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经营范围
发明名称
Control of well annulus pressure
摘要
申请公布号
EP0604134(B1)
申请公布日期
1997.07.23
申请号
EP19930310223
申请日期
1993.12.17
申请人
HALLIBURTON COMPANY
发明人
SCHULTZ, ROGER L.
分类号
E21B34/16;(IPC1-7):E21B34/16
主分类号
E21B34/16
代理机构
代理人
主权项
地址
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