted to be mounted as part of the production casing, the tubular metal part having an outer face, an expandable metal sleeve surrounding the tubular metal part and having an inner sleeve face facing the tubular metal part and an outer sleeve face facing the wall of the borehole, each end of the expandable metal sleeve being connected with the tubular metal part, and an annular space between the inner sleeve face of the expandable metal sleeve and the tubular metal part, the annular space having a space pressure, wherein the downhole completion system further comprises a sensor device which is in communication with the first zone and/or second zone, respectively, the sensor device being adapted to measure the first pressure of the first zone and the second pressure of the second zone for verifying the zone isolation. The present invention also relates to a verification method for verifying zone isolation and to a monitoring method for monitoring a condition of a well.

Downhole pumping tool

The present invention relates to the use of a downhole pumping tool for removing a hydrate formation forming a hydrate plug in a tubing in a well, the downhole pumping tool comprising a pump having a pump inlet and a pump outlet, an electric motor for driving the pump, a wireline for powering the electric motor, the pump having a first end arranged closest to the wireline and a second end facing the hydrate plug, wherein the pump inlet is arranged in the second end, and the pump inlet contacts a first face of the hydrate plug, the pump providing suction to remove at least part of a plurality of gas molecules from the hydrate plug for dissolving at least part of the hydrate formation. The invention also relates to a hydrate removal method for removing hydrate formation forming a hydrate plug in a tubing.

Fracturing method using in situ fluid

The present invention relates to a fracturing method for providing fractures in a formation downhole for optimising hydro-carbon production, such as gas or shale gas production, in a well having a well tubular metal structure comprising several self-closing flow assemblies, each self-closing flow assembly comprising a sleeve which is movable along a longitudinal axis of the well tubular metal structure for opening or closing a port in the well tubular metal structure. The method comprises providing fracturing fluid derived from in situ hydro-carbons; submerging an activation device into the well tubular metal structure; pressurising the well tubular metal structure by means of the fracturing fluid derived from in situ hydro-carbons for moving the activation device towards a first self-closing flow assembly; engaging the sleeve of the first self-closing flow assembly by means of the activation device; further pressurising the well tubular metal structure by means of the fracturing fluid derived from in situ hydro-carbons for moving the sleeve of the first self-closing flow assembly and thereby opening the port; injecting the fracturing fluid derived from in situ hydr-carbons through the port of the first self-closing flow assembly for providing fractures in the formation; decreasing a pressure of the fracturing fluid by 0.5-20% for releasing the activation device from the first self-closing flow assembly, thereby closing the port; and moving the activation device by means of pressurised fracturing fluid for engaging a second self-closing flow assembly.

Stimulation method

The present invention relates to a stimulation method comprising the steps of arranging a fluid-activated gun in a well through a well head and/or a blowout preventer, dividing the well into a first and a second part, the first part being closer to the well head and/or blowout preventer than the second part, pressurising the first part of the well with a hot fluid, the hot fluid having a temperature which is higher than the temperature of the formation at a downhole point of injection, activating the fluid-activated gun, thereby converting energy from the pressurised hot fluid into mechanical waves, directing said mechanical waves into the formation, and injecting the hot fluid into the formation simultaneous to activation of the fluid-activated gun by means of the hot fluid. Furthermore, the present invention relates to a stimulation system for stimulation of oil production in an oil field.

Drop device

The present invention relates to a downhole system for a well producing hydro-carbon-containing fluid. The downhole system comprises a casing comprising a first casing part and a second casing part, the second casing part having a casing thickness and comprising at least one sleeve having an inner face, and the second casing part being substantially a monobore in that the second casing part has an inner diameter which varies by less than twice the casing thickness; and a drop device for being immersed into the casing having at least one sleeve having an inner face. The drop device comprises a body having a width; a leading end; and a trailing end. The body further comprises an expandable sealing element arranged between the leading end and the trailing end, moving from a first position in which fluid is allowed to pass the device and a second position in which the sealing element abuts the inner face of the sleeve and seals off a first zone in the well from a second zone in the well. Furthermore, the invention relates to a downhole system and a stimulation method.

Cleaning tool and a method for treating an inner surface of a casing

The present invention relates to a cleaning tool for cleaning and treating an inner surface of a downhole casing. The cleaning tool comprises a tool housing, a mechanical cleaning tool section comprising mechanical cleaning elements for releasing elements of the inner surface of the casing in order to clean the casing to become substantially free from rigid debris and other precipitated materials, and a jetting tool section for ejecting an enzyme-containing fluid onto the cleaned inner surface. The jetting tool section comprises a fluid chamber comprising the enzyme-containing fluid, and a nozzle head comprising at least one nozzle. The invention further relates to a method for treating an inner surface of a casing by means of the cleaning tool.

Annular barrier and annular barrier system

The present invention relates to an annular barrier system for expanding an annular barrier in an annulus between a well tubular structure and an inside wall of a borehole downhole. The annular barrier system comprises an annular barrier having a tubular part for mounting as part of the well tubular structure, the annular barrier further comprising an expandable sleeve surrounding the tubular part, at least one end of the expandable sleeve being fastened in a fastening means of a connection part in the tubular part. The annular barrier system also comprises a tool for expanding the expandable sleeve by letting a pressurised fluid through a passage in the tubular part into a space between the expandable sleeve and the tubular part.

Punching tool

The present invention relates to a punching tool for providing a hole or a dimple in a metal casing in a borehole. The punching tool comprises a tool body having an axial extension, and a punching unit connected with the tool body comprising: a fluid inlet, a punch movable between a retracted and a projected position and extending substantially radially in relation to the axial extension, and at least one hydraulic punch cylinder moving the punch between the retracted and the projected position. The present invention further relates to a method for providing a hole or a dimple in a metal casing downhole and to a method for installing a plug in an existing hole in the casing downhole.

Annular barrier with an anti-collapsing unit

The present invention relates to an annular barrier to be expanded in an annulus between a well tubular structure and a wall of a borehole downhole for providing zone isolation between a first zone having a first pressure and a second zone having a second pressure of the borehole. The annular barrier comprises a tubular metal part for mounting as part of the well tubular structure, the tubular metal part having an outer face; an expandable sleeve surrounding the tubular metal part and having an inner face facing the tubular metal part and an outer face facing the wall of the borehole, each end of the expandable sleeve being connected with the tubular metal part; and an annular space between the inner face of the expandable sleeve and the tubular metal part, the annular space having a space pressure. The annular barrier comprises an anti-collapsing unit comprising an element movable at least between a first position and a second position, the anti-collapsing unit having a first inlet which is in fluid communication with the first zone, and a second inlet which is in fluid communication with the second zone, and the anti-collapsing unit having an outlet which is in fluid communication with the annular space, and in the first position, the first inlet is in fluid communication with the outlet, equalising the first pressure of the first zone with the space pressure, and in the second position, the second inlet is in fluid communication with the outlet, equalising the second pressure of the second zone with the space pressure. The present invention furthermore relates to a downhole system and a zone isolation method.

A downhole expandable tubular

The present invention relates to a downhole expandable tubular to be expanded in a well downhole from a first outer diameter to a second outer diameter to abut against an inner face of a easing or borehole, the downhole expandable tubular having an outer face and a longitudinal extension and comprising at least one first circumferential edge and at least one second circumferential edge provided on the outer face and spaced apart in the longitudinal extension, wherein a sealing element and a split ring-shaped retaining element are arranged between the first and second circumferential edges, the split ring-shaped retaining element forming a back-up for the sealing element and wherein the split ring-shaped retaining element has more than one winding, so that when the expandable tubular is expanded from the first outer diameter to the second outer diameter, the split ring-shaped retaining element partly unwinds. Furthermore, the present invention relates to an annular barrier.

Annular barrier having a downhole expandable tubular

An annular barrier has a tubular part, and a downhole expandable tubular to be expanded in an annulus downhole from a first outer diameter to a second outer diameter to abut against an inner face of a casing or borehole. The downhole expandable tubular has a first end section, a second end section and an intermediate section between the first end section and the second end section, the downhole expandable tubular surrounding the tubular part. Each end section of the downhole expandable tubular is connected with the tubular part and extends along a longitudinal axis, and defines an annular barrier space between the tubular part and the downhole expandable tubular. The tubular is made from one metal tubular blank of one metal material, the metal material of the end sections having a higher yield strength than the metal material of the intermediate section.

Downhole operational tool

The present invention relates to a downhole operational tool for moving a tool part between a retracted position and a projected position in a well. The downhole operational tool comprises a tool body having an axial extension; the tool part being movable perpendicularly to the axial extension between the retracted position and the projected position; a projection actuator configured to project the tool part from the tool body by means of hydraulics, the projection actuator comprising an actuator housing and a projection piston configured to slide inside the actuator housing, the tool part being connected with the projection piston; and a retraction actuator comprising a spring element configured to retract the tool part into the tool body, the retraction actuator being connected with the projection piston so that when the projection actuator projects the tool part, the spring element is compressed. The spring element is arranged outside the actuator housing.

Downhole straddle assembly

The present invention relates to a downhole straddle assembly for straddling over a zone downhole in a well, the straddle assembly comprising a plurality of tubular sections mounted end to end in succession to form one tubular pipe having a first end tubular section forming a first open end of the tubular pipe, and a second end tubular section forming a second open end of the tubular pipe, said tubular pipe having an outer diameter, wherein the tubular section mounted to the first end tubular section is a first expandable metal sleeve being more pliant than the first end tubular section, and the tubular section mounted with the second end tubular section is a second expandable metal sleeve being more pliant than the second end tubular section. Furthermore, the present invention relates to a downhole straddle system for straddling over a zone downhole in a well and to a downhole straddle method. 15

Downhole system for unloading liquid

The present invention relates to a downhole system for unloading a liquid of a well in an annulus between an intermediate casing and a production tubular metal structure. The downhole system comprises the intermediate casing; a pump at a top of the well, configured to pressurise the annulus to displace the liquid in the annulus; the production tubular metal structure having a first inner diameter, arranged partly in the intermediate casing, thereby defining the annulus; a production packer arranged between the intermediate casing and the production tubular metal structure, and a first liquid unloading assembly and a second liquid unloading assembly, each comprising a tubular part having a wall having a second inner diameter, an outer face and an aperture, the tubular part being configured to be mounted as part of the production tubular metal structure; and a check valve connected with the outer face, the check valve having an inlet in fluid communication with the annulus and an outlet in fluid communication with the aperture. The downhole system further comprises a sliding sleeve arranged to slide along an inner face of the tubular part between an open position and closed position to open or close the aperture. Furthermore, the present invention relates to a liquid unloading method for unloading liquid of a well in an annulus between an intermediate casing and a production tubular metal structure.

Downhole drilling system

The present invention relates to a downhole drilling method for drilling a well in a formation having a formation pressure. The downhole drilling method comprises providing a drill string having a first part and a second part, the second part being arranged closer to a top of the well than the first part, and the first part having a drilling head in a first end and an annular barrier arranged closer to the top of the well than the drilling head. The annular barrier comprises a tubular metal part for mounting as part of the first part of the drill string, the tubular metal part having an outer face; an expandable metal sleeve surrounding the tubular metal part and having an inner face facing the tubular metal part and an outer face facing an inner face of a borehole of the well, each end of the expandable metal sleeve being connected with the tubular metal part; and an annular space between the inner face of the expandable metal sleeve and the tubular metal part, the expandable metal sleeve being configured to expand. The downhole drilling method furthermore comprises drilling the borehole by means of the drilling head; detecting the formation pressure to determine any loss of formation pressure; stopping the drilling; dropping a ball into the drill string; pressurising the drill string until the ball reaches a ball seat arranged opposite or below the annular barrier; expanding the expandable metal sleeve by further pressurising the drill string until the expandable metal sleeve abuts the inner face of the borehole; separating the second part of the drill string from the first part; pulling the second part out of the borehole; and injecting cement into the borehole above the first part to provide a cement plug above the first part. The present invention furthermore relates to a downhole drilling system for performing the downhole drilling method according to the present invention and to a downhole completion system.

Anchor tool

The present invention relates to an anchor tool (1) for anchoring a downhole tool within a casing (2), a well, or any other downhole, hollow space. The tool comprises a longi-tudinal tool body (3) with a centre axis (4) extending through the tool body in the centre of the body; a first recess (5), a second recess (5), a third recess (5), and a fourth recess (5) in the tool body; and a first anchor (6), a second anchor (6), a third anchor (6), and a fourth anchor (6), where the first anchor is provided in the first recess, and so forth, and the anchors are outwards movable in the recesses for anchoring the tool. Each anchor provided in the recesses extends through the tool body transverse to and across the centre axis and the anchors and the corresponding recesses are situated in the tool body for providing a symmetrical anchoring of the anchor tool.

具有压力放大的环状屏障

本发明涉及一种环状屏障，该环状屏障待在介于井管状结构和井筒的内壁之间的环空中膨胀以在所述井筒的第一区域和第二区域之间提供区域隔离，所述环状屏障包括：管状部件，该管状部件安装作为所述井管状结构的一部分并具有膨胀开口；包围所述管状部件的可膨胀套筒，该可膨胀套筒的各端部与所述管状部件连接在一起；以及在所述管状部件和所述可膨胀套筒之间的环状屏障空间；其中，所述环状屏障还包括压力增大装置，该压力增大装置具有在第一端部处的与所述膨胀开口流体连通的进口并具有在第二端部处的与所述环状屏障空间流体连通的出口。

废弃井塞及堵塞和废弃系统

本发明涉及一种用于堵塞和废弃井的废弃井塞，所述废弃井塞包括可封闭的或封闭的第一端部部件、为管状并具有在内表面上的凹槽的第二端部部件、布置在这两个端部部件之间的可膨胀金属套筒，这两个端部部件的刚性大于所述可膨胀金属套筒的刚性，和可释放地连接至第二管状端部部件的单元，所述单元包括至少一个可径向突伸的紧固元件、单元套筒、和能在所述单元套筒中移动的活塞，以便在第一位置，该活塞迫压可径向突伸的紧固元件并且在第二位置活塞相对于可径向突伸的紧固元件偏置，从而允许可径向突伸的紧固元件径向向内移动。此外，本发明涉及一种堵塞和废弃系统，其包括根据本发明的废弃井塞。

用于卸载液体的井下系统

本发明涉及一种用于卸载在技术套管与生产管状金属结构之间的环空中的井内液体的井下系统。井下系统包括：技术套管；在井的顶部处的泵，该泵构造成对环空进行加压以置换环空中的液体；具有第一内径的生产管状金属结构，其部分地布置在技术套管中，从而限定出环空；布置在技术套管与生产管状金属结构之间的生产封隔器；和第一液体卸载组件和第二液体卸载组件，每个均包括：具有壁部的管状部件，壁部具有第二内径、外表面和开孔，管状部件构造成安装为生产管状金属结构的一部分；以及与外表面连接的止回阀，止回阀具有与环空流体连通的入口和与开孔流体连通的出口。井下系统还包括滑动套筒，滑动套筒布置成沿管状部件的内表面而在打开位置与关闭位置之间滑动以打开或关闭开孔。此外，本发明涉及用于卸载在技术套管与生产管状金属结构之间的环空中的井内液体的液体卸载方法。

Downhole valve system

The present invention relates to a downhole valve system (1) for controlling inflow of a fluid from and to a formation, comprising a casing (2) having an inner surface, an outer diameter and an inner diameter, and a cross section defined by the inner diameter, the casing comprising a plurality of valves (4, 4a, 4b, 4c) arranged spaced apart from each other for controlling the inflow of the fluid from the formation through the casing; and a plurality of autonomous operating adjusting devices (5) each controlling one of the plurality of valves, each autonomous operating adjusting device comprising a body (6) having an outer body diameter and having a body cross section; the plurality of autonomous operating adjusting devices being fastened inside the casing in order to allow the fluid to flow between the outer body diameter of the body of the autonomous operating adjusting device and the casing. The present invention furthermore relates to a method for controlling an inflow of fluid by controlling a plurality of valves in a downhole valve system according to the present invention.

An annular barrier

本发明涉及一种用于在井道管状结构与井下井眼的内侧壁之间的环状空间中膨胀的环形阻挡装置。该环形阻挡装置包括：用于作为井道管状结构的一部分安装的管状部分；包围管状部分并具有面向管状部分的内表面的可膨胀套管，可膨胀套管的每一端均与一连接部分连接，该连接部分与管状部分连接；套管的内表面与管状部分之间的空间；和布置成与套管连接的元件，该元件具有两者均围绕所述内表面延伸的第一部分和第二部分，该元件的第一部分被紧固在所述内表面上。

A completion method and a downhole system

The present invention relates to a completion method for implementing a casing in a well containing liquid and having a top. The method comprises the steps of providing a one-way valve in a casing wall in a first end of the casing; filling the casing with gas; lowering the casing into the well while the liquid in the well prevents the gas from escaping through the valve; and introducing the first end of the casing into a substantially horizontal part of the well, whereby the gas provides buoyancy to the first end of the casing while moving the casing further into the well. Furthermore, the invention relates to a downhole system for carrying out the completion method.

Annular barrier completion system with induction system

一种井下系统，包括：‑第一井管结构(1A)和部分地布置在其内部的第二井管结构(1B)；‑包括第一感应耦合器部件(20A)并布置在第一井管结构的外表面(21)上并与导电体电连接的第一电单元(20)；‑用于在第一井管结构(1A)外侧的环空(2)中膨胀的环状屏障(10)，并且环状屏障包括：‑用于安装为第一井管结构的一部分的管状金属部件(7)，管状金属部件具有第一膨胀开口(3)、轴向延伸方向(L)和外表面(4)；‑围绕管状金属部件的可膨胀套筒(8)；‑构造成分别将可膨胀套筒的第一端部(13)和第二端部(14)与管状金属部件连接的第一连接部件(11)和第二连接部件(12)；和‑在可膨胀套筒的内表面与管状金属部件之间的环形空间(15)，其中环状屏障还包括在管状金属部件的外侧并在可膨胀套筒之中从第一连接部件延伸至第二连接部件的导电体(17)；和‑第二电单元(20B)，其包括第二感应耦合器部件(20B)并布置在第一井管结构的内侧以及布置在第二井管结构外侧并构造成邻接井管结构的内表面(22)以能向第二电单元传输电力和/或通信。

Downhole wireline machining tool string

The present invention relates to a downhole wireline machining tool string for increasing an inner diameter of a well tubular metal structure in a well. The downhole wireline machining tool string has a longitudinal axis (4) and comprises a rotatable tool part (5) comprising a machining tool (7) having a first end part (8), a second end part (9), a diameter and a circumference, and a stationary tool part (6) comprising a driving unit (10) configured to rotate the rotatable tool part (5) and powered through the wireline. The machining tool comprises a body (12) having an outer face (14), and the machining tool further comprising a plurality of inserts (15), each insert having a length along the longitudinal axis (4), and the inserts (15) projecting from the outer face (14) of the body (12) and being distributed around the circumference.

Downhole wireline machining tool string

The present invention relates to a downhole wireline machining tool string for increasing an inner diameter of a well tubular metal structure in a well. The downhole wireline machining tool string has a longitudinal axis (4) and comprises a rotatable tool part (5) comprising a machining tool (7) having a first end part (8), a second end part (9), a diameter and a circumference, and a stationary tool part (6) comprising a driving unit (10) configured to rotate the rotatable tool part (5) and powered through the wireline. The machining tool comprises a body (12) having an outer face (14), and the machining tool further comprising a plurality of inserts (15), each insert having a length along the longitudinal axis (4), and the inserts (15) projecting from the outer face (14) of the body (12) and being distributed around the circumference.

Downhole machining system and method

A formation penetrating tool

Arm assembly

The present invention relates to a downhole tool extending in a longitudinal direction, comprising a tool housing, an arm assembly movable between a retracted position and a projecting position in relation to the tool housing, the arm assembly comprising an arm member connected with the tool housing in one end, an arm activation assembly arranged in the tool housing for moving the arm assembly between the retracted position and the projecting position, a pump for circulating hydraulic fluid, wherein the arm assembly comprises a hydraulic mechanism arranged in connection with the arm member, and a fluid influx channel provided in the arm member, the fluid influx channel being in fluid communication with the hydraulic mechanism for supplying hydraulic fluid from the pump to the hydraulic mechanism. Furthermore, the invention relates to a tool string system comprising a plurality of downhole tools, wherein at least one of the downhole tools is a downhole tool according to the invention.

Annular barrier with closing mechanism

本发明涉及待在井下于井管结构与井孔壁部或另一井管结构之间的环空中膨胀以在井孔的具有第一压力的第一区域与具有第二压力的第二区域之间提供区域隔离的井下环状屏障，环状屏障包括适于安装为井管结构的一部分的管状部件，管状部件具有外表面和内侧；环绕管状部件并具有面向管状部件的套筒内表面和面向井孔壁部的套筒外表面的可膨胀金属套筒，可膨胀金属套筒的每个端部与管状部件连接；和在可膨胀金属套筒的套筒内表面与管状部件之间的环形空间；与内侧流体连通的第一开口；与环形空间流体连通的第二开口；具有孔延伸方向且包括具有第一内径的第一孔部段和具有比第一孔部段的内径更大的内径的第二孔部段的孔，其中，第一开口和第二开口布置在第一孔部段中且沿孔延伸方向间隔开，且环状屏障还包括：布置在孔中的活塞，活塞包括外径与第一孔部段的内径基本一致的第一活塞部分且包括外径与第二孔部段的内径基本一致的第二活塞部分；及断裂元件，其在孔内达到预定压力之前阻止活塞的移动。此外，本发明涉及环状屏障系统。

Downhole injection tool

本发明涉及一种井下注入工具（1），其用于将注入流体注入位于所述井下注入工具周围并由井眼或井管结构（3）的内壁（3a）包封的环形空间（5a）内。所述井下注入工具包括注入单元（10），其包括适合于提供抵靠所述内壁的第一密封部（119a）的第一可扩张皮碗（118a），适合于提供抵靠所述内壁的第二密封部（119b）的第二可扩张皮碗（118b），处于扩张状态下的所述两个皮碗一起限定出所述环形空间的被隔离区（5b），在所述两个皮碗之间沿纵向方向（13）延伸的至少一个管元件（111），所述管元件提供位于布置在所述管元件的一端中的入口（104）和布置在所述皮碗之间的所述管元件中的出口（125）之间的流体通道（108），所述第二可扩张皮碗与所述管元件可滑动地连接并在被注入所述被隔离区的注入流体的作用下沿纵向方向移离所述第一可扩张皮碗，由此使所述两个皮碗之间的距离d增加，其中所述注入单元还包括被可滑动地布置在所述可扩张皮碗周围的保持套筒（112），以防止在所述井下工具的插入过程中所述可扩张皮碗意外扩张，所述保持套筒可沿纵向方向滑动，并且所述可扩张皮碗通过所述保持套筒沿纵向方向的移动而被释放。另外，本发明涉及一种包括所述井下注入工具的井下系统以及用于在井下浇注水泥塞的方法。

Artificial lift tool

本发明涉及一种用于引入井眼或套管中并沉入井流体中的人工提升工具。该人工提升工具在纵向方向上从适于连接到钢丝绳的顶侧端部向底侧端部延伸。该工具包括马达单元和泵单元。此外，本发明涉及一种生产井，其中人工提升工具沉入井流体中；还涉及用于在井内提供人工提升的人工提升工具的用途；以及涉及用于在井内提供人工提升的方法。

Annular barrier with passive pressure compensation

本发明涉及一种待在井下于井管结构与井眼的内侧壁之间的环空内膨胀以在井眼的第一区域与第二区域之间提供区域隔离的环状屏障，该环状屏障包括：作为井管结构的一部分安装的管状金属部件；可膨胀套筒，其环绕管状金属部件并具有面向管状金属部件的内表面和面向井眼的内侧壁的外表面，可膨胀套筒的每个端部与管状金属部件连接；以及在可膨胀套筒的内表面与管状金属部件之间的环形空间，其中，管状部件与可膨胀套筒的内表面基本上气密封地封闭环形空间，环形空间包含适于使环形空间膨胀的化合物，并且其中，可膨胀套筒包括邻近可膨胀套筒的端部的两个第一部段和在所述两个第一部段之间的第二部段，可膨胀套筒的第一部段具有在环状屏障的未膨胀状态下的第一内径，并且可膨胀套筒的第二部段具有在未膨胀状态下的第二内径，在未膨胀状态下第二内径大于第一内径，或者在未膨胀状态下，第一部段具有大于第二部段的第二厚度的第一厚度。此外，本发明涉及井下系统和使环状屏障膨胀的方法。

Downhole driving unit having a spring member for assembling a hydraulic motor housing

本发明涉及一种用于插入井中的井下驱动单元（11），该井下驱动单元包括驱动单元壳体（51）、包括液压马达壳体（93）的液压马达（23）、包括静止部分（91）和旋转部分（92）的轮组件（90），所述静止部分与所述驱动单元壳体连接并与旋转部分可旋转地连接，所述静止部分和所述旋转部分构成所述液压马达壳体，所述旋转部分包括从一端封闭的轮环（99），其中，所述轮组件包括装配所述液压马达壳体的弹簧部件（113）。本发明还涉及一种井下系统，所述井下系统包括根据本发明的驱动单元和与所述驱动单元连接以在井或井眼中被向前移动的操作工具，以及根据本发明的驱动单元在井或井眼中的应用，用于在井或井眼中自行向前移动和/或使操作工具向前移动。

A downhole production casing string

本发明涉及一种用于插入储层中的井眼内的井下生产套管管柱，所述井下生产套管管柱具有最接近所述井眼的顶部的第一端和离所述顶部最远的第二端，所述井下生产套管管柱沿纵向轴线延伸并且包括：至少一个开口，该开口在生产期间允许来自储层的含烃流体进入井下生产套管管柱；多个套管部件，其具有端部区段和位于端部区段之间的基部区段，所述基部区段具有外径；和至少一个环形突出元件，其具有外表面和设置在所述外表面中或其上的至少一个螺旋沟槽并具有比所述基部区段的外径大的总外径。此外，本发明涉及一种用于完井的井下生产套管管柱系统和一种实现根据本发明的生产套管管柱的方法。

Tubular assembly

The present invention relates to a downhole tubular assembly for sealing an opening in a well tubular structure in a borehole downhole, comprising a first tubular part made of metal having an inner face, an inner diameter, an outer diameter and a first length in an unexpanded state, and a second tubular part having an outer face, an outer diameter and a second length, being arranged inside the first tubular part in an unexpanded state. Furthermore, the invention relates to a downhole system for sealing an opening in a well tubular structure in a borehole. Moreover, the invention relates to a method of sealing an opening in a well tubular structure in a borehole downhole and to a manufacturing method for manufacturing a downhole tubular assembly.

Downhole well-operation system

The present invention relates to a downhole well-operation system for operating a driving unit and a logging tool downhole and transmitting well-logging data from at least one logging tool to a surface data acquisition system by means of a wireline. The system comprises a surface transceiver, a wireline, a downhole transceiver, a logging tool, and a driving unit, wherein the downhole transceiver is coupled to the surface transceiver via the wireline and communicates to the surface transceiver using orthogonal frequency division multiplexing to transmit data via the wireline by modulating a Pulse Width Modulated (PWM) signal to the wireline by means of a transistor bridge, while the driving unit and at least one logging tool is powered by the wireline. Furthermore, the invention relates to a downhole tool.

Intervention system, and method for operating a intervention system

A intervention system (100) is provided. The intervention system (100) comprises a cable (10) being configured to be lowered into a wellbore (1), said cable (10) having an inner tube (11) enclosing one or more electrical conductors (12), and an outer tube (13) surrounding the inner tube (11). The intervention system (100) further comprises a downhole tool (50) being connected to a distal end (15) of the cable (10) and being configured to pull the cable (10) into the wellbore (1).

Intervention system and method for operating an intervention system

An intervention system is provided. The intervention system comprises a cable being configured to be lowered into a wellbore, said cable having an inner tube enclosing one or more electrical conductors, and an outer tube surrounding the inner tube. The intervention system further comprises a downhole tool being connected to a distal end of the cable and being configured to pull the cable into the wellbore.

Downhole turbine-driven system

The present invention relates to a downhole system for performing an operation in a well downhole. The system comprises an elongated tubing string for conducting fluid in the well; a turbine driven by the fluid for driving a shaft; a generator driven by the turbine, and an electrically driven driving section comprising an electrical motor powered by the generator for propelling the driving section and the tubing string forward in the well.

Well completion

本发明涉及一种用于穿过井口或封井器而进给到地层中的井眼中的完井组件，包括：套管柱，该套管柱具有第一端和第二端；和钻杆，该钻杆具有第一端和第二端且延伸通过井口或封井器，并且该钻杆在第一端处与套管柱可松放地连接。另外，本发明涉及用于完成套管柱的完井方法。此外，本发明涉及用于制造根据本发明的完井组件的完井套件。

Downhole hydraulic pump

本发明涉及一种用于在井下作业期间提供流体压力的井下液压泵，其包括：泵壳；凸轮轴，其可转动地设置在所述泵壳中且具有纵向转轴，所述凸轮轴包括轴和设置在所述轴上的凸轮凸部；放射状地设置的活塞，其具有壳端和凸轮端；活塞壳，其设置在所述泵壳中；入口阀，其设置在所述活塞壳的入口中；出口阀，其设置在所述活塞壳的出口中；以及活塞弹簧，该活塞弹簧设置在所述泵壳中以用于将所述活塞移离所述活塞壳，其中，所述活塞壳可转动地连接到所述泵壳，使得所述活塞壳能够绕平行于所述凸轮轴的纵向转轴的活塞壳转动轴转动。

Liquid unloading method and system

The present invention relates to a liquid unloading method for unloading liquid in a malfunctioning gas well having a top end and a bottom end and a gas production zone, the gas well having liquid accumulated in the bottom end and at least above the production zone. The method comprises the steps of providing a foaming agent on top of or in the liquid in the gas well; arranging a downhole tool at least partly submerged in the liquid; agitating fluid of the foaming agent and the liquid by the downhole tool; and forming foam of the liquid and the foaming agent at least partly above the gas production zone. Furthermore, the present invention relates to a downhole liquid unloading system for unloading liquid in a malfunctioning gas well.

A kind of downhole system

本发明涉及一种井下系统，其包括：上套管和下套管，该下套管布置在井眼中并包括具有可膨胀套筒的一个一个或多个环形屏障，其中，该下套管通过环状屏障与该上套管紧固。

Logging tool.

La presente invención se relaciona con una herramienta de registro para registrar cambios en la formación en un barreno, la herramienta de registro tiene un eje longitudinal. La herramienta de registro comprende una fuente radiante para emitir una señal de interacción, un detector para detectar una señal de reacción, y un filtro para limitar un volumen investigado por la fuente radiante y el detector, en donde la herramienta comprende una primera parte y una segunda parte, la segunda parte es capaz de girar alrededor del eje longitudinal en relación con la primera parte durante el uso, y la segunda parte que comprende el filtro, y en donde una velocidad de rotación de la segunda parte es controlada por la unidad de rotación para que sea proporcional a una señal de salida del detector. Adicionalmente, la presente invención se relaciona con un método de caracterización de una formación geológica que rodea a un barreno por medio de una herramienta de registro de conformidad con la presente invención.

A downhole expandable tubular

The present invention relates to a downhole expandable tubular to be expanded in a well downhole from a first outer diameter to a second outer diameter to abut against an inner face of a casing or borehole, the downhole expandable tubular having an outer face and a longitudinal extension and comprising at least one first circumferential edge and at least one second circumferential edge provided on the outer face and spaced apart in the longitudinal extension, wherein a sealing element and a split ring-shaped retaining element are arranged between the first and second circumferential edges, the split ring-shaped retaining element forming a back-up for the sealing element and wherein the split ring-shaped retaining element has more than one winding, so that when the expandable tubular is expanded from the first outer diameter to the second outer diameter, the split ring-shaped retaining element partly unwinds. Furthermore, the present invention relates to an annular barrier.

Hydraulic device

Downhole annular barrier provided with an electrical conductor

The present invention relates to an annular barrier (10) for being expanded in an annulus (2) between a well tubular structure (1) and a wall (5) of a borehole (6) or another well tubular structure downhole for providing zone isolation between a first zone having a first pressure and a second zone. The annular barrier comprises a tubular metal part (7) for mounting as part of the well tubular structure, the tubular metal part having a first expansion opening (3) , an axial extension (L) and an outer face (4); an expandable sleeve (8) surrounding the tubular metal part and having an inner face (9) facing the tubular metal part and an outer face (16) facing the wall of the borehole; a first connection part (11) and a second connection part (12) configured to connect a first end (13) and a second end (14), respectively, of the expandable sleeve with the tubular metal part; and an annular space (15) between the inner face of the expandable sleeve and the tubular metal part. The annular barrier further comprises an electrical conductor (17) extending from the first connection part to the second connection part. Furthermore, the present invention relates to a downhole system.

Release device

A downhole system including a driving unit for driving an operational tool. The driving unit is provided in a first part of the system and the operational tool is provided in a second part of the system. The system further includes a release device for releasing the operational tool and the second part from the first part of the system.

Annular barrier with an expansion detection device

The present invention relates to an annular barrier ( 1 ) to be expanded in an annulus ( 2 ) between a well tubular structure and an inside wall ( 4 ) of a borehole ( 5 ) downhole, comprising a tubular part for mounting as part of the well tubular structure, said tubular part ( 6 ) having a longitudinal axis; an expandable sleeve ( 7 ) surrounding the tubular part and having an outer face ( 8 ), each end ( 9, 10 ) of the expandable sleeve being fastened to the tubular part by means of a connection part ( 12 ), where one of the connection parts is a sliding connection part sliding in relation to the tubular part when the expandable sleeve is expanded; an annular barrier space ( 13 ) between the tubular part and the expandable sleeve; an aperture ( 11 ) in the tubular part for letting fluid into the annular barrier space to expand the sleeve; and an activatable shut-off valve ( 14 ) having an open and a closed position and arranged in the aperture, wherein the annular barrier further comprises a detection device ( 20 ) for detecting when the expandable sleeve has been expanded into a contact position, and wherein the detection device is adapted to provide a signal to activate the shut-off valve to bring the shut-off valve from the open to the closed position when detecting that the expandable sleeve is in the contact position. Furthermore, the invention relates to a downhole system comprising a plurality of annular barriers according to the invention and to a method for expanding an annular barrier.

Downhole stroking tool

A downhole stroking tool (1) comprising a housing (2), a first chamber (3), a first tool part (4) comprising a pump unit (5) providing pressurised fluid to the chamber, a shaft (6) penetrating the chamber, and a first piston (7) dividing the first chamber into a first chamber section (8, 8a) and a second chamber section (9, 9b). The piston is connected to or forms part of the housing which forms part of a second tool part (10) and is slidable in relation to the shaft so that the housing moves in relation to the shaft, the shaft being stationary in relation to the pump unit during pressurisation of the first or the second chamber section, thereby generating a pressure on the piston, wherein the shaft is fixedly connected with the first tool part, and wherein the housing is slidable in relation to the first tool part and overlaps the first tool part.

Torque member

The present invention relates to a downhole tool extending in a longitudinal direction, comprising a tool housing; an arm assembly movable between a retracted position and a projecting position in relation to the tool housing; an arm activation assembly arranged in the tool housing for moving the arm assembly between the retracted position and the projecting position, the arm activation assembly comprising a piston chamber extending in the longitudinal direction of the downhole tool, a piston member arranged inside the piston chamber and movable in the longitudinal direction of the downhole tool, and wherein the arm activation assembly further comprises a torque member comprising a first fluid channel for supplying hydraulic fluid from a pump to the arm assembly, the torque member being connected with the arm assembly and wherein the torque member is rotated by the movement of the piston member, whereby the arm assembly is moved. Furthermore, the invention relates to a tool string system comprising a plurality of downhole tools, wherein at least one of the downhole tools is a downhole tool according to the invention.

Propelling tool

The present invention relates to a propelling tool (1) enabling a forward drive for operation in a pipeline (3), a casing, a well, or any other cavity. The propelling tool comprises a supply tubing (4) containing the supply fluid, a housing (5) connected to the supply tubing having a supply inlet provided in the rear end of the housing for supplying pressurised supply fluid from the supply tubing, a supply outlet provided in the rear end of the housing for ejection of the supply fluid, a suction inlet provided in the front end for an intake of cavity fluid surrounding the tool into the housing, and a suction outlet provided in the rear end for an outlet of cavity fluid, and a pump (10) for suction of cavity fluid in through the suction inlet and out through the suction outlet. The pump is driven by the pressurised supply fluid for pulling the tool forward in a cavity.

Downhole wireless transfer system

本发明涉及一种用于传输信号和/或电力的井下无线传输系统(1)，包括：生产套管(2)，所述生产套管布置在井孔(3)中，以在生产套管与井孔之间限定出环空(4)，所述生产套管具有内表面(5)和外表面(6)；包括第一超声波收发器(8)的井下工具(7)；连接至所述生产套管的外表面的第二超声波收发器(9)，其中，所述工具包括可突伸机构(10)，所述可突伸机构构造成使所述第一超声波收发器进入与所述生产套管的内表面接触，以使得信号和/或电力能经由生产套管通过第一超声波收发器和第二超声波收发器之间的超声波传输。本发明还涉及一种用于在根据本发明的井下无线传输系统中无线传输信号和/或电力的方法。

Method for releasing cables from a pendant tool and apparatus for practicing the method

A wellbore surveillance system

The present invention relates to wellbore surveillance system for obtaining fluid reservoir information data, such as the position and amount of gas, oil and/or water, while draining hydrocarbons from an oil or gas field via a casing in a wellbore in a formation, the casing having a vertical part near a top of the casing and an inner face, the system comprising a first sensor for measuring a content of gas, oil and/or water in the formation, and a second sensor for measuring a content of gas, oil and/or water in the formation.

wireless downhole unit

Blowout preventer and launcher system

The present invention relates to a blowout preventer for being mounted on a well head, comprising a plurality of valves arranged in fluid communication with each other, connected and forming a tubular pipe. Furthermore, the invention relates to a launcher system, a well intervention module, a well intervention system and a well system.

Downhole mapping system

A downhole mapping system (100) for identifying completion components (33) having an inner surface (74) in a casing in a completion, comprising: - a magnetic sensor tool (1) having a longitudinal tool axis and comprising: - a detecting unit (2) comprising: - a first magnet (4) for generating a magnetic field, and - a first sensor (5) arranged in a first plane (7) and at a first distance (di) from the first magnet, for detecting changes in the magnetic field, the sensor (5) detecting changes in the magnitude and/or direction of the magnetic field producing measured data of a profile of the casing, wherein the downhole mapping system further comprises: - a reference database (34) comprising magnetic reference data of completion components, and - a processor (35) comparing a set of the measured data with reference data from the database (34) for identifying a substantially matching set of data representing a completion component stored in the reference database, wherein the system further comprises a component scanning unit (53) for scanning the inner surface for identifying a component and storing the data representing the component in the database.

Drilling head for reboring a stuck valve

The present invention relates to a drilling head (2) for reboring a stuck valve (35) or drilling into the formation downhole (36). The invention furthermore relates to a drilling tool (1) comprising the drilling head and a driving unit (9). The drilling head comprises a hole saw (28) beside a drill bit for cutting out a piece (37) from the stuck valve. Furthermore, the invention relates to a drilling system comprising the drilling tool and a driving tool for moving the drilling tool downhole; a method of drilling; and a use of the drilling head.

Torque member.

La presente invención se relaciona con una herramienta del fondo de la perforación que se extiende en una dirección longitudinal, que comprende un alojamiento de herramienta; un montaje de brazo movible entre una posición retraída y una posición proyectada en relación con el alojamiento de herramienta; un montaje de activación de brazo dispuesto en el alojamiento de herramienta para mover el montaje de brazo entre la posición retraída y la posición proyectada, el montaje de activación de brazo comprende una cámara de pistón que se extiende en la dirección longitudinal de la herramienta del fondo de la perforación, un miembro de pistón dispuesto dentro de la cámara de pistón y movible en la dirección longitudinal de la herramienta del fondo de la perforación, y en donde el montaje de activación de brazo adicionalmente comprende un miembro de momento de torsión que comprende un primer canal de fluido para suministrar fluido hidráulico desde una bomba hasta el montaje de brazo, el miembro de momento de torsión está conectado con el montaje de brazo y en donde el miembro de momento de torsión gira por el movimiento del miembro de pistón, con lo cual se mueve el montaje de brazo. Adicionalmente, la invención se relaciona con un sistema de columna de herramientas que comprende una pluralidad de herramientas del fondo de la perforación, en donde por lo menos una de las herramientas del fondo de la perforación es una herramienta del fondo de la perforación de conformidad con la invención.

Downhole sensor system

The present invention relates to a downhole sensor system for measuring a pressure of a fluid downhole in a well, comprising a well tubular structure having an inside and being arranged in a borehole with a wall and an annulus defined between the well tubular structure and the wall of the borehole, a sensor unit having a pressure unit sensor and being arranged in connection with the well tubular structure, the pressure unit sensor being adapted to measure a pressure of the fluid in the inside of the well tubular structure and/or in the annulus, the sensor unit further comprising a power supply and a communication module, a downhole tool comprising a power supply and a communication module for communication with the sensor unit, wherein the downhole tool further comprises a pressure tool sensor adapted to measure a pressure of the fluid inside the well tubular structure substantially opposite the pressure unit sensor for comparison with the pressure measured by the pressure unit sensor. The present invention also relates to a measuring method, calibrating methods and an isolation testing method.

Service panel

The present invention relates to a downhole tool comprising a tool housing for accommodating components of the downhole tool, the tool housing comprising; a first tool housing part having a first end face and a second end face, and an activation unit removably connected with the first tool housing part, the activation unit comprising : a second tool housing part, and a closing member removably connected with the second tool housing part, wherein the second tool housing part and the closing member together constitute a fluid-tight chamber wherein a fluid is retained, the fluid-tight chamber housing mechanical and/or hydraulic and/or electrical components, and wherein the activation unit may be separated from the first tool housing part while the closing member is connected with the second tool housing part. The invention further relates to a downhole system and to a method of performing services of a downhole tool.

Coupling for drill pipes

In an assembly for cylindrical drill pipes made for the transport of different kind of fluids, it is the object of the invention to provide a combined flange assembly, that can combine the functions and can be assembled under low time consumption and at low costs. This object is accomplished in, that the connecting means are axially directed bolts inserted in the outer wall of the drill rod and extending axially past the end of the drill rod into internally threaded blind holes in the next drill rod to be connected to the first drill rod, and that each terminal surface of a drill rod is made with arrangements for at least one coupling means for the transport of different kind of fluids in the drill string.

An annular barrier

The present invention relates to an annular barrier to be expanded in an annulus between a well tubular structure and an inside wall of a borehole downhole. The annular barrier comprises a tubular part for mounting as part of the well tubular structure, an expandable sleeve surrounding the tubular part and having an inner face facing the tubular part, each end of the expandable sleeve being connected with a connection part which is connected with the tubular part, a space between the inner face of the sleeve and the tubular part, and an element arranged in connection with the sleeve, the element having a first part and a second part both of which extend around the inner face, the first part of the element being fastened to the inner face.

Stroker Tool

A stroker tool for providing an axial force in an axial direction of a downhole tool. The stroker tool has a pump, a driving unit for driving the pump, and an axial force generator. The generator has an elongated piston housing having a first and a second end, and a piston provided on a shaft, and the shaft penetrates the housing for transmitting the axial force to another tool. The piston is provided in the piston housing so that the shaft penetrates the piston and each end of the piston housing and divides the housing into a first and a second chamber, and the first and the second chamber are each fluidly connected to the pump via at least one duct so that the pump can pump fluid into one chamber by sucking fluid from the other chamber for moving the piston within the housing, and thereby moving the shaft back and forth.

For the production of the ramp metering of sleeve pipe

本发明涉及一种用于控制流体从套管外部——诸如从储池或中间套管——向套管内的流入的井下流入控制系统。该井下流入控制系统包括：套管，其具有轴向延伸部和具有一壁厚（t）的壁；流入控制阀，其具有壳体、在沿壳体的轴向上的轴向延伸部、以及相对于壳体移动的弹性元件，由此控制流体经阀从壳体的入口向壳体的出口的流入。

Propelling tool

The present invention relates to a propelling tool (1) enabling a forward drive for operation in a pipeline (3), a casing, a well, or any other cavity. The propelling tool comprises a supply tubing (4) containing the supply fluid, a housing (5) connected to the supply tubing having a supply inlet provided in the rear end of the housing for supplying pressurised supply fluid from the supply tubing, a supply outlet provided in the rear end of the housing for ejection of the supply fluid, a suction inlet provided in the front end for an intake of cavity fluid surrounding the tool into the housing, and a suction outlet provided in the rear end for an outlet of cavity fluid, and a pump (10) for suction of cavity fluid in through the suction inlet and out through the suction outlet. The pump is driven by the pressurised supply fluid for pulling the tool forward in a cavity.

Annular barrier system with flow lines

本发明涉及一种通过井管结构(3)与井口(40)连接的环状屏障系统(100)，包括待在该井管结构和套管(20)或井下井眼(5)的内壁(4)之间的环空(2)中膨胀，以在第一区域(8)和第二区域(9)之间提供区域隔离的第一环状屏障(1)和第二环状屏障，每个环状屏障包括：在纵向方向上延伸用于作为所述井管结构的一部分安装的管状部件(6)；环绕所述管状部件且限定出空间(13)的可膨胀套筒(7)；用于使流体进入所述空间以膨胀所述套筒的开口(11)；和将可膨胀套筒与管状部件连接的第一连接件(15)和第二连接件(16)，其中所述第一连接件布置成最接近井口，所述系统还包括将井口与所述开口流体连接用于向开口供应流体以膨胀所述可膨胀套筒的流动管线(17)。此外，本发明涉及一种完井系统和方法。

Downhole visualisation method

The present invention relates to a method of visualising a downhole environment using a downhole visualisation system. The downhole visualisation system comprises a downhole tool string comprising one or more sensors, a downhole data processing means for processing the sensor signals to provide sensor data, an uphole data processing means for uphole processing and visualisation, and a data communication link operable to convey the sensor data from the downhole data processing means to the uphole data processing means, the sensors being capable of generating sensor signals indicative of one or more physical parameters in the downhole environment. The downhole visualisation system further comprises a downhole data buffering means capable of receiving the sensor data from the downhole data processing means and temporarily storing the sensor data in the downhole data buffering means.

Downhole completion system and method

The present invention relates to a downhole completion system for being arranged in a wellbore, comprising several casing sections having a casing length of 10-14 metres mounted as one well tubular metal structure by means of casing collars, wherein a number of the several casing sections each comprises at least three annular barriers each comprising an expandable metal sleeve configured to be expanded to abut the wellbore, the annular barriers of each casing section having a common longitudinal extension of at least 50% of the casing length. The present invention also relates to a downhole method for completing a well having a wellbore.

Blowout preventer and launcher system

The present invention relates to a blowout preventer for being mounted on a well head, comprising a plurality of valves arranged in fluid communication with each other, connected and forming a tubular pipe. Furthermore, the invention relates to a launcher system, a well intervention module, a well intervention system and a well system.

Annular barrier system with flow lines

The present invention relates to an annular barrier system (100) connected with a well head (40) via a well tubular structure (3), comprising a first annular barrier (1) and a second annular barrier (21) to be expanded in an annulus (2) between the well tubular structure and an inside wall (4) of a casing (20) or a borehole (5) downhole for providing zone isolation between a first zone (8) and a second zone (9), each annular barrier comprising a tubular part (6) extending in a longitudinal direction for mounting as part of the well tubular structure, an expandable sleeve (7) surrounding the tubular part and defining a space (13), an opening (11) for letting fluid into the space to expand the sleeve, and a first connection part (15) and a second connection part (16) connecting the expandable sleeve with the tubular part, and wherein the first connection part is arranged nearest to the well head, the system further comprising a flow line (17) fluidly connecting the well head with the opening for supplying fluid to the opening for expanding the expandable sleeve. Furthermore, the present invention relates to a well completion system and method.

Setting tool

The present invention relates to a release device ( 10 ) for releasably connecting a downhole object ( 80 ), such as a running tool or a plug, to a setting tool, the release device extending between a proximal end ( 10 a ) adapted to be coupled to the setting tool and a distal end ( 10 b ) adapted to be coupled to the downhole object, the release device comprising a base element ( 16 ) extending in a longitudinal direction and a connecting element arranged in continuation of the base element, the connecting element ( 11 ) constituting the distal end of the release device and being adapted to be coupled to the downhole object, wherein the connecting element is releasably coupled to the base element by an activatable release mechanism ( 60 ). Further, the invention relates to a downhole setting tool for setting an object in a wellbore and to a method for disconnecting a downhole object.

Hydraulic assembly

The present invention relates to a downhole tool, comprising a hydraulic assembly, an arm assembly, the arm assembly comprising a wheel, a hydraulic motor for rotating the wheel, thereby driving the downhole tool in a forward direction, and a hydraulic pump unit for simultaneous generation of a first and a second pressurized fluid, characterized in that the arm assembly is movable between a retracted position and a projecting position in relation to the tool housing, and the downhole tool furthermore comprises an arm activation assembly for moving the arm assembly between the retracted position and the projecting position, and the hydraulic motor drives the downhole tool in the forward direction when the arm assembly is in the projecting position, the arm activation assembly being in fluid connection with the first pressurized fluid and the hydraulic motor being in fluid connection with the second pressurized fluid, a hydraulic control block for controlling the pressure of the first pressurized fluid having a first pressure and controlling a second pressure of the second pressurized fluid, and a hydraulic control block comprising a first sequential valve for controlling a sequence of retraction of the arm assembly, a projection of the arm assembly and a rotation of the wheel, wherein the sequential valve is fluidly connected with one of the fluids and changes between an open and a closed position based upon the pressure of the other fluid. Furthermore, the present invention relates to a method of controlling a projection of an arm assembly of a driving unit of a downhole tool and to a downhole system.

Pressure integrity testing system

arm assembly

Downhole driving unit having a hydraulic motor with a planetary gearing system

The present invention relates to a downhole driving unit (11) for insertion into a well, comprising a driving unit housing (51), a hydraulic motor (23) comprising a hydraulic motor housing (93), a wheel assembly (90) comprising a stationary part (91) and a rotational part (92), the stationary part being connected with the driving unit housing and being rotatably connected with a rotational part, the wheel assembly comprising a wheel ring (99) for contacting an inner wall in the well and connected with or forming part of the rotational part. The wheel assembly further comprises the hydraulic motor (23) so that the stationary part and the rotational part constitute the hydraulic motor housing, the hydraulic motor comprising a rotatable section (84) connected with the rotational part for rotating part of the wheel assembly. Furthermore, the wheel assembly comprises a planetary gearing system (95) comprised in the hydraulic motor housing and the hydraulic motor comprises a rotatable section driving the wheel ring through the planetary gearing system. The invention furthermore relates to a downhole system comprising the driving unit and to use of such driving unit.

Blowout preventer and well intervention tool

The present invention relates to a blowout preventer (1) for being mounted on a well head (2), comprising a plurality of valves (3,4) arranged in fluid communication with each other, connected and forming a tubular pipe enclosing a cavity (10) being in fluid communication with the well head when the blowout preventer is mounted onto the well head and at least one plug (37) in the well head has been removed, wherein the blowout preventer further comprises a chamber (6) and a piston (7) arranged inside the chamber dividing the chamber into a first chamber part (8) and a second chamber part (9), the first chamber part being in fluid communication with the cavity and the second chamber part being filled with a compressible fluid, such as gas. Furthermore, the invention relates to a well intervention tool (100) and a well intervention system (200).

An electrical power distribution method for a wireline tool string downhole

The present invention relates to an electrical power distribution method for distributing power between two or more operating units of a wireline tool string downhole performing at least one operation. The electrical power distribution method comprises the steps of recording information (10) indicative of at least one operating condition (15) using one or more sensors comprised in the tool string, comparing the recorded information (20) to a set of predefined intervals (25) of the at least one operating condition (15), defining a power distribution (30) between the two or more operating units based on the comparison of the recorded information (20) and a predefined interval (25) of the at least one operating condition, classifying the set of predetermined intervals (27) in order to ensure a safe operation, such as classifying whether different operating units are classified as no risk, moderate risk or high risk, and controlling the electrical power distribution (40) of the operating units based on the definition of the power distribution and the classification of the set of predetermined intervals. Furthermore, the present invention relates to a wireline system for carrying out the method according to the invention.

Pulling tool.

La presente invención se relaciona con una herramienta de tracción para asegurarse a un objeto, tal como un tapón, de fondo de perforación en un barreno de pozo. La herramienta de tracción comprende un elemento de base que se extiende en una dirección longitudinal a partir de un extremo proximal adaptado para conectarse a una herramienta de línea de acero hacia un extremo distal adaptado para acoplarse al objeto, y un mecanismo de seguro que rodea al elemento de base y es movible en la dirección longitudinal entre una posición desactivada y una posición activada, que comprende una manga de pistón, un elemento de llave para asegurarse al objeto del fondo de la perforación, el elemento de llave es recibido de manera deslizante dentro de la manga de pistón y se extiende a partir de un extremo de la manga de pistón hacia el extremo distal del elemento de base, y un muelle de pistón que empuja a la manga de pistón en la dirección longitudinal hacia el extremo proximal del elemento de base. Además, la presente invención se relaciona con un sistema de recuperación del fondo de una perforación para arrastrar un objeto en un barreno de pozo y con un método para conectar y desconectar dicho sistema de recuperación a un objeto del fondo de la perforación.

adjustment tool

resumo patente de invenção: "ferramenta de ajuste". a presente invenção refere-se a um dispositivo de liberação (10) para conectar de forma liberável um objeto de fundo de poço (80), tal como uma ferramenta de assentamento ou um tampão, a uma ferramenta de ajuste, o dispositivo de liberação estendendo-se entre uma extremidade proximal (10a) adaptada para ser acoplada à ferramenta de ajuste e uma extremidade distal (10b) adaptada para ser acoplada ao objeto de fundo de poço, o dispositivo de liberação compreendendo um elemento de base (16) estendendo-se em uma direção longitudinal e um elemento de conexão disposto em continuação ao elemento de base, o elemento de conexão (11) constituindo a extremidade distal do dispositivo de liberação e sendo adaptado para ser acoplado ao objeto de fundo de poço, em que o elemento de conexão é acoplado de forma liberável ao elemento de base por um mecanismo de liberação ativável (60). além disso, a invenção refere-se a uma ferramenta de ajuste de fundo de poço para ajustar um objeto em um fundo de poço e a um método para desconectar um objeto de fundo de poço. 4/6 1/6 Patent Summary: "Adjustment Tool". The present invention relates to a release device (10) for releasably connecting a downhole object (80), such as a seating tool or a plug, to an adjustment tool, the release device extending between a proximal end (10a) adapted to be coupled to the adjusting tool and a distal end (10b) adapted to be coupled to the wellbore object, the release device comprising a base member (16) extending in a longitudinal direction and a connecting element disposed in continuation with the base element, the connecting element (11) constituting the distal end of the release device and being adapted to be coupled to the downhole object, wherein the The connection is releasably coupled to the base element by an activatable release mechanism (60). further, the invention relates to a downhole adjustment tool for fitting an object into a ...

Fracturing method using in situ fluid

The present invention relates to a fracturing method for providing fractures in a formation downhole for optimising hydro-carbon production, such as gas or shale gas production, in a well having a well tubular metal structure comprising several self-closing flow assemblies, each self-closing flow assembly comprising a sleeve which is movable along a longitudinal axis of the well tubular metal structure for opening or closing a port in the well tubular metal structure. The method comprises providing fracturing fluid derived from in situ hydro-carbons; submerging an activation device into the well tubular metal structure; pressurising the well tubular metal structure by means of the fracturing fluid derived from in situ hydro-carbons for moving the activation device towards a first self-closing flow assembly; engaging the sleeve of the first self-closing flow assembly by means of the activation device; further pressurising the well tubular metal structure by means of the fracturing fluid derived from in situ hydro- carbons for moving the sleeve of the first self-closing flow assembly and thereby opening the port; injecting the fracturing fluid derived from in situ hydr-carbons through the port of the first self-closing flow assembly for providing fractures in the formation; decreasing a pressure of the fracturing fluid by 0.5-20% for releasing the activation device from the first self-closing flow assembly, thereby closing the port; and moving the activation device by means of pressurised fracturing fluid for engaging a second self-closing flow assembly.