Displacement results of emulsion polymer (GF-1) and conventional polymer in heterogeneous cores.

Injection solution	Oil recovery by the water flood, %			Overall oil recovery, %			Incremental oil recovery by the polymer flood
	HPCa	LPCb	Total	HPC	LPC	Total	HPC	LPC	Total
Emulsion polymer	45.26	12.26	30.47	67.11	49.76	58.74	21.85	37.50	28.27
Conventional polymer	46.45	13.82	31.85	67.83	44.47	57.38	21.38	30.65	25.53

^aHPC = high permeability core.

^bLPC = low permeability core.