Contact angle
Input(s)
\(\sigma_{s o}\): Interfacial Tension between the solid and oil \((\mathrm{dyn} / \mathrm{cm})\)
\(\sigma_{s w}\): Interfacial Tension between the solid and water \((\mathrm{dyn} / \mathrm{cm})\)
\(\sigma_{w o}\): Interfacial Tension between the water and oil \((\mathrm{dyn} / \mathrm{cm})\)
Output(s)
\(\theta\): Contact Angle (degree)
Formula(s)
\[
\cos \theta=\frac{\sigma_{\mathrm{so}}-\sigma_{\mathrm{sw}}}{\sigma_{\mathrm{wo}}}
\]
Reference(s)
Tiab, D., & Donaldson, E. C. (2015). Petrophysics: Theory and Practice of Measuring Reservoir Rock and Fluid Transport Properties. Gulf Professional Publishing. Page: 362.