1887
Volume 39 Number 7
  • ISSN: 0263-5046
  • E-ISSN: 1365-2397

Abstract

Abstract

We demonstrate an attenuation-compensated diffraction imaging workflow to image complex carbonate reservoirs with overburden challenges including shallow gas accumulations. Diffraction separation is performed on pre-migration regularized common-offset gathers compatible with Kirchhoff migration, which allowed us to migrate the diffractions using our preferred viscoacoustic algorithm for the field. When carried out in parallel with conventional seismic data processing, diffraction analysis can help to constrain process parameters and decisions, ultimately leading to better results for both. We show that seismic attributes derived from such a workflow can help to better delineate karsts, fractures, and collapse features, which can be incorporated into the reservoir model and improve our confidence in well placement.

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2021-07-01
2021-07-29
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