For the fractured vertical well the geometrical skin-factor S_G is related to Fracture half-length X_f as:
| (1) | S_G= - \ln \left(\frac{X_f}{2\, r_w} \right) |
See Also
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Well Testing / Pressure Testing / Skin-factor (geometrical)