The influence of CO2 leaking on environmental monitoring in the process of CO2 geological sealing

Abstract

Carbon dioxide capture and storage (CCS) is one of the most promising emission reduction measures. Based on the CCS project in Shen Hua Group Corporation, the eddy correlation monitoring system was used to monitor the CO2 flux in the sealed area. Combing with local wind direction, the flux change in the sealed area was analyzed. A simulation study on the CO2 leaking rule is carried out by ANSYS. CO2 distribution law in the sealed area in different leaking rates was predicted. The results show that the flux anomaly was caused by the CO2 leaking from surge tank in the sealed area. The interference on gas leaking from the surge tank should be considered in the monitoring process of the CCS project.