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发明名称
Sealing mechanism for a subterranean well
摘要
申请公布号
GB0506448(D0)
申请公布日期
2005.05.04
申请号
GB20050006448
申请日期
2005.03.31
申请人
SCHLUMBERGER HOLDINGS LIMITED
发明人
分类号
E21B17/00;E21B23/06;E21B33/12;E21B33/128
主分类号
E21B17/00
代理机构
代理人
主权项
地址
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