1887

Abstract

Summary

Current methodologies to characterize fractures at the reservoir scale have serious limitations in spatial resolution. Here, we propose to estimate both the spatial distribution and physical properties of fractures using full waveform inversion (FWI) of multicomponent surface seismic data. An effective orthorhombic medium with five clusters of vertical fractures distributed in a checkboard fashion is used to test the algorithm. To better understand the inversion results, we analyze the FWI radiation patterns of the fracture weaknesses. A shape regularization term is added to the objective function to improve the inversion for the horizontal weakness, which is otherwise poorly constrained. Alternatively, a simplified model of penny-shaped cracks is used to reduce the nonuniqueness in the inverted weaknesses and achieve a faster convergence.

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/content/papers/10.3997/2214-4609.201701247
2017-06-12
2021-06-20
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References

  1. Bakulin, A., Grechka, V. and Tsvankin, I.
    [2000a] Estimation of fracture parameters from reflection seismic data-Part I: HTI model due to a single fracture set. Geophysics, 65(6), 1788–1802.
    [Google Scholar]
  2. [2000b] Estimation of fracture parameters from reflection seismic data-Part II: Fractured models with orthorhombic symmetry. Geophysics, 65(6), 1803–1817.
    [Google Scholar]
  3. Gallardo, L.A. and Meju, M.A.
    [2003] Characterization of heterogeneous near-surface materials by joint 2D inversion of dc resistivity and seismic data. Geophysical Research Letters, 30(13).
    [Google Scholar]
  4. Masmoudi, N., Tsvankin, I. and Alkhalifah, T.
    [2016] Feasibility of high-resolution fracture characterization using waveform inversion. In: 78th EAGE Conference and Exhibition 2016.
    [Google Scholar]
  5. Oh, J.W. and Alkhalifah, T.
    [2016] Elastic orthorhombic anisotropic parameter inversion: An analysis of parameterization. Geophysics, 81(6), C279–C293.
    [Google Scholar]
  6. Schoenberg, M.
    [1980] Elastic wave behavior across linear slip interfaces. The Journal of the Acoustical Society of America, 68(5), 1516–1521.
    [Google Scholar]
  7. Tsvankin, I. and Grechka, V.
    [2011] Seismology of azimuthally anisotropic media and seismic fracture characterization. Society of Exploration Geophysicists.
    [Google Scholar]
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