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发明名称
Rotary drill bit with rotatably mounted gauge section for bit stabilisation
摘要
申请公布号
EP0707131(A3)
申请公布日期
1996.10.23
申请号
EP19950306939
申请日期
1995.09.29
申请人
CAMCO DRILLING GROUP LIMITED
发明人
NEWTON, ALEX;FULLER, JOHN M.;MURDOCK, ANDREW;SARIK, DANIEL J.
分类号
E21B10/00;E21B10/60;E21B17/10;(IPC1-7):E21B10/56;E21B10/08
主分类号
E21B10/00
代理机构
代理人
主权项
地址
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