发明名称 |
WELLBORE INSTRUMENT MODULE HAVING MAGNETIC CLAMP FOR USE IN CASED WELLBORES |
摘要 |
A magnetically clamped wellbore instrument module includes a substantially non-magnetic housing configured to traverse an interior of the wellbore. At least one electromagnet is disposed at a longitudinally spaced apart position along the housing. The at least one electromagnet has a plurality of circumferentially spaced apart contact points that define a diameter greater than a diameter of the housing. The contact points have circumferential spaces therebetween defining a diameter smaller than the diameter defined by the contact points. |
申请公布号 |
EP2294283(A2) |
申请公布日期 |
2011.03.16 |
申请号 |
EP20090763142 |
申请日期 |
2009.05.12 |
申请人 |
SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LTD;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED |
发明人 |
MINTO, JAMES |
分类号 |
G01V1/52;E21B47/01 |
主分类号 |
G01V1/52 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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