Torque anchor

Details Torque anchor Torque anchor

E - Fixed Constructions

21

B

E21B 33/10 (2006.01)

Patent

CA 2159659

A Torque anchor for the purpose of anchoring well equipment within a well conduit. The device anchors the well equipment from rotation in one direction but allows rotation in the other. The device has a body with slips and a driving portion within the slip. The slip has a friction surface which slides against the well conduit. This prevents damage to the gripping teeth or the well conduit. The slip has a gripping teeth portion which engages the well conduit only when the anchor is set. The slip is urged outward by the use of a spring. A portion of the slip is the drive surface which engages the driving portion. This drive surface is such that the perpendicular distance from the drive surface to the outer edge of the gripping teeth increases along the slip in the direction away from the friction surface. The slip has a portion which retains the slip within the anchor and thereby does not require any retaining means. The slip has a portion which abuts against the driving portion to allow rotation in the opposite direction. The anchor is set by rotation and is released by rotation in the opposite direction.

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