Effects of Pore-Scale Geometry and Wettability on Two-Phase Relative Permeabilities within Elementary Cells

摘要: We study the relative role of complex pore space geometry and wettability solid matrix on quantification permeabilities elementary cells porous media. These constitute a key element upon which upscaling frameworks are typically grounded. In our we focus state immiscible two-phase flow taking place at scale cells. Pressure-driven following simultaneous co-current injection water oil is numerically solved for suite regular stochastically generated two-dimensional explicit with fixed porosity sharing main topological/morphological features. show that randomly significantly influenced by formation preferential percolation paths, called principal pathways, giving rise to strongly nonuniform distribution fluid fluxes. pathways result spatially variable resistance random structures exert fluid. The overall effect diverse organization as driven given realization cell, larger than host rock. contrast what can be observed analyzed, display clear trend contact angle investigated scale.