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Book Chapter

Diffraction enhancement in prestack seismic data

By
Reeshidev Bansal
Reeshidev Bansal
Formerly Virginia Polytechnic Institute and State University, Department of Geosciences, Blacksburg, Virginia 24061; presently University of Texas at Austin, Institute for Geophysics, 4412 Spicewood Springs Road, Building 600, Austin, Texas 78759-8500.
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Matthias G. Imhof
Matthias G. Imhof
Virginia Polytechnic Institute and State University, Department of Geosciences, 4044 Derring Hall, Blacksburg, Virginia 24061.
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Published:
January 01, 2016

Abstract

Seismic diffractions are often considered noise and are intentionally or implicitly suppressed during processing. Diffraction-like events include true diffractions, wave conversions, or fracture waves which may contain valuable information about the subsurface and could be used for interpretation or imaging. Using synthetic and field data, we examine workflows to separate diffractions from reflections that allow enhancement of diffraction-like signals and suppression of reflections. The workflows consist of combinations of standard processing modules. Most workflows apply normal move-out corrections to flatten reflection hyperbolas, which eases their removal. We observe that the most effective techniques are the decomposition of seismic gathers into eigensections and flows based on Radon transformations.

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Contents

Society of Exploration Geophysicists Geophysics Reprint Series

Seismic Diffraction

Kamil Klem-Musatov
Kamil Klem-Musatov
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Henning Hoeber
Henning Hoeber
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Michael Pelissier
Michael Pelissier
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Tijmen Jan Moser
Tijmen Jan Moser
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Society of Exploration Geophysicists
Volume
30
ISBN electronic:
9781560803188
Publication date:
January 01, 2016

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