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发明名称
Two stage downhole drilling fluid filter
摘要
申请公布号
GB2393196(B)
申请公布日期
2007.04.04
申请号
GB20030019896
申请日期
2003.08.26
申请人
SCHLUMBERGER HOLDINGS LIMITED
发明人
GEOFF DOWNTON;CHRISTIAN MENGER;HENRY PHAN
分类号
E21B43/08;E21B7/04;E21B21/00
主分类号
E21B43/08
代理机构
代理人
主权项
地址
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