The relation between surface flow rate , bottom-hole pressure
and field-average formation pressure
during the stabilised reservoir flow:
q = J \, (p_r - p_{wf}) |
corresponding to linear IPR with constant productivity index :
J = \frac{2 \pi \sigma}{ \ln \frac{r_e}{r_w} + \epsilon+ S} |
where
transmissibility above bubble point | |
| for Steady State (SS) well flow regime | |
| for Pseudo Steady State (PSS) well flow regime |
Dupuit, J., Etudes theoriques et pratiques sur le mouvement des eaux dans les canaux decouverts et a travers les terrains permeables, 2eme edition; Dunot, Paris, 1863.