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{\rm Y_{wm}} = \frac{1}{1 + \frac{M_{ro}}{M_{rw}} \cdot \frac{B_w}{B_o} } |
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where
| relative oil mobility | ||||||||
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| relative water mobility | ||||||||
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| Oil formation volume factor (Bo) | ||||||||
| Water formation volume factor (Bw) |
It provides a good estimate when the drawdown is much higher than delta pressure from gravity and capillary effects.
The model
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