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Abstract

Summary

Low-frequency artifacts appear in seismic images obtained by reverse time migration with the zero-lag cross-correlation imaging condition due to the unwanted correlation of diving waves, head waves and backscattered waves. These artifacts can hide important details in the image and different methods have been proposed to attenuate or reduce them. The Laplacian filtering is the common post-processing technique to reduce the artifacts, but it increases the high-frequency noise in the image. Paniagua and Sierra-Sosa (2016) proposed the use of the Laguerre-Gauss spatial filtering (LGSF) to reduce the artifacts and enhance subsurface structures in the seismic image.\\

In this work, we describe the performance of the LGSF and demonstrate the good behavior of this postprocessing technique through synthetic examples. We used the original and different smoothed velocity models to show the capabilities of the LGSF and the results obtained in presence of small changes in the images. We demonstrate that despite the smoothed velocity models the LGSF preserves well the reflections with their true locations and significantly attenuates the low-frequency noise.

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/content/papers/10.3997/2214-4609.201700678
2017-06-12
2024-04-19

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References

  1. Claerbout, J.F.
    [1971] Toward a unified theory of reflector mapping. Geophysics, 36, 467–481.
     [Google Scholar]
  2. [1985] Imaging the Earth’s interior. Blackwell Scientific Publications.
     [Google Scholar]
  3. Gou, C., Han, Y. and Xu, J.
    [2006] Radial Hilbert transform with Laguerre-Gaussian spatial filters. Optics Letters, 31(10), 1394–1396.
     [Google Scholar]
  4. Guitton, A., Kaelin, B. and Biondi, B.
    [2007] Least-square attenuation of reverse time migration. 76th International Annual Meeting, SEG, Expanded abstracts, 2348–2352.
     [Google Scholar]
  5. Jones, I.F.
    [2014] Tutorial: migration imaging conditions. First break, 32(12), 45–55.
     [Google Scholar]
  6. Jones, I.F. and Davison, I.
    [2014] Seismic imaging in and around salt bodies. Interpretation, 2, SL1–SL20.
     [Google Scholar]
  7. Moradpouri, F., Moradzadeh, A., Pestana, R. and Soleimani Monfared, M.
    [2016] Seismic reverse time migration using a new wave-field extrapolator and a new imaging condition. Acta Geophysica, 64(5), 1673–1690.
     [Google Scholar]
  8. Paniagua, J.G. and Sierra-Sosa, D.
    [2016] Laguerre Gaussian filters in reverse time migration image reconstruction. VII Simpósio Brasileiro de Geofísica, Expanded abstracts.
     [Google Scholar]
  9. Sun, S.Y. and Cai, J.
    [2009] Reverse time migration fan filtering plus wavefield decomposition. 79th International exposition and annual meeting, SEG, Expanded abstracts, 2804–2808.
     [Google Scholar]
  10. Tary, J., Van der Baan, M. and Herrera, R.
    [2016] Attenuation estimation using high resolution time-frequency transforms. Dig. Sig. Proc., DOI: 10.1016/j.dsp.2016.08.007.
     https://doi.org/10.1016/j.dsp.2016.08.007. [Google Scholar]
  11. Wang, W., Yokozeki, T., Ishijima, R., Takeda, M. and Hanson, S.G.
    [2006] Optical vortex metrology based on the core structures of phase singularities in Laguerre-Gauss transform of a speckle pattern. Optics Express, (14), 10195–10206.
     [Google Scholar]
  12. Wang, Z., Ding, H., Lu, G. and Bi, X.
    [2016] Reverse-time migration based optical imaging. IEEE Transactions on medical imaging, 35(1), 273–281.
     [Google Scholar]
  13. Whitmore, N. and Crawley, S.
    [2012] Applications of RTM inverse scattering imaging conditions. 82th Annual International Meeting, SEG, Expanded abstracts, 779–784.
     [Google Scholar]
  14. Youn, O. and Zhou, H.
    [2001] Depth imaging with multiples. Geophysics, 66, 246–255.
     [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201700678
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Attenuation of Reverse Time Migration Artifacts Using Laguerre-Gauss Filtering
Conference Proceedings 2017, 1 (2017); https://doi.org/10.3997/2214-4609.201700678
/content/papers/10.3997/2214-4609.201700678
/content/papers/10.3997/2214-4609.201700678
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