Experimental Research on the Effective Utilization of Remaining Oil Based on the Microfluidic Flat Model

Table 1

Displacement effect statistics of different well types.

Well type	Displacement method	Original porosity (%)	Saturated oil-water phase face ratio (%)	Saturated oil-oil phase face ratio (%)	Original oil saturation (%)	Oil phase face ratio after displacement (%)	Remaining oil saturation (%)	Oil displacement efficiency (%)
Horizontal fracture conventional well	Water	30.72	4.36	26.36	85.81	22.18	72.20	15.86
	Nitrogen	27.99	3.21	24.78	88.53	11.28	40.30	54.48
	Foam	28.46	3.32	25.14	88.33	12.59	44.24	49.92
	Throughput	27.56	4.80	22.76	82.58	21.58	78.30	5.18
Horizontal fracture horizontal well	Water	31.55	7.98	23.57	74.71	19.30	61.17	18.12
	Nitrogen	32.02	7.34	24.68	77.08	8.16	25.48	66.94
	Foam	30.92	7.97	22.95	74.22	10.90	35.25	52.51