Variation of interfacial tension of the steam-foam drive in heavy oil reservoirs

2018 International Conference of Green Buildings and Environmental Management

土木建筑工程;生态环境科学

Huang, X.H.^1 ; Long, Y.Q.^2 ; Wang, Y.Z.^1 ; Song, F.Q.^1

School of Petrochemical and Energetic Engineering, Zhejiang Ocean University, No.1, Haida South Road, Zhoushan, Zhejiang

316022, China^1

Institute of Innovation and Application, Zhejiang Ocean University, No.1, Haida South Road, Zhoushan, Zhejiang

316022, China^2

关键词: Displacement efficiency;    Dynamic interfacial tension;    Heavy oil reservoirs;    High temperature and high pressure;    Mass fraction;    Reservoir pressures;    Reservoir temperatures;    Saturated steam;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/186/4/012011/pdf
DOI  :  10.1088/1755-1315/186/4/012011

来源: IOP

【 摘 要 】

The reservoir could be divided into three zones: steam zone with saturated steam temperature, condensate zone and reservoir temperature zone. Experiments were conducted to investigate influence of mass fraction of foaming agent and temperature on interfacial tension at reservoir pressure and temperature, by means of high temperature and high pressure interfacial tension instrument. The results showed that increasing mass fraction of foaming agent and temperature would result in decreasing minimum dynamic interfacial tension and steady interfacial tension. As temperature increased, it would take less time for the system to reach minimum dynamic interfacial tension. In steam zone and condensate zone, the interfacial tensions between water and heavy oil all keep magnitude of 10-2mN/m, but it keeps magnitude of 10-1mN/m in reservoir temperature zone. So the foaming agent has better displacement efficiency for heavy oil in steam zone and condensate zone.