(1) | J = \frac{q}{|p_r - p_{wf}|} |
where
q | flowrate (the specification of which may differ, see below) |
p_r | field-average formation pressure, p_r = \frac{1}{V_e} \iint_{A_e} p(x,y,z) dV |
p_{wf} | bottom hole pressure at sandface |
See Also
Petroleum Industry / Upstream / Production / Subsurface Production / Subsurface E&P Disciplines / Production Technology / Productivity Index