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- Title
Unified Model of Drainage and Imbibition in 3D Fractionally Wet Porous Media.
- Authors
Motealleh, Siyavash; Ashouripashaki, Mandana; DiCarlo, David; Bryant, Steven
- Abstract
We develop a grain-based model for capillarity controlled displacement within 3D fractionally wet porous media. The model is based on a novel local calculation of the position of stable fluid-fluid interfaces in contact with multiple spherical grains of arbitrary contact angles. The interface is assumed to be locally spherical between bulk phases; the interface is assumed to be toroidal between pairs of grains (surfaces of pendular rings). Because the calculation of interface position is entirely local and grain-based, it provides a single, generalized, geometric basis for computing pore-filling events during drainage as well as imbibition with both Melrose events (merging of two interfaces) and Haines events (geometric instability). The model is validated against a series of drainage/imbibition experiments (oil/water) on fractionally wet porous media prepared by mixing oil-wet grains with water-wet grains.
- Subjects
IMBIBITION (Chemistry); DRAINAGE research; WETTING; POROUS materials; FLUID dynamics; DISPLACEMENT (Mechanics)
- Publication
Transport in Porous Media, 2013, Vol 99, Issue 3, p581
- ISSN
0169-3913
- Publication type
Article
- DOI
10.1007/s11242-013-0201-7