Application of X-ray CT investigation of CO2-brine flow in porous media

作者：Jiang, Lanlan; Liu, Yu^*; Song, Yongchen; Yang, Mingjun; Xue, Ziqiu; Zhao, Yuechao; Zhao, Jiafei; Zhang, Yi; Suekane, Tetsuya; Shen, Zijian

来源：Experiments in Fluids, 2015, 56(5): 91.

DOI：10.1007/s00348-015-1959-x

• COMPUTED-TOMOGRAPHY
• MULTIPHASE FLOW
• 2-PHASE FLOW
• CO2
• NETWORK
• HETEROGENEITY
• BRINE
• ROCKS
• WET

A clear understanding of two-phase flows in porous media is important for investigating CO2 geological storage. In this study, we conducted an experiment of CO2/brine flow process in porous media under sequestration conditions using X-ray CT technique. The flow properties of relative permeability, porosity heterogeneity, and CO2 saturation were observed in this experiment. The porous media was packed with glass beads having a diameter of 0.2 mm. The porosity distribution along the flow direction is heterogeneous owing to the diameter and shape of glass beads along the flow direction. There is a relationship between CO2 saturation and porosity distribution, which changes with different flow rates and fractional flows. The heterogeneity of the porous media influences the distribution of CO2; moreover, gravity, fractional flows, and flow rates influence CO2 distribution and saturation. The relative permeability curve was constructed using the steady-state method. The results agreed well with the relative permeability curve simulated using pore-network model.

• 出版日期2015-5
• 单位大连理工大学