1887

Abstract

Summary

Least-squares migration has been shown to improve image quality compared to the conventional migration method and it is one of the hot spot of present research. Phase encoding technique can effectively improve the computation efficiency. But, conventional LSRTM not takes into account the random nature of the gradients. In this abstract, we extend the stochastic optimization approach to LSRTM, and find that the new methods perform better than the conventional LSRTM. Besides, an isotropic acoustic LSRTM is a potential technique of seismic imaging, but the imaging result is not accurate when dealing with model in TTI media. Therefore, we extended the isotropic acoustic LSRTM is to anisotropic acoustic LSRTM in TTI media.

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/content/papers/10.3997/2214-4609.201412879
2015-06-01
2024-04-26
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References

  1. AlkhalifahT.
    [2000] An acoustic wave equation for anisotropic media: Geophysics, 65, 1239–1250.
    [Google Scholar]
  2. DaiW, PFowler and G TSchuster
    . [2012] Multisource least-squares reverse time migration: Geophysical Prospecting, 60(4), 681–695
    [Google Scholar]
  3. LiQ Y, HuangJ P and LiZ C, et al.
    [2014] Multi-source Least-squares Reverse-time Migration in the Presence of Topography on Body-fitted Grids. 76th EAGE Conference & Exhibition, Extended Abstracts, We P02 01.
    [Google Scholar]
  4. MoghaddamP P, KeersH, HerrmannF J, MulderW A
    . [2013] A new optimization approach for source-encoding full-waveform inversion. Geophysics, 78(3):R125–R132
    [Google Scholar]
  5. NemethT, WuC J, SchusterG T
    . [1999] Least-squares migration of incomplete reflection data. Geophysics, 64(1), 208–221.
    [Google Scholar]
  6. Romero, L. A., D. C.Ghiglia, C. C.Ober, and S. A.Morton
    , [2000] Phase encoding of shot records in prestack migration: Geophysics, 65, 426–436
    [Google Scholar]
  7. ZhouH, GZhang, and RBloor
    . [2006] An anisotropic acoustic wave equation for modeling and migration in 2D TTI media: 76th Annual International Meeting, SEG, Expanded Abstracts, 194–198.
    [Google Scholar]
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