Research Progress on CO2 Corrosion Resistance of Cement in CCUS Environment
摘要
Carbon dioxide capture, utilization and storage are the most promising technologies for emission reduction, and also an important means to achieve carbon neutrality. In the actual process of downhole CO2 injection, CO2 corrosion leads to the destruction of cement sheath, resulting in the failure of cement sheath seal, which will endanger the subsequent storage and utilization. In this paper, the research status of CO2 anti-corrosion measures in CCUS cementing process is reviewed, and various anti-corrosion measures are classified, and their mechanism and problems are expounded. At the same time, the development trend and application prospect of cement anti-CO2 corrosion in CCUS operation are prospected.