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All Journal Journal of Petroleum and Geothermal Technology
Madi Abdullah Naser
Petroleum Engineering, Faculty of Engineering, Misrata University-Libya
Earth & Planetary Sciences Energy Engineering

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Comparison of Different Gases Injection Techniques for Better Oil Productivity Mohammed Samba; Yiqiang Li; Madi Abdullah Naser; Mahmoud O Elsharafi
Journal of Petroleum and Geothermal Technology Vol 2, No 1 (2021): May
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jpgt.v2i1.4009

Abstract

There are many known enhanced oil recovery (EOR) methods and every method has its criteria to use it. Some of those methods are gas injection such as CO2 injection, N2 and hydrocarbon gas injection. Where the CO2 has been the largest contributor to global EOR. Gas injection can be classified into two main types; continues gas injection (CGI) and water alternating gas injection (WAG). The objective of this research is to propose initial gases injection plan of the X field to maximize the total oil recovery. The feasibility study of different gases to maintain pressure and optimize oil recovery have been examined on a simple mechanistic reservoir model of considerably depleted saturated oil reservoir. In order to maximize the total oil recovery, the simulation study was conducted on 3-phase compositional simulation model. For more optimization, a sensitivity study was conducted on the injection cycling and component ratios. A sensitivity study was also conducted on the following parameters to study their effects on the overall field’s recovery such as flow rate and bottom-hole pressure. Results obtained in this paper shows that, the WAG CO2 injection was found to be significantly more efficient than different gas injection and continues gas injection. The oil recovery depends not only on the fluid-to-fluid displacement but also on the compositional phase behavior. 
Co-Authors Mahmoud O Elsharafi Mohammed Samba Yiqiang Li