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发明名称
METHOD FOR DENSIFYING GROUTING MATERIAL IN DRILL STRING- BOREHOLE ANNULUS OF PRODUCTION WELLS
摘要
申请公布号
RU2077656(C1)
申请公布日期
1997.04.20
申请号
RU19930052970
申请日期
1993.11.22
申请人
KIRPICHENKO BORIS I
发明人
KIRPICHENKO BORIS I
分类号
E21B33/14;(IPC1-7):E21B33/14
主分类号
E21B33/14
代理机构
代理人
主权项
地址
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