Maryam Hasanzadeh - Faculty of Petroleum Gas and Petrochemical Engineering, Persian Gulf University, Bushehr, Iran
Reza Azin - Faculty of Petroleum Gas and Petrochemical Engineering, Persian Gulf University, Bushehr, Iran
Rouhollah Fatehi - Faculty of Engineering, Persian Gulf University, Bushehr, Iran
Sohrab Zendehboudi - Department of Process Engineering, Memorial University, Canada

Many of oil reservoirs in Iran are in fractured reservoirs, so it is important to investigate the production mechanisms of these reservoirs. It is believed that Gas-Assisted Gravity Drainage is one of the most effective methods for oil recovery in the vertical displacement of oil by gas in NFRs. In this paper, an attempt to investigate the effect of gas injection rate on cumulative production and recovery factor in forced gravity drainage and free fall gravity drainage. Results showed that FFGD mechanism has achieved better performance compared to FGD process and by increasing the injection rate, the cumulative production and recovery decrease significantly.

Fractured reservoirs, Gravity drainage, Recovery factor, Injection rate, Forced gravity drainage, Free fall gravity drainage