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Alternatively Z-factor can be expressed through the refreence values the fluid properties at reference conditions as:
| LaTeX Math Block |
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Z(T, p) = Z^{\circ} \cdot \frac{\rho^{\circ} \, T^{\circ}}{p^{\circ}} \cdot \frac{p}{\rho(T, p) \, T} |
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The Z-factor value is trending towards unit value (
)
for incompressible fluids and linear pressure dependence (| LaTeX Math Inline |
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| body | Z \rightarrow a \cdot p |
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)
for strongly compressible Fluidsfluids.
Modelling Z-factor as a function of fluidpressure and temperature is based on Equation of State.
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