化工进展 ›› 2015, Vol. 34 ›› Issue (08): 3118-3123.DOI: 10.16085/j.issn.1000-6613.2015.08.034

• 精细化工 • 上一篇    下一篇

无机盐阴阳离子对稠油水包油型乳状液稳定性的影响

孙娜娜1, 敬加强1,2, 丁晔3, 臧欣欣4, 邹亮5   

  1. 1 西南石油大学油气藏地质及开发工程国家重点实验室, 四川 成都 610500;
    2 油气消防四川省重点实验室, 四川 成都 611731;
    3 新疆油田公司凤城油田作业区, 新疆 克拉玛依 834000;
    4 青海油田采油二厂开发室, 青海 海西 816400;
    5 中海石油有限公司天津分公司渤西作业公司, 天津 300452
  • 收稿日期:2015-03-02 修回日期:2015-03-26 出版日期:2015-08-05 发布日期:2015-08-05
  • 通讯作者: 孙娜娜(1987—),女,博士研究生。E-mail bingyuxuan6666@126.com。
  • 作者简介:孙娜娜(1987—),女,博士研究生。E-mail bingyuxuan6666@126.com。
  • 基金资助:
    西南石油大学研究生创新基金暨“挑战杯”培育项目(CXJJ 2015030)。

Effects of cationic/anionic electrolytes on the stability of heavy oil-in-water emulsions

SUN Nana1, JING Jiaqiang1,2, DING Ye3, ZANG Xinxin4, ZOU Liang5   

  1. 1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, Sichuan, China;
    2 Oil and Gas Fire Protection Key Laboratory of Sichuan Province, Chengdu 611731, Sichuan, China;
    3 Fengcheng Zero of Xinjiang Oilfield, Karamay 834000, Xinjiang, China;
    4 The Second Oil Extraction Plant of Qinghai Oilfield, Haixi 816400, Qinghai, China;
    5 Tianjin Branch of China National Offshore Oil Corporation, Tianjin 300452, China
  • Received:2015-03-02 Revised:2015-03-26 Online:2015-08-05 Published:2015-08-05

摘要: 考察了两性/非离子复配表面活性剂浓度、无机/有机复配碱浓度、不同价态正负离子对稠油水包油型乳状液稳定性的影响规律。实验结果表明:随着复配表面活性剂浓度的增加,乳状液的分水率先急剧降低后缓慢下降;复配碱对乳状液的稳定性存在最优浓度;无机盐对乳状液的稳定性具有双重作用,低浓度盐提高乳状液的稳定性,高浓度盐降低乳状液的稳定性;一价阳离子对乳状液的稳定性影响顺序为KCl> NaCl> LiCl;二价阳离子对乳状液稳定性的影响程度为MgCl2> CaCl2;一价阴离子对分水率的影响顺序为NaCl> NaBr> NaI;高价阴离子对乳状液稳定性的影响程度为Na2SO4> NaCl> Na3PO4

关键词: 两性表面活性剂, 有机碱, 单价盐, 高价盐, 乳状液稳定性

Abstract: The effects of the concentrations of amphoteric/nonionic surfactant, inorganic/organic alkali and anionic/cationic electrolyte on the stability of heavy oil-in-water emulsions were researched. The experimental results show that the water separation rates first sharply decrease with the increase of surfactant concentrations, and then reduce gradually till the minimum value. The compositional alkali has an optimal concentration. Inorganic salts show a twofold effect on the stability of emulsions, increasing within the low salt concentration and decreasing above the high concentration of salt. The magnitude of the effects of univalent cations on water separation rates is as follows:KCl> NaCl> LiCl. And the influence of MgCl2 on the stability of emulsions is greater than that of CaCl2. The magnitude of the effects of univalent anions on water separation rates is as follows: NaCl> NaBr> NaI, and that of polyvalent is Na2SO4> NaCl> Na3PO4.

Key words: amphoteric surfactant, organic alkali, univalent salt, polyvalent salt, emulsions stability

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