Phase Behavior and ThermodynamicsGas Properties
Corrected Sour Gas Pseudo-Reduced Properties Formula
Corrected Sour Gas Pseudo-Reduced Properties calculates corrected pseudo-reduced pressure for gas properties workflows in phase behavior and thermodynamics.
How engineers use this formula
Use this formula when the listed inputs (P, P_pc_corr, T, T_pc_corr) are known and the assumptions behind the cited gas properties relationship match the engineering case being checked.
Assumptions
- Input values are representative for the well, reservoir, fluid, or equipment case being evaluated.
- The declared units match the field-unit constants used in the formula.
- The cited formula applies to the selected petroleum engineering workflow.
Limitations
- The calculation does not replace a full engineering model or operating procedure.
- Accuracy depends on the source correlation, assumptions, input quality, and unit consistency.
Common mistakes
- Mixing unit systems without converting the inputs.
- Using default example values as field recommendations.
- Applying the formula outside the source assumptions.
Default example
Using the default inputs, P_pr_corr equals 4.767367 dimensionless.
Ppsia
3000
P_pc_corrpsia
629.2781107900792
T°R
640
T_pc_corr°R
349.2645573276727
Inputs
P
psiaGas Pressure
P_pc_corr
psiaCorrected Pseudo-Critical Pressure
T
°RGas Temperature
T_pc_corr
°RCorrected Pseudo-Critical Temperature
Outputs
P_pr_corr
dimensionless
Corrected Pseudo-Reduced Pressure
T_pr_corr
dimensionless
Corrected Pseudo-Reduced Temperature
Source and review
reviewedWichert, E. and Aziz, K. 1971. Compressibility factor of sour natural gases; summarized in Whitson wiki Additional QC.
Source