An actuator for a subterranean tool is releasably retained by a collet. The actuation system features opposing actuation pistons with ports communicating to the tubing. The spaced ports are sequentially straddled for initial setting and a subsequent release using a predetermined applied pressure. The applied pressure overcomes the retaining force of the collet and actuates a one of two opposed pistons to set the tool, which is preferably a liner hanger. Upon shifting the actuation tool to communication to another port leading to an actuating piston pushing in another direction with applied pressure releases the tool and re-latches a retaining collet. The tool can be set, released and repositioned for another cycle in the same trip in the hole.
申请公布号
EP2859174(A1)
申请公布日期
2015.04.15
申请号
EP20130800886
申请日期
2013.05.29
申请人
BAKER HUGHES INCORPORATED
发明人
STINGERIE, JASON, C.;GAMBERTOGLIO, LOUIS, M.;NEVELS, DAVID, L.