Gas/Water Interfacial Tension

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Gas/Water Interfacial Tension

Gas/Water Interfacial Tension correlation was published by Baker and Swerdloff in 1956.

File:Gas/Water Interfacial Tension.png
Gas/Water Interfacial Tension correlation in the PVT software at pengtools.com

Math and Physics

 \sigma_{74} =75 - 1.108P^{0.349}
 \sigma_{280} =53-0.1048P^{0.637}
 At\ T<74F,\  \sigma_w=\sigma_{74}
 At\ 74F<T<280F,\  \sigma_w=\frac{\sigma_{74} + (T - 74) * (\sigma_{280} - \sigma_{74})}{ (280 - 74)}
At\ T>280F,\ \sigma_w=\sigma_{280}

Nomenclature

 P = pressure, psia
 \sigma_w = gas/water interfacial tension, dynes/cm
 T = temperature, °F

See also

Gas/Oil Interfacial Tension
Gas/Water Interfacial Tension
Water bubble point pressure
Water compressibility
Water density
Water formation volume factor
Water salinity from density equation
Water solids concentration
Water viscosity

References

Baker, O. and Swerdloff, W. 1955. Calculation of Surface Tension 3—Calculating parachor Values. Oil Gas J. (5 December 1955): 141.
Baker, O. and Swerdloff, W. 1956. Calculation of Surface Tension 6—Finding Surface Tension of Hydrocarbon Liquids. Oil Gas J. (2 January 1956): 125.