The mass of fluid per unit volume

\rho = \frac{m}{V}

where

fluid mass

fluid volume


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

\rho = \sum_\alpha s_\alpha \, \rho_\alpha

where

 Density of -phase

volumetric share of -phase





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

FluidTypical range (g/cc)
Natural Gas0.007 – 0.30
Gas Condensate0.200 – 0.40
Oil0.400 – 1.12
Water1.000 – 1.15

See also


Natural Science / Physics / State of matter / Fluid

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

Density ]