Phase Behavior and ThermodynamicsFluid Properties
Baker-Swerdloff Gas-Water Interfacial Tension by Temperature Formula
Baker-Swerdloff Gas-Water Interfacial Tension by Temperature calculates gas-water interfacial tension for fluid properties workflows in phase behavior and thermodynamics.
How engineers use this formula
Use this formula when the listed inputs (P, 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, sigma_w equals 46.040006 dynes/cm.
Ppsia
3000
Tdeg F
180
Inputs
P
psiaPressure
T
deg FTemperature
Outputs
sigma_w
dynes/cm
Gas-Water Interfacial Tension
sigma_74
dynes/cm
Gas-Water Interfacial Tension at 74 F
sigma_280
dynes/cm
Gas-Water Interfacial Tension at 280 F
T
deg F
Temperature
Source and review
reviewedGas/Water Interfacial Tension, Baker, O., Swerdloff, W., Pengtools
Baker, O. and Swerdloff, W. 1956. Calculation of Surface Tension 6; Pengtools Gas/Water Interfacial Tension summary.
Source