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Abstract

Summary

Elastic full waveform inversion (EFWI) provides high-resolution parameter estimation of the subsurface but requires good initial guess of the true model. The traveltime inversion only minimizes traveltime misfits which are more sensitive and linearly related to the low-wavenumber model perturbation. Therefore, building initial P and S wave velocity models for EFWI by using elastic wave-equation reflections traveltime inversion (WERTI) would be effective and robust, especially for the deeper part. In order to distinguish the reflection travletimes of P or S-waves in elastic media, we decompose the surface multicomponent data into vector P- and S-wave seismogram. We utilize the dynamic image warping to extract the reflected P- or S-wave traveltimes. The P-wave velocity are first inverted using P-wave traveltime followed by the S-wave velocity inversion with S-wave traveltime, during which the wave mode decomposition is applied to the gradients calculation. Synthetic example on the Sigbee2A model proves the validity of our method for recovering the long wavelength components of the model.

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/content/papers/10.3997/2214-4609.201701005
2017-06-12
2024-04-19

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References

  1. Brossier, R., S.Operto, and J.Virieux
    , 2009, Seismic imaging of complex onshore structures by 2d elastic frequency-domain full-waveform inversion:Geophysics, 74, WCC105–WCC118.
     [Google Scholar]
  2. Chi, B., L.Dong, and Y.Liu
    , 2015, Correlation-based reflection full-waveform inversion:GEOPHYSICS, 80, R189–R202.
     [Google Scholar]
  3. Guo, Q., and T.Alkhalifah
    , 2016, in A nonlinear approach of elastic reflection waveform inversion: Society of Exploration Geophysicists, 1421–1425.
     [Google Scholar]
  4. Hale, D.
    , 2013, Dynamic warping of seismic images: GEOPHYSICS, 78, S105–S115.
     [Google Scholar]
  5. Li, Z., X.Ma, C.Fu, B.Gu, and G.Liang
    , 2016, Frequency-wavenumber implementation for p- and s-wave separation from multi-component seismic data: Exploration Geophysics, 47, 32.
     [Google Scholar]
  6. Luo, Y., Y.Ma, Y.Wu, H.Liu, and L.Cao
    , 2016, Full-traveltime inversion: GEOPHYSICS, 81, R261–R274.
     [Google Scholar]
  7. Ma, Y., and D.Hale
    , 2013, Wave-equation reflection traveltime inversion with dynamic warping and full-waveform inversion: GEOPHYSICS, 78, R223–R233.
     [Google Scholar]
  8. Sears, T., S.Singh, and P.Barton
    , 2008, Elastic full waveform inversion of multi-component OBC seismic data: Geophysical Prospecting, 56, 843–862.
     [Google Scholar]
  9. Wang, T., J.Cheng, and C.Wang
    , 2015, Elastic wave mode decoupling for full waveform inversion: Presented at the 77th EAGE Conference and Exhibition 2015, EAGE Publications.
     [Google Scholar]
  10. Wu, Z., and T.Alkhalifah
    , 2015, Simultaneous inversion of the background velocity and the perturbation in full-waveform inversion: GEOPHYSICS, 80, R317–R329.
     [Google Scholar]
  11. Xu, S., D.Wang, F.Chen, G.Lambare, and Y.Zhang
    , 2012, Inversion on reflected seismic wave: 82nd Annual International Meeting, SEG, Expanded Abstracts, 1–7.
     [Google Scholar]
  12. Zhou, W., R.Brossier, S.Operto, and J.Virieux
    , 2015, Full waveform inversion of diving & reflected waves for velocity model building with impedance inversion based on scale separation: Geophysical Journal International, 202, 1535–1554.
     [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201701005
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Elastic Wave-Equation Reflection Traveltime Inversion Using Dynamic Warping and Wave Mode Decomposition
Conference Proceedings 2017, 1 (2017); https://doi.org/10.3997/2214-4609.201701005
/content/papers/10.3997/2214-4609.201701005
/content/papers/10.3997/2214-4609.201701005
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