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Numerical study of coupled THM/C processes related to geo-energy production

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Numerical study of coupled THM/C processes related to geo-energy production (Volumen 55)

Yang Gou (Autor)

Previo

Lectura de prueba, PDF (330 KB)
Indice, PDF (110 KB)

ISBN-13 (Impresion) 9783736998209
ISBN-13 (E-Book) 9783736988200
Idioma Inglés
Numero de paginas 244
Edicion 1.
Serie Schriftenreihe des Energie-Forschungszentrums Niedersachsen (EFZN)
Volumen 55
Lugar de publicacion Göttingen
Lugar de la disertacion Clausthal-Zellerfeld
Fecha de publicacion 20.06.2018
Clasificacion simple Tesis doctoral
Area Ingeniería
Palabras claves Numerical simulation, thermo-hydro-mechanical-chemical processes, geo-energy, Energiewende, geothermal energy, TOUGH2MP, FLAC3D, CO2 storage, CO2EGR, Altmark, hydraulic fracturing, geo-reservoirs, multiphase flow, multicomponent flow, crack tensor, naturally fractured rock mass, fault, tight gas, tight oil, stress and deformation, induced seismicity, Unterhaching
URL para pagina web externa https://www.efzn.de/de/ueber-uns/oeffentlichkeitsarbeit/efzn-schriftenreihe/
Descripcion

In this thesis a parallel simulation platform, namely TOUGH2MP-FLAC3Dplus, was further developed by linking the multiphase multicomponent flow code TOUGH2MP and the further developed geomechanical code FLAC3Dplus for large-scale simulation of the coupled THM/C processes related to geo-energy production. A series of mathematical/physical models were developed and implemented in this platform, including (1) an improved equation of state for CO2-CH4-H2O-NaCl system which considers the effect of salt on phase partition and fluid properties in gas reservoirs; (2) a modified coupling approach for the simulation of hydraulic fracturing in tight geo-reservoirs, which considers the multiphase multicomponent leakoff effects; (3) a thermo-hydro-mechanical model based on a crack tensor for naturally fractured rock masses and faults. All these verified models have been applied in three different case studies, including CO2 enhanced gas recovery (EGR) in the Altmark natural gas field; (2) Hydraulic fracturing in three different types of geo-reservoirs (tight gas, oil and geothermal reservoir); (3) Geothermal energy utilization induced seismicity in Unterhaching. The developed models and the numerical platform can be used to predict the coupled THM/C behavior of rock formations, to optimize the CO2-EGR and hydraulic fracturing in tight geo-reservoirs, as well as reduce the geo-risks related to geo-energy production.