A simplified pore-scale model for slow drainage including film-flow effects

Reis, Paula; Moura, Marcel; Linga, Gaute; Rikvold, Per Arne; Toussaint, Renaud; Flekkøy, Eirik Grude; Måløy, Knut Jørgen

doi:10.1016/j.advwatres.2023.104580

Advances in Water Resources

2023

DOI: 10.1016/j.advwatres.2023.104580

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A simplified pore-scale model for slow drainage including film-flow effects

Paula Reis,

Marcel Moura,

Gaute Linga

et al.

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2024

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Cited by 3 publications

References 71 publications

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Influence of sedimentary structure and pore-size distribution on upscaling permeability and flow enhancement due to liquid boundary slip: A pore-scale computational study

Muzemder,

Singh

2024

Advances in Water Resources

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Influence of sedimentary structure and pore-size distribution on upscaling permeability and flow enhancement due to liquid boundary slip: A pore-scale computational study

Muzemder,

Singh

2024

Advances in Water Resources

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Impact of Corner‐Bridge Flow on Capillary Pressure Curve: Insights From Microfluidic Experiments and Pore‐Network Modeling

Lan,

Hu,

Wang

et al. 2024

Water Resources Research

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The capillary pressure curve is essential for predicting multiphase flow processes in geological systems. At low saturations, wetting films form and become important, but how wetting films control this curve remains inadequately understood. In this study, we combine microfluidic experiments with pore‐network modeling to investigate the impact of corner‐bridge flow on the capillary pressure curve in porous media. Using a CMOS camera and a confocal laser scanning microscopy, we directly observe the corner‐bridge flow under quasi‐static drainage displacement, revealing that corner‐bridge flow serves as an additional flow path to drain trapped water. Consequently, the capillary pressure curve shifts toward lower saturations, resulting in a reduced water residual saturation. We establish a theoretical criterion for the occurrence of corner‐bridge flow and develop a pore‐network model to simulate quasi‐static drainage, taking into account this additional flow path. Pore‐network modeling results agree well with our experimental observation. On this basis, we employ our pore‐network model to systematically analyze the impact of corner‐bridge flow on capillary pressure curve across varying porosity, pore‐scale disorder, and system size. Results indicate that the impact of corner‐bridge flow becomes more pronounced as porosity decreases and shape factor increases. Our findings demonstrate that the maximum decrease of water residual saturation is 0.19 when porosity is at its minimum, and the shape factor is at its maximum. This work bridges the gap between the pore‐scale mechanism and capillary pressure behavior and has significant implications for estimating the amount of extractable water and the CO2 storage capacity.

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Multifractal Analysis of 3D Correlated Nanoporous Networks

Carrizales-Velazquez,

Felipe,

Guzmán-Vargas

et al. 2024

Fractal Fract

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In this study, we utilize Monte Carlo methods and the Dual Site-Bond Model (DSBM) to simulate 3D nanoporous networks with various degrees of correlation. The construction procedure is robust, involving a random exchange of sites and bonds until the most probable configuration (equilibrium) is reached. The resulting networks demonstrate different levels of heterogeneity in the spatial organization of sites and bonds. We then embark on a comprehensive multifractal analysis of these networks, providing a thorough characterization of the effect of the exchanges of nanoporous elements and the correlation of pore sizes on the topology of the porous networks. Our findings present compelling evidence of changes in the multifractality of these nanoporous networks when they display different levels of correlation in the site and bond sizes.

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A simplified pore-scale model for slow drainage including film-flow effects

Cited by 3 publications

References 71 publications

Influence of sedimentary structure and pore-size distribution on upscaling permeability and flow enhancement due to liquid boundary slip: A pore-scale computational study

Influence of sedimentary structure and pore-size distribution on upscaling permeability and flow enhancement due to liquid boundary slip: A pore-scale computational study

Impact of Corner‐Bridge Flow on Capillary Pressure Curve: Insights From Microfluidic Experiments and Pore‐Network Modeling

Multifractal Analysis of 3D Correlated Nanoporous Networks

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