Micropore Throat Structure and Movable Fluid Characteristics of Chang 6₃ Tight Sandstone in Baibao Area of Ordos Basin

Table 2

Experimental results of relative permeability.

No.	Porosity (%)	Permeability (×10^-3 μm^2)	Irreducible water saturation (%)	Isotonic point water saturation (%)	Oil-water relative permeability (mD)	Irreducible oil saturation (%)	Two-phase infiltration width	Oil displacement efficiency (%)
9	4.2	0.677	22.3	49.6	0.152	43.4	34.3	44.1
29	3.2	0.065	31.2	49.6	0.158	44.6	24.2	35.2
30	2	0.018	22.4	49.6	0.151	43.4	34.2	44.1
33	10.4	0.31	25.8	59.5	0.078	37	37.2	44.1
34	1.6	0.032	38.0	51.2	0.114	40.9	21.1	34.1
35	4.1	0.139	38.0	50.6	0.124	40.8	21.1	34.1
47	3.4	0.242	35.6	46.7	0.068	37.4	27.0	48.7
49	11.6	0.262	25.8	39.9	0.143	37.1	37.1	37.2