# Total water production from in-situ combustion - Nelson and McNeil

## Input(s)

\(V_{r}\): Volume of Reservoir burnt \(\left(\mathrm{ft}^{3}\right)\)

\(\phi\): Porosity (fraction)

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

\(S_{f}\): Water Saturation after burning Reservoir (fraction)

## Output(s)

\(W_{p}\): Cumulative Water production (bbl)

## Formula(s)

\[
\mathrm{W}_{\mathrm{p}}=7758 * \mathrm{~V}_{\mathrm{r}} * \varnothing *\left(\mathrm{~S}_{\mathrm{i}}-\mathrm{S}_{\mathrm{f}}\right)
\]

## Reference(s)

Enhanced Oil Recovery, Green & Willhite, Page: 395.