Science and Technology Daily, Harbin, January 31 (Reporter Wu Chunxin and Li Liyun) On the 31st, the reporter learned from the Heilongjiang Ecological Geological Survey Research Institute that the institute’s professor-level senior engineer Ma Yongfa’s research team was responsible for the implementation of the CO2 deep saline aquifer in the Lindian area of the Songliao Basin. The geological storage project has made phased progress: for the first time, the institute conducted a CO2-water mixed dissolution injection test in a deep sandstone saline aquifer, proving that the CO2 geological storage in the deep saline aquifer has good injectability, with a single well injection flow rate exceeding 24.3 cubic meters per hour.
Currently, in the context of the inability to completely abandon fossil energy, carbon capture, utilization and storage technology, as an indispensable part of carbon neutral technology, is considered to be a key means and key to achieving the temperature control goals of the Paris Agreement and my country's carbon neutrality goals. Bottom line protection.
In order to strengthen the supporting and leading role of scientific and technological innovation in carbon reduction and control, the Heilongjiang Provincial Bureau of Geology and Mineral Resources organized a research project on the geological storage potential and pilot injection of CO2 in deep saline aquifers in the Lindian area of the Songliao Basin. Heilongjiang Provincial Ecological Geological Survey Research Institute Responsible for implementation.
After a long period of exploration and research, Ma Yongfa's team constructed a CO2 geological storage suitability evaluation system for the deep sandstone saline aquifer in the Lindian area of the Songliao Basin and carried out evaluation work. For the first time in China, it used geothermal well data to evaluate the deep sandstone in the Lindian area of the Songliao Basin. CO2 geological storage potential of saline aquifer: Its theoretical storage capacity is 47.891 billion tons, and its effective storage capacity is 1.149 billion tons. Its secondary structural units are suitable for CO2 storage.
Previously, Iceland carried out the first basalt CO2-water mixed dissolution injection and storage test. Monitoring shows that mixed dissolution injection can greatly accelerate the reaction time of CO2, water and reservoir rocks to form minerals, ensuring that CO2 is more safely stored underground. Based on this, Mayongfa's team built an on-site injection platform and took the lead in exploring CO2-water mixed dissolution injection tests in deep sandstone saline aquifers.
"As CO2 geological storage technology in deep saline aquifers becomes increasingly mature, deep saline aquifers can be turned into geological reservoirs to store CO2." Mayongfa said that these geological reservoirs have stable geological characteristics and storage capabilities and can safely store CO2. Long-term storage of CO2, reducing emissions and environmental pollution.