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| LaTeX Math Block | ||||
|---|---|---|---|---|
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J = \frac{q}{|p_e - p_{wf}|} |
where
| flowrate (the specification of which may differ, see below) | ||||
| formation pressure | ||||
| bottom hole pressure at sandface |
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| Productivity Index of producer | Injectivity Index of injector | ||||||||||||||||
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| production rate |
| injection rate | ||||||||||||||
The PI concept also applies to aquifer inflow withexpansion:
| LaTeX Math Block | ||||
|---|---|---|---|---|
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J^{\downarrow} = \frac{q^{\downarrow}}{p(t) - p_{AQ}(t)} |
where
| volumetric water inflow rate from aquifer into hydrocarbon reservoir | ||||
| formation pressure in hydrocarbon reservoir | ||||
| formation pressure in aquifer |
See Also
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Petroleum Industry / Upstream / Production / Subsurface Production / Well & Reservoir Management
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