Electrochemical potential (SP log)

Input(s)

$t_{C l}$: Chloride Ion Transference Number (dimensionless)

R: Gas Constant $(8.31)(\mathrm{J} / \mathrm{mol} \mathrm{K})$

$T_{a}$: Absolute Temperature (degree K)

F: Faraday Constant (96485.336) (s A/mol)

$a_{1}$: Activities of 1st Electrolyte (dimensionless)

$a_{2}$: Activities of 2nd Electrolyte (dimensionless)

Output(s)

$E_{c}$: Electrochemical Potential (V)

Formula(s)

$$ E_{c}=2 * t_{C l} *\left(\frac{R * T_{a}}{F}\right) * \ln \left(\frac{a_{1}}{a_{2}}\right) $$

Reference(s)

Bassiouni, Z., 1994, Theory, Measurement, and Interpretation of Well Logs. SPE Textbook Series Vol. 4. Chapter 6, Page: 131 .