# Equivalent water saturation in burned zone in-situ combustion by Nelson

## Input(s)

\(\mathrm{x}\): Equivalent \(\mathrm{H} / \mathrm{C}\) Molar Ratio (ratio)

\(\emptyset\): Volume of Air Required to Burn through a Unit Volume of Reservoir (Mscf/ \(\mathrm{ft}^{3}\) )

\(a_{r}\): Volume Required to Burn through Reservoir \(\left(\mathrm{ft}^{3}\right)\)

m: Ratio of Carbon Monoxide to Carbon Emissions (fraction)

## Output(s)

\(S_{w F}\): Water Saturation Resulting from Combustion (fraction)

## Formula(s)

\[
\mathrm{S}_{\mathrm{wF}}=\frac{0.319 * \mathrm{x} * \mathrm{a}_{\mathrm{r}}}{\emptyset *(4-2 * \mathrm{~m}+\mathrm{x})}
\]

## Reference(s)

Prats, M. 1986. Thermal Recovery. Society of Petroleum Engineers, New York, Chapter: 8, Page: 92.