Controlled imbibition in a porous medium from a soft wet material (poultice)

Abdelouahab, N. Ben; Gossard, Alban; Marlière, Claire; Faure, Paméla; Rodts, Stéphane; Coussot, Philippe

doi:10.1039/c9sm01345h

Cited by 7 publications

(1 citation statement)

References 26 publications

(25 reference statements)

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“…Imbibition, the process by which a wetting fluid displaces a nonwetting fluid from a porous medium, plays crucial roles in our lives. It underlies key energy processes, such as oil/gas recovery [1][2][3][4] and water management in fuel cells [5]; environmental processes, such as geological CO 2 sequestration [6][7][8][9], groundwater aquifer remediation [10,11], and moisture infiltration in soil and wood [12][13][14][15][16]; and diverse other applications including operation of chemical reactors [17] and wicking in fabrics [18,19], paper microfluidics [20], building materials [21][22][23], coatings [24], and diagnostic devices [25]. As a result, the physics of imbibition has been studied widely.…”

Section: Introductionmentioning

confidence: 99%

Forced Imbibition in Stratified Porous Media: Fluid Dynamics and Breakthrough Saturation

Lu,

Amchin,

Datta

2021

Preprint

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Imbibition, the displacement of a nonwetting fluid by a wetting fluid, plays a central role in diverse energy, environmental, and industrial processes. While this process is typically studied in homogeneous porous media with uniform permeabilities, in many cases, the media have multiple parallel strata of different permeabilities. How such stratification impacts the fluid dynamics of imbibition, as well as the fluid saturation after the wetting fluid breaks through to the end of a given medium, is poorly understood. We address this gap in knowledge by developing an analytical model of imbibition in a porous medium with two parallel strata, combined with a pore network model that explicitly describes fluid crossflow between the strata. By numerically solving these models, we examine the fluid dynamics and fluid saturation left after breakthrough. We find that the breakthrough saturation of nonwetting fluid is minimized when the imposed capillary number Ca is tuned to a value Ca * that depends on both the structure of the medium and the viscosity ratio between the two fluids. Our results thus provide quantitative guidelines for predicting and controlling flow in stratified porous media, with implications for water remediation, oil/gas recovery, and applications requiring moisture management in diverse materials.

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Section: Introductionmentioning

confidence: 99%

Forced Imbibition in Stratified Porous Media: Fluid Dynamics and Breakthrough Saturation

Lu,

Amchin,

Datta

2021

Preprint

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Progress in rheology and hydrodynamics allowed by NMR or MRI techniques

Coussot

2020

Exp Fluids

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We review the uses of nuclear magnetic resonance techniques for experiments with fluids. More precisely we focus on the progress of knowledge in complex flows, rheology of complex fluids, flow in porous media, colloid transport, fluid transfers in complex porous systems, which have been allowed by NMR techniques. These achievements took advantage of the versatility of NMR, which makes it possible to carry out more original measurements than the basic well-known density imaging (MRI). One may thus rely on non-destructive, non-invasive, local velocimetry, local rheometry, statistical approaches of molecular displacements or velocity, distribution of adsorbed or suspended colloids, evolution of the liquid distribution in different states, fluid transfers during drying or imbibition, etc.

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Imbibition and structure of silica nanoporous media characterized by neutron imaging

Léang

Ott

Giorgiutti-Dauphiné

et al. 2020

Journal of Colloid and Interface Science

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Controlled imbibition in a porous medium from a soft wet material (poultice)

Abstract: 2D Magnetic Resonance images showing water imbibition from a shrinking paste to a (larger pores) bead packing at different times.

Cited by 7 publications

References 26 publications

Forced Imbibition in Stratified Porous Media: Fluid Dynamics and Breakthrough Saturation

Forced Imbibition in Stratified Porous Media: Fluid Dynamics and Breakthrough Saturation

Progress in rheology and hydrodynamics allowed by NMR or MRI techniques

Imbibition and structure of silica nanoporous media characterized by neutron imaging

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