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发明名称
WELL DEVIATION DEVICE
摘要
申请公布号
GB2040341(B)
申请公布日期
1982.11.03
申请号
GB19790001968
申请日期
1979.01.19
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV
发明人
分类号
E21B7/04;E21B7/06;E21B7/08;E21B7/20;E21B10/02;(IPC1-7):E21B7/08
主分类号
E21B7/04
代理机构
代理人
主权项
地址
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