Ratio of Water Replenishment ( WR ) to the remaining oil reserves ( $\begin{array}{l}OR\end{array}$ ):

$\begin{array}{l}\displaystyle {\rm WOBR} = \frac{\rm WR}{OR} = \frac{ \Omega_W^{\downarrow} \cdot Q_W^{\downarrow} - \Omega_W^{\uparrow} \cdot Q_W^{\uparrow} } { EUOR - Q_O^{\uparrow} }\end{array}$

where

$\begin{array}{l}EUOR\end{array}$	Estimated Ultimate Oil Recovery	$\begin{array}{l}Q_O^{\uparrow}\end{array}$	Cumulative oil production
$\begin{array}{l}Q_W^{\uparrow}\end{array}$	Cumulative water production	$\begin{array}{l}\Omega_W^{\uparrow}\end{array}$	Good water production share
$\begin{array}{l}Q_W^{\downarrow}\end{array}$	Cumulative water injection	$\begin{array}{l}\Omega_W^{\downarrow}\end{array}$	Good water injection share

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See Also

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Water Oil Balance Ratio = WOBR

See Also