QU Changqing, LIN Qianguo. Atmospheric diffusion study of surface leakage from CO2 enhanced oil recovery with carbon capture and storage based on flux monitoring-CFD simulation[J]. Petroleum Reservoir Evaluation and Development, 2024, 14(6): 885-891.
QU Changqing, LIN Qianguo. Atmospheric diffusion study of surface leakage from CO2 enhanced oil recovery with carbon capture and storage based on flux monitoring-CFD simulation[J]. Petroleum Reservoir Evaluation and Development, 2024, 14(6): 885-891. DOI: 10.13809/j.cnki.cn32-1825/te.2024.06.009.
enhanced oil recovery(EOR) with carbon capture and storage(CCS) projects offer dual benefits of increasing oil recovery and CO
2
storage
making it one of the most economically viable carbon sequestration methods nowadays. However
EOR-CCS projects typically involve multiple well sites
and the high risk of CO
2
leakage from wellbores poses significant safety and environmental challenges over large areas. To address the limitations of previous atmospheric diffusion studies based on point-source leakage at well sites
a new method for studying surface CO
2
leakage and atmospheric diffusion in EOR-CC
S projects based on area-source flux monitoring at well sites was developed. A case study of an oilfield in East China
based on scenario analysis
demonstrated that CO
2
leakage flux monitoring using the eddy covariance method could provide accurate data on area-source leakage fluxes for entire well sites
enabling large-scale computational fluid dynamics(CFD) simulations. Multi-well-site CFD diffusion simulations effectively captured the impact of complex regional topography and multiple well sites on CO
2
leakage
supporting regional safety and environmental risk management for well site leakage.