Author

Tao Zhang

ORCID Identifier(s)

0000-0002-8750-1435

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

Comments

Degree granted by The University of Texas at Arlington

Available for download on Friday, August 01, 2025

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