发明名称 Apparatus for attachment to pipe handling arm
摘要 An apparatus for attachment to a pipe handling arm, which apparatus comprises a clamp (3, 4) for gripping a tubular (70), characterised in that said apparatus further comprises means (10) for, in use, aligning said tubular (70) with another tubular (71) prior to connection thereof. The apparatus is attached to a pipe handling arm by lug (11). The clamps have jaws that grip via rollers so that the tubular can be rotated to screw it to the tubular string (71). The jaws are movable along strut (2) by a piston and cylinder (7).
申请公布号 GB2334270(A) 申请公布日期 1999.08.18
申请号 GB19980003115 申请日期 1998.02.14
申请人 * WEATHERFORD/LAMB INC 发明人 JORG * LORENZ
分类号 E21B19/15;E21B19/20;(IPC1-7):E21B19/20 主分类号 E21B19/15
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