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The table below is summarizing the major differences between SS and PSS regimes.
| Steady state regime (SS) | Pseudo-steady state (PSS) | ||||||
|---|---|---|---|---|---|---|---|
| Boundary | Full pressure support | No pressure support | |||||
| Productivity index |
| constant | constant | ||||
| Flow rate |
| constant | constant | ||||
Drawdown |
| constant | constant | ||||
| Botom-hole pressure |
| constant | varying | ||||
| Formation pressure |
| constant | varying |
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