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Abstract

Summary

Diffractions occur when seismic waves strike on lithologic or structural discontinuities in subsurface and they are therefore useful for the prediction of geological abruptions. Due to the weakness of diffractions compared with reflection energy, diffraction separation is required. Migrated gathers in dip-angle domain reveal a clear difference in shape between reflection and diffraction events. According to the distinction, we put forward a novel diffraction separation method called trace randomized realignment and denoising, the core concept of which is to realign the traces in each raw migrated dip-angle gather randomly, eliminate the reflections in the gathers as noise and preserve the diffractions. Synthetic and real data examples confirm the validity and accuracy of the proposed method from the perspective of dip-angle gather as well as diffraction image.

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/content/papers/10.3997/2214-4609.201801647
2018-06-11
2024-04-26

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References

  1. Claerbout, J.
    [2004] Earth soundings analysis: Processing versus inversion. Blackwell Scientific Publications, Inc.
     [Google Scholar]
  2. Klokov, A. and Fomel, S.
    [2012] Separation and imaging of seismic diffractions using migrated dip-angle gathers. Geophysics, 77, S131–143.
     [Google Scholar]
  3. Landa, E., Fomel, S. and Reshef, M.
    [2008] Separation, imaging, and velocity analysis of seismic diffractions using migrated dip-angle gathers. SEG Technical Program Expanded Abstracts, 27, 2176–180.
     [Google Scholar]
  4. Marfurt, K. J.
    [2006] Robust estimates of 3D reflector dip and azimuth. Geophysics, 71, P29–P40.
     [Google Scholar]
  5. Moser, T. J. and Howard, C. B.
    [2008] Diffraction imaging in depth. Geophysical Prospecting, 56, 627–641.
     [Google Scholar]
  6. Oropeza, V. and Sacchi, M.
    [2011] Simultaneous seismic data denoising and reconstruction via multichannel singular spectrum analysis. Geophysics, 76, V25–V32.
     [Google Scholar]
  7. Sherif, R. E. and Geldart, L. P.
    [1995] Exploration seismology (Second Edition). Cambridge University Press.
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A New Method for Diffraction Separation based on Trace Randomized Realignment and Denoising in Migrated Dip-Angle Domain
Conference Proceedings 2018, 1 (2018); https://doi.org/10.3997/2214-4609.201801647
/content/papers/10.3997/2214-4609.201801647
/content/papers/10.3997/2214-4609.201801647
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