A simplified version of Modified Black Oil model without volatile oil .

Consist of three pseudo-components  :

 – water substance with minerals  (assuming formation water and injection water composition is the same)

 –  dead oil pseudo-component 

 – natural gas pseudo-component

existing in three possible phases :

 – water phase, consisting of water component only

 –  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 only

The accountable cross-phase exchanges are illustrated in the table below: