Experimental Study on Oil Displacement Mechanism

3rd International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

Pi, Yanfu^1 ; Shao, Hongzhi^1 ; Pi, Yanming^2 ; Liu, Li^1

Northeast Petroleum University, Daqing

163318, China^1

EnerTech-Drilling and Production Co., CNOOC EnerTech-Safety and Environmental Protection Co., Tanggu Tianjin

300457, China^2

关键词: Binary combinations;    Comparative studies;    Displacement experiments;    Enhance oil recoveries;    Heavy oil reservoirs;    High permeability;    Medium permeability;    Oil displacement mechanisms;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/113/1/012103/pdf
DOI  :  10.1088/1755-1315/113/1/012103

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this work, the objective is enhancing oil recovery in offshore heavy oil after polymer flooding. The heterogeneous physical model is especially designed for oil fields with heavy oil. The comparative study of the two displacement experiments was carried out, and the experimental data was compared and analysed. The comparison between scheme one and scheme two was analysed from the production curve. The patterns of cores are analysed and compared with each other. It was found that the oil in the high permeability layer and medium permeability layer had been widely removed in the stage of binary combination flooding. There was a high degree of use in the low permeability layer. The recovery ratio is 66.29%. After polymer flooding, the addition of binary combination flooding in the heavy oil reservoir can greatly enhance oil recovery.