物理化学学报 >> 2014, Vol. 30 >> Issue (7): 1297-1302.doi: 10.3866/PKU.WHXB201405094

软物质 上一篇    下一篇

阴阳离子表面活性剂混合体系对原油的乳化及增粘行为

曹绪龙1, 赵海娜2, 马骋2, 马宝东1, 张继超1, 严兰1, 黄建滨2   

  1. 1. 中国石化胜利油田分公司地质科学研究院, 山东东营 257015;
    2. 北京大学化学与分子工程学院, 北京 100871
  • 收稿日期:2014-03-07 修回日期:2014-05-04 发布日期:2014-06-30
  • 通讯作者: 黄建滨 E-mail:jbhuang@pku.edu.cn
  • 基金资助:

    国家科技重大专项(2011ZX05011-004)资助项目

Behavior of Emulsification and Thickening of Crude Oil in Mixed Cationic and Anionic Surfactant Systems

CAO Xu-Long1, ZHAO Hai-Na2, MA Cheng2, MA Bao-Dong1, ZHANG Ji-Chao1, YAN Lan1, HUANG Jian-Bin2   

  1. 1. Geological and Scientific Research Institute of Shengli Oilfield Co. Ltd., SINOPEC, Dongying 257015, Shandong Province, P. R. China;
    2. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
  • Received:2014-03-07 Revised:2014-05-04 Published:2014-06-30
  • Contact: HUANG Jian-Bin E-mail:jbhuang@pku.edu.cn
  • Supported by:

    The project was supported by the Important National Science & Technology Major Special Projects, China (2011ZX05011-004).

摘要:

利用阴阳离子表面活性剂复配技术,实现了高含水量原油体系的乳化及增粘. 通过调整表面活性剂分子结构,解决了阴阳离子表面活性剂复配体系在油田模拟水中的溶解度问题. 确定了相关体系高含水量油包水(W/O)乳状液的表面活性剂浓度,研究了可以产生高含水量油包水乳状液的油水混合体积比范围,并研究了温度、pH值、油水混合比例和离子强度对乳化及增粘作用的影响. 获得了一系列具有优良乳化效果和乳状液稳定性的体系,其中部分体系粘度可增大80倍. 这对于三次采油提高采收率有重要意义.

关键词: 阴阳离子表面活性剂, 乳化, 油包水乳状液, 增粘性质

Abstract:

We report the emulsification and thickening of crude oil using mixtures of cationic and anionic surfactants, which have high water content. The solubility of the mixed surfactants in simulated oil field water was improved by adjusting the surfactant molecular structure. The suitable concentration and mixing ratio ranges of various mixed systems were determined, and water in oil (W/O) lactescence with high water content was obtained. In addition, we studied the effects of temperature, pH value, ionic strength, and oil/water volume ratio on the emulsification and thickening processes. A series of mixed systems with good emulsification and thickening ability were determined and optimized. Notably, some of the systems increased the viscosity of the emulsion by up to 80 times. This has significance for the improvement of oil recovery.

Key words: Cationic and anionic surfactant, Emulsification, Water-in-oil emulsion, Thickening property

MSC2000: 

  • O648