Effect of Residual Oxygen in Carbon Dioxide on Swan Hills Light Oil

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atmire.migration.oldid2710
dc.contributor.advisorMoore, Robert Gordon
dc.contributor.advisorMehta, Sudarshan
dc.contributor.authorWang, Xiaoqing
dc.date.accessioned2014-09-30T20:57:16Z
dc.date.available2014-11-17T08:00:50Z
dc.date.issued2014-09-30
dc.date.submitted2014en
dc.description.abstractLow Temperature Oxidation (LTO) reactions are known to modify the composition and properties of crude oils during air injection process such as In Situ Combustion/High Pressure Air Injection. What is less understood is the effect of these reactions when residual oxygen is present in a CO2 stream that is injected into a light oil reservoir during an EOR/CO2 sequestration process. The objective of this study is to examine the compositional changes of a sample of Swan Hills light oil due to low temperature oxidation reactions during CO2 flooding. The experimental data were generated by Jia (2007), in which CO2 was injected into Swan Hills light oil with oxygen as an impurity. The experiments were performed in batch reactors under different temperatures, initial pressures, oxygen concentrations in CO2, and times. Kinetic model development for light oil in this research is based on Jia’s Athabasca bitumen LTO model. The model proposed in this thesis involves phase behavior and mass transfer process during the mixing of the injected fluid and the light oil. Oxygen addition and oxygen induced cracking reactions were assumed to happen in the hydrocarbon rich phase with combustion reactions occurring in both the hydrocarbon rich and CO2 rich phases. This model describes detailed kinetic mechanisms and concentration changes of individual pseudo-components during the LTO reactions. To simplify the calculation process, the hydrocarbon is characterized in terms of maltenes, asphaltenes and coke. The model results show that for light oil LTO reactions, phase behavior plays an important role. The asphaltenes product may restrict oxygen from transferring from one phase to another at low temperatures. Five reactions were proposed and the kinetic parameters were optimized to meet satisfactory results.en_US
dc.identifier.citationWang, X. (2014). Effect of Residual Oxygen in Carbon Dioxide on Swan Hills Light Oil (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/25806en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/25806
dc.identifier.urihttp://hdl.handle.net/11023/1881
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectEngineering--Chemical
dc.subjectEngineering--Petroleum
dc.subject.classificationLow Temperature Oxidationen_US
dc.subject.classificationPhase Behavioren_US
dc.subject.classificationMass transferen_US
dc.subject.classificationCO2 floodingen_US
dc.subject.classificationIn-Situ Combustionen_US
dc.titleEffect of Residual Oxygen in Carbon Dioxide on Swan Hills Light Oil
dc.typemaster thesis
thesis.degree.disciplineChemical and Petroleum Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
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