Abstract

There is described a cable (10) for use in a wellbore, and related methods. In certain embodiments, the cable (10) comprises armour (80), a conductive core (20) for conducting electrical energy along the cable (10), and a plurality of elongate synthetics fibres (40, 50) arranged along the cable (10) in a layer between the conductive core (20) and the armour (80).

IPC Classes  ?

• H01B 7/04 - Flexible cables, conductors, or cords, e.g. trailing cables
• H01B 7/18 - Protection against damage caused by external factors, e.g. sheaths or armouring by wear, mechanical force or pressure

Abstract

This invention relates to a movable collecting device (1) for downhole separation and removal of particulate matter (8) from a petroleum well, the collecting device (1) having a first end portion (11) and a second end portion (12), an exterior and an interior; the collecting device (1) comprising an outer wall (4) extending axially from the first end portion (11) and to the second end portion (12), a portion of the wall (4) surrounding a collecting chamber (5); a nose (2) at the first end portion (11) comprises at least one external inlet (23), the external inlet (23) being in fluid communication with the collecting chamber (5); a drive unit (3) positioned at the second end portion (12); and a means (6) for transporting the particulate matter (8) from the exterior of the collecting device (1) to the interior of the collecting device (1) through the external inlet (23), and a portion of the wall (4) comprises a screen in fluid communication with the collecting chamber (5) and the collecting device's (1) exterior. Use of a screen (40) to form at least a portion of a wall (4) surrounding a collection chamber (5) in a movable collection device (1) is described as well.

IPC Classes  ?

• 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 43/08 - Screens or liners
• E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
• E21B 49/08 - Obtaining fluid samples or testing fluids, in boreholes or wells

Abstract

A method and machinery (2) for operations on, in or through a tubular structure (34) passing through a wellhead (6), wherein the method includes: - positioning a hollow lifting apparatus (12) at the wellhead (6) or at a structure (12) above the wellhead (6); - engaging a releasable lifting frame (38, 40) of the lifting apparatus (12) to the tubular structure (34); and - lifting the tubular structure (34) to provide tension in the tubular structure (18) while operating a well intervention assembly (24) in or through the tubular structure (18).

IPC Classes  ?

• E21B 19/08 - Apparatus for feeding the rods or cablesApparatus for increasing or decreasing the pressure on the drilling toolApparatus for counterbalancing the weight of the rods
• E21B 19/00 - Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrickApparatus for feeding the rods or cables
• E21B 19/083 - Cam, rack or like feed mechanisms
• E21B 19/086 - Apparatus for feeding the rods or cablesApparatus for increasing or decreasing the pressure on the drilling toolApparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder

Abstract

This invention relates to a method and apparatus for retrieving a tubing from a well at least partly filled with a liquid. The tubing has first and second end portions. Method steps include: (a) running a retrieval apparatus using connecting means from a surface into the well, retrieval apparatus including: means for engaging tubing; means for sealing a portion of the bore of tubing; means for injecting a low density fluid into tubing, (b) connecting engagement means to a portion of tubing; (c) activating sealing means to close liquid communication in the bore of tubing between first and second end portions; (d) replacing at least a portion of a volume of liquid defined by sealing means, tubing and second end portion (B-B′) of the tubing by a low density fluid introduced in volume by injection means; and (e) retrieving tubing out of the well using connecting means.

IPC Classes  ?

• E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
• E21B 31/20 - Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
• E21B 31/00 - Fishing for or freeing objects in boreholes or wells
• 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 21/00 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

Abstract

A method for removal of a hydrate plug (7) in a tube (92) in connection with a petroleum well (9) is described. A hydrate plug remover (2) is included having a collecting container (21). The method includes the steps of positioning the hydrate plug remover (2) in a sluice (5); filling the sluice (5) with a hydrate dissolving fluid; filling the collecting container (21) provided with a valve (3) in the lower end portion (20) of the collecting container (21) with hydrate dissolving fluid through the valve (3); pressure testing the sluice (5); displacing the hydrate plug remover (2) from the hydrate plug (7) and letting the hydrate dissolving fluid flow towards the hydrate plug (7) through a circulation gate (22) in the upper end portion (29) of the collecting container (21); leading loosened hydrate from the hydrate plug (7) into the collecting container (21) via the valve (3); and displacing the hydrate plug remover (2) to the sluice (5) where the collecting container (21) is emptied of hydrate through the circulation gate (22) while hydrate dissolving fluid flows into the collection container (21) through the valve (3). A hydrate plug remover for performing the method is also described.

IPC Classes  ?

• F16L 55/00 - Devices or appurtenances for use in, or in connection with, pipes or pipe systems
• E21B 27/02 - Dump bailers, i.e. containers for depositing substances, e.g. cement or acids
• E21B 37/06 - Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting the deposition of paraffins or like substances

Abstract

A junk catcher (2, 2') where the junk catcher (2, 2') is releasable connected to a retrievable bridge plug (4, 4'), the retrievable bridge plug (4, 4') being connectable to a setting tool (6) for the joint deployment of the bridge plug (4, 4') and the junk catcher (2, 2') in a borehole (9) or a tubular in the borehole (9), the setting tool (6) is extending through a fishing neck (12), a catcher tube (14), a flanged section (16), a valve chamber (18), a closable opening (20) and a portion of a setting sleeve (22, 22') of the junk catcher (2, 2'), the valve chamber (18) comprises a valve (50) arranged to close the closable opening (20) after retrieval of the setting tool (6) from the junk catcher (2, 2'), the junk catcher (2, 2') is connected to the bridge plug (4, 4') by at least one shear bolt (27, 38), the bridge plug (4, 4') comprises a plug fishing neck (32, 32') facing the junk catcher (2, 2'), and the bridge plug (4, 4') comprises an equalizing channel (71) in a mandrel (7), the equalizing channel (71) extending from a bull nose (41) of the bridge plug (4, 4'), and where the junk catcher (2, 2') is provided with a closing sleeve (26, 26'), the closing sleeve (26, 26') is connected to the bridge plug (4, 4') by at least one shear bolt (38, 38'), and the closing sleeve (26, 26') seals at least one equalizing port (73) in the mandrel (7) when the bridge plug (4, 4') is set. A method for operating the bridge plug (4, 4') and junk catcher (2, 2') assembly is described as well.

IPC Classes  ?

• 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 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in 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
• E21B 33/134 - Bridging plugs

Abstract

This inventions relates to a stroker device (1) for use in a borehole (2) in the ground. The stroker (1) comprises at least an actuator (6) arranged for displacing a tool (10) in a longitudinal direction of the borehole (2) and grippers (26) arranged to anchor the stroker (1) to the wall (36) of the borehole (2), alternatively to a pipe wall. The stroker (1) is provided with driving wheels (34) or driving belts for propulsion.

IPC Classes  ?

• 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 4/18 - Anchoring or feeding in the borehole
• E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells

Abstract

A method and a device for cleaning an area (48) located inside a restriction (46) by means of a mechanical cleaning tool (1). The restriction (46) having a smaller cross-sectional dimension than the area (48) to be cleaned. The method includes the steps of moving the cleaning tool (1) into or through the restriction (46); moving a mechanical cleaning body (18) radially out into abutment against the area (48) to be cleaned; rotating the cleaning body (18) relative to the area (48) to be cleaned; moving the mechanical cleaning body (18) radially in from the area (48) which has been cleaned; and moving the cleaning tool (1) out from the restriction (46).

IPC Classes  ?

• E21B 37/02 - Scrapers specially adapted therefor
• 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
• B08B 9/043 - 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
• B08B 9/02 - Cleaning pipes or tubes or systems of pipes or tubes

Abstract

A movable collecting device (1) for downhole separation and removal of particulate matter (8) from a petroleum well, the collecting device (1) having a first end portion (11) and a second end portion (12), an exterior and an interior; the collecting device (1) comprising: - an outer wall (4) extending axially from the first end portion (11) and to the second end portion (12), a portion of the wall (4) surrounding a collecting chamber (5); - a nose (2) at the first end portion (11) comprises at least one external inlet (23), the external inlet (23) being in fluid communication with the collecting chamber (5); - a drive unit (3) positioned at the second end portion (12); and - a means (6) for transporting the particulate matter (8) from the exterior of the collecting device (1) to the interior of the collecting device (1) through the external inlet (23), and a portion of the wall (4) comprises a screen in fluid communication with the collecting chamber (5) and the collecting device's (1) exterior. Use of a screen (40) to form at least a portion of a wall (4) surrounding a collection chamber (5) in a movable collection device (1) is described as well.

IPC Classes  ?

• E21B 37/08 - Methods or apparatus for cleaning boreholes or wells cleaning in situ of down-hole filters, screens, or gravel packs
• B01D 35/28 - Strainers not provided for elsewhere
• B07B 1/00 - Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
• 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 43/08 - Screens or liners
• E21B 43/34 - Arrangements for separating materials produced by the well
• E21B 43/38 - Arrangements for separating materials produced by the well in the well

Abstract

A movable collecting device (1) for downhole separation and removal of particulate matter (8) from a petroleum well, the collecting device (1) having a first end portion (11) and a second end portion (12), an exterior and an interior; the collecting device (1) comprising: - an outer wall (4) extending axially from the first end portion (11) and to the second end portion (12), a portion of the wall (4) surrounding a collecting chamber (5); - a nose (2) at the first end portion (11) comprises at least one external inlet (23), the external inlet (23) being in fluid communication with the collecting chamber (5); - a drive unit (3) positioned at the second end portion (12); and - a means (6) for transporting the particulate matter (8) from the exterior of the collecting device (1) to the interior of the collecting device (1) through the external inlet (23), and a portion of the wall (4) comprises a screen in fluid communication with the collecting chamber (5) and the collecting device's (1) exterior. Use of a screen (40) to form at least a portion of a wall (4) surrounding a collection chamber (5) in a movable collection device (1) is described as well.

IPC Classes  ?

• E21B 37/08 - Methods or apparatus for cleaning boreholes or wells cleaning in situ of down-hole filters, screens, or gravel packs
• B01D 35/28 - Strainers not provided for elsewhere
• B07B 1/00 - Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
• 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 43/08 - Screens or liners
• E21B 43/34 - Arrangements for separating materials produced by the well
• E21B 43/38 - Arrangements for separating materials produced by the well in the well

Abstract

An anchor mechanism (1) for use in a well, the anchor mechanism (1) including a housing (2) with a plurality of openings (25); the openings (25) being evenly distributed along the circumference of the housing (2) and each opening (25) being arranged to narrowly house a radially movably slip (3); the slip (3) including first (35) and second (35') end portions, a gripping side (31) facing a well wall, the gripping side (31) being provided with a plurality of teeth (33), an underside (39) facing the opposite direction, two side faces (37) extending from the gripping side (31) to the underside (39) and to two end faces (38); the slip (3) being provided, at its first (35) and second (35') end portions, with a first inclined face (36) and a second inclined face (36') substantially sloping from the end faces (38, 38') and towards the middle portion of the slip (3) on the underside (39); the slip (3) being provided, on its end faces (37), with laterally projecting tongues (30) which have a longitudinal direction parallel to the inclined faces (36, 36'); the slip (3) being provided, on its two side faces (37), with guide portions (34) exhibiting a longitudinal direction perpendicular to the longitudinal direction of the slip (3) and the guide portion (34) complementarily fitting an inward-facing guide (28) in the housing (2); the anchor mechanism (1) further being provided with first and second axially movable slip cones (4, 5), the slip cones (4, 5) being surrounded in a portion of the housing (2); the slip cones (4, 5) being provided with inclined faces (46, 56) which, in their position of application, are arranged to rest against the inclined faces (36, 36') of the slip (3), the slip cones (4, 5) further being provided with a plurality of grooves (40, 50), each groove (40, 50) being arranged to house one tongue (30), and the housing (2) being constituted by a first housing half (21) and a second housing half (22).

IPC Classes  ?

• 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 23/06 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting packers
• E21B 33/129 - PackersPlugs with mechanical slips for hooking into the casing

Abstract

The present invention regards a method and an apparatus for retrieving a tubing (1201) from a well (100) at least partly filled with a liquid (1101), the tubing (1201) having a first end portion (A-A') and a second end portion (B-B'), wherein the method comprising the steps of: - running a retrieval apparatus (1401) using a connecting means (507, 2301, 2401) from a surface and into the well (100), the retrieval apparatus (1401) comprising: - an engagement means (1401) for engaging the tubing (1201); - a sealing means (1404) for sealing a portion of the bore of the tubing (1201); - injection means for injecting a low density fluid into the tubing (1201), - connecting the engagement means (1401) to a portion of the tubing (1201); - activating the sealing means (1404) to close liquid communication in the bore of the tubing between the first end portion (A-A') and the second end portion (B-B'); - replacing at least a portion of a volume of liquid (1101) defined by the sealing means (1404), the tubing (1201) and the second end portion (B-B') of the tubing (1201) by a low density fluid (1501) introduced in said volume by the injection means; and - retrieving the tubing (1201) out of the well (100) using the connecting means (507, 2301, 2401).

IPC Classes  ?

• E21B 31/12 - Grappling tools, e.g. tongs or grabs
• E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
• E21B 31/00 - Fishing for or freeing objects in boreholes or wells
• E21B 33/00 - Sealing or packing boreholes or wells

Abstract

A method for removal of a hydrate plug (7) in a tube (92) in connection with a petroleum well (9) is described, the method comprising: - to provide a hydrate plug remover (2), where the hydrate plug remover (2) comprises a collecting container (21) and where the method further comprises to: - position the hydrate plug remover (2) in a sluice (5); - fill the sluice (5) with a hydrate dissolving fluid; - fill the collecting container (21) which is provided with a valve (3) in the lower end portion (20) of the collecting container (21) with hydrate dissolving fluid through the valve (3); - pressure test the sluice (5); - displace the hydrate plug remover (2) from the hydrate plug (7) and let the hydrate dissolving fluid flow towards the hydrate plug (7) through a circulation gate (22) in the upper end portion (29) of the collecting container (21); - lead loosened hydrate from the hydrate plug (7) into the collecting container (21) via the valve (3); and - displace the hydrate plug remover (2) to the sluice (5) where the collecting container (21) is emptied of hydrate through the circulation gate (22) while hydrate dissolving fluid is flowing into the collecting container (21) through the valve (3). A hydrate plug remover for performing the method is also described.

IPC Classes  ?

• E21B 37/06 - Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting the deposition of paraffins or like substances
• 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
• B08B 9/04 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes

Abstract

A method and a device for cleaning an area (48) located inside a restriction (46) by means of a mechanical cleaning tool (1), the restriction (46) having a smaller cross-sectional dimension than the area (48) to be cleaned, the comprising: - moving the cleaning tool (1) into or through the restriction (46); - moving a mechanical cleaning body (18) radially out into abutment against the area (48) to be cleaned; - rotating the cleaning body (18) relative to the area (48) to be cleaned; - moving the mechanical cleaning body (18) radially in from the area (48) which has been cleaned; and - moving the cleaning tool (1) out from the restriction (46).

IPC Classes  ?

• B08B 9/055 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the cross-section of the pipes, e.g. pigs or moles
• B08B 9/02 - Cleaning pipes or tubes or systems of pipes or tubes
• B08B 9/04 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes
• E21B 37/02 - Scrapers specially adapted therefor

Abstract

A stroker device for use in a borehole in the ground includes an actuator arranged for displacing a tool in a longitudinal direction of the borehole, and grippers arranged to anchor the stroker to the wall of the borehole, alternatively to a pipe wall, wherein the stroker is provided with driving wheels or driving belts for propulsion.

IPC Classes  ?

• E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells

Abstract

A cleaning tool device (1) for a pipe (10), the cleaning tool (1) being moved internally in the pipe (10) while rotating about substantially the center axis (12) of the pipe (10), and the cleaning tool (1) being provided with a leading cleaning body (2) at its free end portion (4), and there being arranged, close behind the free end portion (4), a tool support (6) which is arranged to bear on the internal jacket surface (16) of the pipe (10), the tool support (6) being provided with at least one rotatable support cleaning body (8′, 8″, 8′″ and 8″″).

IPC Classes  ?

• B08B 9/02 - Cleaning pipes or tubes or systems of pipes or tubes

Abstract

A plug device for closing of a pipe bore where the plug comprises an exterior sleeve formed in a flexible material, and a setting mechanism, and where the setting mechanism comprises wedges which between their passive position and their active position are displaced along a curved path.

IPC Classes  ?

• E21B 33/12 - PackersPlugs

Abstract

A method and a device for securing a well during sluicing in of a well tool includes arranging a landing sleeve provided with a barrier valve in a well tubular downstream of a subsurface safety valve; displacing the well tool into the well tubular until a braking nose being connected to the well tool is placed in the landing sleeve; and unlocking the barrier valve by means of a key being positioned on the leading end portion of the well tool.

IPC Classes  ?

• E21B 34/14 - Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools

Abstract

A wireline tractor includes a displacement mechanism and at least one driving wheel positioned on the displacement mechanism so that the driving wheel is held in a biasing manner against a well wall. The displacement mechanism is rotatable or movable between a first position at which the driving wheel bears against the well wall on one side of the wireline tractor, and a second position at which the driving wheel bears against the well wall on the opposite side of the wireline tractor.

IPC Classes  ?

• 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 4/18 - Anchoring or feeding in the borehole

Abstract

A device for a wireline tractor (1) comprising at least one driving wheel (4, 8, 12) positioned on a displacement mechanism (6, 10, 14) connected to the wireline tractor (1), in which the displacement mechanism (6, 10, 14) is arranged so as to hold the driving wheel (4, 8, 12) in a biasing manner against a well wall (18), and wherein the displacement mechanism (6, 10, 14) at least is rotatable or movable between a first position at which the driving wheel (4, 8, 12) bears against the well wall (18) on one side of the wireline tractor, and a second position at which the driving wheel (4, 8, 12) bears against the well wall (18) on the opposite side of the wireline tractor (1).

IPC Classes  ?

• 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 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells