发明授权
- 专利标题: Electromagnetic logging tool calibration system
- 专利标题(中): 电磁测井仪校准系统
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申请号: US10616710申请日: 2003-07-10
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公开(公告)号: US07414391B2公开(公告)日: 2008-08-19
- 发明人: Dean M. Homan , Richard A. Rosthal , Gerald N. Minerbo , Thomas D. Barber
- 申请人: Dean M. Homan , Richard A. Rosthal , Gerald N. Minerbo , Thomas D. Barber
- 申请人地址: US TX Sugar Land
- 专利权人: Schlumberger Technology Corporation
- 当前专利权人: Schlumberger Technology Corporation
- 当前专利权人地址: US TX Sugar Land
- 代理商 Bryan L. White; Darla Fonseca; Dale Gaudier
- 主分类号: G01R35/00
- IPC分类号: G01R35/00 ; G01R33/00 ; G01V3/10 ; G01V1/40
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.
公开/授权文献
- US20040113609A1 Electromagnetic logging tool calibration system 公开/授权日:2004-06-17