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    Facies-constrained FWI: Toward application to reservoir characterization

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    Type
    Article
    Authors
    Kamath, Nishant
    Tsvankin, Ilya
    Naeini, Ehsan Zabihi
    Date
    2017-11-01
    Online Publication Date
    2017-11-01
    Print Publication Date
    2017-11
    Permanent link to this record
    http://hdl.handle.net/10754/626701
    
    Metadata
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    Abstract
    The most common approach to obtaining reservoir properties from seismic data exploits the amplitude variation with offset response of reflected waves. However, structural complexity and errors in the velocity model can severely reduce the quality of the inverted results. Full-waveform inversion (FWI) has shown a lot of promise in obtaining high-resolution velocity models for depth imaging. We propose supplementing FWI with rock-physics constraints obtained from borehole data to invert for reservoir properties. The constraints are imposed by adding appropriately weighted regularization terms to the objective function. The advantages of this technique over conventional FWI algorithms are shown by conducting synthetic tests for both isotropic and VTI (transversely isotropic with a vertical symmetry axis) models. The medium parameterization for FWI is selected using radiation (scattering) patterns of perturbations in the model parameters.
    Citation
    Kamath N, Tsvankin I, Naeini EZ (2017) Facies-constrained FWI: Toward application to reservoir characterization. The Leading Edge 36: 924–930. Available: http://dx.doi.org/10.1190/tle36110924.1.
    Sponsors
    This work was supported by the Consortium Project on Seismic Inverse Methods for Complex Structures at the Center for Wave Phenomena (CWP) and competitive research funding from the King Abdullah University of Science and Technology (KAUST). We are grateful to Tariq Alkhalifah (KAUST) and Antoine Guitton (CWP) for fruitful discussions. The reproducible numerical examples are generated with the Madagascar open-source software package freely available from www.ahay.org.
    Publisher
    Society of Exploration Geophysicists
    Journal
    The Leading Edge
    DOI
    10.1190/tle36110924.1
    ae974a485f413a2113503eed53cd6c53
    10.1190/tle36110924.1
    Scopus Count
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