The most accurate prediction of Productivity Index is based on numerical reservoir flow simulations but there are numerous proxy models covering popular categories of reservoir flow regimes, dynamic reservoir properties and well-reservoir contacts.
| (1) | J = \frac{2 \pi \sigma}{ \ln \frac{r_e}{r_w} + \epsilon+ S} |
where
\sigma | |
\epsilon = 0.5 | for Steady State (SS) well flow regime |
\epsilon = 0.75 | for Pseudo Steady State (PSS) well flow regime |
See Also
Petroleum Industry / Upstream / Production / Subsurface Production / Subsurface E&P Disciplines / Production Technology / Productivity Index
[ Definition specifics on formation pressure and productivity index ]
[ Sandface Productivity Index ] [ Surface Productivity Index ] [ Specific Productivity Index ] [ Injectivity Index ] [ Drainarea Productivity Index (Jr) ]