We present an application of Acoustic Full Waveform Inversion to a 2D Line that crosses the North-Western Australian Continental Shelf Margin. The line was acquired by CGG using a Broadseis acquisition system. The line intersects two previously discovered gas fields. A “kinematically crude” initial model was constructed using Migration Velocity analysis. Results from Kirchhoff PreSDM using this initial model showed that significant residual moveout existed in the overburden and at the target level on our common image gathers (CIGs).

2D Acoustic Full Waveform inversion was used to update this initial model using a time domain forward modelling and inversion workflow. A number of strategies have been implemented to successfully perform FWI on this real dataset, including: source estimation strategies, multi-scale inversion, event windowing and a dynamic amplitude correction to account for the invalid acoustic assumption used in the modelling. The kinematically improved velocity model showed dramatically improved alignment of PreSDM common image gathers both in the overburden and at the target level of the two gas fields.


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  1. Beydoun, W.B. and Tarantola, A.
    [1988] First Born and Rytov approximation: Modeling and inversion conditions in a canonical example. Journal of the Acoustical Society of America, 83, 1045–1055.
    [Google Scholar]
  2. Bunks, C., Salek, F.M., Zaleski, S. and Chavent, G.
    [1995] Multiscale seismic waveform inversion. Geophysics, 60(5), 1457–1473.
    [Google Scholar]
  3. Medwin, H.
    [1975] Speed of sound in seawater: A simple equation for releastic parameter. Journal of Acoustic Society of America, 58, 1318–1319.
    [Google Scholar]
  4. Plessix, R.E.
    [2006] A review of the adjoint-state method for computing the gradient of a functional with geophysical applications. Geophysical Journal International, 167(2), 495–503.
    [Google Scholar]
  5. Sirgue, L. and Pratt, R.G.
    [2004] Efficient waveform inversion and imaging: a strategy for selecting temporal frequencies. Geophysics, 69(1), 231–248.
    [Google Scholar]
  6. Tarantola, A.
    [1987] Inverse problem theory: methods for data fitting and model parameter estimation. Elsevier, New York.
    [Google Scholar]
  7. Virieux, J. and Operto, S.
    [2009] An overview of full waveform inversion in exploration geophysics. Geophysics, 74(6), WCC1–WCC26.
    [Google Scholar]
  8. Woodward, M.J., Nichols, D., Zdraveva, O., Whitfield, P. and Johns, T.
    [2008] A decade of tomography. Geophysics, 73(5), VE5–VE11.
    [Google Scholar]
  9. Zhou, W., Brossier, R., Operto, S. and Virieux, J.
    [2014] Acoustic multiparameter full-waveform inversion of diving and reflected waves through a heirarchial scheme. Expanded Abstracts, 84th Annual SEG Meeting (Denver).
    [Google Scholar]

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