Effect of Water Alternating Gas (WAG-N2 ) after Water or Gas Flooding on Crude Oil Recovery in Sandstone Reservoirs

Alagorni, Abubaker H. and Zulkefli, Yaacob and Nour, A. H. and Radzuan, Junin (2019) Effect of Water Alternating Gas (WAG-N2 ) after Water or Gas Flooding on Crude Oil Recovery in Sandstone Reservoirs. In: IOP Conference Series: Materials Science and Engineering, Energy Security and Chemical Engineering Congress, 17-19 July 2019 , Kuala Lumpur, Malaysia. pp. 1-15., 736 (022015). ISSN 1757-899X

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Abstract

Previous studies showed that nitrogen injection could recover oil up to 45-90 % of the Original Oil in Place (OOIP) of the reservoir. Additionally, when applying Water Alternating Gas (WAG-N2), recovery can be improved by combining gas and water and having better gas mobility control by reducing viscous fingering and density tonging, as well as contacting the un-swept zones, leading to an improved microscopic displacement. The objective of this study is to determine the total Oil Recovery Factor (ORF) of WAG-N2 process either after Water Flooding (WF) or after Gas Flooding (GF) in sandstone reservoirs. The results showed that with the following conditions: 38.8° API gravity oil, injection rate of 0.6cm3/m, injection pressure of 2000 psi (1378.59 kpa), WAG rate of 1:1, and Sand pack temperature of 70°C, the maximum ultimate ORF was 71.2 % in WAG after WF and 52.42 % of WAG after GF. On the other hand, WF provided ORF of 65.6 % when compared with GF recovery (29.03 %).

Item Type: Conference or Workshop Item (Lecture)
Uncontrolled Keywords: Water Alternating Gas (WAG-N2), Oil Recovery Factor (ORF)
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Institute of Postgraduate Studies
Depositing User: Noorul Farina Arifin
Date Deposited: 11 May 2021 00:57
Last Modified: 11 May 2021 00:57
URI: http://umpir.ump.edu.my/id/eprint/25344
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