Phase Behavior and ThermodynamicsGas Properties
Standing Wet Gas Pseudo-Critical Properties Formula
Standing Wet Gas Pseudo-Critical Properties calculates pseudo-critical temperature for gas properties workflows in phase behavior and thermodynamics.
How engineers use this formula
Use this formula when the listed inputs (gamma_g) 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, T_pc equals 405.24 °R.
gamma_gdimensionless
0.8
Inputs
gamma_g
dimensionlessGas Specific Gravity Relative to Air for Wet Gas
Outputs
T_pc
°R
Pseudo-Critical Temperature
P_pc
psia
Pseudo-Critical Pressure
Source and review
reviewedStanding, M.B. 1981. Volumetric and Phase Behavior of Oil Field Hydrocarbon Systems; summarized in Whitson wiki Real Gas Law.
Source