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dc.contributor.advisorGutierrez, Marte S.
dc.contributor.authorFrash, Luke P.
dc.date.accessioned2007-01-03T05:04:26Z
dc.date.accessioned2022-02-09T09:03:42Z
dc.date.available2007-01-03T05:04:26Z
dc.date.available2022-02-09T09:03:42Z
dc.date.issued2014
dc.date.submitted2014
dc.identifierT 7648
dc.identifier.urihttp://hdl.handle.net/11124/17002
dc.descriptionIncludes illustrations (some color).
dc.descriptionIncludes bibliographical references (pages 128-132).
dc.description.abstractThe primary objectives of this research were to experiment with hydraulic fracturing in the laboratory to gain additional understanding of the fracturing process in unconventional rocks having low natural permeability and heterogeneous structures. Focus topics of this research included experimentation with a mechanical impulse hydraulic fracturing method, measurement of critical state hydraulic fracture aperture, laboratory scale modeling of EGS, and an investigation of grain-scale effects on 3D hydraulic fracture geometry. Fractured materials included acrylic, concrete, granite and limestone with specimen sizes up to 300x300x300 mm[superscript 3] cubical blocks. Fracturing fluids included water, brine, oil and epoxies. Applied boundary conditions varied between experiments from unconfined to true-triaxially confined with heating applied in some instances. Data collected during experiments included pressures, flow rates, acoustic emissions (AE), temperatures, strains and video with intended future application for calibration of models. Cross-sections were cut through the test specimens after hydraulic fracture stimulation to investigate and measure fracture geometry at both the grain-scale and macro-scale. Procedures for using the true-triaxial apparatus and associated control systems developed for this project are detailed in appendices to guide future use of the equipment. Supplemental data and results from the hydraulic fracture of 13 specimens are also included.
dc.format.mediumborn digital
dc.format.mediumdoctoral dissertations
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado School of Mines. Arthur Lakes Library
dc.relation.ispartof2014 - Mines Theses & Dissertations
dc.rightsCopyright of the original work is retained by the author.
dc.subjectenhanced geothermal systems
dc.subjectwell stimulation
dc.subjectimpulse fracturing
dc.subjecthydraulic fracturing
dc.subjectgranular fracture mechanics
dc.subjectfracture fluid flow
dc.subject.lcshHydraulic fracturing
dc.subject.lcshHydraulic fracturing -- Simulation methods
dc.subject.lcshRocks -- Permeability
dc.subject.lcshRocks -- Fracture
dc.subject.lcshInhomogeneous materials
dc.subject.lcshFluid mechanics
dc.titleLaboratory-scale study of hydraulic fracturing in heterogeneous media for enhanced geothermal systems and general well stimulation
dc.typeText
dc.contributor.committeememberTutuncu, Azra
dc.contributor.committeememberRevil, André, 1970-
dc.contributor.committeememberKiousis, Panagiotis Demetrios, 1956-
thesis.degree.nameDoctor of Philosophy (Ph.D.)
thesis.degree.levelDoctoral
thesis.degree.disciplineCivil and Environmental Engineering
thesis.degree.grantorColorado School of Mines


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