Gas Formation Volume Factor
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Gas Formation Volume Factor (FVF)
Bg = 0.005035*(Trc+460)*Zrc/(Prc*Zsc)
Bg = gas FVF, RB/scf,
Trc = Reservoir temperature, deg F,
Prc = Reservoir pressure, psia
Zrc and Zsc = Gas Z factor at reservoir condition and standard condition,
respectively. For most cases, Zsc = 1. For more info, refer to
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