DEVELOPMENT OF A WEIGHTING PROCEDURE FOR GEOMECHANICAL PARAMETERS INVOLVED IN CO2 STORAGE

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dc.contributor.authorZhumakanova, Dilnaz
dc.date.accessioned2024-06-27T10:08:25Z
dc.date.available2024-06-27T10:08:25Z
dc.date.issued2024-04-19
dc.description.abstractThis study focuses on methodical study of fault activation mechanisms associated with carbon dioxide (CO2) storage, with a focus on determining the underlying geomechanical properties of the caprock. The study uses the Analytic Hierarchy Process (AHP) to prioritize these parameters to improve the process for selecting critical geomechanical design data that underpins the analysis of potential CO2 storage sites. By integrating expert knowledge through a structured questionnaire, the study extends the methodology and provides realistic parameters for advanced numerical simulations. The study highlights the importance of injection pressure as the primary factor, emphasizing its dominant influence, followed by permeability and porosity, which are fundamental to estimating reservoir capacity and fluid dynamics within the reservoir. Conversely, the fault friction angle, although considered the least influential, requires attention due to its conditional influence on fault stability. The new application of AHP in this context represents a significant advance in the field of CO2 storage, offering a systematic approach to geomechanical risk assessment that is essential for storage planning and operational safety. Additionally, the study advances our understanding of key geomechanical parameters, facilitating the development of customized CO2 injection and containment strategies aimed at reducing risk and enhancing site integrity. Such strategic foresight is essential to the progress of carbon capture and storage (CCS) technologies, a critical component of climate change mitigation efforts. In support of these findings, numerical simulations show a direct correlation between injection pressure and total displacement, as well as an inverse relationship with stress ratio, highlighting the importance of optimized injection strategies. The performance of RS2 software in 2D numerical simulations is also confirmed, demonstrating its usefulness in CO2 storage projects, and allowing the influence of additional parameters such as fault friction angle and rock mass fracturing to be explored.en_US
dc.identifier.citationZhumakanova, D. (2024). Development of a weighting procedure for geomechanical parameters involved in CO2 storage. Nazarbayev University School of Mining and Geosciencesen_US
dc.identifier.urihttp://nur.nu.edu.kz/handle/123456789/8052
dc.language.isoenen_US
dc.publisherNazarbayev University School of Mining and Geosciencesen_US
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/us/*
dc.subjectCO2 storageen_US
dc.subjectCarbon Capture and Storageen_US
dc.subjectWeighting procedureen_US
dc.subjectGeomechanical parametersen_US
dc.subjectType of access: Restricteden_US
dc.titleDEVELOPMENT OF A WEIGHTING PROCEDURE FOR GEOMECHANICAL PARAMETERS INVOLVED IN CO2 STORAGEen_US
dc.typeBachelor's thesisen_US
workflow.import.sourcescience

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