Static self potential
Input(s)
\(t_{C l}\): Chlorine Anion Transference Number (dimensionless)
\(\mathrm{R}\): Gas Constant \((\mathrm{J} /\) degree \(\mathrm{C})\)
\(T_{a}\): Absolute Temperature (degree K)
F: Faraday Constant (96485.336) (s A/mol)
\(a_{w}\): Activity of \(\mathrm{NaCl}\) (dimensionless)
\(a_{m f}\): Activity of Dilute Solution (dimensionless)
Output(s)
\(\mathrm{K}\): Equilibrium Constant \((\mathrm{mV})\)
\(E_{s s p}\): Static Self Potential (V)
Formula(s)
\[
\begin{gathered}
K=4.606 * t_{C l} *\left(R * \frac{T_{a}}{F}\right) \\
E_{s s p}=-K * \log \left(\frac{a_{w}}{a_{m f}}\right)
\end{gathered}
\]
Reference(s)
Bassiouni, Z., 1994, Theory, Measurement, and Interpretation of Well Logs. SPE Textbook Series Vol. 4. Chapter 6, Page: 131-132.