Electronics for a thin bed array induction logging system
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United States of America Patent
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Aug 1, 2017
Grant Date -
Jan 8, 2015
app pub date -
Sep 23, 2014
filing date -
Jul 11, 2012
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Abstract
A logging tool electronics system is disclosed with noise minimization features and pulse compression signal processing techniques to improve the signal-to-noise ratio of array induction logging tools. The borehole is radiated with a magnetic field produced by a configurable multi-frequency and/or multi-amplitude sine wave signal stimulus section driving a fully differential single transmitter coil. Received signals from multiple mutually balanced fully differential receiver arrays are processed by receiver signal chains using adaptive algorithms under firmware control. The received signals are used to determine the conductivity and resistivity of the formation surrounding the borehole.
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