International Journal of Multiphase Flow, ( ISI ), Volume (61), No (1), Year (2014-1) , Pages (14-27)

Title : ( Pore-scale modeling of non-isothermal two phase flow in 2D porous media: Influences of viscosity, capillarity, wettability and heterogeneity )

Authors: Hossein Ali Akhlaghi Amiri , Aly A. Hamouda ,

Citation: BibTeX | EndNote

Abstract

This paper addresses simulation of non-isothermal water-oil displacements in porous media at porescale. The simulation approach was done by coupling Cahn–Hilliard phase field and heat equations using COMSOL Multiphysics™. Finite element method with interfacial adaptive mesh refinement was employed to solve the equation system. The approach was first applied to a non-isothermal Poiseuille flow through channel, for verification. The model was further developed to study flow instabilities in displacements through uniform and dual permeability media. Simulations were performed for the uniform medium with different viscosity ratios (M) and capillary numbers (Ca), ranging three orders of magnitude. A stability phase diagram for log–logCa–M was constructed and showed a good agreement with those obtained by micro-model experiments. Hot water injection in pore scale revealed that active water fingers have a major role in propagating heat to the immobile oil. Fluid displacements in a dual-permeability medium at different Ca and M showed that lowering M exacerbates the water channeling effect in high permeability layer and lowering Ca may result in higher water sweep efficiency due to capillary dominant flow. This work demonstrated the feasibility of polymer gel treatment in dual-permeability medium to increase the resistant of the high permeability layer, hence divert water to the matrix, e.g., un-swept areas.

Keywords

, Two-phase flow, Phase field method, Heat transfer, Adaptive mesh refinement, Viscosity ratio, Capillary number, Fingering, Wettability, Dual-permeability
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@article{paperid:1063012,
author = {Akhlaghi Amiri, Hossein Ali and Aly A. Hamouda},
title = {Pore-scale modeling of non-isothermal two phase flow in 2D porous media: Influences of viscosity, capillarity, wettability and heterogeneity},
journal = {International Journal of Multiphase Flow},
year = {2014},
volume = {61},
number = {1},
month = {January},
issn = {0301-9322},
pages = {14--27},
numpages = {13},
keywords = {Two-phase flow; Phase field method; Heat transfer; Adaptive mesh refinement; Viscosity ratio; Capillary number; Fingering; Wettability; Dual-permeability},
}

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%0 Journal Article
%T Pore-scale modeling of non-isothermal two phase flow in 2D porous media: Influences of viscosity, capillarity, wettability and heterogeneity
%A Akhlaghi Amiri, Hossein Ali
%A Aly A. Hamouda
%J International Journal of Multiphase Flow
%@ 0301-9322
%D 2014

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