Validating the generalized pore network model using micro-CT images of two-phase flow

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Title: Validating the generalized pore network model using micro-CT images of two-phase flow
Authors: Raeini, AQ
Yang, J
Bondino, I
Bultreys, T
Blunt, MJ
Bijeljic, B
Item Type: Journal Article
Abstract: A reliable prediction of two-phase flow through porous media requires the development and validation of models for flow across multiple length scales. The generalized network model is a step towards efficient and accurate upscaling of flow from the pore to the core scale. This paper presents a validation of the generalized network model using micro-CT images of two-phase flow experiments on a pore-by-pore basis. Three experimental secondary imbibition datasets are studied for both sandstone and carbonate rock samples. We first present a quantification of uncertainties in the experimental measurements. Then, we show that the model can reproduce the experimental fluid occupancies and saturations with a good accuracy, which in some cases is comparable with the similarity between repeat experiments. However, high-resolution images need to be acquired to characterize the pore geometry for modelling, while the results are sensitive to the initial condition at the end of primary drainage. The results provide a methodology for improving our physical models using large experimental datasets which, at the pore scale, can be generated using micro-CT imaging of multiphase flow.
Issue Date: 1-Jan-2019
Date of Acceptance: 9-Jul-2019
URI: http://hdl.handle.net/10044/1/72477
DOI: https://doi.org/10.1007/s11242-019-01317-8
ISSN: 0169-3913
Publisher: Springer Science and Business Media LLC
Start Page: 1
End Page: 20
Journal / Book Title: Transport in Porous Media
Copyright Statement: © The Author(s) 2019. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Keywords: Environmental Engineering
0904 Chemical Engineering
0905 Civil Engineering
0102 Applied Mathematics
Publication Status: Published online
Online Publication Date: 2019-07-18
Appears in Collections:Earth Science and Engineering



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