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Z-factor is related to fluid density 

LaTeX Math Inline
body\rho
 and Formation Volume Factor (FVF) 
LaTeX Math Inline
bodyB
as:


LaTeX Math Block
anchorrho
alignmentleft
\rho(T, p) =\frac{p}{Z(T, p)} \cdot \frac{M}{R \, T}



LaTeX Math Block
anchorrho
alignmentleft
Z(T, p) = B(T, p) \cdot \frac{p}{T} \cdot \frac{M}{R \, \rho_{ref}}



Z-factor is related to fluid compressibility 

LaTeX Math Inline
bodyc
as:

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Natural Science / Physics / Thermodynamics / Equation of State

[ Compressibility ][ Fluid Compressibility ][ Gas compressibility ]

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