Gas Formation Volume Factor

In this spreadsheet, just type in the required information and press the compute button. Scroll down for more info.

Res. Temp
Deg F
Res. Pressure
psia
Res. Z
Factor
Zsc
Std. Condition
Bg
(RB/scf)
Gas Formation Volume Factor (FVF)
Bg = 0.005035*(Trc+460)*Zrc/(Prc*Zsc)
Where
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 Z Factor

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