Study of the Coefficient of Resistance and Residual Resistance Factor and Displacing Efficiency of Hydrophobically Associating Polymer

The oil displacing performance of a commercial hydrophobically associating polymer (HAP) at simulating Daqing reservoir conditions is investigated in laboratory through RF and RRF measurements and core flooding experiments in comparison with a commercial glycerol. HAP solution flow through artificial cores of Kg=0.9~1.3μm², RF>14 and RRF>8 are observed. On artificial cores of Kg=0.9~1.3μm², the displacing efficiency of 1760mg/L HAP solution for residual oil after water flooding is 6%~8% higher than that of glycerol solution of equal concentration.