The Effect of Changing Mobility Ratio on Displacement Efficiency in Polymer Flooding

摘要: ABSTRACT The effect of changing mobility ratio on displacement efficiency in polymer flooding was investigated. For this purpose, experiments unsteady-state were conducted with two Berea sand cores different permeabilities. Each core flooded by displacing fluids three viscosity ratios. Relative permeability curves measured the fluid, showed similar pattern same saturation path regardless fluid. Fractional flow that higher fluid resulted more efficient displacement; is, as increased, decreased and increased. considerably low than high core. th...