Graduation Semester and Year
2023
Language
English
Document Type
Dissertation
Degree Name
Doctor of Philosophy in Earth and Environmental Science
Department
Earth and Environmental Sciences
First Advisor
Qinhong Hu
Abstract
This study covers the application of continuum mechanics in the realm of rock work in geological studies. Continuum mechanics encompasses two major branches: fluid mechanics that deals with fluid behavior, and solid mechanics pertaining to the behavior of rock media. The research focuses on comprehending the mechanical behavior of rocks as a continuous mass, offering a comprehensive perspective for analyzing geological structures, fluid flow, and rock mechanics. Under the framework of continuum mechanics applied to rock media, following the sequence of the rock/solid properties, fluid flow properties, and the fluid-solid coupling behavior, this dissertation is divided into four sections, each addressing a unique aspect of the subject matter stated above. The dissertation presents an analysis of true-triaxial hydraulic fracturing of granite samples for fluid-solid coupling processes during the rock failure, followed by an integrated technique for rapid gas permeability measurement of tight rock media. Then, this works elucidates shale wettability using a contrast-matching technique of Small Angle Neutron Scattering (SANS), investigating the heterogeneity and overturning of wettability at different pore intervals. This research is significant in the field of geo-energy stewardship, which involve fluid-solid coupling phenomena in poromechanics, includes shale petroleum development, enhanced geothermal stimulation, CO2 sequestration, H2 storage, nuclear waste repository, and underground water management.
Keywords
Hydraulic fracturing, Permeability, Wettability, Small angle neutron scattering, Continuum mechanism
Disciplines
Earth Sciences | Physical Sciences and Mathematics
License
This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 4.0 International License.
Recommended Citation
Zhang, Tao, "Experimental and theoretical studies of fluid-solid coupling processes of tight rock media" (2023). Earth & Environmental Sciences Dissertations. 72.
https://mavmatrix.uta.edu/ees_dissertations/72
Comments
Degree granted by The University of Texas at Arlington