A property characterising agility of the oil under pressure gradient with account of reservoir permeability and dynamic fluid viscosity:
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\left<\frac{k_o}{\mu_o} \right> = k_{air}\left<\frac{k_{ro}}{\mu_o} \right> |
where
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| absolute permeability to air | ||||
| relative formation permeability to oil | ||||
| relative oil mobility |