Patent ID: 9169634
Filing Date: 2015-10-27
Classification: A63F,E04B,E21B,Y10T

Abstract:
1. A reversibly expandable structure for transferring a force to a body in a wellbore, comprising: an enclosed mechanical linkage including a plurality of pivotally joined kinematics modules reversibly expandable between expanded and collapsed configurations; an actuator coupled with at least one of the plurality of pivotally joined kinematics modules, the actuator being configured to provide an actuation force which varies a diameter of the enclosed mechanical linkage and adjusts the at least one of the plurality of pivotally joined kinematics modules between open and closed configurations, adjustment of the at least one pivotally joined kinematics module inducing adjustment of the enclosed mechanical linkage between expanded and collapsed configurations, wherein variation of the diameter of the enclosed mechanical linkage produces a force acting upon the body in the wellbore; and wherein the expanded configuration is a hollow closed loop.