Abstract: 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).

Abstract: The present invention relates to a downhole hydraulic pump for providing fluid pressure during downhole operations, comprising a pump housing, a cam shaft rotatably arranged in the pump housing and having a longitudinal spin axis, the cam shaft comprising a shaft and a cam lobe arranged on the shaft, a radially arranged piston having a housing end and a cam end, a piston housing arranged in the pump housing, an inlet valve arranged in an inlet in the piston housing, an outlet valve arranged in an outlet in the piston housing, and a piston spring arranged in the pump housing for moving the piston away from the piston housing, wherein the piston housing is rotatably connected to the pump housing enabling rotation of the piston housing around a piston housing rotation axis parallel to the longitudinal spin axis of the cam shaft.

Abstract: A wireline tool for sampling/jetting fluid in a well includes a pump with an opening, and a chamber for collecting/jetting fluid, the chamber having first and second ends. The chamber includes first and second pistons dividing the chamber into first, second and third chamber sections. The first and second pistons are attached to respective piston rods, and the rods are supported by respective supports. A first spring is provided between the first piston and its support and another spring is provided between the second piston and its support. When the pump operates, the pistons are forced in one direction, hence activating spring forces of the springs and allowing fluid to flow from one chamber section to another chamber section.

Abstract: 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).

Abstract: 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

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: The present invention relates to a downhole system comprising a driving unit (7) for driving an operational tool (2). 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 comprises a release device (12, 13) for releasing the operational tool and the second part from the first part of the system.