Review on Research Progress of Carbon Dioxide Geological Sequestration Technology
The position of fossil fuels as the most important energy for human beings is difficult to change in the short term,but the proposal of the "dual carbon" goal has brought new challenges and opportunities for China's industrial structure upgrading and energy security.Carbon emission reduction technology represented by CO2 underground storage is an important way to achieve the " dual carbon" strategy.Carbon dioxide geological sequestration technology (CCS) is regarded as a direct and effective means of emission reduction.This technology is to capture the CO2 originally discharged into the atmosphere and inject it into the closed underground reservoir after treatment,to reduce the emission of CO2 into the atmosphere and slow down the atmospheric pollution and greenhouse effect.At present,CCS technology has been widely concerned by researchers domestic and overseas.The situation of CO2 emission reduction in China is very serious,thus,the study of CO2 geological sequestration is particularly urgent.To carry out further research,this paper reviews the global research status from four aspects:saline aquifer storage,abandoned oil and gas reservoir storage,deep unexploitable coal seam storage,and basalt storage.In addition,the deficiencies in the current research and the problems that need further research are also presented.
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