Global Sensitivity Analysis of Leakage Risk for CO₂ Geological Sequestration in the Saline Aquifer of Yancheng Formation in Subei Basin

详细信息   

• 责任者：Zheng Fei (Key Laboratory of Surficial Geochemistry ; Ministry of Education ; School of Earth Science and Engineering ; Nanjing University ; Nanjing 210093 ; China) ; Shi Xiaoqing
• 刊名：Geological Journal of China Universities
• 出版年：2012
• 卷期：18(2)
• 页码：p.232-238
• issnNo：ISSN1006-7493
• isbnNo：CN32-1440/P

摘要

 
    
    

TOUGH2/ECO2N
    code was used to simulate transportation of CO₂ plume in the deep
    saline aquifer of lower part of the Yancheng Formation in Subei basin. A fault
    was added to the conceptual model to evaluate the leakage risk after CO₂
    injection. Simulation results indicate that the effect of multilayer capping
    for CO₂ sequestration is not good because of the clay strata with
    small thickness and relatively high permeability, although the lower part of
    the Yancheng Formation has three sequences’ structure （multiple sand-clay
    layers） and the sand stratum
    has high permeability and high porosity.