Comparative Study of Using Sea-Water for Enhanced Oil Recovery in Carbonate and Sandstone Reservoirs: Effects of Temperature and Aging Time on Oil Recovery

Madi Abdullah Naser (Petroleum Engineering of Faculty of Mining and Energy, Sebha University, Libya)
Mohamed Erhayem (Chemistry Department, Faculty of Science, Sebha University, Libya)
Ali Hegaig (Mechanical Engineering, Faculty of Engineering, Misurata University, Libya)
Hesham Jaber Abdullah (Petroleum Engineering of Faculty of Mining and Energy, Sebha University, Libya)
Muammer Younis Amer (Petroleum Engineering of Faculty of Mining and Energy, Sebha University, Libya)
Abdalsalam Ali Mohamed (Petroleum Engineering of Faculty of Mining and Energy, Sebha University, Libya)

JOURNAL OF EARTH ENERGY ENGINEERING
Vol. 7 No. 2 (2018): OCTOBER

Oil recovery process is an essential element in the oil industry, in this study, a laboratory study to investigate the effect of temperature and aging time on oil recovery and understand some of the mechanisms of seawater in the injection process. In order to do that, the sandstone and carbonate cores were placed in the oven in brine to simulate realistic reservoir conditions. Then, they were aged in crude oil in the oven. After that, they were put in the seawater to recover, and this test is called a spontaneous imbibition test. The spontaneous imbibition test in this study was performed at room temperature to oven temperature 80 oC with different sandstone and carbonate rock with aging time of 1126 hours. The result shows that the impact of seawater on oil recovery in sandstone is higher than carbonate. At higher temperature, the oil recovery is more moderate than low temperature. Likewise, as the aging time increase for both sandstone and carbonate rocks the oil recovery increase.