水文地质工程地质2026，Vol.53Issue(1)：242-252,11.DOI:10.16030/j.heg.202409038
CO2地质封存过程浅层地下水响应的研究进展与展望
Progress and prospects of the shallow groundwater responding to CO2 geological storage
摘要
Abstract
To clarify the potential impacts of large-scale CO2 injection and the leakage of injected CO2 along with reservoir brine on shallow groundwater,thereby supporting risk prevention and control for leakage in CO2 geological storage projects and the protection of shallow groundwater.A comprehensive literature review was conducted to systematically summarize research progress on the impacts of large-scale CO2 geological storage injection and reservoir fluid leakage migration on shallow groundwater flow fields and water quality.Large-scale CO2 injection leads to reservoir pressure accumulation and pressure disturbance transmission into shallow aquifers,resulting in groundwater level rise,increased pore pressure,and enhanced evapotranspiration.The leakage of CO2 or reservoir brine to shallow aquifers can lead to a decrease in pH and ORP,an increase in alkalinity and electrical conductivity,elevated concentrations of major ions,release and migration of toxic trace metals,and alterations in the biodiversity and metabolic diversity of microbial communities.These complex biogeochemical processes are influenced by the intensity of CO2 and reservoir brine leakage and the hydrogeological conditions of the shallow aquifer.Adsorption and desorption,dissolution and precipitation,and redox reactions are the primary mechanisms governing changes in groundwater quality following CO2 intrusion.Shallow groundwater serves not only as a risk receptor for potential leakage in CO2 geological storage projects but also as an information carrier for assessing storage safety and effectiveness.Therefore,greater emphasis should be placed on researching the impacts and monitoring of shallow groundwater in large-scale CO2 geological storage projects,both to prevent environmental incidents and to provide support for verifying storage effectiveness.关键词
CO2封存/泄漏/浅层地下水/微量元素/微生物Key words
CO2 geological storage/leakage/shallow underground water/microelement/microorganism分类
资源环境引用本文复制引用
杨术刚,刘双星,蔡明玉,薛明,陈强,李兴春,曾瑞华,张坤峰..CO2地质封存过程浅层地下水响应的研究进展与展望[J].水文地质工程地质,2026,53(1):242-252,11.基金项目
中国石油科学研究与技术开发项目(2023ZZ1301) （2023ZZ1301）
深地国家科技重大专项(2024ZD1004206) （2024ZD1004206）
