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发明名称
Offshore operations in wells
摘要
申请公布号
US3369600(A)
申请公布日期
1968.02.20
申请号
US19650511632
申请日期
1965.12.06
申请人
ESSO PRODUCTION RESEARCH COMPANY
发明人
JR. WILLY FRANK BOHLMANN,
分类号
E21B19/09;E21B43/119;E21B47/00
主分类号
E21B19/09
代理机构
代理人
主权项
地址
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