Effect of Heating Rate on Thermally Induced Pore Water Pressure and Crack Evolution in Clay and Shales

Faghihinia, Masoomeh

Effect of Heating Rate on Thermally Induced Pore Water Pressure and Crack Evolution in Clay and Shales

dc.contributor.advisor	Wong, Ron Chik-Kwong
dc.contributor.author	Faghihinia, Masoomeh
dc.contributor.committeemember	Wan, Richard G.
dc.contributor.committeemember	Duncan, Neil Alexander
dc.date	2024-05
dc.date.accessioned	2024-01-29T19:17:51Z
dc.date.available	2024-01-29T19:17:51Z
dc.date.issued	2024-01-19
dc.description.abstract	This thesis investigates the hydrothermal behavior of clay shale samples, with a specific emphasis on how heating rates influence temperature distribution and the evolution of pore pressure under elevated temperatures. Clay shales, characterized by their extensive geological presence and low hydraulic conductivity, carry immense importance across a wide array of applications, including their pivotal role as caprock in oil and gas reservoirs, geological storage of carbon dioxide, and nuclear waste storage. Ensuring the integrity of clay shale barriers is of paramount concern, as any compromise in their stability can lead to unintended releases of undesirable substances into potable water zones above or even onto the ground surface, potentially resulting in catastrophic consequences. The fundamental objective of this study revolves around gaining insights into clay shales response to heightened thermal loading and the potential excess pore fluid pressure generation. The research establishes a robust foundation by thoroughly investigating characteristics and material properties of clay shale and their dependencies on temperature. To achieve these objectives, the study employs FLAC3D software to conduct simulations on a three-dimensional cylindrical clay shale specimen utilizing an isotropic thermo-elastic model, subjecting it to temperatures of up to 600°C at varying heating rates. Additionally, the research explores the interacting coupled effect of hydraulic and thermal diffusion, employing a series of numerical simulations to shed light on this intricate relationship. Furthermore, this research investigates the integration of cutting-edge Machine Learning (ML) and Computer Vision (CV) techniques to enhance the precision, efficiency, and accuracy of thermal crack detection, localization, and segmentation. This innovative approach aims to overcome the challenges associated with visually identifying and analyzing thermal cracks, including the time-consuming nature of these endeavors and the potential for human errors.
dc.identifier.citation	Faghihinia, M. (2024). Effect of heating rate on thermally induced pore water pressure and crack evolution in clay and shales (Master's/Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.
dc.identifier.uri	https://hdl.handle.net/1880/118024
dc.language.iso	en
dc.publisher.faculty	Graduate Studies
dc.publisher.institution	University of Calgary
dc.rights	University 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.subject	Thermo hydro mechanical analysis
dc.subject	Clay shale
dc.subject	Heating rate
dc.subject	High temperature
dc.subject	Thermal crack
dc.subject.classification	Engineering--Civil
dc.title	Effect of Heating Rate on Thermally Induced Pore Water Pressure and Crack Evolution in Clay and Shales
dc.type	master thesis
thesis.degree.discipline	Engineering – Civil
thesis.degree.grantor	University of Calgary
thesis.degree.name	Master of Science (MSc)
ucalgary.thesis.accesssetbystudent	I do not require a thesis withhold – my thesis will have open access and can be viewed and downloaded publicly as soon as possible.