物理化学学报 >> 2000, Vol. 16 >> Issue (08): 724-728.doi: 10.3866/PKU.WHXB20000810

研究论文 上一篇    下一篇

石油磺酸盐体系中相微乳液研究

陈咏梅, 王涵慧, 俞稼镛   

  1. 中国科学院感光化学研究所,北京 100101
  • 收稿日期:1999-11-30 修回日期:2000-03-20 发布日期:2000-08-15
  • 通讯作者: 陈咏梅

Study of Middle Phase Microemulsion Formed by Petroleum Sulfonate

Chen Yong-Mei, Wang Han-Hui, Yu Jia-Yong   

  1. Institute of Photographic Chemistry,The Chinese Academy of Sciences,Beijing 100101
  • Received:1999-11-30 Revised:2000-03-20 Published:2000-08-15
  • Contact: Chen Yong-Mei

摘要:

宽分子量分布的石油磺酸盐(SPS)在低浓度(0.4%)时有正丁醇、正构烷烃(正庚烷、正辛烷、正壬烷、正癸烷、正十二烷)、盐存在的情况下能形成中相微乳液.研究了盐浓度、烷烃种类、醇浓度对该体系中相微乳液的形成及特性影响,得到中相微乳液的特性参数:最佳含盐量S、增溶参数σ、盐宽△S、界面张力γ等,并从理论上进行了探讨宽分子量分布的石油磺酸盐(SPS)在低浓度(0.4%)时有正丁醇、正构烷烃(正庚烷、正辛烷、正壬烷、正癸烷、正十二烷)、盐存在的情况下能形成中相微乳液.研究了盐浓度、烷烃种类、醇浓度对该体系中相微乳液的形成及特性影响,得到中相微乳液的特性参数:最佳含盐量S、增溶参数σ、盐宽△S、界面张力γ等,并从理论上进行了探讨.采用模拟驱油装置测定了体系的驱油效率,对优化驱油体系设计具有重要意义..采用模拟驱油装置测定了体系的驱油效率,对优化驱油体系设计具有重要意义.

关键词: 石油磺酸盐, 中相微乳液, 界面张力, 驱油效率

Abstract:

At low concentration (0.4%), in the present of n-butanol, alkanes and brine, petroleum sulfonate (SPS) which has wide range of molecular weight, can form middle phase microemulsion. Using salinity, n-butanol scanning and interfacial tension, we investigated the influence of salinity, n-butanol and kind of alkane on the formation and characteristics of the middle Phase microemulsion of 0.4% SPS/ n-butanol/NaCl/alkane system at V_oil/ V_water=1: 4. Using mimic oil recovery, we investigated the influence of salinity on oil recovery efficiency. It showed in this study that the maximum oil recovery efficiency was connected with optimal salinity and optimal interfacial tension. The results are of particular importance to design slug formation.

Key words: Petroleum sulfonate, Microemlsion, Interfacial tension, Oil recovery efficiency