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发明名称
APPARATUS FOR VIBRATING A PIPE STRING IN A BOREHOLE
摘要
申请公布号
EP0245892(A3)
申请公布日期
1988.11.23
申请号
EP19870200739
申请日期
1987.04.16
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
发明人
WORRAL, ROBERT NICHOLAS;STULEMEIJER, IVO PETRUS JOZEF MARIA
分类号
E21B4/02;E21B4/10;E21B7/24;E21B31/00;E21B31/113;E21B43/04;(IPC1-7):E21B7/24
主分类号
E21B4/02
代理机构
代理人
主权项
地址
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