Corrected Interfacial Tension - de Nouy Ring Method Formula
Corrected Interfacial Tension - de Nouy Ring Method calculates corrected interfacial tension for rock properties workflows in petrophysics.
How engineers use this formula
Use this formula when the listed inputs (S_app, C) are known and the assumptions behind the cited rock 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 equals 33 dyn/cm.
30
1.1
Inputs
S_app
dyn/cmApparent Interfacial Tension
C
dimensionlessde Nouy Correction Factor
Outputs
sigma
Corrected Interfacial Tension
S_app
Apparent Interfacial Tension
C
de Nouy Correction Factor
Source and review
reviewedPetroleum and Natural Gas Laboratory Course Notes, I-Fluid Properties, Mihcakan, I. M., Alkan, K. H., Ugur, Z. (2001)
Mihcakan, I. M., Alkan, K. H., and Ugur, Z. 2001. Petroleum and Natural Gas Laboratory Course Notes, I-Fluid Properties, ITU Petroleum and Natural Gas Engineering, Page 4-4.
Source