| (1) | k = k_0 \, \exp \big[ \beta_{\phi} \, \phi \big] |
where
This is a simple empirical model which does not rely on the Flow Zone Indicator FZI concept.
It normally does not cover a wide range of porosity variations.
See also
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petrophysics / Absolute permeability / Absolute permeability @model