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发明名称
VERFAHREN ZUR BESTIMMUNG DER POROSITAET EINER UNTERIRDISCHEN FORMATION WAEHREND DES BOHRENS.
摘要
申请公布号
DE68907284(D1)
申请公布日期
1993.07.29
申请号
DE19896007284
申请日期
1989.06.27
申请人
ANADRILL INTERNATIONAL S.A., PANAMA, PA
发明人
CURRY, DAVID, CAMBRIDGE CB3 7SB, GB;SHEPPARD, MICHAEL, MISSOURI CITY TEXAS 77459, GB
分类号
E21B44/00;E21B49/00;(IPC1-7):E21B49/00
主分类号
E21B44/00
代理机构
代理人
主权项
地址
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