Interfacial tension of CO2 and crude oils under high pressure and temperature
Interfacial tension of CO2 and crude oils under high pressure and temperature
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高压高温下CO2与原油的界面张力
DOI：
10.1016/j.colsurfa.2015.05.058
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发表时间：
2015-10-05
影响因子：
5.2
通讯作者：
Dong, Zhaoxia
中科院分区：
文献类型：
--
作者：
Yang, Zihao;Liu, Xiaolei;Dong, Zhaoxia
分别用悬滴法和轴对称液滴形状分析法(ADSA)测定了45 Mpa和412.15K高温高压下CO2与油藏原油的界面张力数据。结果表明，CO2与原油之间的界面张力最初随压力的升高而迅速降低，随后由于原油中的重质组分的存在，界面张力随压力的升高而下降的速度较慢。对于CO2+原油体系，没有得到超低或零的界面张力。为了进行比较，还测定了318.15K时CO2与十六烷的界面张力。结果表明，对于CO_2+十六烷体系，存在界面张力消失和相容现象。(C)2015爱思唯尔B.V.保留所有权利。
The interfacial tension data between CO2 and reservoir crude oils were measured by the pendant-drop method and the axisymmetric drop shape analysis (ADSA) under high pressure and temperature up to 45MPa and 412.15K respectively. The results show that at beginning, the interfacial tension between CO2 and crude oils decreases rapidly with pressure being increased, and then the interfacial tension decreases quite slowly with increasing of pressure because of heavy components in the crude oils. There is no ultra-low or zero interfacial tension obtained for CO2 + crude oil systems. For comparison, the interfacial tensions between CO2 and hexadecane at 318.15K were also determined. The results show that for CO2 + hexadecane system, the vanishing interfacial tension and miscible phenomenon are observed. (C) 2015 Elsevier B.V. All rights reserved.