Carmen-Kozeny is the only attempt I know to relate particle size to permeability, backed by numerous experimental data. If you like glass beads then their formula is for you. There is also numerous empirical data looking at (log normal) distributions of pore sizes, which effectively relate to permeability.
As for being "enomomically viable", oh yes, nowadays one can spend up to a billion dollars building an offshore production platform with full scale separation and pumping facilties based on two or even one borehole 6 inches wide and three miles deep drilled in an area tens of kilometres square. Log normal seems to work, so no one's complaining!
Syed
On 11 Aug 2006, at 20:31, Michael Grant wrote:
, and that has been known to occur, someone please point me in the right direction.
I have merely posited that the assertion of lognormality has a strong historical/cultural influence--at least for K. I interpreted Gregoire's question question as why would one chose lognormality? and not when should one choose lognormality? For some individuals the choice of lognormality is more a deliberate selection of a model than applying a transformation to facilitate calculations.
