1887

Abstract

Summary

Migration Velocity Analysis in the subsurface-domain measures velocity errors via (extended) imagedomain residuals with respect to an ideal reference image and then updates the velocity model in order to minimise those residuals. Because of the similarity between images with similar extension parameter (shot number, offset, incidence angle, etc.), image-warping presents a robust approach to compute image residuals in different subsurface domains. However, since similarity measures cannot in general distinguish between signal and coherent noise, kinematic artefacts that contaminate the migrated images in certain extended domains can lead to strong and spurious events in the image perturbations and hinder the robustness of the tomographic inversion.

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/content/papers/10.3997/2214-4609.201413496
2015-06-01
2020-05-27
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References

  1. Baek, H., Calandra, H. and DemanetL.
    [2014] Velocity estimation via registration-guided least-squares waveform inversion. Geophysics, 79, R79–R89.
    [Google Scholar]
  2. Xu, S., Chauris, H., Lambaré, G. and Noble, M. S.
    [2001] Common-angle migration: A strategy for imaging complex media. Geophysics, 66, 1877–1894.
    [Google Scholar]
  3. Hale, D.
    [2008] Apparent horizontal displacements in time-lapse seismic images. SEG Technical Program, Expanded Abstracts 2008, 3169–3173.
    [Google Scholar]
  4. [2009] A method for estimating apparent displacement vectors from time-lapse seismic images. Geophysics, 74, V99–V107.
    [Google Scholar]
  5. [2013] Dynamic image warping of seismic images. Geophysics, 78, S105–S115.
    [Google Scholar]
  6. Luo, Y. and Schuster, G.
    [1991] Wave equation traveltime inversion. Geophysics, 56, 645–653
    [Google Scholar]
  7. Ma, Y. and Hale, D.
    [2013] Wave-equation reflection traveltime inversion with dynamic warping and full-waveform inversion. Geophysics, 78, R223–R233.
    [Google Scholar]
  8. Perrone, F. and Sava, P.
    [2013] Shot-domain 4D time-lapse velocity analysis using apparent image displacements. SEG Technical Program, Expanded Abstracts 2013, 4932–4936.
    [Google Scholar]
  9. Perrone, F., Sava, P. and Panizzardi, J.
    [2015] Wavefield tomography based on local image correlations. Geophysical Prospecting, 63, 35–54.
    [Google Scholar]
  10. Perrone, F. and Sava, P.
    [2015] Image-warping waveform tomography. Geophysical Prospecting, DOI:10.1111/1365‑2478.12225.
    https://doi.org/10.1111/1365-2478.12225 [Google Scholar]
  11. Stolk, C. and Symes, W. W.
    [2004] Kinematic artifacts in prestack depth migration. Geophysics, 69, 562–575.
    [Google Scholar]
  12. Yang, D., Malcolm, A. and Fehler, M.
    [2014] Using image warping for time-lapse image domain wavefield tomography. Geophysics, 79, WA141–WA151
    [Google Scholar]
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