• Login
    View Item 
    •   Home
    • Theses & Dissertations
    • 2018 - Mines Theses & Dissertations
    • View Item
    •   Home
    • Theses & Dissertations
    • 2018 - Mines Theses & Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of Mines RepositoryCommunitiesPublication DateAuthorsTitlesSubjectsThis CollectionPublication DateAuthorsTitlesSubjects

    My Account

    Login

    Mines Links

    Arthur Lakes LibraryColorado School of Mines

    Statistics

    Display Statistics

    Hydraulic fracture modeling of an enhanced geothermal system (EGS) experiment

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    Kutun_mines_revised.pdf
    Size:
    18.39Mb
    Format:
    PDF
    Download
    Author
    Kutun, Kagan
    Advisor
    Miskimins, Jennifer L.
    Ozkan, E.
    Date issued
    2018
    Keywords
    enhanced geothermal systems
    fracture modeling
    EGS Collab
    hot dry rock
    FORGE
    
    Metadata
    Show full item record
    URI
    https://hdl.handle.net/11124/172832
    Abstract
    Enhanced geothermal systems (EGS) are analogous to the unconventional reservoirs of the oil and gas industry in size and extent. EGS reservoirs lack the presence of a reservoir fluid and a naturally permeable rock. The total energy reserves that can be classified as EGS are larger and more numerous compared to conventional geothermal systems. Unfortunately, they cannot be produced by conventional means. In order to capitalize on EGS, one must artificially induce a permeable network within these mostly igneous/crystalline rocks. The fractures allow the fluid, while being circulated from an injection to a production well, to harvest and bring some of the in-situ heat to surface. Abstract The EGS Collab is a research project sponsored by the United States Department of Energy. The aim of the project is to provide a test bed at intermediate scale with the main focus on understanding and prediction permeability enhancement in crystalline rocks. The project involves the collaboration of multiple national research laboratories and universities. The experiments take place 4850 ft below the surface in Sanford Underground Research Facility (SURF) located at Lead, South Dakota. Abstract In this research, the behavior of hydraulic fractures in an EGS setting is investigated numerically, using CFRAC, a hydraulic fracture simulator, to support EGS Collab. The work encompasses the prediction of the hydraulic fractures which are created within SURF, the preliminary investigations of the experimental results, and the investigation of the model's behavior in a crystalline rock setting. Abstract The modeling process produced results that agree with initial field results. The experimental hydraulic fractures are affected by the presence of the mine drift and natural fractures. Presence of a natural fracture halted the growth of the hydraulic fracture. Furthermore, the preliminary analysis of the experimental data showed that an active natural fracture network can influence the falloff signal to a degree that the closure events are masked completely.
    Rights
    Copyright of the original work is retained by the author.
    Collections
    2018 - Mines Theses & Dissertations

    entitlement

     
    DSpace software (copyright © 2002 - 2023)  DuraSpace
    Quick Guide | Contact Us
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.