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发明名称
Apparatus and method for adjusting the azimut of the trajectory of a rotary drilling tool.
摘要
申请公布号
EP0456526(B1)
申请公布日期
1994.05.18
申请号
EP19910400524
申请日期
1991.02.26
申请人
INSTITUT FRANCAIS DU PETROLE
发明人
BOULET, JEAN;MORIN, PIERRE
分类号
E21B7/06;E21B7/08;E21B23/00;(IPC1-7):E21B7/06
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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