PO.PVT.IFT.GasOil.ByBakerSwerdloff
Description
Calculates interfacial (surface) tension for live oil using Baker and Swerdloff (1955) correlation, [dynes/cm].
Syntax
=PO.PVT.IFT.GasOil.ByBakerSwerdloff(API, T_degF, P)Parameters
| Parameter | Description |
|---|---|
| API | Oil gravity, [API]. |
| T_degF | Temperature, [degF]. |
| P | Pressure, [psi]. |
SI Unit Version
Lambda Name
PO.PVT.IFT.GasOil.ByBakerSwerdloff.SIFormula
=LAMBDA(API, T_degC, P, LET(
T_degF, PO.UnitConverter(T_degC, "degC", "degF"),
P_psi, PO.UnitConverter(P, "kPa", "psi"),
result_dynecm, PO.PVT.IFT.GasOil.ByBakerSwerdloff(API, T_degF, P_psi),
PO.UnitConverter(result_dynecm, "dyne/cm", "mN/m")))SI Parameters
| Parameter | Unit | Description |
|---|---|---|
API |
- | Oil API gravity |
T_degC |
degC | Temperature |
P |
kPa | Pressure |
How to save as a reusable Excel function
LAMBDA is a built-in Excel feature (Microsoft 365) that lets you create custom functions without VBA. The formula above works as-is when pasted into a cell.
To save a LAMBDA as a reusable named function:
- Go to Formulas → Name Manager → New
- Enter a name, e.g.
PO.PVT.IFT.GasOil.ByBakerSwerdloff.SI - In Refers to, paste the LAMBDA formula without the trailing invocation
(...) - Click OK
Now use =PO.PVT.IFT.GasOil.ByBakerSwerdloff.SI(...) anywhere in your workbook.