Table 1. Residual Oil Saturation and the Corresponding Water Permeability under Residual Oil Saturation of Two Cores and under Different Water Injection Volumes.

core no.	irreducible water saturation (%)	water injection volume (PV)	residual oil saturation (%)	water permeability under residual oil saturation (mD)
01	20.1	100	34.6	25.0
	20.1	500	32.0	30.6
	20.1	1000	31.4	33.4
	20.1	1500	30.8	35.6
	20.1	2000	29.8	50.1
02	21.2	100	35.2	53.8
	21.2	500	25.4	56.4
	21.2	1000	21.7	59.0
	21.2	1500	18.5	65.4
	21.2	2000	15.9	69.2