Abstract
Nowadays, the non-hydrocarbon gases are the main sources for gas injection projects in different countries. The main advantages of the flue gas injection are low cost, readily available sources (which consists mainly of N2 and CO2) and low compressibility in comparison with other gases like CO2 or CH4 (for a given volume at the same conditions). In addition, it occupies more space in the reservoir and it is an appropriate way for CO2 sequestering and consequently reducing greenhouse gases. In the aforementioned method, N2 and/or CO2 is injected into the oil reservoir for miscible and/or immiscible displacement of remaining oil.
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