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发明名称
Fremgangsmate for a danne et foringsror i et borehull mens man borer borehullet
摘要
申请公布号
NO328541(B1)
申请公布日期
2010.03.15
申请号
NO20000001281
申请日期
2000.03.10
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV
发明人
DUELL ALAN B;COOK ROBERT LANCE;STEWART R BRUCE;RING LEV;HAUT RICHARD CARL;MACK ROBERT DONALD;BRISCO DAVID PAUL
分类号
E21B7/20;E21B29/10;E21B33/14;E21B43/10
主分类号
E21B7/20
代理机构
代理人
主权项
地址
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