Effect of Microscopic Pore Throat Structure on Displacement Characteristics of Lacustrine Low Permeability Sandstone: A Case Study of Chang 6 Reservoir in Wuqi Oilfield, Ordos Basin

Figure 8

Correlation between pore structure parameters and displacement efficiency.

(a) Areal porosity rate of intergranular pores vs. displacement efficiency

(b) Areal porosity rate of dissolution pores vs. displacement efficiency

(c) Main pore throat radius vs. displacement efficiency

(d) Medium radius vs. displacement efficiency

(e) Maximum mercury saturation vs. displacement efficiency

(f) Pore-throat ratio vs. displacement efficiency