Fluid volume consisting of two or more contacting phases
In most practical cases in Petroleum Industry it will be a 3-phase fluid (water, oil and gas).
The total fluid density of multiphase fluid is given by following equation:
(1) | \rho = \sum_\alpha s_\alpha \, \rho_\alpha |
where
The total fluid compressibility of multiphase fluid is given by following equation:
(3) | c = \sum_\alpha s_\alpha \, c_\alpha |
where
\rho_\alpha | fluid compressibility of \alpha-phase | s_\alpha | volumetric share of \alpha-phase |
See also
Natural Science / Physics / State of matter / Fluid
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Fluid Analysis