Incremental cumulative oil production in undersaturated reservoirs

Input(s)

$N_{p}$: Cumulative Oil Production (STB)

$\phi_{o}$: Oil PVT Function (rb/STB)

$G_{p}$: Cumulative Gas Production (MSCF)

$\phi_{g}$: Gas PVT Function (rb/MSCF)

GOR: Average Gas Oil Ratio (SCF/STB)

Output(s)

$\Delta N_{p}$: Incremental Oil Produced (STB)

Formula(s)

$$ \Delta N_{p}=\frac{1-N_{p} * \emptyset_{o}-G_{p} * \emptyset_{g}}{\left(\varnothing_{o}\right)+\left(G O R * \emptyset_{g}\right)} $$

Reference(s)

Ahmed, T., McKinney, P.D. 2005. Advanced Reservoir Engineering, Gulf Publishing of Elsevier, Chapter: 5, Page: 335 .