Expandable ramp gripper

Details Expandable ramp gripper Expandable ramp gripper

E - Fixed Constructions

21

B

E21B 4/18 (2006.01) E21B 23/00 (2006.01) E21B 23/01 (2006.01)

Patent

CA 2581438

A gripper for use in a downhole tool is provided. The gripper can include an actuator, a toe assembly, and an expandable assembly. The toe assembly can be a leaf- spring like elongate continuous beam. The expandable assembly can be a linkage including a plurality of links. The linkage is coupled to the actuator such that the actuator expands the expandable assembly which in turn expands the toe assembly. In operation, during one stage of expansion radial forces are transmitted to the toe through both interaction of a rolling mechanism on the toe with the expandable assembly and pressure of the linkage assembly directly on an inner surface of the toe.

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