<p>A steering tool for use in drilling a borehole, including a tubular housing, a tool actuating device movably supported within the housing, a plurality of hydraulically actuated steering devices circumferentially spaced about the housing, and a hydraulic control system interposed between the tool actuating device and the steering devices for converting an actuating movement of the tool actuating device to independent actuation of the steering devices.</p>
申请公布号
EP2007964(A1)
申请公布日期
2008.12.31
申请号
EP20070719491
申请日期
2007.04.04
申请人
HALLIBURTON ENERGY SERVICES, INC.
发明人
KIRKHOPE, KENNEDY;RIEDER, PAUL;YUNG, LISA;HAY, RICHARD, T.;CRASE, GARY, M.