Quasistatic fluid-fluid displacement in porous media: Invasion-percolation through a wetting transition

Primkulov, Bauyrzhan K.; Talman, Stephen; Khaleghi, Keivan; Shokri, Alireza Rangriz; Chalaturnyk, Rick; Zhao, Benzhong; MacMinn, Christopher W.; Juanes, Rubén

doi:10.1103/physrevfluids.3.104001

Cited by 70 publications

(117 citation statements)

References 41 publications

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“…Many of the usual approaches to the problem (such as the traditional invasion percolation algorithm [39]) do not take such effects into consideration and this can lead to large errors in the estimation of quantities such as the phase saturation and other related measures that depend on it (e.g., water retention and relative permeability curves). There is a clear need for a continuation of the important efforts initiated by other researchers [46][47][48][49]51] in the direction of extending the traditional models to include film flow effects for a more accurate description of porous media flows.…”

Section: Discussionmentioning

confidence: 99%

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Connectivity enhancement due to film flow in porous media

et al. 2019

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We study the effects of connectivity enhancement due to film flow phenomena on the drainage of an artificial porous medium and the relative influence of gravity for such effects. The medium is initially fully saturated with a liquid (wetting phase), which is displaced by air (nonwetting phase). Our setup allows us to directly visualize the dynamics of the flow and, in particular, to pinpoint which pore invasion events are due to film flow phenomena. We have observed the formation of an active zone behind the liquid-air interface, inside which film flow drainage events are more likely to occur. Understanding the basic mechanisms of film flow in artificial porous media is of relevance for the analysis of real three-dimensional porous systems, in which gravity cannot be neglected and film flow is bound to be present.

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Section: Discussionmentioning

confidence: 99%

“…An important step in the modeling of two-phase flows was given recently in Ref. [51] in which the incorporation of wettability and film flow effects into a model similar to invasion percolation has led to the appropriate description of quasi-2D displacements in porous media, particularly in the challenging strong imbibition regime.…”

Section: Introductionmentioning

confidence: 99%

Connectivity enhancement due to film flow in porous media

et al. 2019

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“…Multiphase flow in porous media has been studied both experimentally using micromodels [12,15,16,[25][26][27] and numerically by a range of simulation methods. Pore-network (PN) models, though computationally efficient, have limited predictive capability and accuracy due to simplification of pore geometries and/or flow equations [28][29][30]. Statistical models including diffusionlimited aggregation (DLA), anti-DLA, and invasion percolation (IP) have been used to simulate VF, SD, and CF, respectively.…”

Section: Introductionmentioning

confidence: 99%

Disorder characterization of porous media and its effect on fluid displacement

et al. 2019

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We investigate the effects of topological disorder and wettability on fluid displacement in porous media. A modified disorder index I v is proposed to characterize the disorder of porous media. By changing I v , different displacement patterns (stable displacement and fingering) under the same flow condition and fluid property are obtained. We analytically demonstrate how increase in disorder promotes fingering due to uneven distribution of local capillary pressure. It is shown that the displacement efficiency for different wettability conditions and disorder well correlates with the distribution of local capillary pressure. A power-law relation between fluid-fluid interfacial length and saturation of invading fluid is proposed by taking geometry into account, where the parameters in power-law relation can be predicted by the capillary index, I c , unifying the effects of topological disorder and wettability.

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“…As one of the factors that influences multiphase flow in porous media, wettability (the relative affinity of the substrate to each of the fluids, and measured by the contact angle θ ) has been studied for decades. While much is now known about the role of wettability on multiphase displacements in porous media [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47], fundamental gaps remain in the context of grain-scale mechanisms and their macroscale consequences. Given the importance of capillarity on the fracture of granular packs [10,14,21,22,24], here we focus on the impact of wetting properties on the emergence of such fracture patterns.…”

mentioning

confidence: 99%

“…The model employs an analog of the pore network geometry, where resistors, batteries, and capacitors are responsible for viscous, out-of-plane, and in-plane Laplace pressure drops, respectively. The fluid-fluid interface is represented as a moving capacitor-when the interface advances, the Laplace pressure increases until it encounters a burst (equivalent to a Haines jump), touch (touches the nearest particle), or overlap event (coalesces with a neighboring interface) [35,36,43]. These events determine how the interface advances, enlisting one or more new particles when a node on the interface reaches its filling capacity and becomes unstable.…”

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confidence: 99%

Jamming transition and emergence of fracturing in wet granular media

Meng

Primkulov

Yang

et al. 2020

Phys. Rev. Research

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We study fluid-induced deformation of granular media, and the fundamental role of capillarity and wettability on the emergence of fracture patterns. We develop a hydromechanical computational model, coupling a "moving capacitor" dynamic network model of two-phase flow at the pore scale with a discrete element model of grain mechanics. We simulate the slow injection of a less viscous fluid into a frictional granular pack initially saturated with a more viscous, immiscible fluid. We study the impact of wettability and initial packing density, and find four different regimes of the fluid invasion: cavity expansion and fracturing, frictional fingers, capillary invasion, and capillary compaction. We explain fracture initiation as emerging from a jamming transition, and synthesize the system's behavior in the form of a phase diagram of jamming for wet granular media.

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Quasistatic fluid-fluid displacement in porous media: Invasion-percolation through a wetting transition

Cited by 70 publications

References 41 publications

Connectivity enhancement due to film flow in porous media

Connectivity enhancement due to film flow in porous media

Disorder characterization of porous media and its effect on fluid displacement

Jamming transition and emergence of fracturing in wet granular media

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