On the Imbibition Model for Oil-Water Replacement of Tight Sandstone Oil Reservoirs

Figure 6

(a) When , the relationship between oil-water displacement rate and dimensionless time; (b) when , the relationship between oil-water displacement rate and dimensionless time; (c) when ,the the relationship between oil-water displacement rate and dimensionless time; (d) when , the relationship between oil-water displacement rate and dimensionless time; (e) when , the relationship between oil-water displacement rate and dimensionless time; (f) when , 50000 mg/L, and 100000 mg/L, the relationship between oil-water displacement rate and dimensionless time.

(a)

(b)

(c)

(d)

(e)

(f)