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Water-Rock-Gas Interaction of CO2-Plume Geothermal System in Quantou Formation of Songliao Basin

Shi Yan1,2, Feng Bo1, Xu Tianfu1, Wang Fugang1, Feng Guanhong1, Tian Hailong1, Lei Hongwu1   

  1. 1.College of Environment and Resources/Key Laboratory of Groundwater Resources and Environment,Ministry of Education,Jilin University,Changchun130021, China;
    2.College of Municipal and Environmental Engineering, Jilin Jianzhu University, Changchun130118, China
  • Received:2014-04-24 Online:2014-11-26 Published:2014-11-26

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Abstract:

CO2 plume geothermal systems (CPGS) is an engineering technology for integrating carbon geological storage with geothermal energy development. When the supercritical CO2 is injected into a deep reservoir, the pH of reservoir water will be decreased. The surrounding rock will be dissolved or precipitated, so the porosity and permeability of the formation will also be changed. Based on a potential geothermal reservoir of Quantou Formation of Songliao basin, experiment and numerical simulation are used to investigate water-rock-gas chemical interaction. The research results show that the experimental process is more sensitive to temperature change, and less affected by pressure. This study will provide a theoretical basis and technical support to future CPGS project in China.

Key words: CO2-plume geothermal system, water-rock-gas reaction, Songliao , basin

CLC Number: 

  • P641.69
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