USBM wettability index
Input(s)
\(A_{1}\): Area Ratio of Oil Displacing Water (dimensionless)
\(A_{2}\): Area Ratio of Water Displacing Oil (dimensionless)
Output(s)
\(I_{U}\): Amott-Harvey Index (dimensionless)
Formula(s)
\[
\mathrm{I}_{\mathrm{U}}=\log \left(\frac{\mathrm{A}_{1}}{\mathrm{~A}_{2}}\right)
\]
Reference(s)
Ghedan, S. G., Canbaz, C. H., Boyd, D. A., Mani, G. M., & Haggag, M. K. (2010, January). Wettability profile of a thick carbonate reservoir by the new rise in core wettability characterization method. In Abu Dhabi International Petroleum Exhibition and Conference. Society of Petroleum Engineers. Page: 3.