Alagorni, A. H. and Yaacob, Z. and Nour, A. H. and Junin, Radzuan (2020) Effect of water alternating gas (WAG-N2) after water or gas flooding on crude oil recovery in sandstone reservoirs. In: Energy Security and Chemical Engineering Congress 2019, ESChE 2019, 17 July 2019 - 19 July 2019, Kuala Lumpur, Malaysia.
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Official URL: http://dx.doi.org/10.1088/1757-899X/736/2/022015
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 (Paper) |
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| Uncontrolled Keywords: | WAG-N2, recovery, sandstone reservoirs |
| Subjects: | T Technology > TP Chemical technology |
| Divisions: | Chemical and Energy Engineering |
| ID Code: | 93551 |
| Deposited By: | Yanti Mohd Shah |
| Deposited On: | 30 Nov 2021 08:33 |
| Last Modified: | 30 Nov 2021 08:33 |
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