Gas expansion factor

Input(s)

Egi\mathrm{E}_{\mathrm{gi}}: Initial Gas Expansion Factor (SCF/bbl)

A: Drainage Area (acres)

h\mathrm{h}: Thickness (ft)(\mathrm{ft})

Ø: Porosity (fraction)

Swi\mathrm{S}_{\mathrm{wi}}: Initial Water Saturation (fraction)

Gp\mathrm{G}_{\mathrm{p}}: Gas Produced (SCF)(\mathrm{SCF})

Output(s)

Eg\mathrm{E}_{\mathrm{g}}: Gas Expansion Factor (SCF/bbl)(\mathrm{SCF} / \mathrm{bbl})

Formula(s)

Eg=Egi(143560 A h(1Swi))Gp\mathrm{E}_{\mathrm{g}}=\mathrm{E}_{\mathrm{gi}}-\left(\frac{1}{43560 * \mathrm{~A} * \mathrm{~h} * \emptyset *\left(1-\mathrm{S}_{\mathrm{wi}}\right)}\right) * \mathrm{G}_{\mathrm{p}}

Reference(s)

Ahmed, T., McKinney, P.D.2005. Advanced Reservoir Engineering, Gulf Publishing of Elsevier, Chapter: 3, Page: 202.


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