Acoustic signal processing using model-based adaptive filtering
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United States of America Patent
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May 31, 2016
Grant Date -
Jan 2, 2014
app pub date -
Mar 15, 2011
filing date -
Mar 15, 2011
priority date (Note) -
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Abstract
A method of processing acoustic waveform data is disclosed. An acoustic logging tool acquires acoustic waveform data. An adaptive frequency filter is determined. The acoustic waveform data is filtered using the adaptive frequency filter. A formation slowness is determined from the filtered acoustic waveform data. The lower bound of the adaptive frequency filter may be determined using a polynomial function of a minimum excitement frequency parameter, a slowness parameter, and a third parameter. The upper bound of the adaptive frequency filter may be determined using a polynomial function of a peak excitement frequency parameter, the slowness parameter, and the third parameter.
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