# Oil recovery as a function of the fraction of oil displaced from heated zone

## Input(s)

F: Air Injected per Unit Oil Produced (Mscf/bbl)

\(\varnothing\): Porosity (fraction)

\(a_{r}\): Air Required to Burn a Unit Volume of Reservoir \(\left(\mathrm{Mscf} / \mathrm{ft}^{3}\right)\)

\(S_{o i}\): Initial Water Saturation (fraction)

\(S_{o f}\): Oil Saturation Burned (fraction)

\(E_{O 2}\): Oxygen Consumption Efficiency (fraction)

## Output(s)

\(E_{c b}\): Oil Recovery (fraction)

## Formula(s)

\[
\mathrm{E}_{\mathrm{cb}}=5.615 \frac{\mathrm{a}_{\mathrm{r}}}{\mathrm{F} * \emptyset * \mathrm{E}_{\mathrm{O} 2} *\left(\mathrm{~S}_{\mathrm{oi}}-\mathrm{S}_{\mathrm{of}}\right)}
\]

## Reference(s)

Prats, M. 1986. Thermal Recovery. Society of Petroleum Engineers, New York, Chapter: 8, Page: 104.