期刊
APPLIED MATHEMATICAL MODELLING
卷 75, 期 -, 页码 481-493出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.apm.2019.05.050
关键词
Permeability; Capillary pressure; Multiphase; Fluids; Heterogeneity
There is a growing interest in fluid flow through rocks which show a large range, or heterogeneity, in pore sizes (from order tens of nanometres up to a hundred microns) which lead to small porosities and permeabilities. Digital imagery of these rocks yield under-resolved pore structures or a gray-scale sample. In this work we use the gray-scale lattice Boltzmann (LB) method to determine flow of two, immiscible fluids through such three-dimensional porous media. The method yields transient and equilibrium flow fields from which we determine relative permeability and capillary pressure curves. The method is applied to real digital rock data to extract flow properties through the sample. Both single phase and multiphase LB simulations are carried out. We find low permeabilities (of the order of milli-Darcy) together with large residual saturations (between 50-75%), indicative of a rock sample which has void regions remote from each other, i.e. either disconnected or connected by very narrow pore throats. Crown Copyright (C) 2019 Published by Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据