The Effect of Rock Wettability on Water Blocking During Miscible Displacement

Abstract

Summary The influence of rock wettability on water blocking of oil during miscible displacements is investigated through both laboratory coreflood experiments and numerical simulations. For non-water-wet cores, the amount of oil remaining in the cores depends on solvent throughput. A solvent-throughput-dependent water-blocking function is proposed for a numerical model to account for the slow release of oil.