Research progress on the CO2 mineralization mechanism and evolution of the physical properties of basalt
With the increase of global warming and China's"double carbon"goal,there is urgent need to reduce CO2 emissions.As one of the most promising CO2 geological storage technologies,basalt mineralization storage has attracted considerable research attention.In order to understand the latest progress of this technology and promote the development of this field in China,we have carried out a status quo study of the geological characteristics of basalt,basalt-CO2 mineralization mechanism,and the physical properties of basalt reservoirs,and have made a preliminary estimation of sequestration potential in some basalt-distributed areas in China.It is pointed out in this study that the original mineral components of basaltic rocks,the pore-permeability characteristics of the endowment,and other geological properties each have an important influence on the mineralization and storage process.However,the evolutionary characteristics of this process and the physical properties of basalt reservoirs are still unclear,and the theoretical models,tools,and techniques used to characterize the mineralization and storage mechanism,including the multiscale fluid transport law after CO2 injection,need to be further improved.The results of this study reveal that basalts in China are extensively distributed,with Emeishan basalts particularly prevalent.These basalts exhibit favorable source-reservoir configurations and significant volumes,making them highly promising for regional CO2 storage.
carbon dioxidebasaltmechanism of mineralization storagereservoir evolutionpotential estimation
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