| 摘要 |
An apparatus for facilitating the connection of tubulars using a top drive, which apparatus comprises a body (2; 102) connectable to said top drive, sai d body (2; 102) comprising at least one gripping element (5; 105) radially displaceable by hydraulic or pneumatic fluid to drivingly engage said tubula r (30; 110) to permit a screw connection between said tubular and a further tubular to be tightened to the required torque.
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