Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Xiaojun Huang0
Hezhu Yin0
Date of Patent
April 13, 2010
0Patent Application Number
117918100
Date Filed
December 22, 2005
0Patent Primary Examiner
Patent abstract
A method and apparatus for estimating the slowness of a geological formation using waveforms recorded by an acoustic borehole logging tool. Phase slowness coherence is extracted from the recorded waveforms after transformation to the frequency domain (804) at various frequencies (806), and this is converted into a formation slowness curve (808) which can be used as an objective function from which an anomaly, such as a local maximum or minimum (810), can be identified as representative of an estimate of the formation slowness.
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