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发明名称
Fremgangsmåte for boring av et borehull i en underjordisk formasjon
摘要
申请公布号
NO944721(A)
申请公布日期
1994.12.07
申请号
NO19940004721
申请日期
1994.12.07
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV
发明人
WORRALL, ROBERT NICHOLAS;CHOATE, PAUL ROGERSON;LOHBECK, WILHELMUS CHRISTIANUS MARIA;DONNELLY, MARTIN
分类号
E21B7/20;E21B29/10;E21B33/14;E21B43/10;(IPC1-7):E21B29/00
主分类号
E21B7/20
代理机构
代理人
主权项
地址
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