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

Consist of three chemical components  :

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

 –  oil liquid component 

 – light alkanes component,

persisting in three possible phases :

 – water phase (water-based liquid phase)

 –  oil phase (liquid phase with oil and dissolved gas,

 – gas phase (gas-based gaseous phase).

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