Corey function

Corey functions are a type of relative permeability model used in multiphase flow in porous media. The Corey correlation is a power law in saturation and assumes the wetting and non-wetting phase relative permeabilities to be independent of the saturations of the other phases. The Corey correlations of the relative permeability for oil and water are then written using the same normalization as for Corey. Only certain parameters have direct physical meaning, while others are empirical.

The following general equations are often used to describe relative permeabilities:

Oil

Water

Gas

Saturation curves can be generated using Petrofaq Tools: Oil - Water curves, Oil - Gas curves, Gas - Water curves.

Read more about Relative permeability models: https://petrowiki.spe.org/Relative_permeability_models