1887

Abstract

Summary

Source deghosting and demultiple algorithms have been extensively studied but mostly in the case of a flat sea-surface. In this work, we consider time-varying sea-surfaces in different types of weather conditions and derive an inversion approach for removal of sea-surface effects. Starting from Rayleigh's reciprocity theorem, we model seismic data including time-dependent wavefields scattered at the sea-surface, and highlight the temporal variation of these wavefields through simple synthetic examples, comparing two different weather conditions (calm and rough). We also reveal a limitation of source deghosting in the context of time-dependent wavefields: source deghosting affects the sea-surface multiples and can compromise the success of demultiple processing, which is applied in a later step. Results shows that this limitation is also important under calm weather conditions. To overcome this limitation, we propose simultaneously source deghosting and demultiple, therefore, removing all sea-surface effects in one-step. Synthetic data examples are shown using the Sigsbee2B geological model.

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/content/papers/10.3997/2214-4609.201901515
2019-06-03
2024-03-29
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References

  1. Blacquière, G. & Sertlek, H.Ö
    . [2018] Modeling the effects of a dynamic rough sea-surface. 88th SEG Annual Meeting, Expanded Abstracts, 3838–3842.
    [Google Scholar]
  2. Cecconello, E., AsgedomE. G., Orji, O. C., PedersenM. W., & Söllner, W.
    [2018] Modeling scattering effects from time-varying sea-surface based on acoustic reciprocity. Geophysics, 83(2), T49–T68.
    [Google Scholar]
  3. Cecconello, E., Asgedom, E. G., & Söllner, W
    . [2018b] Removal of Time-varying Sea-surface Effects from Seismic Data. 80th EAGE Conference and Exhibition.
    [Google Scholar]
  4. Konuk, T., & Shragge, J.
    [2018] Mimetic finite-difference modeling of time-varying sea-surface effects on seismic data. 88th SEG Annual Meeting, Expanded Abstracts, 3948–3952.
    [Google Scholar]
  5. Laws, R., & Kragh, E.
    [2002] Rough seas and time-lapse seismic. Geophysical Prospecting, 50(2), 195–208.
    [Google Scholar]
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