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发明名称
Fremgangsmåde og apparat til at tætne overgangen imellem en lodret brønd og en eller flere vandrette brønde
摘要
申请公布号
DK38794(A)
申请公布日期
1994.06.06
申请号
DK19940000387
申请日期
1994.04.06
申请人
BAKER HUGHES INCORPORATED
发明人
MCNAIR, ROBERT J.;BANGERT, DANIEL S.
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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