Multi-phase fluid model based on three pseudo-components :
| water pseudo-component, which may include minerals (assuming formation water and injection water composition is the same) | |
| dead oil pseudo-component | |
| dry gas pseudo-component |
existing in three possible phases :
| water phase, consisting of water component, dead oil pseudo-component and dry gas pseudo-component | |
| oil phase, consisting of dead oil pseudo-component and dissolved dry gas pseudo-component (called Solution Gas) and water | |
| gas phase, consisting of dry gas pseudo-component and vaporized dead oil pseudo-component (called Volatile Oil) |
The volumetric phase-balance equations is:
s_w + s_o+s_g =1 |
where
share of total fluid volume | |
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 | x | x | |
| x | x | x |
Injection water and production water are assumed to have the same dynamic fluid properties and not being discerned.
It's a typical case for saturated reservoir.
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