1887

Abstract

Summary

In this case study from the Barents Sea, we have used refraction based Full Waveform Inversion (FWI) in an extreme anisotropy regime without the support from well information. We reveal our observations for decoupling the vertical and horizontal velocity, which enables us to achieve good data matching as well as flat gathers, focused images and a geological consistent model. Our frequency cascaded FWI flow results in a high resolution velocity model to the depth of interest, following the faulted crest in great detail, as well as low velocity zones correlating with the bright spots in the seismic image.

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/content/papers/10.3997/2214-4609.201600589
2016-05-30
2024-04-26
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References

  1. Crawley, S., Brandsberg-Dahl, S., McClean, J. and Chemingui, N.
    , [2010], TTI reverse time migration using the pseudo-analytic method, The Leading Edge, 29(11), 1378–1384.
    [Google Scholar]
  2. Grogan, P., A.-M.Østvedt-Ghazi, G. B.Larssen, B.Fotland, K.Nyberg, S.Dahlgren, and T.Eidvin
    , [1999] Structural elements and petroleum geology of the Norwegian sector of the northern Barents Sea. Proceedings of the 5th Petroleum Geology Conference, 247–259, http://dx.doi.org/10.1144/0050247.
    https://doi.org/10.1144/0050247 [Google Scholar]
  3. Prieux, V., R.Brossier, Y.Gholami, S.Operto, J.Virieux, O. I.Barkved, and J. H.Kommedal
    , [2011] On the footprint of anisotropy on isotropic full-waveform inversion: The Valhall case study: Geophysical Journal International, 187(3), 1495–1515.
    [Google Scholar]
  4. Rønholt, G., Korsmo, Ø., Naumann, S., Marinets, S., Brenne, E. and Abbasi, M.F.
    , [2015], Complete wavefield imaging for lithology and fluid prediction in the Barents Sea. 71st SEG Conference and Exhibition.
    [Google Scholar]
  5. Rønholt, G., H.A.Aronsen, T.Hellmann, and S.Johansen
    , [2008] Improved imaging of the Snøhvit field through integration of 4C OBC and dual-azimuth streamer seismic data: First Break, 26(12), 61–66.
    [Google Scholar]
  6. Sherwood, J.W.C., K.Sherwood, H.Tieman, R.Mager, and C.Zhou
    , [2014] Efficient beam velocity model building with tomography designed to accept 3D residuals aligning depth offset gathers. 76th Conference & Exhibition, EAGE, Extended Abstracts, doi:10.3997/2214‑4609.20141153.
    https://doi.org/10.3997/2214-4609.20141153 [Google Scholar]
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