Dimensionless value characterising permeability change in a thin layer around the well cased by stimulations or deteriorations, represented by Hawkins' equation:
(1) | S = \left ( \frac{k}{k_s} - 1 \right ) \ \ln \left ( \frac{r_s}{r_w} \right ) |
Dimensionless value characterising permeability change in a thin layer around the well cased by stimulations or deteriorations, represented by Hawkins' equation:
(1) | S = \left ( \frac{k}{k_s} - 1 \right ) \ \ln \left ( \frac{r_s}{r_w} \right ) |