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Numerical study of physico- chemical interactions for CO2 sequestration and geothermal energy utilization in the Ordos Basin, China

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Numerical study of physico- chemical interactions for CO2 sequestration and geothermal energy utilization in the Ordos Basin, China (Volume 24) (English shop)

Hejuan Liu (Author)

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ISBN-13 (Hard Copy) 9783954048427
ISBN-13 (eBook) 9783736948426
Language English
Page Number 285
Edition 1. Aufl.
Book Series Schriftenreihe des Energie-Forschungszentrums Niedersachsen (EFZN)
Volume 24
Publication Place Göttingen
Place of Dissertation Clausthal
Publication Date 2014-11-10
General Categorization Dissertation
Departments Physical chemistry
Petrology, Science of sites of fossil preservation
Engineering
Keywords CO2 sequestration, Geothermal production, Ordos Basin, Coupled processes, Geochemical interaction, Fluid flow, Porous media, Rock mechanics, Site selection
URL to External Homepage https://www.facebook.com/hejuan.liu
Description

In this dissertation, three simulators (i.e. TOUGH2MP, TOUGHREACT and FLAC3D) were used to simulate the complex physical and chemical interactions induced by CO2 sequestration. The simulations were done instages, ranging from the two phase (water and CO2) fluid flow (H2), through coupled hydro-mechanical effects (H2M) and geochemical responses (i.e. CO2-water-rock interactions (H2C)), to the extension of CCS to CCUS by the application of combined geothermal production and CO2 sequestration technologies. The findings of this study are essential for a thorough understanding of the complex interactions in the multiphase, multicomponent porous media controlled by different physical and chemical mechanisms. Furthermore, the simulation results will provide an invaluable reference for field operations in CCS projects, especially for the full-integration pilot scale CCS project launched in the Ordos Basin. Subsequently, a preliminary site selection scheme for the combined geothermal production and CO2 sequestration was set up, which considered various factorsinvolved in site selection, ranging from safety, economical, environmental and technical issues. This work provides an important framework for the combined geothermal production and CO2 sequestration project. However, further numerical and field studies are still needed to improve on a series of criteria and related parameters necessary for a better understanding of the technology.