Abstract: An anchor device having a tubular body with a longitudinal axis, the tubular body being divided into a first body portion and a second body portion which are interconnected by means of a rigid connection so that movement between the first body portion and second body portion is substantially prevented, the anchor device further comprising an actuator having an actuation part which, by operation of the actuator, moves relative to the body, wherein the anchor device further comprises a first linkage set and second linkage set each of which includes at least one linkage, each linkage comprising a first, second and third link, the second link lying between the first and third links, and being pivotally connected to both, each linkage further comprising means to releasably pivotally connect the first link to the first body portion, and means to releasably pivotally connect the third link to the actuation part, the first and third links of each linkage in the first set being shorter than the first and third links o

Abstract: A wellbore tool and a tool section interconnection fluid coupling includes first and second coupling members arranged to be connected and disconnected relative each other. Both the first and second coupling members are arranged to be in a closed position preventing fluid passage through the fluid coupling, and in an open position allowing fluid passage through the fluid coupling. The first coupling member includes a first cylindrical housing, and a first valve element. The first valve element is movably arranged inside the first cylindrical housing. The cylindrical housing includes a valve seat. The valve element is arranged to push against the valve seat when the first and second coupling members are disconnected. The valve element includes a first support portion between a hollow portion and a seal groove.

Abstract: An anchor device having a tubular body with a longitudinal axis, the tubular body being divided into a first body portion and a second body portion which are interconnected by means of a rigid connection so that movement between the first body portion and second body portion is substantially prevented, the anchor device further comprising an actuator having an actuation part which, by operation of the actuator, moves relative to the body, wherein the anchor device further comprises a first linkage set and second linkage set each of which includes at least one linkage, each linkage comprising a first, second and third link, the second link lying between the first and third links, and being pivotally connected to both, each linkage further comprising means to releasably pivotally connect the first link to the first body portion, and means to releasably pivotally connect the third link to the actuation part, the first and third links of each linkage in the first set being shorter than the first and third links o

Abstract: A well tractor drive section comprising—a drive section body (0) with main central axis (0x), with—first and second drive wheels (10A, 10B) on the outer ends of first and second wheel arms (12A, 12B); inner ends of said wheel arms (12A, 12B) arranged pivotally about first and second transverse axes (8Ax, 8Bx) in first and second transverse-axial wheel arm bearings (14A, 4B) for said wheel arms (12A, 12B) to rotate in a direction away from said main axis (0x) to engage said drive wheels (10A, 10B) with an inner wall of a well; —said first and second transverse-axes (8Ax, 8Bx) being mutually oppositely laterally displaced with a first separation (d1) from said main central axis (0x) in a common perpendicular plane (8P) relative to said main central axis (0x).

Abstract: Hydraulic fluid is from a hydraulic pump to a tool connected to respective first and second ends of a wellbore linear actuator. The actuator has a double acting cylinder with a cylinder head, a cylinder cap opposite the cylinder head, a piston head, and a piston rod. The piston head separates the cylinder into a first chamber and a second chamber, and the piston rod extends out of the second chamber through the cylinder cap. The double acting cylinder has first and second ends, and the double acting cylinder further includes a feed fluid passage between the first and second ends. The feed fluid passage includes a first fluid line through the piston head and the piston rod, the first chamber, and a second fluid line through the cylinder head.

Abstract: A wellbore tool and a tool section interconnection fluid coupling includes first and second coupling members arranged to be connected and disconnected relative each other. Both the first and second coupling members are arranged to be in a closed position preventing fluid passage through the fluid coupling, and in an open position allowing fluid passage through the fluid coupling. The first coupling member includes a first cylindrical housing, and a first valve element. The first valve element is movably arranged inside the first cylindrical housing. The cylindrical housing includes a valve seat. The valve element is arranged to push against the valve seat when the first and second coupling members are disconnected. The valve element includes a first support portion between a hollow portion and a seal groove.

Abstract: Providing hydraulic fluid from a hydraulic pump to a tool connected to respective first and second ends of a wellbore linear actuator and such an actuator. The actuator has a double acting cylinder with a cylinder head, a cylinder cap opposite the cylinder head, a piston head, and a piston rod. The piston head separates the cylinder into a first chamber and a second chamber, and the piston rod extends out of the second chamber through the cylinder cap. The double acting cylinder has first and second ends, and the double acting cylinder further includes a feed fluid passage between the first and second ends, wherein the feed fluid passage includes a first fluid line through the piston head and the piston rod, the first chamber, and a second fluid line through the cylinder head. The double acting cylinder is configured for preventing said piston rod from rotating relative said cylinder bore.

Abstract: Providing hydraulic fluid from a hydraulic pump (64) to a tool (3) connected to respective first and second ends (10a, 10b) of a wellbore linear actuator and such an actuator. Where the actuator has a double acting cylinder (10) with a cylinder head (14), a cylinder cap (15) opposite the cylinder head (14), a piston head (40), and a piston rod (41). The piston head (40) separates the cylinder (10) into a first chamber (12) and a second chamber (13), and the piston rod (41) extends out of the second chamber through the cylinder cap (15). The double acting cylinder (10) has first and second ends (10a, 10b), and the double acting cylinder (10) further comprises a feed fluid passage between the first and second ends (10a, 10b), wherein the feed fluid passage comprises a first fluid line (73) through the piston head (40) and the piston rod (41), the first chamber (12), and a second fluid line (77) through the cylinder head (14).

Abstract: The present invention provides methods and apparatus for treating waste, such as municipal waste via pyrolysis and yielding one or more of heat energy; electrical energy and fuel. In some embodiments, waste feed stock can be municipal waste in black bag form. In some the present invention additionally provides for processing of hundreds of tons of municipal waste each day.

Abstract: The invention is a downhole petroleum well tractor having a main body (0) connectable to an electrical conductor logging cable (5) from a surface high voltage DC power supply (50), characterized by said main body (0) comprising a common HV DC power line (4) provided with high-voltage DC power supplied from said electrical cable (5); two or more HV DC branch power lines (40) from said common HV DC power line (4), each said HV DC branch power line (40) feeding power to a HV motor drive electronic unit (21) for a drive motor (2); each said drive motors (2) driving one or more drive devices (6) for running on and along a wall in a well for moving said tractor; separate HV DC circuit breaker units (8) on each said HV DC branch power line (40), each said HVDC circuit breaker (8) unit comprising control means (82, 86, 88) arranged for monitoring a current (I) on said HV DC branch power line (40) and controlling a HV DC power switch (84) on said HV DC branch power line (40) to break said current (I) if said current (

Abstract: A bending restrictor for a rigid but resilient rod-shaped intervention cable includes a series of pipe sections and articulation sleeves. Each pipe section includes a straight pipe piece with a spherical sector in either end. Each articulation sleeve includes two axially oppositely directed spherical-sector seats for holding about each pipe's spherical sector. The spherical sector seats are arranged in either ends of a central axial passage for the intervention cable. Two guide sheaves each with its sheave groove reside in the articulation sleeve's axial plan is laterally displaced relative to the middle of the axial passage so as for enveloping the axial passage for the intervention cable. The articulation sleeve is provided with two opposite axially directed and flattened pivot funnels, and each pivot funnel is provided with its narrower end in adjacent to each its spherical-sector seat.

Abstract: A fiber composite rod intervention cable includes a central electrical cable portion; a bonding layer; a generally unidirectional carbon fiber composite mantle layer; a protective, balanced braided fiber composite layer. The central electrical cable portion includes a generally central electrical conductor with a first cross-section conductive area; an inner insulation layer on the central electrical conductor; and a coaxial electrical conductor layer having a second cross section conductive area equal to the first cross-section conductive area. The fiber composite rod intervention cable is arranged for being injected into a well from a drum unit via an injection unit at the wellhead and may carry an intervention tool, a logging tool, a well tractor with or without an energy source.

Abstract: A drum unit for an intervention string for a well includes a drum with a drum axis and with a radius, arranged in a structural frame and rotatable by a motor and a tension compensator. The tension compensator includes a guide arch displaceable in a direction generally along the intervention string, orthogonal to the drum axis, using a first force device connected to the structural frame for keeping the intervention string in tension. At least a first end of the guide arch is laterally displaceable in a direction generally orthogonal to the intervention string, parallel with the drum axis. The intervention string runs between the guide arch to or from the first end to the drum. The intervention string runs via a second, opposite end of the guide arch via a second, fixed guide at the structural frame, directly or indirectly to or from the well.

Abstract: A fibre composite rod fishing tool includes a ring base with an axis and provided with peripherally arranged, axially extending radially resilient arms with slips with a common axial bore being tapered-off towards a rod receiving aperture opposite of said ring base, said common axial bore provided with teeth of common radial cutting depth, said teeth's engaging edge having the tapering off of the common axial bore, so as for the outer set of teeth's engaging edge to be most blunt, and each consecutive set of teeth's engaging edge extending higher and being sharper inwards toward the common axis, as counted in the direction away from said rod receiving aperture.

Abstract: A petroleum well injection system is provided for an intervention cable with a well tool ran into or out of a well during a well operation. The system includes a blow out valve BOP connected to a well head at a well, a lock chamber at the BOP arranged to contain the well tool before and after the well operation, an injector for the intervention cable, with drive belts driven by an electric motor, and a sensor for measuring the injector force or the tension that the drive belts applies to the intervention cable, a guide arch at the injector, wherein the intervention cable runs taut over the guide arch to a first end of the closed bending restrictor channels, a guide arch load cell arranged to measure the backward tension between an intervention cable the first end of the bending restrictor channel, and wherein the other end of the bending restrictor channel is connected to a drum frame with a motor running a drum for the intervention cable.

Abstract: The present invention provides methods and apparatus for treating waste, such as municipal waste via pyrolysis and yielding one or more of heat energy, electrical energy and fuel. In some embodiments, waste feed stock can be municipal waste in black bag form. In some the present invention additionally provides for processing of thousands of tons of municipal waste each day.

Abstract: An apparatus for gripping a support member is described. The apparatus comprises a tubular clamp, the tubular clamp defining a throughbore adapted to receive a support member therethrough, a first apparatus member adapted to engage a first portion of an external surface of the tubular clamp, and a second apparatus member adapted to engage a second portion of the external surface of the tubular clamp. Relative movement of the first apparatus member with respect to the tubular damp in a first direction results in a deflection of a section of a first end of the tubular clamp into the clamp throughbore and relative movement of the second apparatus member in a second direction, opposite the first direction, with respect to the tubular clamp results in a deflection of a section of a second end of the tubular clamp into the clamp throughbore.

Abstract: An injector head for feeding a tool string support member downhole is described. The injector head includes a first gripping device and a second gripping device. The first and second gripping devices are adapted to grip a tool string support member passing through an injector head passageway. The injector head further includes an actuator movable between a first position and a second position wherein, movement of the actuator between the first and second positions moves at least a portion of both of the first and second gripping devices towards or away from a passageway longitudinal axis.

Abstract: A petroleum well injection system is provided for an intervention cable with a well tool ran into or out of a well during a well operation. The system includes a blow out valve BOP connected to a well head at a well, a lock chamber at the BOP arranged to contain the well tool before and after the well operation, an injector for the intervention cable, with drive belts driven by an electric motor, and a sensor for measuring the injector force or the tension that the drive belts applies to the intervention cable, a guide arch at the injector, wherein the intervention cable runs taut over the guide arch to a first end of the closed bending restrictor channels, a guide arch load cell arranged to measure the backward tension between an intervention cable the first end of the bending restrictor channel, and wherein the other end of the bending restrictor channel is connected to a drum frame with a motor running a drum for the intervention cable.

Abstract: A fibre composite rod fishing tool includes a ring base with an axis and provided with peripherally arranged, axially extending radially resilient arms with slips with a common axial bore being tapered-off towards a rod receiving aperture opposite of said ring base, said common axial bore provided with teeth of common radial cutting depth, said teeth's engaging edge having the tapering off of the common axial bore, so as for the outer set of teeth's engaging edge to be most blunt, and each consecutive set of teeth's engaging edge extending higher and being sharper inwards toward the common axis, as counted in the direction away from said rod receiving aperture.