Cumulative gas production - Tarner's method
Input(s)
\(N\): Initial Oil-in Place (STB)
\(R_{s}\): Gas Solubility \((\mathrm{SCF} / \mathrm{STB})\)
\(R_{s i}\): Initial Gas Solubility \((\mathrm{SCF} / \mathrm{STB})\)
\(B_{o}\): Oil Formation Volume Factor at the Assumed Reservoir Pressure (bbl/STB)
\(B_{o i}\): Oil Formation Volume Factor at Initial Reservoir Pressure (bbl/STB)
\(B_{g}\): Gas Formation Volume Factor at the Assumed Reservoir Pressure (bbl/SCF)
\(N_{p}\): Cumulative Oil Production (STB)
Output(s)
\(G_{p}\): Cumulative Gas Production (SCF)
Formula(s)
\[
G_{p}=N *\left[\left(R_{s i}-R_{s}\right)-\left(\frac{B_{o i}-B_{o}}{B_{g}}\right)\right]-N_{p} *\left[\frac{B_{o}}{B_{g}}-R_{s}\right]
\]
Reference(s)
Ahmed, T., McKinney, P.D. 2005. Advanced Reservoir Engineering, Gulf Publishing of Elsevier, Chapter: 5, Page: 340 .