发明名称 |
Method for determining direction to a target formation from a wellbore by analyzing multi-component electromagnetic induction signals |
摘要 |
A method is disclosed for determining a direction of a target formation with respect to an instrument in a wellbore. The target has an electrical conductivity different than earth formations surrounding the wellbore. The method includes inducing time varying electromagnetic fields in the formations surrounding the wellbore. The electromagnetic fields have at least some components along mutually orthogonal directions. Voltages induced by the time varying electromagnetic fields are detected. The detecting is performed to have at least some component along mutually orthogonal directions. The direction of the target is calculated from the detected voltages.
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申请公布号 |
US2004140091(A1) |
申请公布日期 |
2004.07.22 |
申请号 |
US20030345506 |
申请日期 |
2003.01.16 |
申请人 |
GUPTA PRAVIN |
发明人 |
GUPTA PRAVIN |
分类号 |
E21B47/022;G01V3/30;(IPC1-7):E21B47/09 |
主分类号 |
E21B47/022 |
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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