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发明名称
Steerable rotary drilling system
摘要
申请公布号
EP0728910(A3)
申请公布日期
1997.08.06
申请号
EP19960300972
申请日期
1996.02.13
申请人
CAMCO DRILLING GROUP LIMITED
发明人
BARR, JOHN D.;CLEGG, JOHN M.;MOTION, WILLIAM C.
分类号
E21B7/06;(IPC1-7):E21B7/04
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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