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日用化学工业 ›› 2019, Vol. 49 ›› Issue (9): 555-560.doi: 10.3969/j.issn.1001-1803.2019.09.001

• 基础研究 •    下一篇

芥酸酰胺丙基叔胺和苯甲酸压裂液体系构筑

康万利,李欣欣,赵一潞,王鹏祥,侯小雨,杨红斌   

  1. 中国石油大学(华东) 石油工程学院 山东省油田化学重点实验室,山东 青岛 266580
  • 收稿日期:2019-01-29 修回日期:2019-08-28 出版日期:2019-09-22 发布日期:2019-09-19
  • 作者简介:康万利(1963-),男,吉林人,泰山学者特聘教授,博士生导师,电话:13589332193,E-mail: kangwanli@126.com
  • 基金资助:
    国家自然科学基金资助项目(51774309);山东省自然科学基金资助项目(ZR2017LEE001);中央高校基本科研基金资助项目(18CX02166A)

Construction of N-erucamido-N, N-dimethylamine and benzoic acid fracturing fluid system

KANG Wan-li,LI Xin-xin,ZHAO Yi-lu,WANG Peng-xiang,HOU Xiao-yu,YANG Hong-bin   

  1. Shandong Key Laboratory of Oilfield Chemistry, School of Petroleum Engineering, China University of Petroleum(East China),Qingdao, Shandong 266580, China
  • Received:2019-01-29 Revised:2019-08-28 Online:2019-09-22 Published:2019-09-19

摘要:

用芥酸酰胺丙基叔胺(EA)和苯甲酸(BA)构筑EABA体系,利用流变仪研究了pH值及EABA浓度对其流变行为影响,通过冷冻透射电镜观测微观聚集体的形貌,用该体系制备清洁压裂液并对其性能进行评价。结果表明,EABA体系的较佳黏弹性pH值为6.17,此时体系中形成“拟”双子表面活性剂结构并形成蠕虫状胶束,且随浓度增加黏弹性增大,50 mmol/L以后增幅变缓。在90 ℃、170 s -1下剪切2 h,50 mmol/L的EABA清洁压裂液黏度稳定在35 mPa·s,且剪切恢复性及携砂性能良好,10 min内可破胶,破胶液黏度为2.1 mPa·s,满足清洁压裂液要求。

关键词: 阳离子表面活性剂, “拟”双子表面活性剂;, 清洁压裂液, 压裂液性能

Abstract:

The N-erucamido-N, N-dimethylamine(EA) and benzoic acid(BA) were used to construct the EABA system. The effects of pH value and EABA concentration on its rheological behavior were studied by rheometer. The morphology of micro-aggregates was observed by Cryo-TEM. The system was used to prepare a clean fracturing fluid and its performance was evaluated. Results show that the optimum viscoelastic pH of the EABA system is 6.17. At this time, the structure of “pseudo” gemini surfactant is formed in the system with the formation of worm-like micelles. The viscoelasticity increases with the increase of concentration and the increase becomes slower after reaching 50 mmol/L. After shearing at 90 ℃ and 170 s -1 for 2 h, the viscosity of 50 mmol/L EABA clean fracturing fluid is stable at 35 mPa·s, and the shear recovery and proppant-carrying performance are good. The breaking fluid viscosity is 2.1 mPa·s within 10 min, which meets the requirements of clean fracturing fluid.

Key words: cationic surfactant, “pseudo” gemini surfactant;, clean fracturing fluid, fracturing fluid properties

中图分类号: 

  • TQ423