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Amplitude-Preserving Monte Carlo 3D Prestack Migration
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 64th EAGE Conference & Exhibition, May 2002, cp-5-00381
Abstract
B-09 AMPLITUDE-PRESERVING MONTE CARLO 3D PRESTACK MIGRATION Abstract 1 We present an amplitude-preserving imaging condition based on a least-squares approach that applies to Monte Carlo wavefield migration methods. Its implementation requires the knowledge of the overall shot illumination map that can be computed at a negligible additional cost during the migration process. The resulting condition is not sensitive to instability effects usually plaguing other formulations. Furthermore it compensates irregular shot illumination and focusing/defocusing effect caused by the velocity field. Finally we show how the shot illumination volume is used as an independent tool for a better interpretation of seismic data.