...
For the radial-symmetric permeability change around a well it can be represented by Hawkins equation Hawkins equation:
LaTeX Math Block | ||||
---|---|---|---|---|
| ||||
S_M = \left ( \frac{k}{k_s} - 1 \right ) \ \ln \left ( \frac{r_s}{r_w} \right ) |
...
The most popular practical range of skin-factor variation is
LaTeX Math Inline | ||
---|---|---|
|
...