Normalization of sector amplitudes using monopole amplitudes
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United States of America Patent
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Jul 25, 2017
Grant Date -
Feb 25, 2016
app pub date -
Aug 19, 2014
filing date -
Aug 19, 2014
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Abstract
A method and apparatus for normalizing an acoustic wellbore tool by correcting measured sector acoustic signals due to changes in pressure and temperature downhole, the method and apparatus comprising an acoustic wellbore tool having at least one monopole transmitter and monopole receiver, and one or more sector transmitters and receivers disposed along the longitudinal axis of the tool, determining the attenuation values of received monopole and sector acoustic signals, determining a correction ratio using an average sector attenuation value and a theoretical attenuation value, and correcting the sector acoustic signals using the correction ratio.
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