发明名称 |
Device for electromagnetic detection of geological properties in a well |
摘要 |
The invention is a well radar for detecting, by electromagnetic wave reflection, resistivity horizons in production zones in oil wells. Transmitter and receiver antennas are combined in a tubing string antenna module. Two dipole transmitter antenna are positioned in a first position on either side of the tubing string antenna module. A first directionally sensitive group of four dipole receiver antennas is positioned in a second positioned so that the receiver antennas have even angular separation. Likewise, a second directionally sensitive group of four dipole receiver antennas is positioned in a third position opposite the first directionally sensitive group.
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申请公布号 |
US6714153(B1) |
申请公布日期 |
2004.03.30 |
申请号 |
US20010719638 |
申请日期 |
2001.02.28 |
申请人 |
DEN NORSKE STATS OLJESELSKAP A.S.;KONGSBERG OFFSHORE A.S.;NORGES GEOTEKNISKE INSTITUTT |
发明人 |
KONG FAN-NIAN;ELLINGSRUD SVEIN;STEN-HALVORSEN VIDAR;STOELEN EINAR;WESTERDAHL HARALD;EIDESMO TERJE |
分类号 |
G01V3/30;(IPC1-7):G01S13/88;G01S13/00 |
主分类号 |
G01V3/30 |
代理机构 |
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