In recent years full-waveform inversion has become very popular as a velocity model building tool, especially in areas with complex overburden. Inversion of OBC data usually provides better resolution of the velocity models than one of streamer data due to better azimuth coverage, illumination and longer offsets. In this paper, we investigate the effect of the regularization term in the misfit function on the inversion results. For this purpose, we establish two reference cases on OBC and streamer data, where inversion results are obtained using similar parameter setups. In these reference tests gradients are pre-conditioned by conventional 3D gradient operator of the same size. Inversion of OBC data results in the best resolved velocity model. When we precondition the gradient by the regularization instead of a 3D gaussian operator, the resolution of the velocity model obtained from FWI on streamer data considerably improves. The acquisition footprint reduces. The details in the velocity model are somewhat similar to those visible on the reference case from OBC data.


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  1. Foss, S.-K., Karlsen, E.S., Mispel, J, Straith, K.R., Merten, D. and EttrichN.
    2017, From Seismic Reflections to Diffractions – Case Study of Interpretation for Development of a Complex Gas Reservoir. 79th EAGE annual meeting, Expanded Abstracts.
    [Google Scholar]
  2. MaaøF. A., Ravaut, C., PedersenØ.
    , 2014, Waveform Inversion of Sparsely Sampled Data over a Shallow Gas Area, 76th EAGE Conference and Exhibition 2014
    [Google Scholar]
  3. Ravaut, C., MaaøF. A., Mispel, J., Osen, A., Warner, M., Guasch, L., NangooT.
    2017, Imaging Beneath a Gas Cloud in the North Sea without Conventional Tomography, 79th EAGE Conference and Exhibition 2017, Expanded Abstracts.
    [Google Scholar]
  4. Sirgue, L., BarkvedO.I., GestelJ.P.V., AskimO.J., KommedalJ.H.
    , 2009, 3D waveform inversion on Valhall wide azimuth OBC, 71st EAGE Conference & Exhibition.
    [Google Scholar]
  5. Van den BergP. M. and AriaAbubakar
    , 2001Contrast source inversion: state of the art, journal of electromagnetic Waves and applications15(11): 1503–1505.
    [Google Scholar]
  6. Warner, M. and GuaschL.
    (2014)Adaptive Waveform inversion 84th SEG Annual meeting
    [Google Scholar]
  7. Warner, M., Ratcliffe, A., Nangoo, T., Morgan, J., Umpleby, A., Shah, N., … & Conroy, G
    , 2013, Anisotropic 3D full-waveform inversion. Geophysics, 78(2), R59–R80
    [Google Scholar]

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