Torque member

摘要

A downhole tool extending in a longitudinal direction includes a tool housing; an arm assembly movable between a retracted position and a projecting position in relation to the tool housing; and 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 has a piston chamber extending in the longitudinal direction of the downhole tool, and a piston member arranged inside the piston chamber and movable in the longitudinal direction of the downhole tool. The arm activation assembly further includes a torque member with a first fluid channel for supplying hydraulic fluid from a pump to the arm assembly, the torque member being connected with the arm assembly. The torque member is rotated by the movement of the piston member, whereby the arm assembly is moved.

主权项

1. 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; and 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, anda piston member arranged inside the piston chamber and movable in the longitudinal direction of the downhole tool,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.