Patent ID: 7668043
Filing Date: 2010-02-23
Classification: G01V

Abstract:
1. A method for processing dispersive sonic waveform data, comprising: processing the sonic waveform data, based on an initial guess set of formation-borehole parameters, to produce initial coherence peak attributes, wherein the processing is performed in a borehole; sending the initial coherence peak attributes uphole via telemetry; and correcting the initial coherence peak attributes, based on a second set of formation-borehole parameters, to produce corrected coherence peak attributes, wherein the correcting comprises adding a correction factor to the initial coherence peak attributes, the correction factor being derived from a comparison between an initial guess set of dispersion curves corresponding to the initial guess set of formation-borehole parameters and a second set of dispersion curves corresponding to the second set of formation-borehole parameters, and wherein the comparison comprises a difference between the initial guess set of dispersion curves and the second set of dispersion curves.