华侨大学学报（自然科学版）2024，Vol.45Issue(2)：136-149,14.DOI:10.11830/ISSN.1000-5013.202403004
CO2封存诱发近断层活化机制研究进展
Research Progress on Mechanism of Near-Fault Reactivation Induced by CO2 Geological Storage
摘要
Abstract
The typical cases of seismicity monitored in CO2 geological storage(CGS)projects are summa-rized.Combining the theory of injection-induced fault instability,the mechanism of near-fault reactivation un-der the effect of thermo-hydro-mechanical-chemical(THMC)coupling during the storage process is investiga-ted.The key factors of various physical processes influencing fault reactivation are discussed,the current re-search challenges and perspectives are also pointed out.Research results indicate that fault reactivation induced by CO2 storage is related with pore pressure perturbation,non-isothermal effect and geochemical reactions;compared with water-injection activities,the characteristics of CO2 injection includes multiphase flow,the Joule-Thomson effect,dissolution heat release,and CO2-brine-rock interaction;The induced fault reactivation is the result of the synergistic effects of these processes,and is controlled by the geo-stress and fault proper-ties,is also influenced by injection strategy and location.Future research efforts should pay more attention on the THMC coupling,the exploration of geological characteristics,and the development of multi-mode CO2 in-jection strategies at both the fundamental theoretical research and practical application.This foundational re-research is essential to understand the mechanisms of near-fault reactivation induced by CO2 injection,and to reliably assess seismic activity.关键词
碳封存/断层活化/孔隙流体压力/非等温效应/地球化学反应Key words
carbon storage/fault reactivation/pore pressure/non-isothermal effect/geochemical reactions分类
资源环境引用本文复制引用
禹海涛,张改,闫晓..CO2封存诱发近断层活化机制研究进展[J].华侨大学学报（自然科学版）,2024,45(2):136-149,14.基金项目
国家重点研发计划项目(政府间国际科技创新合作)(2022YFE0128400) （政府间国际科技创新合作）
国家自然科学基金青年基金资助项目(42307209) （42307209）
