Physics-Driven Investigation of Wettability Effects on Two-Phase Flow in Natural Porous Media: Recent Advances, New Insights, and Future Perspectives

Leveraging high-fidelity lattice Boltzmann simulations combined with analytical modeling, we establish a comprehensive micro-scale description of immiscible two-phase fluid displacement occurring during favorable and unfavorable displacement conditions in a heterogeneous porous medium under a wide r...

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Bibliographic Details
Published in:Transport in porous media 2021-10, Vol.140 (1), p.85-106
Main Authors: Bakhshian, Sahar, Rabbani, Harris Sajjad, Shokri, Nima
Format: Article
Language:English
Subjects:
Boundary conditions
Civil Engineering
Classical and Continuum Physics
Contact angle
Corner flow
Displacement
Earth and Environmental Science
Earth Sciences
Enhanced oil recovery
Geotechnical Engineering & Applied Earth Sciences
Heterogeneity
Hydrogeology
Hydrology/Water Resources
Imbibition
Industrial Chemistry/Chemical Engineering
Interface stability
Interfaces
Investigations
Mathematical models
Miscibility
Porous media
Saturation
Two phase flow
Velocity
Viscosity
Wettability
Wetting
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Summary:Leveraging high-fidelity lattice Boltzmann simulations combined with analytical modeling, we establish a comprehensive micro-scale description of immiscible two-phase fluid displacement occurring during favorable and unfavorable displacement conditions in a heterogeneous porous medium under a wide range of wettability. The emergence of corner-flow events is found to promote a compact displacement pattern, leading to a maximum recovery efficiency of the defending fluid under the strong imbibition for both favorable and unfavorable displacement scenarios. Saturation of the invading fluid manifests the crossover in the displacement patterns from fingering to stable flow, as the wetting varies from drainage to strong imbibition. Quantifying the corner flow under both displacement conditions and strong imbibition reveals that corner-flow events are preferentially hosted by small-size pores and predominantly concentrated ahead of the primary fluid–fluid interface without perturbing the stability of the pore-body displacement. In addition to the numerical simulation, we developed an analytical model that can predict the saturation profile of invading fluid under given boundary conditions. Our study elucidates the fundamental control and interaction of wettability and heterogeneity on the dynamics of immiscible fluid displacement in porous media with implications in the description of subsurface flow and processes.
ISSN:0169-3913
1573-1634
DOI:10.1007/s11242-021-01597-z