Local Wettability Reversal during Steady-State Two-Phase Flow in Porous Media

Details Local Wettability Reversal during Steady-State Two-Phase Flow in Porous Media Local Wettability Reversal during Steady-State Two-Phase Flow in Porous Media

2012-02-04

arxiv.org/abs/1202.0887v1

Phys. Rev. E 84, 037303 (2011)

Physics

Fluid Dynamics

Scientific paper

10.1103/PhysRevE.84.037303

We study the effect of local wettability reversal on remobilizing immobile fluid clusters in steady-state two-phase flow in porous media. We consider a two dimensional network model for porous medium and introduce a wettability alteration mechanism. A qualitative change in the steady state flow patterns, destabilizing the percolating and trapped clusters, is observed as the system wettability is varied. When capillary forces are strong a finite wettability alteration is necessary to move the system from single-phase to two-phase flow regime. For the case of both phases being mobile we find a linear relationship between fractional flow and wettability alteration.

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