发明名称 A FORCE BALANCING SYSTEM FOR USE WITH A WELL BORE TOOL
摘要 A method and apparatus for a system for use with a well bore tool that is adapted to decouple the weight of the drill string from the operation and utilizes instead hydraulic or pneumatic pressure to advance a drilling tool into a well bore.
申请公布号 WO2009134859(A2) 申请公布日期 2009.11.05
申请号 WO2009US42073 申请日期 2009.04.29
申请人 JAVINS CORPORATION;BUI, HUY, D.;JAVINS, BROOKS, HOWARD;AHLHORN, KENNETH, WAYNE 发明人 BUI, HUY, D.;JAVINS, BROOKS, HOWARD;AHLHORN, KENNETH, WAYNE
分类号 E21B17/00;E21B17/10 主分类号 E21B17/00
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