1887

Abstract

Summary

We have developed an anisotropic elastic rock physics model which models a continuum between sands and shales. The model uses both the joint SCA/DEM model and the Hudson model to add stiff and aligned soft pores in the rock frame. The model adjusts the aspect ratio and quantity of the soft pores to control the anisotropy of the rock. The initial stiffness of the rock is controlled by the biconnected porosity point (used by the SCA/DEM model) of the rock frame allowing both sands and shales to be modelled. The model has been tested against sand and shale data from well logs in the Barents Sea, where an accurate fit between the model and well log data was obtained.

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/content/papers/10.3997/2214-4609.201701216
2017-06-12
2024-04-19
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References

  1. Berryman, J.
    , 1980, Long-wavelength propagation in composite elastic media I. Spherical inclusions. Journal of the Acoustical Society of America.68, 1809–1819.
    [Google Scholar]
  2. Cheng, C.H.
    [1993] Crack models for transversely anisotropic media. J. Geophys. Res., 98, 675–684.
    [Google Scholar]
  3. RuizF. and A.Cheng
    [2010] A rock physics model for tight gas sand. The Leading Edge, 29, 1484–1489.
    [Google Scholar]
  4. Hudson, J.A.
    [1980] Overall properties of a cracked solid. Mathematical Proceedings of the Cambridge Philosophical Society.88, 371–384.
    [Google Scholar]
  5. Norris, A.N.
    [1985] A differential scheme for the effective moduli of composites, Mechanics of materials, 4, 1–16.
    [Google Scholar]
  6. ThomsenL.
    [1986] Weak elastic anisotropy. Geophysics, 51, 1954–1966.
    [Google Scholar]
  7. Tsvankin, I.
    [1997] Anisotropic parameters and P-wave velocity for orthorhombic media: Geophysics. 62, 1292–1309.
    [Google Scholar]
  8. Ellis, M.H.
    [2008] Joint Seismic and Electrical Measurements of Gas Hydrates in Continental Margin Sediments. Ph.D thesis, University of Southampton.
    [Google Scholar]
  9. Sheng, P.
    [1990] Effective-medium theory of sedimentary rocks, Physical Review B, 41, 4507–4512.
    [Google Scholar]
  10. White, J.E.
    [1983] Underground Sound. Elsevier.
    [Google Scholar]
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