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发明名称
DOWNHOLE PULSER
摘要
申请公布号
EP1234099(A1)
申请公布日期
2002.08.28
申请号
EP20000989923
申请日期
2000.11.28
申请人
SHELL INTERNATIONALE RESEARCHMAATSCHAPPIJ B.V.
发明人
BRAITHWAITE, STEPHEN, RICHARD;HEIJNEN, WILHELMUS, HUBERTUS, PAULUS, MARIA
分类号
E21B4/06;E21B28/00;E21B41/00;E21B43/00;E21B43/16;(IPC1-7):E21B43/00
主分类号
E21B4/06
代理机构
代理人
主权项
地址
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