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Angle-Domain Common Image Gathers and RMO Analysis for Anisotropic Migration
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 68th EAGE Conference and Exhibition incorporating SPE EUROPEC 2006, Jun 2006, cp-2-00321
- ISBN: 978-90-73781-00-9
Abstract
I present a general methodology for computing and analyzing Angle-Domain Common Image Gathers (ADCIGs) in conjunction with anisotropic<br>wavefield-continuation migration. I demonstrate that the aperture angles estimated by transforming prestack images using slant stacks along the <br>subsurface-offset axisi are good approximations of the phase aperture angles.<br>I analyze the perturbation in the angle-domain image caused by perturbations in anisotropic parameters, and present a general expression for computing Residual Moveout (RMO) curves. <br>Several synthetic-data and real-data examples demonstrate the accuracy of the RMO function predicted by my kinematic analysis.