发明名称 AN APPARATUS FOR FACILITATING THE CONNECTION OF TUBULARS USING A TOP DRIVE
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, said body (2; 102) comprising at least one gripping element (5; 105) radially displaceable by hydraulic or pneumatic fluid to drivingly engage said tubular (30; 110) to permit a screw connection between said tubular and a further tubular to be tightened to the required torque.
申请公布号 WO0019058(A1) 申请公布日期 2000.04.06
申请号 WO1999GB03014 申请日期 1999.09.27
申请人 WEATHERFORD/LAMB, INC.;APPLETON, ROBERT, PATRICK 发明人 APPLETON, ROBERT, PATRICK
分类号 E21B19/06;E21B19/10;(IPC1-7):E21B19/06 主分类号 E21B19/06
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