CO_2 Storage Capacity Estimation in Geological Sequestration:Issus and Research Progress

CO2 geological sequestration is one of the most promising methods for reducing anthropogenic CO2 emissions into the atmosphere.Therefore an assessment should be performed to determine whether there is sufficient CO2 storage capacity in a country,a region or a specific storage unit.Current study results indicate that CO2 storage estimation is not a simple and direct process.This paper introduced the method of CO2 storage capacity estimation in oil and gas reservoirs,deep saline aquifers,and coal seams presented by the CSFL Task Force.The main factors which may affect the estimation of CO2 geological storage capacity were presented,and some suggestions about the national collaborative program on the research of CO2 geological sequestration technology in China were put forward,which will be useful to the reduction of CO2 emissions in China.