中国石油大学学报（自然科学版）2017，Vol.41Issue(5)：110-116,7.DOI:10.3969/j.issn.1673-5005.2017.05.013
CO2乳液的界面特性对其渗流特征的影响
Influence of CO2 emulsion interfacial characterization on porous flow
摘要
Abstract
In the process of oil displacement, CO2 emulsion can effectively control the mobility of CO2 which significantly im-proves the CO2 flooding effect and EOR. The AOT was selected as surfactants for CO2 emulsion. And the interfacial property of AOT aqueous solution and CO2 was characterized through TRACKER-H interfacial rheometer at different temperatures and pressures. Then the CO2 emulsion plugging and profile control shunt effect were evaluated through the core plugging experi-ment under different temperatures and pressures. It is found that with the increase of pressure, the interfacial tension of CO2 emulsion decreases, while the interfacial viscoelasticity increases. And with the increase of temperature, the interfacial ten-sion of CO2 emulsion increases, but the interfacial viscoelasticity decreases. It is also concluded that the high temperature is unfavorable to the emulsion plugging, while the high pressure is favorable to the emulsion plugging, which corresponds to the interfacial viscoelasticity, indicating CO2 emulsion plugging effect is related to its interfacial viscoelasticity. The results show that the temperature and pressure can affect the porous flow of CO2 emulsion via influencing its interfacial properties. Higher the strength of the CO2 emulsion, lower interfacial tension and better viscoelasticity can lead to signficant shunt effect.关键词
CO2乳液/界面特性/岩心封堵/调剖分流Key words
CO2 emulsion/interfacial characterization/core plugging/profile shunt分类
能源科技引用本文复制引用
李兆敏,刘己全,李松岩,王鹏,卢培华,陈庆国..CO2乳液的界面特性对其渗流特征的影响[J].中国石油大学学报（自然科学版）,2017,41(5):110-116,7.基金项目
国家自然科学基金项目(51304229) （51304229）
教育部博士点基金项目(20120133110008) （20120133110008）
中央高校基本科研业务费专项(14CX02043A, 14CX02185A) （14CX02043A, 14CX02185A）
