Trapped gas volume in water-invaded zones

Input(s)

$\mathrm{W}_{\mathrm{e}}$: Cumulative Water Influx (bbl)

$\mathrm{W}_{\mathrm{p}}$: Cumulative Water Produced (bbl)

$\mathrm{B}_{\mathrm{w}}$: Water Formation Volume Factor (bbl/STB)

$\mathrm{s}_{\mathrm{wi}}$: Initial Water Saturation (fraction)

$\mathrm{s}_{\text {grw }}$: Relative Gas Saturation (fraction)

Output(s)

TG: Trapped Gas Volume (MSCF)

Formula(s)

Reference(s)

Ahmed, T., McKinney, P.D.2005. Advanced Reservoir Engineering, Gulf Publishing of Elsevier, Chapter: 3, Page: 208 .