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发明名称
ELECTRO-HYDRAULICALLY PRESSURIZED DOWNHOLE VALVE ACTUATOR
摘要
申请公布号
EP1259705(A1)
申请公布日期
2002.11.27
申请号
EP20010916382
申请日期
2001.03.02
申请人
SHELL INTERNATIONALE RESEARCHMAATSCHAPPIJ B.V.
发明人
VINEGAR, HAROLD, J.;BURNETT, ROBERT, REX;SAVAGE, WILLIAM, MOUNTJOY;CARL, FREDERICK, GORDON, JR.
分类号
E21B17/00;E21B34/06;E21B34/08;E21B34/16;E21B43/12;E21B43/14;E21B47/12;H04B5/00;(IPC1-7):E21B34/06;F16K31/06
主分类号
E21B17/00
代理机构
代理人
主权项
地址
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