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Statistical model of dispersion in a 2-D glass micromodel

Ghazanfari, M. H ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.2118/113343-ms
  3. Publisher: Society of Petroleum Engineers (SPE) , 2008
  4. Abstract:
  5. Microscopic Visualization of the porous media can provide valuable information to enhance understanding of pore-scale transport phenomena. Here, a micromodel which its grains and pores are non-uniform in size, shape and distribution is considered as porous medium. The pore size distribution as well as pore length distribution was extracted by applying an image analysis technique. A two-dimensional random network model of the micromodel has been constructed which the nonuniformity is considered by assigning measured distribution functions. The random particle method was applied for correlating and predicting dispersion coefficients based on probabilistic approaches. Statistical derivations result in a new functional dependence for the longitudinal and transverse dispersion coefficients in terms of pore velocity and ensemble averages. Prediction from derived model for both longitude and transverse dispersion is in close agreement with the experimental data. Despite the simplicity of the proposed network model, its accurate prediction provides some confidence that it can be considered as a reasonable approximation of the complex nature of porous media with reliable predictive capability. Copyright 2008, Society of Petroleum Engineers
  6. Keywords:
  7. Computer system recovery ; Dispersions ; Forecasting ; Particle size analysis ; Pore size ; Porous materials ; Dispersion coefficient ; Functional dependence ; Image analysis techniques ; Microscopic visualization ; Pore length distribution ; Predictive capabilities ; Probabilistic approaches ; Transverse dispersion ; Distribution functions
  8. Source: 16th SPE/DOE Improved Oil Recovery Symposium 2008 - ""IOR: Now More Than Ever."", Tulsa, OK, 19 April 2008 through 23 April 2008 ; Volume 2 , 2008 , Pages 527-539 ; 9781605601656 (ISBN)
  9. URL: https://onepetro.org/SJ/article-abstract/15/02/301/191944/Statistical-Model-for-Dispersion-in-a-2D-Glass?redirectedFrom=fulltext