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.