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{\rm Y_{wm}} = \frac{1}{1 + \frac{M_{ro}}{M_{rw}} \cdot \frac{B_w}{B_o} } |
where
| Relative oil mobility |
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| Oil |
| LaTeX Math Inline | ||
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| formation volume factor |
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| Relative water mobility |
| Water formation volume factor |
| Current formation pressure |
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It provides a good estimate when the drawdown is much higher than delta pressure from gravity and capillary effects.
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