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发明名称
摘要
申请公布号
FR2379006(B1)
申请公布日期
1981.10.23
申请号
FR19780002172
申请日期
1978.01.26
申请人
ELF AQUITAINE PRODUCTION STE NAL
发明人
分类号
E21B33/035;E21B33/038;E21B33/04;E21B33/043;E21B33/047;(IPC1-7):16L1/00;21B23/00;21B17/08;16L25/00;21B43/10
主分类号
E21B33/035
代理机构
代理人
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地址
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