Gas Volume Correction Calculator
Calculate correction factors for gas measurement at custody transfer points. Used at every meter run.
FLOWING CONDITIONS
BASE (CONTRACT) CONDITIONS
GAS COMPOSITION
CORRECTION FACTORS
Fpv (Supercompressibility)
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Ftf (Temperature)
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Fpf (Pressure)
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Z-Factor
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Combined Factor
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Corrected Volume (Mcf)
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Volume Difference (%)
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GAS PROPERTIES
Pseudocritical Pressure
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Pseudocritical Temp
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Pseudoreduced Pressure
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Pseudoreduced Temp
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How this was calculated
Pressure Factor: Fpf = Pf / Pb where Pf = flowing pressure (psia) and Pb = base pressure (psia)
Temperature Factor: Ftf = Tb / Tf where Tb = base temp (°R) and Tf = flowing temp (°R)
Supercompressibility: Fpv = 1 / sqrt(Zf) where Zf is the Z-factor at flowing conditions
Z-Factor: Dranchuk-Abou-Kassem (DAK) correlation using pseudoreduced properties
Pseudocritical Properties: Sutton correlation with Wichert-Aziz correction for H2S and CO2
Corrected Volume: Vsc = Vm x Fpf x Ftf x Fpv
Need help with gas measurement optimization or custody transfer audits?
Book a free strategy call →Disclaimer: This calculator uses simplified AGA correlations for screening purposes. For custody transfer billing, use calibrated meter run software certified to AGA standards. Groundwork Analytics assumes no liability for decisions made based on these results.