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(1) J = \frac{q}{|p_{wf} - p_e|}

where

q

flowrate (the specification of which may differ, see below)

p_e

formation pressure

p_{wf}

bottom hole pressure at sandface


The definition of flowrate  q and formation pressure  p_e may vary depending on application of productivity index

See Also


Petroleum Industry / Upstream / Production / Subsurface Production / Well & Reservoir Management

Subsurface E&P Disciplines / Production Technology 

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