1887

Abstract

Summary

Complex shallow salt canopies, such as those found in offshore basins in the Gulf of Mexico, Brazil, and West Africa often suffer poor illumination, which results in poor subsalt imaging. The geometry of subsalt horizons truncating against the base of salt often determines if a trap exists and if it will be economically viable. It is, therefore, important to get an accurate image in these areas to reduce the seismic uncertainty. Unfortunately, the presence of converted mode energy can add spurious complexity to the subsalt image and degrade subsalt target interpretation. A novel C-wave attenuation workflow is introduced to address the C-wave energy. Synthetic and field data examples show a significant improvement in the image interpretability and demonstrates the importance of this application to earth model building and amplitude variation with offset AVO work

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/content/papers/10.3997/2214-4609.201800660
2018-06-11
2020-05-26
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References

  1. Kobylarski, M, C.Tyson, and S.Long
    , 2015, Suppressing sub-salt converted mode interference: an example from deep-water Angola: 85th Annual International Meeting, SEG, Expanded Abstracts, 4044–4048.
    [Google Scholar]
  2. Ogilvie, J.S. and G.W.Purnell
    , 1996, Effects of salt-related mode conversions on subsalt prospecting: GEOPHYSICS, 61(2), 331–348.
    [Google Scholar]
  3. Richard, S., D.Lu, E.Willen, and I.A.Watson
    , 2000, Identifying, removing, and imaging P-S conversions at salt-sediment interfaces: 70th Annual International meeting, SEG, Expanded Abstracts, 477–480
    [Google Scholar]
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