Prediction of the capillary pressure of fluid surrounding a cylinder representing an idealized rock structure in porous media

Type Article
Original languageEnglish
Article number442
Number of pages9
JournalThe European Physical Journal Plus
Volume137
Issue number4
Early online date08 Apr 2022
DOI
Publication statusPublished - 08 Apr 2022
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Abstract

Liquids in oil-bearing porous media assume complex shapes that depend on the reservoir characteristics and the wetting properties of the liquid. The wide variation in the geometry of rock formations makes it difficult to accurately predict the capillary pressure of small volumes of liquid and hence the likelihood of being able to move it. Here, we consider the situation in which a small volume of liquid surrounds an upright cylinder on a flat substrate and predict the shape that the liquid takes and its capillary pressure. We validate our predictions by comparing with Surface Evolver simulations for a range of contact angles and cylinder radii.

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