发明名称 Apparatus for facilitating the connection of tubulars using a top drive
摘要 A method and apparatus for facilitating the connection of tubulars using a top drive is provided. In one aspect, a body is connectable to said top drive. The body comprises at least one gripping element radially displaceable by hydraulic or pneumatic fluid to drivingly engage a tubular to permit a screw connection between said tubular and a further tubular to be tightened to the required torque.
申请公布号 US2005051343(A1) 申请公布日期 2005.03.10
申请号 US20040967387 申请日期 2004.10.18
申请人 WEATHERFORD/LAMB, INC. 发明人 PIETRAS BERND-GEORG;APPLETON ROBERT PATRICK
分类号 E21B;E21B19/06;E21B19/16;E21B23/04;E21B31/03;E21B33/126;E21B43/10;(IPC1-7):E21B19/22;E21B34/02 主分类号 E21B
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