Apparatus for gripping a tubular on a drilling rig
摘要
A method and apparatus for handling tubular on a drilling rig. The apparatus is adapted for gripping a tubular and may be used with a top drive. The apparatus includes a connection at one end for rotationally fixing the apparatus to the top drive and gripping members at a second end for gripping the tubular. The apparatus has a primary actuator configured to move and hold the gripping members in contact with the tubular and a backup assembly to maintain the gripping member in contact with the tubular. WO 2007/070805 PCT/US2006/061945 118 -115 ,-.120
申请公布号
AU2010202601(B2)
申请公布日期
2013.02.07
申请号
AU20100202601
申请日期
2010.06.22
申请人
WEATHERFORD/LAMB, INC
发明人
ODELL II, ALBERT C.;PIETRAS, BERND-GEORG;GIROUX, RICHARD LEE;LE, TUONG THANH;THOMPSON, GARY;HEIDECKE, KARSTEN;LORENZ, JOERG;BOUTWELL JR., DOYLE FREDERIC;HAYES, MICHAEL