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Efficiency of a two-step upscaling method for permeability evaluation at Darcy and pore scales

Horgue, Pierre and Guibert, Romain and Gross, Hervé and Creux, Patrice and Debenest, Gérald Efficiency of a two-step upscaling method for permeability evaluation at Darcy and pore scales. (2015) Computational Geosciences, vol. 19 (n° 6). pp. 1159-1169. ISSN 1420-0597

(Document in English)

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Official URL: http://dx.doi.org/10.1007/s10596-015-9531-6


This work presents a new subdivision method to upscale absolute permeability fields. This process, called two-step method, consists in (i) solving microscale equations on subdomains obtained from the full domain regular decomposition and (ii) solve a second upscaling with Darcy’s law on the permeability fields obtained in the first step. The micro-scale equations used depend on the case studied. The two-step upscaling process is validated on randomly-generated Darcyscale permeability fields by measuring the numerical error induced by upscaling. The method is then applied to real domains obtained from sandstone microtomographic images. The method specificities due to pore-space structure are discussed. The main advantage of the two-step upscaling method resides in the drastic reduction of computational costs (CPU time and memory usage) while maintaining a numerical error similar to that of other upscaling procedures. This new upscaling method improves permeability predictions by the use of finer meshes or larger sample volumes.

Item Type:Article
Additional Information:Thanks to Springer editor. The definitive version is available at http://link.springer.com/ The original PDF of the article can be found at : http://link.springer.com/article/10.1007%2Fs10596-015-9531-6
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 > Advanced Resources and Risk Technology - AR2Tech (USA)
Other partners > Université de Pau et des Pays de l'Adour - UPPA (FRANCE)
Laboratory name:
Deposited By: Gerald DEBENEST
Deposited On:27 Jun 2016 07:50

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