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The mass of fluid per unit volume

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\rho = \frac{m}{V}

whereFluid property, characterising a concentration of fluid mass 

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bodym

...

fluid mass

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bodyV

...


The total fluid density of multiphase fluid is given by following equation:

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anchor1rho_m
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\rho = \sum_\alpha s_\alpha \, \frac{m}{V}

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\rho_\alpha

where

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body\rho_\alpha

 Density of 

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body\alpha
-phase

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bodys_\alpha

volumetric share of 

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body\alpha
-phase



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Density of popular petroleum fluids at SPE Standard Conditions (STP):

FluidTypical range (g/cc

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Popular fluid densities at Standard Conditions

FluidNormal density range (g/cm3)Gradient range (psi/ft
)
Natural Gas0.007
-
0.30
0.003-1.130
Gas Condensate0.200
-
0.40
0.090-0.174
Oil0.400
-
1.12
0.174-0.486
Water1.000
-
1.15
0.433-0.500

See also

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Natural Science / Physics / State of matter / Fluid

Petroleum Industry /  Upstream / Subsurface E&P Disciplines / Fluid Analysis

[ PhysicsDensity ]