Percentage of currently recovered hydrocarbon reserves $\begin{array}{l}Q_{HC}\end{array}$ from the Surface Tank Hydrocarbon Initial In Place (STHCIIP):

(1)	$\begin{array}{l}\displaystyle {\rm RF}(t) = \frac{{Q_{HC}}(t)}{{\rm V_{\rm STHCIIP}}} \cdot 100 \%\end{array}$

It always ranges $\begin{array}{l}0 \leq {\rm RF}(t) \leq {\rm EURF} \leq 100 \%\end{array}$ and is related to Depletion Factor (DF) as:

(2)	$\begin{array}{l}\displaystyle {\rm RF} (t) = {\rm EURF} \cdot {\rm DF}(t)\end{array}$

The Recovery Factor concept splits naturally into two categories:

(3)	$\begin{array}{l}\displaystyle {\rm RFO} = \frac{Q^{\uparrow}_O}{V_{\rm STOIIP}}\end{array}$

(4)	$\begin{array}{l}\displaystyle {\rm RFG} = \frac{Q^{\uparrow}_G}{V_{\rm STGIIP}}\end{array}$

$\begin{array}{l}Q^{\uparrow}_O\end{array}$

$\begin{array}{l}Q^{\uparrow}_G\end{array}$

$\begin{array}{l}V_{\rm STOIIP}\end{array}$

$\begin{array}{l}V_{\rm STGIIP}\end{array}$

Page tree

See Also