1887

Abstract

Summary

We propose a method for imaging small scale diffraction objects. It is based on separation between specular reflection and diffraction components of the total wavefield in the migrated domain. Reverse-time migration was utilized to produce surface dip-angle common image gathers. We used continuity of diffractions in the dip-angle CIGs as a criterion for separating reflections from diffractions. Synthetic and real data examples illustrate efficient application of the method in case of moderate lateral velocity variation.

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/content/papers/10.3997/2214-4609.20140985
2014-06-16
2024-03-28
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References

  1. Baysal, E., Kosloff, D. and Sherwood, J.
    [1983] Reverse time migration. Geophysics, 48, 1514–1524.
    [Google Scholar]
  2. Fomel, S., Landa, E. and Taner, M.T.
    [2007] Poststack velocity analysis by separation and imaging of seismic diffractions. Geophysics, 72, U89–U94.
    [Google Scholar]
  3. Giboli, M., Baina, R. and Landa, E.
    [2013] Depth migration in the offset-aperture domain: Optimal summation. SEG Annual meeting, Expanded abstracts, 3866–3871.
    [Google Scholar]
  4. Khaidukov, V., Landa, E. and. Moser, T.J.
    [2004] Diffraction imaging by focusing-defocusing: An outlook on seismic superresolution. Geophysics, 69, 1478–1490.
    [Google Scholar]
  5. Klokov, A., Baina, R. and Landa, E.
    [2010] Separation and imaging of seismic diffractions in dip angle domain. EAGE annual meeting, Extended Abstracts
    [Google Scholar]
  6. Landa, E., Fomel, S. and Moser, T.J.
    [2006] Path-integral seismic imaging. Geophysical Prospecting, 54(5), 1365–2478.
    [Google Scholar]
  7. Landa, E., Fomel, S. and Reshef, M.
    [2008] Separation, imaging, and velocity analysis of seismic diffractions using migrated dip-angle gathers. 78th Annual International Meeting, SEG, Expanded Abstracts, 2176–2180.
    [Google Scholar]
  8. Reshef, M. and Landa, E.
    [2009] Post-stack velocity analysis in the dip-angle domain using diffractions. Geophysical Prospecting, 57, 811–821.
    [Google Scholar]
  9. Wang, J., Ng, M. and Perz, M.
    [2010] Seismic data interpolation by greedy local Radon transform. Geophysics, 75(6), WB225–WB234.
    [Google Scholar]
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