Mechanism research on starting residual oil migration in ASP flooding with different Alkali concentration

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Xia, Huifen^1 ; Pan, Junliang^1 ; Niu, Lijuan^2 ; Xu, Tianhan^1

Key Laboratory of Enhanced Oil and Gas Recovery of Educational Ministry, Northeast Petroleum University, Daqing, Heilongjiang, 163318, China^1

Well Testing and Perforating Company of Daqing Oilfield Co., Daqing, Heilongjiang

163412, China^2

关键词: Alkali concentrations;    ASP flooding;    Mechanism research;    Microscopic simulation;    Oil droplets;    Oil recoveries;    Oil-displacement efficiency;    Visual model;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/2/022043/pdf
DOI  :  10.1088/1755-1315/121/2/022043

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The results illustrate that under the condition of the same viscosity of ASP system, oil displacement efficiency is different while the ASP system with different alkali concentration has the same order of magnitude as the interfacial tension of oil. In this paper, the microscopic simulation visual model is used to study the mechanism of starting migration of residual oil by doing ASP flooding experiments with different alkali concentration. The results indicate that the migration of residual oil is different from that in the ASP systems with different alkali concentration. ASP system with high alkali concentration can start the migration by means of emulsifying residual oil into oil droplets and oil threads, on this account, increasing the alkali concentration can make the recovery degree of ASP system higher, which will finally be beneficial to the oil recovery.