Patent ID: 7240737
Filing Date: 2007-07-10
Classification: E21B

Abstract:
1. A system f or controlling operation of a tool, the system comprising: an actuator for the tool, the actuator including an actuator member which displaces with a piston of the actuator to operate the tool, the actuator piston separating first and second chambers of the actuator; a control system member disposed at a location remote from the actuator, a displacement of the control system member with a control system piston causing a displacement of the actuator member, the control system member displacement being proportional to the actuator member displacement, and the control system piston separating first and second chambers of a control system at the remote location, and the control system piston being exposed to pressure in each of the first and second control system chambers; and a first line providing communication between the control system first chamber and the actuator first chamber, and a second line simultaneously providing communication between the control system second chamber and the actuator second chamber.