1887

Abstract

Summary

Diagenetic changes intensely impact petrophysical properties of reservoir rocks. In particulary permeability and tortuosity. Changes in tortuosity influencing cementation exponent and thus saturation evaluation as well. In fractured and vuggy carbonate reservoirs permeability evaluation is impossible without knowledge of porosity components (intergranular, vugs and fractures). Rock-physics templates allows continous evaluation of the diagenetic changes. This paper demonstrates simple and yet elegant solution for the variable cementation exponent evaluation, involving rock-physics workflows. In addition to this new rock-physics model for fractured and vuggy carbonates has been introduced. The model allows either simulate acoustic respond in the fractured and vuggy carbonates. Alternatively porosity components evaluation can be done using measured shear velocity. The evaluation results have been compared to the Image logs. The comparison shows remarkable parity between rock-physics driven porosity components and Image analysis results.

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/content/papers/10.3997/2214-4609.20132102
2014-02-17
2024-10-09
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References

  1. Kuster, G.T. and Toksoz, M.N.
    [1974] Velocity and attenuation of seismic waves in two phase media. Geophysics, 39, 587–618.
    [Google Scholar]
  2. Dvorkin, J. and Nur, A.
    [1996] Elasticity of high-porosity sandstones: theory for two North Sea datasets. Geophysics, 61, 1363–1370.
    [Google Scholar]
  3. [1996] Elasticity of high-porosity sandstones, Theory for two Sea data sets. Geophysics, 61, 559–564.
    [Google Scholar]
  4. Berryman, J.G.
    [1995] Mixture theories for rock properties. In: Arens, T.J. (Ed.) American geophysical Union Handbook of Physical Constants. AGU, New York, 205–228.
    [Google Scholar]
  5. Johnson, D.L., Schwartz, L.M. and Elata, D.
    [1998] Linear and non-linear elasticity of granular media: stress-induced anisotrophy of a random sphere pack. Trans ASME, 65, 380–385.
    [Google Scholar]
  6. Mindlin, R.D.
    [1949] Compliance of elastic bodies in contact. J. Appl. Mech., 16, 259–268.
    [Google Scholar]
  7. Vorobiev, S.A., Altunbay, M.M., Vorobyev, V.A. and Azlan Shah B.Johari
    [2013] Minimization of disparity between well test and log driven permeability through combination of rock-physics and advanced logs with proper averaging technique. SPE 166037-MS.
    [Google Scholar]
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