Phase Behavior and ThermodynamicsFluid Properties
McCain Brine Gas-Solubility Salinity Correction Formula
McCain Brine Gas-Solubility Salinity Correction calculates brine gas-solubility salinity correction factor for fluid properties workflows in phase behavior and thermodynamics.
How engineers use this formula
Use this formula when the listed inputs (S, T) are known and the assumptions behind the cited fluid 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, F_s equals 0.803046 dimensionless.
Swt%
5
Tdeg F
180
Inputs
S
wt%Salinity
T
deg FTemperature
Outputs
F_s
dimensionless
Brine Gas-Solubility Salinity Correction Factor
S
wt%
Salinity
Source and review
reviewedFormation Water PVT Properties, McCain, W.D. Jr., Petroleum Office, AAPG Wiki
McCain, W.D. Jr. 1991. Reservoir-Fluid Property Correlations-State of the Art; Petroleum Office Formation Water PVT Properties.
Source