Formation permeability to a given fluid normalised to the reference value (usually to air permeability).
Units = dimensionless
(1)
k_r = \frac{k_f}{k_a}
Formation permeability to a given fluid normalised to the reference value (usually to air permeability).
Units = dimensionless
(1)
k_r = \frac{k_f}{k_a}