RELATIONSHIP BETWEEN THE POROSITY AND PERMEABILITY | KOZENY

One of the most common ratios used to correlate the permeability and porosity is one that was developed by Kozeny:

Where:

k = permeability, cm2 (= 1013 x 108 Darcie)
Φ = effective porosity
Sv = total granular surface / unit volume of the reservoir, cm2/cm3

The following figure shows the ratio of grain size (Fig. 1) and classification (Fig. 2): porosity and permeability.

(Fig.1) Porosity, permeability and grain size. The porosity is not affected by grain size but the permeability increases with grain size.

Grafico de relacion entre la porosidad y la permeabilidad

(Fig. 2) and (Fig. 3) The porosity and permeability are affected by the classification, both increase with the increase of it.

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