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Computational Permeability Determination from Pore-Scale Imaging: Sample Size, Mesh and Method Sensitivities

Guibert, Romain and Nazarova, Marfa and Horgue, Pierre and Hamon, Gérald and Creux, Patrice and Debenest, Gérald Computational Permeability Determination from Pore-Scale Imaging: Sample Size, Mesh and Method Sensitivities. (2015) Transport in Porous Media. ISSN 0169-3913

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Official URL: http://dx.doi.org/10.1007/s11242-015-0458-0

Abstract

In this work, a complete work flow from pore-scale imaging to absolute permeability determination is described and discussed. Two specific points are tackled, concerning (1) the mesh refinement for a fixed image resolution and (2) the impact of the determination method used. A key point for this kind of approach is to work on enough large samples to check the representativity of the obtained evaluations, which requires efficient parallel capabilities. Image acquisition and processing are realized using a commercial micro-tomograph. The pore-scale flows are then evaluated using the finite volume method implemented in the open-source platform OpenFOAM®. For this numerical method, the influence of the different aspects mentioned above are studied. Moreover, the parallel efficiency is also tested and discussed. We observe that the level of mesh refinement has a non-negligible impact on permeability tensor. Moreover, increasing the refinement level tends to reduce the gap between the methods of computational measurements. The increase in computation time with the mesh is balanced with the good parallel efficiency of the platform.

Item Type:Article
Additional Information:Thanks to Springer editor. The original PDF of the article can be found at Transport in Porous Media website : http://link.springer.com/journal/11242
HAL Id:hal-01122477
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Total (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Université de Pau et des Pays de l'Adour - UPPA (FRANCE)
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Deposited By: Gerald DEBENEST
Deposited On:04 Mar 2015 08:39

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