Show simple item record

dc.contributor.advisorChen, Zhangxing (John)
dc.contributor.authorBao, Xia
dc.date.accessioned2012-12-04T17:35:50Z
dc.date.available2013-06-15T07:01:36Z
dc.date.issued2012-12-04
dc.date.submitted2012en
dc.identifier.citationBao, X. (2012). Thermal Simulation and Optimization of SAGD Process: Case Study on Surmont Pilot Project (Unpublished master's thesis). University of Calgary, Calgary, AB. doi:10.11575/PRISM/28308en_US
dc.identifier.urihttp://hdl.handle.net/11023/333
dc.description.abstractOverlying top water and gas thief zones have a detrimental effect on the Steam-Assisted Gravity Drainage (SAGD) recovery process since steam penetrates into these zones which results in great heat loss. Due to the presence of these top thief zones, recovering bitumen by the SAGD process has become challenging for the Athabasca oil sands. Numerical simulations, laboratory experiments and field production data have demonstrated that oil production tends to decrease as the depletion of top gas occurs; also, heat loss to the overlying thief zone will be more significant when a top water zone is present. Indeed, SAGD is a coupled geomechanical, thermal and fluid flow problem, and continuous steam injection in this process changes reservoir pore pressure and temperature, which can alter the effective stress in-situ. Therefore, to represent the physics of thermal flow and soil geomechanics, a coupled geomechanical simulation that solves the flow and stress equations simultaneously in the reservoir is crucial for modeling the SAGD process. The objective of this study is to construct a 3D geostatistical model for a Surmont pilot and implement coupled geomechanical modeling for the SAGD process aiming at investigating the impact of dilation and thermal expansion on the surface subsidence and bitumen recovery. Reasonable history match of oil and water rates has been achieved and steam chamber profiles have been conformed to the field data from the observation wells. An Expanding Solvent Steam-Assisted Gravity Drainage (ES-SAGD) process has been investigated on a full field-based heterogeneous simulation model using an optimal solvent mixture. Finally, geomechanical effects on the ES-SAGD process are investigated through an iterative coupling approach.en_US
dc.language.isoeng
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--Petroleum
dc.subject.classificationSAGDen_US
dc.subject.classificationThermal simulationen_US
dc.subject.classificationReservoir Geomechanicsen_US
dc.subject.classificationComputer-Assisted History Matchingen_US
dc.titleThermal Simulation and Optimization of SAGD Process: Case Study on Surmont Pilot Project
dc.typemaster thesis
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/28308
thesis.degree.nameMaster of Science
thesis.degree.nameMS
thesis.degree.nameMSc
thesis.degree.disciplineChemical and Petroleum Engineering
thesis.degree.grantorUniversity of Calgary
atmire.migration.oldid466
dc.publisher.placeCalgaryen


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record