Permeability Classification

Throat radius

(Normal distribution)

Absolute permeability of the matrix (mD)

Oil displacement efficiency of the matrix

Type I (50 - 10 mD)

0.1 - 20 μm, σ = 6, μ = 10 μm

18.7

0.38

Type II

(10 - 1 mD)

0.1 - 20 μm, σ = 6, μ = 8 μm

2.23

0.64