J = \frac{q}{|p_e - p_{wf}|} |
where
flowrate (the specification of which may differ, see below) | |
formation pressure | |
bottom hole pressure at sandface |
The definition of flowrate and formation pressure may vary depending on application of productivity index.
Petroleum Industry / Upstream / Production / Subsurface Production / Well & Reservoir Management
Subsurface E&P Disciplines / Production Technology
[ Definition specifics on formation pressure and productivity index ]