Gas/Oil Interfacial Tension

Gas/Oil Interfacial Tension

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Gas/Oil Interfacial Tension correlation in the PVT software at pengtools.com

The density of formation water (brine) at standard conditions (14.7psia & 60°F):

$\rho_{wSC} = C_{mg/l}/25000 + 62.428$

The density of formation water (brine) at reservoir conditions:

$\rho_{wR}=\rho_{wSC}/B_w$

Nomenclature

$B_w$ = water formation volume factor, res bbl/STB

$C_{mg/l}$ = water salinity or solids concentration, mg/l

$\rho_{wSC}$ = water density at standard conditions, lb_m/ft³

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.