Experimental Study of Foamy Oil Solution Gas Drive Process in an Etched Glass Micromodel

2018 International Conference on Advanced Technologies in Energy, Environmental and Electrical Engineering

能源学;生态环境科学;无线电电子学

Zhang, Yanyu^1 ; Zhao, Hao^1 ; Sun, Xiaofei^1 ; Zhang, Shuo^1 ; Gai, Zhiyong^2 ; Liu, Yunlong^1

School of Petroleum Engineering, China University of Petroleum (East China), Shandong Province, Qingdao

266580, China^1

Shandong Hi-Speed Materials Group Corporation, Shandong Province, Jinan

250000, China^2

关键词: Coalescence rate;    Flow charac-teristics;    Formation condition;    Glass micromodel;    Heavy oil reservoirs;    Rock surfaces;    Solution gas drive;    Systematic research;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/223/1/012035/pdf
DOI  :  10.1088/1755-1315/223/1/012035

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Foamy oil phenomenon is of great significance for the exploitation of some heavy oil reservoirs. Many researchers have conducted a lot of research on foamy oil, but there is still no systematic research on why foamy oil phenomenon only appears in some special heavy oil reservoirs. Therefore, it is of great significance to study the formation of foamy oil in depth. This paper simulates the process of three kinds of heavy oil solution gas drive processes with different types of heavy oil under the formation conditions in an etched glass micromodel, and the flow characteristics of gas bubbles in the micromodel were observed. The results show that the location of gas bubbles nucleation was mainly distributed in the main channel and the rock surface of the micromodel. Compared with gas bubbles in the foamy oil, the dispersed gas bubbles in the conventional heavy oil had a shorter existence time and no obvious foamy oil phenomenon, the size of gas bubbles in the conventional heavy oil was larger, and the migration, growth and coalescence rate were faster.