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| 新型耐盐蠕虫状胶束体系的性能和驱油效果研究 |
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范海明1, 张宏涛1, 郁登朗2, 李爱山2, 王 昭3, 赵 健1, 康万利1
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(1.中国石油大学石油工程学院,山东青岛 266580;2.中国石化胜利油田分公司采油工艺研究院,山东东营 257000;3.中国石油青海油田采油一厂,青海海西州 816400)
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| 摘要: |
| 利用两性表面活性剂十六烷基磺基甜菜碱(HDAPS)、阴离子表面活性剂十二烷基硫酸钠(SDS)和助剂在高盐条件下制备两种蠕虫状胶束体系,即HDAPS-SDS体系和HDAPS-SDS-0.2％助剂混合体系,研究体系的黏弹性能、降低油水界面张力性能和驱油效果。结果表明,质量分数为0.73％的HDAPS-SDS体系所形成的蠕虫状胶束在60℃时黏度为42.3mPa·s,与原油界面张力最低值为6.0×10-2 mN·m-1;加入0.2％助剂后,0.73％ HDAPS-SDS体系的黏度提高到51mPa·s,并可与原油达到6.7×10-3 mN·m-1的超低界面张力;两种新型蠕虫状胶束具有流度控制和降低油水界面张力的双重作用,具有较好的驱油效果。 |
| 关键词: 蠕虫状胶束 耐盐 黏弹性 油水界面张力 驱油效果 |
| DOI：10.3969/j.issn.1673-5005.2014.02.025 |
| 分类号:TE 357.46 〖HTH〗 |
| 基金项目:国家自然科学基金项目(21273286,9);中央高校基本科研业务费专项(13CX02045A);长江学者和创新团队发展计划项目(IRT1294);山东省“泰山学者”建设工程项目(20070704);霍英东教育基金基础性研究课题(141047) |
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| Properties and oil displacement efficiency of new type salt tolerance wormlike micelles |
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FAN Hai-ming1, ZHANG Hong-tao1, YU Deng-lang2, LI Ai-shan2, WANG Zhao3, ZHAO Jian1, KANG Wan-li1
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(1.School of Petroleum Engineering in China University of Petroleum, Qingdao 266580, China;2.Research Institute of Oil Production Technology, Shengli Oilfield Company, SINOPEC, Dongying 257000, China;3.First Oil Production Plant in Qinghai Oilfield, PetroChina, Haixizhou 816400, China)
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| Abstract: |
| Two types of wormlike micelles systems were prepared using zwitterionic (N-hexadecyl-N,N-dimethyl-3-ammonio-1-propane sulfonate, HDAPS), anionic (sodium dodecyl sulfate, SDS) surfactants, and chemical additive at high salinity simulated water, which are HDAPS-SDS system and HDAPS-SDS with 0.2% auxiliary chemical mixed system, respectively. And the viscoelasticity, properties of reducing oil/water interfacial tension, as well as the oil displacement efficiency of the wormlike micelles were investigated. It is found that the viscosity of 0.73% mass fraction HDAPS-SDS system is 42.3mPa·s at 60℃, and the minimum dynamic interfacial tension between crude oil and water is 6.0×10-2 mN·m-1. By adding 0.2% chemical additive, the viscosity of 0.73% HDAPS-SDS is increased to 51mPa·s, and the oil/water interfacial tension is reduced to ultralow level of 6.7×10-3 mN·m-1. Due to the dual functions of mobility control and reducing the oil/water interfacial tension, the two new wormlike micelles present good oil displacement efficiency as flooding systems. |
| Key words: wormlike micelle salt tolerance viscoelasticity oil/water interfacial tension oil displacement efficiency |
