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Alternatively Z-factor can be expressed through the refreence values as:
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Z(T, p) = Z^{\circ} \cdot \frac{\rho^{\circ} \, T^{\circ}}{p^{\circ}} \cdot \frac{p}{\rho(T, p) \, T} |
where
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means reference conditions, usually Standard Conditions (STP).
Z-factor can be sued to calculate Z-factor is related to fluid density
and
Formation Volume Factor (FVF) as:
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| \rho(T, p) = \rho^{\circ} \cdot \frac{Z^{\circ} \, T^{\circ}}{p^{\circ}} \cdot \frac{p}{Z(T, p) \, T} |
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| B(T, p) = \frac{\rho^{\circ}}{\rho(T, p)} = \frac{p^{\circ} }{Z^{\circ} \, T^{\circ}} \cdot \frac{Z(T, p) \, T}{p} |
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Z-factor is related to fluid compressibility
as:...
