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日用化学工业(中英文) ›› 2025, Vol. 55 ›› Issue (8): 961-968.doi: 10.3969/j.issn.2097-2806.2025.08.002

• 特邀专稿 • 上一篇    下一篇

低界面张力驱油表面活性剂的界面扩张流变研究

楚艳苹1,2,高峰1,2,张伟华3,张磊4,张路4,*()   

  1. 1.大庆油田有限责任公司 勘探开发研究院,黑龙江 大庆 163712
    2.多资源协同陆相页岩油绿色开采全国重点实验室,黑龙江 大庆 163712
    3.大庆油田有限责任公司 第二采油厂,黑龙江 大庆 163414
    4.中国科学院理化技术研究所,北京 100190
  • 收稿日期:2025-06-06 修回日期:2025-07-11 出版日期:2025-08-22 发布日期:2025-08-28
  • 基金资助:
    国家重点研发计划项目(2019YFA0708700)

Study on interfacial dilational rheology of surfactant flooding with low-interfacial-tension surfactants

Yanping Chu1,2,Feng Gao1,2,Weihua Zhang3,Lei Zhang4,Lu Zhang4,*()   

  1. 1. Exploration and Development Research Institute, Daqing Oilfield Co., Ltd., Daqing, Heilongjiang 163712, China
    2. State Key Laboratory of Continental Shale Oil, Daqing, Heilongjiang 163712, China
    3. No.2 Oil Production Plant, Daqing Oilfield Co., Ltd., Daqing, Heilongjiang 163414, China
    4. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2025-06-06 Revised:2025-07-11 Online:2025-08-22 Published:2025-08-28
  • Contact: *E-mail: luyiqiao@mail.ipc.ac.cn.

摘要: 采用旋转滴法研究了阴离子表面活性剂重烷基苯磺酸盐(HABS)和石油磺酸盐(PS)的界面扩张流变特性。考察了振荡频率、表面活性剂浓度、油相、界面张力对界面模量的影响,比较了HABS和PS的界面膜强度和界面活性的差异。结果表明,HABS的亲水亲油平衡能力比PS强,能将癸烷-水界面张力和原油-水界面张力降低至0.01 mN/m数量级。HABS和PS分子间均以静电斥力为主,扩散-交换过程主导,界面膜黏性较大。在癸烷-水界面,分子尺寸较小的HABS扩散-交换更快,界面膜的黏性比PS高,扩张模量在高浓度时降低得更明显;原油中活性组分在原油-水界面上混合吸附,造成HABS和PS界面膜的黏弹特性相似。HABS与原油组分间存在协同效应,在将界面张力降低至0.01 mN/m数量级的同时,还能维持一定的界面膜强度,在提高原油采收率方面有较大潜力。

关键词: 旋转滴法, 界面张力, 界面扩张模量, 重烷基苯磺酸盐, 石油磺酸盐

Abstract:

The interfacial dilational rheological properties of anionic surfactants heavy alkylbenzene sulfonate (HABS) and petroleum sulfonate (PS) were studied by spinning drop method. The effects of oscillation frequency, surfactant concentration, oil phase and interfacial tension on the interfacial modulus were investigated. The differences of interfacial film strength and interfacial activity between HABS and PS were compared. The results showed that the hydrophilic-lipophilic balance of HABS was better than that of PS, which could reduce the interfacial tension to the magnitude order of 0.01 mN/m against decane and crude oil. Both HABS and PS molecules were dominated by electrostatic repulsion, in which the diffusion-exchange process was dominant, and the viscosity of interfacial film was high. At the decane-water interface, compared with PS, the diffusion-exchange of HABS who had smaller molecular size was faster, the viscosity of interface film was higher, and the dilational modulus decreased more significantly at high concentration. The surface-active components in crude oil adsorbed on the crude oil-water interface, resulting in similar viscoelastic properties of interfacial films of HABS and PS. There was synergistic effect between HABS and crude oil components. As a result, HABS could not only reduce the interfacial tension to the magnitude order of 0.01 mN/m, but also maintain certain interfacial film strength, which showed great potential in improving crude oil recovery.

Key words: spinning drop method, interfacial tension, interfacial dilational modulus, heavy alkylbenzene sulfonate, petroleum sulfonate

中图分类号: 

  • TQ423