S tudy and simulation of oil production from an oil reservoir in different production scenarios using Eclipse 300 software

After the natural production from the reservoirs, there is s till a large amount of oil in the reservoir that can no longer be produced naturally. Therefore, during that time, enhanced oil recovery (EOR) methods were used to increase reservoir oil production. In this article, four different scenarios of production from an oil reservoir are examined and simulated, which include natural production with the natural pressure of the reservoir itself, injection of nitrogen gas into the reservoir, injection of gas with a combination of 50% C1 and 50% C2, and finally CO2 gas injection. The simulation was done by ECLIPSE300 software and injection was done for 30 years. In the gas injection scenarios, injection is done from the beginning of production. Since the injection of carbon dioxide is immiscible, the amount of recovery coefficient has increased more than the other scenarios. The results indicate that with the injection of carbon dioxide, hydrocarbon gas, and nitrogen, compared to the natural production scenario, the amount of production increases by 26%, 22.54 and 17.1% respectively