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经营范围
发明名称
Detecting outflow or inflow of fluid in a wellbore
摘要
申请公布号
GB2246444(A)
申请公布日期
1992.01.29
申请号
GB19910015855
申请日期
1991.07.23
申请人
* SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
发明人
ROBERT NICHOLAS * WORRALL;JOHANNES HENRICUS GERARDUS * SUREWAARD;PETER * OOSTERLING
分类号
E21B21/00;E21B21/08;E21B47/10;G01F1/00
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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