Study on Micropore Throat Fluid Seepage Characteristics and Oil Displacement Efficiency in Tight Reservoir

Figure 3

The image of real microcosmic water flooding.

(a) Vacuuming

(b) Oil flooding

(c) Saturated oil

(d) Water flooding (1 PV)

(e) Water flooding (2 PV)

(f) Water flooding (3 PV) (PV stands for multiple of pore volume)