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Abstract

Summary

The importance of pore-scale flow models for practical applications is widely recognized. Due to recent advances in computed microtomography (μCT) the reconstructed samples are now used for direct numerical simulations (DNS) of the flow. This technique gives a unique opportunity for non-destructive characterization; nevertheless a typical study encounters several challenges. The discussion of the most difficult steps of modeling methodology is our first objective.

The description of dynamic phase distribution and behavior of the fluid interface is a problem of primary importance. A regularization technique may affect the results in non-trivial ways; instead the diffuse-interface method offers a thermodynamic description of phase “mixing” zone and handles the morphological changes of interface and related physical effects. A series of model tests including the juxtaposition to analytical solutions for capillary channel flow, estimation of spurious velocity around a droplet and others, are presented. The quantitative demonstration of the method is our second objective.

Among numerous oil recovery applications one can mention the transport properties determination for different physical environment, the study of fluids entrapment/mobilization, the flow patterns at different capillary numbers and viscosity ratios, the emulsion and foamy oil flow, etc. Here we address the analysis of viscous fingering dynamics (oil-water systems, 2D synthetic medium) and the 3D stationary configurations of single and two-phase flow in real porous samples at different Reynolds, Cahn and capillary numbers. In particular, the computations based on μCT image reconstruction aims at the examination of fluid irreducible saturations. This constitutes our third objective. A discussion on the possibilities and limits of the model in quantitative characterization of porous materials is offered. Contribution of the pore-scale DNS to reservoir characterization becomes an increasingly important factor for numerous practical oil recovery applications.

© EAGE Publications BV
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/content/papers/10.3997/2214-4609.20141803
2014-09-08
2024-04-19

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Image Based Pore-scale Models of Flow through Porous Media - Oil Recovery Applications
Conference Proceedings 2014, 1 (2014); https://doi.org/10.3997/2214-4609.20141803
/content/papers/10.3997/2214-4609.20141803
/content/papers/10.3997/2214-4609.20141803
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