Experimental Study on Enhancing Heavy Oil Recovery by Multimedia-Assisted Steam Flooding Process

Table 4

Physical properties and development effects of sand pack models with different permeabilities.

Test	PV cm^3	Φ (%)	So (%)	K (mD)		RF (%)
				Kini	Kplug	SF	SF/plug	SF/CO2/urea
#5	115.03	33.81	75.08	5713	503	50.15	52.78	61.13
	98.32	28.9	71.26	565	382	10.08	28.96	36.38

Note. PV—pore volume; Φ—porosity; So—oil saturation; K—permeability; RF—recovery factor; K_ini—initial permeability; K_plug—permeability after plugging; SF—steam flooding; SF/plug—steam flooding after plugging; SF/CO₂/urea—mixture of CO₂ and urea-assisted steam flooding.