Geochemical and solute transport modelling for CO₂ storage, what to expect from it?

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• 作者：Irina Gaus ; Pascal Audigane ; Laurent André ; Julie Lions ; Nicolas Jacquemet ; Pierre Durst ; Isabelle Czernichowski-Lauriol ; Mohamed Azaroual
• 关键词：Solute transport modelling ; Geochemical modelling ; Carbon storage ; Geochemical reactions
• 刊名：International Journal of Greenhouse Gas Control
• 出版年：2008
• 出版时间：October 2008
• 年：2008
• 卷：2
• 期：4
• 页码：605-625
• 全文大小：1012 K

文摘

Geochemistry plays an important role when assessing the impact of CO₂ storage. Due to the potential corrosive character of CO₂, it might affect the chemical and physical properties of the wells, the reservoir and its surroundings and increase the environmental and financial risk of CO₂ storage projects in deep geological structures. An overview of geochemical and solute transport modelling for CO₂ storage purposes is given, its data requirements and gaps are highlighted, and its progress over the last 10 years is discussed. Four different application domains are identified: long-term integrity modelling, injectivity modelling, well integrity modelling and experimental modelling and their current state of the art is discussed. One of the major gaps remaining is the lack of basic thermodynamical and kinetic data at relevant temperature and pressure conditions for each of these four application domains. Real challenges are the coupled solute transport and geomechanical modelling, the modelling of impurities in the CO₂ stream and pore-scale modelling applications.