1887

Abstract

Summary

In this paper, a theoretical rock physics model is presented to estimate the effective elastic properties of organic-rich shale. A clay-kerogen mixture is set as the background material, and is simulated using anisotropic self-consistent (SCA) and differential effective-medium (DEM) theories. Both clay-related pores and brittle minerals related pores are considered in the modelling. Comparison of estimated results with experimental measurements indicates the feasibility of using SCA+DEM to simulate organic-rich shale. We also analyse the effects of anisotropy on the characterization of shale brittleness using the proposed model, and we discuss the influence of the alignment of each clay-kerogen block on anisotropic properties.

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/content/papers/10.3997/2214-4609.20141349
2014-06-16
2024-04-26
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References

  1. Bandyopadhyay, K.
    [2009] Seismic anisotropy-geological causes and its implications to reservior geophysics. Ph.D. thesis, Stanford University.
    [Google Scholar]
  2. HornbyB E, Schwartz, L M, HudsonJ A.
    [1994] Anisotropic effective-medium modeling of the elastic properties of shales. Geophysics, 59, 1570–1583.
    [Google Scholar]
  3. Johansen, T, OleRuud B, JakobsenM.
    [2004]. Effect of grain scale alignment on seismic anisotropy and reflectivity of shales. Geophysical Prospecting, 52(2), 133–149.
    [Google Scholar]
  4. Vernik, L. and Landis, C.
    [1996] Elastic anisotropy of source rocks: Implications for hydrocarbon generation and primary migration. AAPG Bulletin, 80(4), 531–544.
    [Google Scholar]
  5. Vernik, L. and Liu, X.
    [1997] Velocity anisotropy in shales: A petrophysical study. Geophysics, 62(2), 521–532.
    [Google Scholar]
  6. SayersC.
    [1994] The elastic anisotropy of shales. Journal of geophysical research, Vol.99, 767–774.
    [Google Scholar]
  7. [2013] The effect of kerogen on the elastic anisotropy of organic-rich shales. Geophysics, 78(2): D65–D74.
    [Google Scholar]
  8. SondergeldC. et al.
    [2010], Micro-structural studies of gas shales. SPE Unconventional Gas Conference.
    [Google Scholar]
  9. WuX, ChapmanM, LiX Y, et al.
    [2012]Anisotropic Elastic modelling for organic shales.74th EAGE Conference & Exhibition
    [Google Scholar]
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