Steady-state three-phase flow in a mixed-wet porous medium: A pore-scale X-ray microtomography study

Alhosani, Abdulla; Selem, Ahmed M.; Foroughi, Sajjad; Bijeljic, Branko; Blunt, Martin J.

doi:10.1016/j.advwatres.2023.104382

Cited by 7 publications

(2 citation statements)

References 69 publications

(94 reference statements)

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“…While the existence of mixed wettability is known in the literature, its pore-scale effects on fluid flow are not fully understood. 23 Recent studies on multiphase fluid flow in porous formations with mixed wettability have shown a significant impact on capillary pressure and saturation distribution, [24][25][26][27][28][29] which may lead to variations in reservoir performance. The complexity of mixed wettability makes it challenging to accurately assess its impact, as it may get confused with single water-wet and oil-wet scenarios.…”

Section: Introductionmentioning

confidence: 99%

Novel fabrication of mixed wettability micromodels for pore-scale studies of fluid–rock interactions

AlOmier,

Cha,

Ayirala

et al. 2024

Lab Chip

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Section: Introductionmentioning

confidence: 99%

Novel fabrication of mixed wettability micromodels for pore-scale studies of fluid–rock interactions

AlOmier,

Cha,

Ayirala

et al. 2024

Lab Chip

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“…The infiltration of water into soil results in a process known as twophase flow, which has been extensively studied in various engineering fields such as oil extraction, waste treatment, and groundwater pollution [4,5]. Experimental techniques using different sensors, such as two-dimensional (2D, e.g., [6][7][8]) and three-dimensional (3D, e.g., [9][10][11][12][13]) methods, have been used to examine two-phase flow. However, these methods are destructive, costly, and not easily repeatable.…”

Section: Introductionmentioning

confidence: 99%

Simulating Two-Phase Seepage in Undisturbed Soil Based on Lattice Boltzmann Method and X-ray Computed Tomography Images

Jiang,

Lin,

Chen

et al. 2024

Sensors

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The two-phase seepage fluid (i.e., air and water) behaviors in undisturbed granite residual soil (U-GRS) have not been comprehensively studied due to a lack of accurate and representative models of its internal pore structure. By leveraging X-ray computed tomography (CT) along with the lattice Boltzmann method (LBM) enhanced by the Shan–Chen model, this study simulates the impact of internal pore characteristics of U-GRS on the water–gas two-phase seepage flow behaviors. Our findings reveal that the fluid demonstrates a preference for larger and straighter channels for seepage, and as seepage progresses, the volume fraction of the water/gas phases exhibits an initial increase/decrease trend, eventually stabilizing. The results show the dependence of two-phase seepage velocity on porosity, while the local seepage velocity is influenced by the distribution and complexity of the pore structure. This emphasizes the need to consider pore distribution and connectivity when studying two-phase flow in undisturbed soil. It is observed that the residual gas phase persists within the pore space, primarily localized at the pore margins and dead spaces. Furthermore, the study identifies that hydrophobic walls repel adjacent fluids, thereby accelerating fluid movement, whereas hydrophilic walls attract fluids, inducing a viscous effect that decelerates fluid flow. Consequently, the two-phase flow rate is found to increase with then-enhanced hydrophobicity. The apex of the water-phase volume fraction is observed under hydrophobic wall conditions, reaching up to 96.40%, with the residual gas-phase constituting 3.60%. The hydrophilic wall retains more residual gas-phase volume fraction than the neutral wall, followed by the hydrophobic wall. Conclusively, the investigations using X-ray CT and LBM demonstrate that the pore structure characteristics and the wettability of the pore walls significantly influence the two-phase seepage process.

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Viscous-dependent fingering dynamics of gas invading into multi-fluids

Yang,

Li,

Suo

et al. 2024

Advances in Water Resources

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Steady-state three-phase flow in a mixed-wet porous medium: A pore-scale X-ray microtomography study

Cited by 7 publications

References 69 publications

Novel fabrication of mixed wettability micromodels for pore-scale studies of fluid–rock interactions

Novel fabrication of mixed wettability micromodels for pore-scale studies of fluid–rock interactions

Simulating Two-Phase Seepage in Undisturbed Soil Based on Lattice Boltzmann Method and X-ray Computed Tomography Images

Viscous-dependent fingering dynamics of gas invading into multi-fluids

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