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发明名称
MUD CIRCULATION FOR LITHOSPHERE DRILLING
摘要
申请公布号
EP1060323(A1)
申请公布日期
2000.12.20
申请号
EP19970950521
申请日期
1997.12.24
申请人
WELL ENGINEERING PARTNERS B.V.
发明人
VAN WECHEM, GUSTAAF, LOUIS;BAKKER, THOMAS, WALBURGIS
分类号
E21B21/00;(IPC1-7):E21B21/00
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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