2-phase fluid model based on three pseudo-components :
| dead oil pseudo-component | |
| dry gas pseudo-component |
existing in two possible phases :
| oil phase, consisting of dead oil pseudo-component and dissolved natural gas pseudo-component (called solution gas) | |
| gas phase, consisting of natural gas pseudo-component and vaporized dead oil pseudo-component (called volatile oil) |
The volumetric phase-balance equations is:
s_o+s_g =1 |
where
share of total fluid volume | |
share of total fluid volume |
The accountable cross-phase exchanges are illustrated in the table below:
| x | x | |
| x | x |
It's a typical case for reservoirs with poor or no aquifer.
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Fluid (PVT) Analysis / Fluid (PVT) modelling