Device for electromagnetic detection of geological properties in a well
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United States of America Patent
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Mar 30, 2004
Grant Date -
N/A
app pub date -
Feb 28, 2001
filing date -
Jun 18, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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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