Transport in Porous Media

, Volume 29, Issue 1, pp 61–83 | Cite as

Electrical Conductivity and Percolation Aspects of Statistically Homogeneous Porous Media

  • M. A. Ioannidis
  • M. J. Kwiecien
  • I. Chatzis


A method of 3-D stochastic reconstruction of porous media based on statistical information extracted from 2-D sections is evaluated with reference to the steady transport of electric current. Model microstructures conforming to measured and simulated pore space autocorrelation functions are generated and the formation factor is systematically determined by random walk simulation as a function of porosity and correlation length. Computed formation factors are found to depend on correlation length only for small values of this parameter. This finding is explained by considering the general percolation behavior of a statistically homogeneous system. For porosities lower than about 0.2, the dependence of formation factor on porosity shows marked deviations from Archie's law. This behavior results from the relatively high pore space percolation threshold (∼0.09) of the simulated media and suggests a limitation to the applicability of the method to low porosity media. It is additionally demonstrated that the distribution of secondary porosity at a larger scale can be simulated using stochastic methods. Computations of the formation factor are performed for model media with a matrix-vuggy structure as a function of the amount and spatial distribution of vuggy porosity and matrix conductivity. These results are shown to be consistent with limited available experimental data for carbonate rocks.

microstructure reconstruction conductivity percolation carbonates correlation conductivity 


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Copyright information

© Kluwer Academic Publishers 1997

Authors and Affiliations

  • M. A. Ioannidis
    • 1
  • M. J. Kwiecien
    • 1
  • I. Chatzis
    • 1
  1. 1.Porous Media Research Institute, Department of ChemicalEngineering, University of WaterlooWaterlooCanada

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