发明名称 Overshot tool
摘要 An overshot tool includes a grapple, a torque sub rotationally fixed to the grapple and a deformable member in operable communication with the torque sub. The torque sub is responsive to torsional movement thereof. A method for retrieving a fish with the tool is also included.
申请公布号 US7617867(B2) 申请公布日期 2009.11.17
申请号 US20070713925 申请日期 2007.03.05
申请人 BAKER HUGHES INCORPORATED 发明人 LYNDE GERALD D.;PITMAN MALCOLM DEREK
分类号 E21B31/18 主分类号 E21B31/18
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