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发明名称
MONITORING DRILLING MUD CIRCULATION
摘要
申请公布号
GB8705503(D0)
申请公布日期
1987.04.15
申请号
GB19870005503
申请日期
1987.03.09
申请人
FOREX NEPTUNE SA
发明人
分类号
E21B21/08;E21B47/10;E21B49/00;G01N30/02
主分类号
E21B21/08
代理机构
代理人
主权项
地址
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