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

论文类型：

期刊论文

第一作者：

Jiang, Lanlan

通讯作者：

Liu, Y (reprint author), Dalian Univ Technol, Key Lab Ocean Energy Utilizat & Energy Conservat, Minist Educ, Dalian 116024, Peoples R China.

合写作者：

Zhao, Jiafei,Zhang, Yi,Suekane, Tetsuya,Liu, Yu,Song, Yongchen,Yang, Mingjun,Xue, Ziqiu,Zhao, Yuechao,Shen, Zijian

发表时间：

2015-05-01

发表刊物：

EXPERIMENTS IN FLUIDS

收录刊物：

Scopus、EI、SCIE

文献类型：

J

卷号：

56

期号：

5

ISSN号：

0723-4864

摘要：

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.