...
| Water formation volume factor |
| Oil formation volume factor |
|
| ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Relative water mobility |
| Relative oil mobility |
| Current formation pressure | ||||||||||||||||
| Water density |
| Oil density |
| Standard gravity constant | ||||||||||||||||
| Total sandface flowrate |
| Cross-sectional flow area |
| Deviation of flow from horizontal plane | ||||||||||||||||
| capillary pressure |
It provides a good estimate when the drawdown is much higher than delta pressure from gravity and capillary effects.
...