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STUDY OF ENHANCED OIL RECOVERY BY LIQUID CARBON DIOXIDE INJECTION

IRAWAN, FIKRI (2010) STUDY OF ENHANCED OIL RECOVERY BY LIQUID CARBON DIOXIDE INJECTION. Masters thesis, UNIVERSITI TEKNOLOGI PETRONAS.

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Abstract

Typical high residual oil saturation after primary and secondary recovery encourages the application of EOR methods. Especially in a mature field with less force from its driving mechanisms due to the nature of the reservoir when it was discovered or even after long time of production. Based on literature study, CO2 injection has been an excellent solvent for EOR because of its miscibility ability with crude oil at lower pressure compared to other gases such as Nitrogen and Hydrocarbon gases. However, the injection of CO2 in gas state stimulates the occurrence of early gas breakthrough at the producer due to fingering phenomena. The objective of this study is to investigate oil recovery by liquid CO2 injection as EOR displacement fluid. Additional study on Interfacial Tension between CO2 and the crude oil was conducted and the Minimum Miscibility Pressure was estimated by using the combination of Lasater and Holm-Josendal correlation. Berea Sandstone core plug and one of Malaysian basin light crude oil was used as experiment sample in this study. Oil recovery was generated by core flooding test to collect the produced oil during core displacement. From the results of the experiments, it is concluded that oil recovery by water floods were in such limit of 36.6% until 38% after injecting 9 PV of water. Meanwhile, the results of CO2 injection in this study gave various and interesting recovery over the residual oil in place with range of 24.7% until 72.6% depend on inlet pressures (950- 1500 psig) and injection temperatures (5-20°C) of CO2. The cumulative oil recovery was recorded after injecting 10 PV of liquid CO2.

Item Type: Thesis (Masters)
Subject: UNSPECIFIED
Divisions: Geoscience and Petroleum Engineering
Depositing User: Users 5 not found.
Date Deposited: 05 Jun 2012 08:28
Last Modified: 25 Jan 2017 09:43
URI: http://utpedia.utp.edu.my/id/eprint/2894

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