k = k_1 \, \phi^{m_1} + k_2 \, \phi^{m_2} |
where
| effective porosity |
Usually, the first component dictates correlation at low permeabilities while
takes over at high permeabilities.
This allows to cover a wider range of porosity variations comparing to single-component power law permeability @model.
This model was thought to be empirical for a very long time but later on it was shown that it has a clear physical meaning as percolation theory based on the fractal structure of the pore volume.
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petrophysics / Absolute permeability / Absolute permeability @model