A proxy model of Productivity Index for stabilised reservoir flow in homogeneous reservoir:.
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J = \frac{q}{p_{\rm frm} - p_{wf}} = \frac{2 \pi \sigma}{ \ln \frac{r_e}{r_w} + \epsilon + S} |
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| depending on application may mean a total sandface flowrate (
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| depending on application may mean a drain-boundary formation pressure (
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| wellbore radius | ||||||||||||
| distance to a drainarea boundary | ||||||||||||
| total skin | ||||||||||||
| a model parameter depending on Productivity Index definition and boundary type (
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The Dupuit PI @model is actually exact for homogeneous reservoir.
Table 1. Variations to Dupuit PI @model depending on the reservoir flow regime and the definition/application of Productivity Index.
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