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经营范围
发明名称
Method of curing loss of circulation of a fluid used in drilling a hole in an underground formation
摘要
申请公布号
US3415318(A)
申请公布日期
1968.12.10
申请号
US19670649533
申请日期
1967.06.28
申请人
SHELL OIL COMPANY
发明人
MEIJS FRANCISCUS H.
分类号
E21B21/00
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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