Coil winding methods for downhole logging tools
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United States of America Patent
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Feb 14, 2017
Grant Date -
Jun 12, 2014
app pub date -
Aug 10, 2011
filing date -
Aug 10, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A logging tool and method for winding a multi-component induction (MCI) antenna is presented. The method eliminates unwanted dipole signals that are created by the voltage drop that takes place in the transmitter. The antenna is made of at least two parts physically separated, one on each side of the mandrel. The winding method is performed in a way that creates at least four windings arranged to eliminate dipole signals attributable to an asymmetric voltage distribution. The midpoint of the conductive wire that for is the antenna windings may be electrically attached to the tool body. This method is suitable for the winding of the cross-components X and Y of the MCI coil arrays.
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Cited Art Landscape
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