发明名称 |
Well logging disc coil receiving means and method |
摘要 |
The present invention is a well logging receiver coil system which includes a coil. The system also includes a variable capacitor connected across the coil to form a resonant circuit tuned to a predetermined frequency. The coil in the presence of an electromagnetic field has a current induced therein representative of the strength of the electromagnetic field. A pick-off circuit is connected to the coil in a predetermined manner and provides a signal representative of the strength of the magnetic component of the electromagnetic field substantially unaffected by the electrical field component of the electromagnetic field.
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申请公布号 |
US4703278(A) |
申请公布日期 |
1987.10.27 |
申请号 |
US19840658928 |
申请日期 |
1984.10.09 |
申请人 |
TEXACO INC. |
发明人 |
NUSSBAUM, THEODORE W.;TOOKER, KEITH R.;COX, PERCY T. |
分类号 |
G01V3/28;(IPC1-7):G01V3/26 |
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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