Sarah Greer, Massachusetts Institute of Technology

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Phase correcting data is important for the optimal interpretation of seismic images. We introduce an approach for correcting prestack migration gathers for variable phase rotations that consists of residual normal moveout (NMO) corrections, correcting to the same phase using local similarity and correcting to zero phase using local skewness. This produces more consistent and reliable data than before phase corrections and should improve the quality of stack and amplitude versus offset (AVO) analysis. We demonstrate the method on seismic data from the Arkoma Basin in Oklahoma.

Abstract Author(s): Sarah Greer, Sergey Fomel, Michael Fry