1887

Abstract

Summary

The conventional FWI is exposed to cycle skipping especially when the initial model is inadequate and the ultra-low frequencies are not present in the observed data. If the FWI does not have the power to mitigate the cycle skipping then initial velocity must be built by travel-time tomography. This way the model building would comprise of travel-time tomography followed by FWI and finish the flow with travel-time tomography. Our FWI does not require half wavelength convergence criteria this is why we can skip the first travel-time tomography in the flow which shortens the turnaround time on depth imaging projects. This FWI and the new workflow are demonstrated by synthetic and field data examples.

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/content/papers/10.3997/2214-4609.201601191
2016-05-31
2020-05-30
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References

  1. Biondi, B. and Almomin, A.
    [2013] Tomographic full waveform inversion (TFWI) by extending the velocity model along the time-lag axis. 83rd SEG Annual Meeting, Expanded Abstracts.
    [Google Scholar]
  2. Gao, F., Williamson, P. and Pratt, R.G.
    [2014] A new objective function for full waveform inversion: differential semblance in the data domain. 84th SEG Annual Meeting, Expanded Abstracts. 1178–1183.
    [Google Scholar]
  3. Jiao, K., Sun, D., Cheng, X. and Vigh, D.
    [2015] Adjustive full waveform inversion. 85th SEG Annual Meeting, Expanded Abstracts. 1091–1095.
    [Google Scholar]
  4. Shin, C., Ha, W. and Kim, Y.
    [2013] Subsurface model estimation using Laplace-domain inversion methods. The Leading Edge, 32, 1094–1099.
    [Google Scholar]
  5. Warner, M. and Guasch, L.
    [2014] Adaptive waveform inversion – FWI without Cycle-Skipping - Theory, 76th EAGE conference and Exhibition, WeE10613, doi:10.3997/2214‑4609.20141092.
    https://doi.org/10.3997/2214-4609.20141092 [Google Scholar]
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