Research on Model and Related Parameters of Supercritical CO2 Injection into Depleted Reservoir

8th International Conference on Environmental Science and Technology

生态环境科学

Ma, Pinghua^1 ; He, Jun^1

College of Vehicle and Energy, Yanshan University, Qinhuangdao, Hebei

066004, China^1

关键词: Co2 geological storages;    Displacement process;    Enhanced oil recovery;    Heterogeneous characteristic;    Logarithmic normal distribution;    Porosity distributions;    Saturation distribution;    Two phase flow model;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/78/1/012006/pdf
DOI  :  10.1088/1755-1315/78/1/012006

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

On the basis of the research on CO2geological storage and enhanced oil recovery(EOR) technology, a random porosity distribution model which conforms to logarithmic normal distribution was adopted in order to describe the heterogeneous characteristics of pore structure. On this basis, the two-phase flow model of CO2-formation water was established to describe the displacement process. Through the simulation of CO2injection into depleted reservoir, it confirmed that injection point pressure was associated with the temperature and depth of the formation except heterogeneity. But the saturation distribution was greatly influenced by formation heterogeneity and depth. Thus, the space utilization of the injection layer reduced gradually with the depth increasing. The related research is important for CO2storage, migration and evolution in depleted reservoir.