发明名称 |
Electromagnetic logging tool calibration system |
摘要 |
Techniques for calibrating an electromagnetic logging tool equipped with a plurality of antennas, with at least one antenna having its axis at an angle with respect to a tool axis, include disposing a test loop about the tool such that an axis of the tool and a plane on which the test loop lies form a tilt angle that is between about 0 and 90 degrees. An induced signal is measured at one of the antennas by energizing another of the antennas. Embodiments analyze the induced signal corresponding to a max or min extrema associated with a coupling effect due to the test loop. In other embodiments a corrected signal is compared with a calculated signal.
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申请公布号 |
US2004113609(A1) |
申请公布日期 |
2004.06.17 |
申请号 |
US20030616710 |
申请日期 |
2003.07.10 |
申请人 |
HOMAN DEAN M.;ROSTHAL RICHARD A.;MINERBO GERALD N.;BARBER THOMAS D. |
发明人 |
HOMAN DEAN M.;ROSTHAL RICHARD A.;MINERBO GERALD N.;BARBER THOMAS D. |
分类号 |
G01V13/00;(IPC1-7):G01R35/00;G01V3/18 |
主分类号 |
G01V13/00 |
代理机构 |
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主权项 |
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