In one embodiment, a top drive system includes a quill; a motor operable to rotate the quill; a gripper operable to engage a joint of casing; a connector bi-directionally rotationally coupled to the quill and the gripper and longitudinally coupled to the gripper; and a compensator longitudinally coupled to the quill and the connector. The compensator is operable to allow relative longitudinal movement between the connector and the quill.
申请公布号
US8210268(B2)
申请公布日期
2012.07.03
申请号
US20080334193
申请日期
2008.12.12
申请人
HEIDECKE KARSTEN;RIALS JOSEPH ROSS;FISHER RALEIGH;OLSTAD DELANEY MICHAEL;WEATHERFORD/LAMB, INC.
发明人
HEIDECKE KARSTEN;RIALS JOSEPH ROSS;FISHER RALEIGH;OLSTAD DELANEY MICHAEL