Baker-Swerdloff Live-Oil Gas-Oil Interfacial Tension Formula
Baker-Swerdloff Live-Oil Gas-Oil Interfacial Tension calculates live-oil gas-oil interfacial tension for fluid properties workflows in phase behavior and thermodynamics.
How engineers use this formula
Use this formula when the listed inputs (sigma_od, P) 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_o equals 10.45554 dynes/cm.
29.439
1500
Inputs
sigma_od
dynes/cmDead-Oil Gas-Oil Interfacial Tension
P
psiaPressure
Outputs
sigma_o
Live-Oil Gas-Oil Interfacial Tension
C_bs_go
Baker-Swerdloff Gas-Oil Pressure Correction Factor
sigma_od
Dead-Oil Gas-Oil Interfacial Tension
P
Pressure
Source and review
reviewedGas/Oil Interfacial Tension, Baker, O., Swerdloff, W., Pengtools
Baker, O. and Swerdloff, W. 1956. Calculation of Surface Tension 6; Pengtools Gas/Oil Interfacial Tension summary.
Source