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Research on the Influence of Capillary Forces on a Liquid Flow in Fractures with Nonuniform Apertures

  • A. V. BlonskyEmail author
  • D. A. Mitrushkin
Article
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Abstract

A physicomathematical model of a two-phase liquid flow in a discrete fracture network—taking into account a nonuniform fracture aperture, flow exchange between fractures, capillary and gravitational forces—is presented. Capillary forces are described by the Young-Laplace model that takes into account the rock wetting angle and surface tension. The influence of the structure of the conducting channels in a fracture, capillary and gravitational forces, and the pressure gradient, as well as the water-and-oil viscosity ratio on the flow dynamics and the oil recovery factor, is explored. It is shown that capillary forces and the structure of channels in a fracture can play a decisive role in the process of oil displacement by water.

Keywords:

discrete fracture networks multiphase flows capillary forces flow in a fracture with a nonuniform aperture 

Notes

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  1. 1.Moscow Institute of Physics and Technololgy (MIPT) Center for Engineering and TechnologyDolgoprudnyRussia

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