j = \frac{J}{h_e} =\frac{q}{h_e \cdot |p_e - p_{wf}|} |
where
| productivity index | |
| flowrate (the specification of which may differ, see below) | |
| formation pressure | |
| bottom hole pressure at sandface | |
| effective formation thickness |
Petroleum Industry / Upstream / Production / Subsurface Production / Subsurface E&P Disciplines / Production Technology / Productivity Index