发明名称 |
Detection of borehole currents due to a decentered transverse magnetic dipole transmitter |
摘要 |
The invention provides an apparatus for making an electromagnetic measurement from within a subsurface borehole. The apparatus comprises an elongated support having electrically conductive segments and adapted for disposal within the borehole; an antenna adapted to transmit electromagnetic energy disposed on the support such that its axis is tilted or perpendicular with respect to the axis of the support; a sensor disposed on the support and adapted to detect a current flow along the support when the antenna is activated to transmit electromagnetic energy; and means to process the detected current flow to provide an indication of the measurement quality or the position of the support within the borehole.
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申请公布号 |
US6927578(B2) |
申请公布日期 |
2005.08.09 |
申请号 |
US20020248119 |
申请日期 |
2002.12.19 |
申请人 |
SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
HOMAN DEAN M.;OMERAGIC DZEVAT |
分类号 |
G01V3/28;(IPC1-7):G01V3/18 |
主分类号 |
G01V3/28 |
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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