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发明名称
VERFAHREN UND VORRICHTUNG ZUM AUSKLEIDEN EINER BOHRLOCHSWAND.
摘要
申请公布号
DE3687166(D1)
申请公布日期
1993.01.07
申请号
DE19863687166
申请日期
1986.12.17
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V., DEN HAAG/S'GRAVENHAGE, NL
发明人
WORRAL, ROBERT NICHOLAS;STEWART, ROBERT BRUCE, NL-2288 GD RIJSWIJK, NL
分类号
E21B7/20;E21B33/138;(IPC1-7):E21B33/138
主分类号
E21B7/20
代理机构
代理人
主权项
地址
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