Thanks for the answer Myk, but I am using secondary data for the research. How do I de-trend the data and work on the materials I have? and what should I look out for?

thanks

Miscibility pressure? So you basically know the compositions of your reservoir fluid and the injected gas for which you need to define the miscibility pressure (fluid diagrams) and inject below that pressure to achieve immiscible displacement. Please let me know if you need more details. Good luck.