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.

A device is provided for pumping fluid from a wellbore up to surface. The device includes a stator unit, a rotor unit run within the stator unit on a rod string, the rotor unit and the stator unit engaging with one another to form an annular space therebetween for passage of fluid. An upstream check valve on the rod string uphole of the rotor unit is moveable from an open position in which fluid is passable through the annular space, and a closed position in which fluid passage through the annular space is prevented. A hollow rod section extends through the rod string in fluid communication with the annular space both downstream and upstream of the upstream check valve, for entry of fluid into a downhole end of the hollow rod section, passage of fluid upstream therefrom and exit of fluids from an uphole end of the hollow rod section, back into the annular space. A method is further provided for pumping fluid from a wellbore after shutdown.

The present invention relates to a downhole tool for projecting a projectable element downhole in order for the tool to perform an operation in a well, comprising a tool body having a tool outer diameter and a longitudinal extension, a radial bore extending in a radial direction perpendicular to the longitudinal extension, the radial bore having a first bore part having a first inner diameter and a second bore part having a second inner diameter being larger than the first inner diameter, a projectable element arranged and forming a piston in the radial bore, the projectable element having an open first end and a closed second end, the projectable element having a retracted position and a projected position where the second end is projected from the first bore part, the projectable element comprising at the second end a first element part having a first outer diameter corresponding to the first inner diameter and a second element part having a second outer diameter corresponding to the second inner diameter, in the retracted position the projectable element and the second bore part define an annular cavity closed by the second element part, a hollow base part having an open end and a closed end, the open end extending into the open first end of the projectable element forming a chamber therebetween, the open end of the hollow base part having an outer diameter which corresponds to an inner diameter of the projectable element, at least one spring element arranged in the chamber and connected to the closed first end of the projectable element and to the closed end of the hollow base part for retraction of the projectable element, a pump configured to pump fluid into the chamber via a fluid channel to move the projectable element into the projected position, wherein the annular cavity is filled with fluid which leaves the annular cavity as the projectable element change to the projected position minimising the annular cavity. The present invention also relates to a downhole tool string comprising the downhole tool and a driving unit for propelling the tool string forward in the well.

A tool and a method are for at least one of gripping, expanding, and penetrating a wall of a bore. The tool has a first tool part and a second tool part arranged axially movable relative to each other. The first tool part has a solid wedge, whereas the second tool part has at least one wedge arm. The first tool part further has at least one influencing portion configured to be radially movable upon contact with the at least one wedge arm of the second tool part. The at least one wedge arm is configured to be moved axially along the solid wedge so as to be forced radially outwards and thus push the at least one influencing portion radially outwards.

A technique facilitates control over a downhole well operation. The technique utilizes an electronic control system for controlling actuation of a downhole application-specific attachment. According to an embodiment, the system comprises a universal actuator module which may be selectively combined with a variety of application-specific attachments, e.g. well tools. The universal actuator module is electrically powered via, for example, electricity supplied to drive an electric motor which, in turn, may be used to drive a hydraulic pump or other type of mechanical device. Additionally, a given application-specific attachment can be readily interchanged with other application-specific attachments (e.g. well tools) for performing a desired downhole operation or operations.

Systems and methods of the present disclosure relate to protecting a control line as it passes through a junction in a downhole environment. An ETJ deployment tool (ETJDT) comprises a tool body comprising a central bore; at least one first component and at least one second component, each component operable to extend and retract laterally from the tool body, wherein the at least one second component is disposed at an axial distance from the at least one first component along the tool body; a member disposed within the central bore and operable to move forward upon receiving fluid; and a spring disposed axially between a portion of the member and the at least one second component.

A satellite launcher having a body comprising a planar surface and an axial bore; a plurality of satellite tubes, each satellite tube for releasably retaining a satellite and having an open end for facing the planar surface; a first and a second track system, each comprising: a track extending along the planar surface through the axial bore with a track opening at the axial bore, a magazine slideably attached to the track, the magazine for detachably retaining satellite tubes, and a drive system for moving the first magazine along the first track. The track of the second track system angularly offset from the track of the first track system relative to the axial bore, the second track defining a second track opening at the axial bore. When one of the satellite tubes is aligned with the axial bore, the satellite contained therein is free to drop out.

A downhole tool, such an interval control valve, for use in a well has multiple motors and two drive assemblies to displace a yoke. A member, such as a sliding sleeve, of the downhole tool is connected to the yoke and can be actuated in response to the displacement of the yoke. The drive assemblies include first and second rotatable screws, and the yoke is disposed on the screws. Each motor can produce drive to rotate a respective screw. A respective gear is rotatable in association with at least the rotation of its associated screw. An intermediate gear is engaged between these two gears. The intermediate gear interconnects the rotation of the two screws forcing them to rotate at the same speed. Likewise, the intermediate gear balances the drive of the motors forcing the two screws to rotate at the same speed.

A downhole double-acting positive displacement pump has a housing with a first end 1 and a second end, the housing having a pump inlet, a pump outlet arranged closer to the second end, a first chamber arranged in the housing and having a first outlet in fluid communication with the pump outlet, a first piston movable in the first chamber for pressing fluid out of the pump outlet, and a drive to reciprocate the first piston. The first piston divides the first chamber into a first and second chamber parts, the first chamber part having the first outlet and a first inlet, a first valve being arranged at the first outlet, a second valve being arranged in the first inlet. The second chamber part has a second outlet in fluid communication with the pump outlet and a second inlet, a third valve being arranged in the second outlet, and a fourth valve being arranged in the second inlet. The downhole pump further has a control unit for controlling an output of the drive into the movement of the first piston in the first direction or the second direction.

An artificial lift assembly and method relating thereto where a sleeve system is disposed above an electrical submersible pump. The sleeve system has a sliding sleeve at least partially carried within a ported case. The sliding sleeve blocks fluid flow through ports in the ported case. The sliding sleeve is restricted from movement relative to the ported case until a first predetermined pressure is applied to the sliding sleeve. Subsequent to the operating the electrical submersible pump, a plug is introduced to the sliding sleeve so as to block fluid flow through the sliding sleeve, Subsequent to introducing the plug, fluid pressure above the plug is increased until the sliding sleeve moves relative to the ported case such that fluid flow is allowed through the ports. Thereafter removing the artificial lift assembly from the wellbore.