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Sok, Robert; Knackstedt, Mark; Sheppard, Adrian; Pinczewski, W.V.; Lindquist, W. Brent; Venkatarangan, A.; Paterson, Lincoln

doi:10.1023/a:1015034924371

Cited by 105 publications

(30 citation statements)

References 43 publications

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“…In various types of rocks the local permeability may be correlated over considerable length-scales due to geological processes. The evidence from numerical modelling based on microscopically faithful descriptions of pore-networks seems to indicate, that multi-phase flow phenomena as imbibition in particular are much more prone for correlationinduced effects than, e.g., simple one-phase permeability [10,42,66,94,141,153,212,257,258,308,326,334]. Typical quantities where this would be visible are relative permeabilities for given saturations, and remaining saturations of the non-wetting fluid.…”

Section: Pore Geometry and Inertiamentioning

confidence: 99%

“…Questions that are of relevance from the interface viewpoint and that have been addressed include pore-scale phenomena as broad pore size distributions [300] and the role of the fluid viscosity ratio of the two fluids in controlling micro-fingering for low C a [335], studies of relative permeablities [221]. Of major interest is the use of micro-structural parameters (from tomography or from other experimental sources) and the analysis of correlations in the pore scale [10,42,125,141,153,212,257,258,308,326]. Typical quantities considered are relative permeabilities and capillary pressures as well as saturation curves.…”

Section: F Microscopic Simulationsmentioning

confidence: 99%

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Imbibition in disordered media

Alava

Dubé

Rost

2004

Advances in Physics

282

333

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The physics of liquids in porous media gives rise to many interesting phenomena, including imbibition where a viscous fluid displaces a less viscous one. Here we discuss the theoretical and experimental progress made in recent years in this field. The emphasis is on an interfacial description, akin to the focus of a statistical physics approach. Coarse-grained equations of motion have been recently presented in the literature. These contain terms that take into account the pertinent features of imbibition: non-locality and the quenched noise that arises from the random environment, fluctuations of the fluid flow and capillary forces. The theoretical progress has highlighted the presence of intrinsic length-scales that invalidate scale invariance often assumed to be present in kinetic roughening processes such as that of a two-phase boundary in liquid penetration. Another important fact is that the macroscopic fluid flow, the kinetic roughening properties, and the effective noise in the problem are all coupled. Many possible deviations from simple scaling behaviour exist, and we outline the experimental evidence. Finally, prospects for further work, both theoretical and experimental, are discussed.

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Section: Pore Geometry and Inertiamentioning

confidence: 99%

Section: F Microscopic Simulationsmentioning

confidence: 99%

Imbibition in disordered media

Alava

Dubé

Rost

2004

Advances in Physics

282

333

View full text Add to dashboard Cite

show abstract

“…Other methods of obtaining detailed, realistic, quantitative models of pore space have been developed, along with sophisticated techniques for computing properties of those models [1,3,4,19,28,30,34,[47][48][49]53,54,59,61]. The imbibition mechanism studied here can be applied in any member of this class of geometrically determinate models.…”

Section: Introductionmentioning

confidence: 99%

Prediction of imbibition in unconsolidated granular materials

Gladkikh

Bryant

2005

Journal of Colloid and Interface Science

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“…The nonwetting blobs assume shapes that are influenced by the pore geometry and topology (e.g., aspect ratio, connectivity, and pore-size variability) and their size can range over several orders of magnitude. Sok et al (2002) have concluded that a more complete description of network topology is needed to accurately predict residual phase saturations. Therefore, it is extremely important to ensure that a pore-network model captures the main features of the pore geometry of porous medium.…”

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confidence: 99%

A New Method for Generating Pore-Network Models of Porous Media

2009

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In this study, we have developed a new method to generate a multi-directional pore network for representing a porous medium. The method is based on a regular cubic lattice network, which has two elements: pore bodies located at the regular lattice points and pore throats connecting the pore bodies. One of the main features of our network is that pore throats can be oriented in 13 different directions, allowing a maximum coordination number of 26 that is possible in a regular lattice in 3D space. The coordination number of pore bodies ranges from 0 to 26, with a pre-specified average value for the whole network. We have applied this method to reconstruct real sandstone and granular sand samples through utilizing information on their coordination number distributions. Good agreement was found between simulation results and observation data on coordination number distribution and other network properties, such as number of pore bodies and pore throats and average coordination number. Our method can be especially useful in studying the effect of structure and coordination number distribution of pore networks on transport and multiphase flow in porous media systems.

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Untitled

Cited by 105 publications

References 43 publications

Imbibition in disordered media

Imbibition in disordered media

Prediction of imbibition in unconsolidated granular materials

A New Method for Generating Pore-Network Models of Porous Media

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