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Research of capillary forces influence on liquid flow in fractures within non-uniform aperture
 
PIIS023408790000609-3-1
DOI10.31857/S023408790000609-3
Publication type Article
Status Published
Authors
Artem Blonsky 
Affiliation: MIPT Center for Engineering and Technology
Address: Russian Federation, Moscow
Dmitry Mithrushkin
Affiliation: MIPT Center for Engineering and Technology
Address: Russian Federation
Journal nameMatematicheskoe modelirovanie
EditionVolume 30 Number 9
Pages72-86
Abstract

The paper presents a mathematical model of a two-phase flow in a discrete fracture network, accounting for non-uniform fracture aperture, flow exchange between fractures, capillary and gravitational forces. Capillary forces are described by Young-Laplace model, which takes into account rock wettability and surface tension. The influence of the channel structure in a fracture, capillary and gravity forces, pressure gradient, the ratio of water and oil viscosities on flow dynamics and the oil recovery factor is explored. Capillary forces and the structure of channels in a fracture are proved to play a decisive role in oil displacement process.

Abstract (other)The paper presents a mathematical model of a two-phase flow in a discrete fracture network, accounting for non-uniform fracture aperture, flow exchange between fractures, capillary and gravitational forces. Capillary forces are described by Young-Laplace model, which takes into account rock wettability and surface tension. The influence of the channel structure in a fracture, capillary and gravity forces, pressure gradient, the ratio of water and oil viscosities on flow dynamics and the oil recovery factor is explored. Capillary forces and the structure of channels in a fracture are proved to play a decisive role in oil displacement process.
Keywordsdiscrete fracture network, multiphase flow, capillary forces, flow in fracture within non-uniform aperture
Received28.09.2018
Publication date04.10.2018
Number of characters657
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