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Generalized Diffraction-stack Migration and Filtering of Coherent Noise*

January 01, 2017


Generalized Diffraction-stack Migration and Filtering of Coherent Noise: A standard reverse time migration (RTM) image is obtained by computing the zero-lag correlation of the back-projected data with the source wavefield. The forward-modeling and back-projection operations usually are computed by a finite-difference solution to the two-way wave equation. For back projection, each recorded trace acts as a source-time history (in reverse time) of a virtual point source at the geophone location. This is a simple and easily understood migration method that most often is preferred for imaging beneath complex geology such as salt bodies. Chapter 13 highlights a recent development in diffraction migration – a reformulated approach to reverse-time migration. Here, you will find a reprint of “Generalized diffraction-stack migration and filtering of coherent noise,” by Ge Zhan, Wei Dai, Min Zhou, Yi Luo, and myself, originally published in Geophysical Prospecting. This 2014 paper describes a new approach to image migration, from the original team who developed the method. I add footnotes and a set of exercises following the reprinted piece, but the paper stands alone and deserves to be reprinted in its entirety. Special thanks to my coauthors and to Geophysical Prospecting for their kind permission to reprint this work.

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Society of Exploration Geophysicists

Seismic Inversion

Gerard T. Schuster
Gerard T. Schuster
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Society of Exploration Geophysicists
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January 01, 2017




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