Seismic trace overburden correction method

Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type

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367 38, 367 52, 364421, C01V 136

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055153356

ABSTRACT:
A method for generating improved displays of seismic data by processing seismic amplitude versus offset data to correct for overburden effects. Analytic traces are calculated for the zero offset reflectivity, A, trace and the amplitude versus offset slope, B, trace of the AVO data. Statistics for the A and B traces within a selected window in time and common depth point space about a selected sample point are calculated. The statistics include root mean square amplitudes of the A and B traces and the correlation coefficient. Desired statistics are selected and used with the measured statistics to correct the A and B traces.

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