Assessment and Improvement of Underground Coal Gasification Modelling

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dc.contributor.advisorChen, Zhangxin
dc.contributor.advisorFarouq-Ali, S. M.
dc.contributor.authorJiang, Liangliang
dc.contributor.committeememberAbedi, Jalal
dc.contributor.committeememberJeje, Ayodeji A.
dc.contributor.committeememberGao, Yang
dc.contributor.committeememberGupta, Subodh C.
dc.date2019-06
dc.date.accessioned2018-12-14T18:30:14Z
dc.date.available2018-12-14T18:30:14Z
dc.date.issued2018-12-13
dc.description.abstractUnderground coal gasification (UCG) is a process to convert coal in-situ into combustible synthetic gas (syngas). Oxidant is brought downhole through an injector for coal combustion and gasification while resulting syngas is extracted from a producer. UCG offers a better way to exploit coal resources over conventional mining with smaller environmental footprint. It has gained considerable attention in emerging economies, e.g., China and India, which are coal-rich nations and have an ever-increasing energy demand. As a complex coal thermal recovery process involving multi-physics and kinetics, knowledge gaps remain before UCG reaches large-scale commercial implementation. To enhance knowledge, this work applies a modified simulation tool to model certain important aspects of UCG, i.e., assessing critically the use of a reservoir simulator to model UCG, exploring the theory of a prior linking method of reverse combustion, studying the role of coal cleats in governing fluid flow and heat transport with regard to aquifer contamination, and investigating the progressive changes in coal pores associated with UCG. Additional modelling efforts were made to explore an extended practical importance of UCG. The prospect of applying UCG to mobilize contiguous heavy oil is studied and the feasibility of linking UCG with carbon storage and sequestration is examined.en_US
dc.identifier.citationJiang, L. (2018). Assessment and Improvement of Underground Coal Gasification Modelling (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/34970
dc.identifier.urihttp://hdl.handle.net/1880/109348
dc.language.isoenen_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.subjectUnderground coal gasificationen_US
dc.subjectCoal modellingen_US
dc.subjectCoal utilizationen_US
dc.subject.classificationEngineeringen_US
dc.titleAssessment and Improvement of Underground Coal Gasification Modellingen_US
dc.typedoctoral thesisen_US
thesis.degree.disciplineEngineering – Chemical & Petroleumen_US
thesis.degree.grantorUniversity of Calgaryen_US
thesis.degree.nameDoctor of Philosophy (PhD)en_US
ucalgary.item.requestcopytrue
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