Monitoring the Safety of CO2 Sequestration in Jingbian Field, China

Abstract The first CCS-EOR (Enhanced Oil Recovery) pilot project in Shaanxi Province of China is being conducted. Although there are still many technical obstacles need to be solved, the major concern with this CCS (Carbon Capture and Sequestration) project is the risks of CO 2 leaking from the subsurface storage site. While the industry worries about the efficiency of CO 2 -EOR in such low porosity and ultra- low permeability reservoir. In the present work, we assess the potential risks as well as reservoir properties in CO 2 geological storage site in Jingbian Field, North of Shaanxi. We design a comprehensive monitoring system, which covers geophysical, geological and surface environmental monitoring, in order to detect plume behaviour and leakage of CO 2 during different stages of CO 2 sequestration. The study of monitoring data and CO 2 -EOR operation in Jingbian CCS pilot project will increase our understanding of underground process during CO 2 injection and after site closure in Ordos Basin.