Facies and saturation functions

Six required facieN tables define permeability, porosity, dispersion, residual saturations, capillary entry pressure, Corey exponents, capillary exponent, threshold, and table resolution.

Required keys

For each facies N: permxN, permzN, poroN, dispercN, swiN, sniN, penN, nkrwN, nkrnN, npeN, threN, and npntN. npntN is an integer of at least 2. Porosity and residual saturations lie in [0, 1], and swiN + sniN <= 1.

krw, krn, and cap

These required strings are valid Python expressions used to generate wetting relative permeability, non-wetting relative permeability, and capillary-pressure tables. threN prevents evaluation too close to a singular endpoint, and npntN controls the number of table points.