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发明名称
DRILL STRING SUB
摘要
申请公布号
GB2135719(A)
申请公布日期
1984.09.05
申请号
GB19840004485
申请日期
1984.02.21
申请人
* EXXON PRODUCTION RESEARCH COMPANY
发明人
ALBERT P * DAVIS;ORIEN MONROE * KNIGHT;JOHN W * STOLTZ
分类号
E21B17/02;(IPC1-7):E21B17/00;E21B47/12
主分类号
E21B17/02
代理机构
代理人
主权项
地址
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