A property characterising agility of the fluid \alpha-phase under pressure gradient with account of reservoir permeability and dynamic fluid viscosity:
| (1) | \left<\frac{k_\alpha}{\mu_\alpha} \right> |
where
k_\alpha | formation permeability to fluid \alpha-phase |
|---|---|
\mu_\alpha | dynamic viscosity of fluid \alpha-phase |
In most practical case of a 3-phase fluid model this will be:
\displaystyle \left<\frac{k_o}{\mu_o} \right> | mobility to oil |
\displaystyle \left<\frac{k_g}{\mu_g} \right> | mobility to gas |
\displaystyle \left<\frac{k_w}{\mu_w} \right> | mobility to water |