Experimental Evaluation of Surfactant Assisted SAGD Process

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dc.contributor.advisorMaini, B. B.
dc.contributor.advisorDong, Mingzhe
dc.contributor.authorXie, Yun
dc.contributor.committeememberChen, Shengnan
dc.contributor.committeememberHejazi, Hossein
dc.date2020-02
dc.date.accessioned2019-12-04T18:28:48Z
dc.date.available2019-12-04T18:28:48Z
dc.date.issued2019-11
dc.description.abstractUsing a surfactant as a steam additive for improving SAGD performance has been an intriguing idea for several decades. Some positive laboratory and field results on the Surfactant SAGD (S-SAGD) have been mentioned, yet very limited information has been revealed in the public domain literature. The primary mechanism responsible for improving the performance in S-SAGD also remains unclear. In this study, experiments under SAGD operating conditions were used to evaluate the adaptability of selected surfactants for S-SAGD. Oil recovery improvement was investigated using a one-dimensional sand-pack apparatus at SAGD conditions. Experimental results show that the majority of tested surfactants can achieve a higher initial recovery rate, but only three out of seven tested surfactants increased the final oil recovery factor. The surfactants reduce the interfacial tension (IFT) between the aqueous and oil phase at the steam temperature of 200°C. However, the impact of reduced IFT on recovery is limited, since ultralow IFT (0.001 mN/m) was not achieved. The improvement in oil recovery appears to be related to changes in wettability and relative permeability. The successful surfactants appear to increase the oil relative permeability and reduce the residual oil saturation. In view of considerably higher initial oil production rate and a 10.8% increase in the final recovery factor, the thermally stable Novel 6-2 is recommended for further evaluations as an additive for S-SAGD.en_US
dc.identifier.citationXie, Y. (2019). Experimental Evaluation of Surfactant Assisted SAGD Process (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/37320
dc.identifier.urihttp://hdl.handle.net/1880/111310
dc.language.isoengen_US
dc.publisher.facultySchulich School of Engineeringen_US
dc.publisher.institutionUniversity of Calgaryen
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.en_US
dc.subjectChemical Engineeringen_US
dc.subjectPetroleum Engineeringen_US
dc.subjectSAGDen_US
dc.subjectOil Sanden_US
dc.subject.classificationEngineeringen_US
dc.subject.classificationEngineering--Chemicalen_US
dc.subject.classificationEngineering--Petroleumen_US
dc.titleExperimental Evaluation of Surfactant Assisted SAGD Processen_US
dc.typemaster thesisen_US
thesis.degree.disciplineEngineering – Chemical & Petroleumen_US
thesis.degree.grantorUniversity of Calgaryen_US
thesis.degree.nameMaster of Science (MSc)en_US
ucalgary.item.requestcopytrueen_US
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