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发明名称
Verfahren und Vorrichtung zum Abdichten der Stoßstelle zwischen einem Hauptbohrloch und einem Zweigbohrloch
摘要
申请公布号
DE4393857(C2)
申请公布日期
1999.02.18
申请号
DE19934393857
申请日期
1993.08.06
申请人
BAKER-HUGHES INC., HOUSTON, TEX., US
发明人
MCNAIR, ROBERT J., THE WOODLANDS, TEX., US;BANGERT, DANIEL S., KINGWOOD, TEX., US
分类号
E21B7/06;E21B7/08;E21B33/14;E21B41/00;E21B43/10;(IPC1-7):E21B7/08
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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