Pore-scale simulation of viscous instability for non-Newtonian two-phase flow in porous media

The impact of micro-heterogeneity on non-Newtonian two-phase flow is the focus present study. direct numerical simulation fluids (modelled using shear stress-dependent Meter model) displacing oil in 3D Mt. Simon sandstone and 2D heterogeneous porous media were considered over a range wettabilities (strong imbibition to strong drainage), capillary numbers viscosity ratios. This study suggests that heterogeneity medium can potentially lead an unstable fluid front (even after use polymer). Therefore along with number ratio, governing factor for controlling viscous fingering, it crucial account microscale design polymer solution injection.