Production EngineeringWell Performance
Gas Conditioning Relative Humidity Formula
Gas Conditioning Relative Humidity calculates relative humidity for well performance workflows in production engineering.
How engineers use this formula
Use this formula when the listed inputs (P_water, P_sat) are known and the assumptions behind the cited well performance 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, RH equals 0.6 fraction.
P_waterpsi
3
P_satpsi
5
Inputs
P_water
psiPartial Pressure of Water Vapor
P_sat
psiSaturation Pressure of Water Vapor
Outputs
RH
fraction
Relative Humidity
P_water
psi
Partial Pressure of Water Vapor
P_sat
psi
Saturation Pressure of Water Vapor
Source and review
reviewedGas Conditioning and Processing, Campbell, J. M. (1992)
John M. Campbell. 1992. Gas Conditioning and Processing, Campbell Petroleum Series, Vol. 2, Page 157.
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