A property characterising agility of the oil under pressure gradient with account of relative permeability and dynamic fluid viscosity:

(1)	$\begin{array}{l}\displaystyle M_{ro}(s) = \frac{k_{ro}}{\mu_o}\end{array}$

where

$\begin{array}{l}k_{ro}(s)\end{array}$	relative formation permeability to oil
$\begin{array}{l}\mu_o\end{array}$	dynamic viscosity of oil
$\begin{array}{l}s = \{ s_{\alpha}\}\end{array}$	reservoir saturation $\begin{array}{l}\sum_\alpha s_{\alpha} = 1\end{array}$

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