Fracturing in Deep Boreholes: Stress-, Structural-, & Lithology-controlled Fracture Initiation and Propagation in Deep Geothermal Boreholes in the Upper Jurassic Carbonate Rocks of the North Alpine Foreland Basin

Stockinger, Georg Maximilian

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Lehrstuhl für Ingenieurgeologie (Prof. Thuro)

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Original title:: Fracturing in Deep Boreholes
Original subtitle:: Stress-, Structural-, & Lithology-controlled Fracture Initiation and Propagation in Deep Geothermal Boreholes in the Upper Jurassic Carbonate Rocks of the North Alpine Foreland Basin
Translated title:: Bruchprozesse in tiefen Bohrlöchern
Translated subtitle:: Spannungs-, Trennflächen- und Lithologie-gesteuerte Rissbildung und -ausbreitung in tiefen Geothermiebohrungen in Karbonatgesteinen des Oberjura des Nordalpinen Vorlandbeckens
Author:: Stockinger, Georg Maximilian
Year:: 2021
Document type:: Dissertation
Faculty/School:: TUM School of Engineering and Design
Advisor:: Thuro, Kurosch (Prof. Dr.)
Referee:: Thuro, Kurosch (Prof. Dr.), Backers, Tobias (Prof. Dr.), Drews, Michael (Prof. Dr.)
Language:: en
Subject group:: GEO Geowissenschaften
Keywords:: deep boreholes, rock mechanical properties of carbonate rocks, stress transformation, finite-discrete element modeling (FDEM), geothermal energy, North Alpine Foreland Basin
Translated keywords:: Tiefe Bohrlöcher, Felsmechanische Eigenschaften von Karbonatgesteinen, Spannungsrotation, Finite-diskrete Element Modellierungen (FDEM), Nordalpines Vorlandbecken
TUM classification:: GEO 322
Abstract:: Upper Jurassic carbonates, the source of deep geothermal energy in the North Alpine Foreland Basin (SE Germany), have been insufficiently studied with regard to their economic utilization. Focusing on fracture initiation and propagation around the borehole, this study characterizes the mechanical, structural, and stress-related behavior of carbonate rocks. Cutting-edge empirical and numerical approaches support recommendations on deep core drilling and orientations of productive geothermal wells. «
Upper Jurassic carbonates, the source of deep geothermal energy in the North Alpine Foreland Basin (SE Germany), have been insufficiently studied with regard to their economic utilization. Focusing on fracture initiation and propagation around the borehole, this study characterizes the mechanical, structural, and stress-related behavior of carbonate rocks. Cutting-edge empirical and numerical approaches support recommendations on deep core drilling and orientations of productive geothermal wells... »
Translated abstract:: Karbonate des Oberjura, Ursprung tiefer Geothermie im Nordalpinen Vorlandbecken (SO-Deutschlands), sind für eine ökonomische Nutzung nur unzureichend erforscht. Mit Fokus auf Rissbildung und -ausbreitung um das Bohrloch charakterisiert diese Arbeit das mechanische, strukturelle und spannungsbedingte Verhalten von Karbonaten. Modernste empirische und numerische Ansätze stützen Empfehlungen zu tiefen Kernbohrungen und zur Orientierung produktiver Geothermiebohrungen.
ISBN:: 978-3-030-94568-8
WWW:: https://mediatum.ub.tum.de/?id=1591347
Date of submission:: 13.01.2021
Oral examination:: 06.05.2021
Last change:: 15.03.2022
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