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发明名称
Method
摘要
申请公布号
GB0320979(D0)
申请公布日期
2003.10.08
申请号
GB20030020979
申请日期
2003.09.08
申请人
BP EXPLORATION OPERATING COMPANY LIMITED
发明人
分类号
E21B7/20;E21B33/10;E21B43/10
主分类号
E21B7/20
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