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Common-offset common-reflection-surface attributes estimation with differential evolutionNormal access

Authors: T. Barros, R. Lopes, R. Krummenauer and H. Chauris
Journal name: Geophysical Prospecting
Issue: Vol 67, No 8, October 2019 pp. 2022 - 2034
DOI: 10.1111/1365-2478.12827
Organisations: Wiley
Language: English
Info: Article, PDF ( 18.41Mb )

Summary:
Common-reflection surface is a method to describe the shape of seismic events, typically the slopes (dip) and curvature portions (traveltime). The most systematic approach to estimate the common-reflection surface traveltime attributes is to employ a sequence of single-variable search procedures, inheriting the advantage of a low computational cost, but also the disadvantage of a poor estimation quality. A search strategy where the common-reflection surface attributes are globally estimated in a single stage may yield more accurate estimates. In this paper, we propose to use the bio-inspired global optimization algorithm differential evolution to estimate all the two-dimensional common-offset common-reflection surface attributes simultaneously. The differential evolution algorithm can provide accurate estimates for the common-reflection surface traveltime attributes, with the benefit of having a small set of input parameters to be configured.We apply the differential evolution algorithm to estimate the two-dimensional common-reflection surface attributes in the synthetic Marmousi data set, contaminated by noise, and in a land field data with a small fold. By analysing the stacked and coherence sections, we could see that the differential evolution based common-offset common-reflection surface approach presented significant signal-to-noise ratio enhancement.

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