Climate Change

Biography

Biography: Dou Hongen

Abstract

The paper presents the research achievements of CO2 Capture, Utilization, and Sequestration in China. Criteria of CO2 capture and geological sequestration (CCGS), CO2 capture and utilization sequestration (CCUS) both are established in China, including screening criteria of the sites of CO2 storage and storage security and risk assessment. Also, in order to study CO2 storage capacity at different reservoirs and regions in China, the paper modifys existing evaluation methods, and shows clearly what problems existing in the previous methodologies. China’s CO2 storage potential in saline aquifers, depleted oil and gas reservoirs, deep brine-saturated formations and CO2-flooding enhanced-oil-recovery(CO2-EOR) and enhanced coalbed methane recovery(ECBM) are evaluated by means of the modified method. Various trapping mechanisms of CO2 storage are discussed in the paper. In addition, CCGS and CCUS technologies have been used to CCGS and CCUS (CO2-EOR) projects, CO2 geological storage project of Shenhua group in erdos basin, and CO2-EOR project of Jilin, Daqing, Shengli and Yanchang, both categories are introduced respectively. Final, prospect on China’s CCUS will be sighted, CO2 capture from coal-chemical plants where CO2 has high purity and its price is relative cheap, thus offering a good opportunity for implementing CO2-EOR. It is practice verified that CO2-EOR as a practical CCUS technology is a good practical and economical way for reducing CO2 emissions and enhancing oil recovery. The authors point out strategy of the CCUS technology R&D, innovation and low cost CO2 use technologies to deal with the present low oil crude price.