基于耐热耐盐的聚乙烯 (硫乙烯甲基酸盐) 乳化剂,适用于重油
Ziqi Wu1, Junjie Fan1, Jianwen Hu1
1School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China.
概括
新的温度反应敏捷的乳化剂,聚 styrene-co-butyl acrylate-graft-chitosan (CS-PSBMA),可在高温下实现稳定的乳化,在低温下实现脱乳化,非常适合油田应用.
科学领域:
- 聚合物化学 聚合物化学
- 合体和表面科学科学
- 石油工程是石油工程中的一个.
背景情况:
- 传统的乳化剂缺乏热稳定性,限制了它们在高温,高盐油田环境中的使用.
- 现有的乳化剂在高温下经常失效,导致脱乳和石油开采中的操作挑战.
研究的目的:
- 合成和评估用于增强石油回收 (EOR) 的新型温度响应乳化剂.
- 研究聚乙烯-co-butyl烯酸盐 (PSBMA) 和酸盐-移植-PSBMA (CS-PSBMA) 在恶劣条件下形成稳定的乳液的性能.
主要方法:
- 合成 PSBMA 和 CS-PSBMA 乳化剂.
- 在不同的温度,盐度和水与油的比率下制备和稳定性测试乳液.
- 评估不同油相的乳化和脱乳化行为,包括重油.
主要成果:
- 这两种乳化剂在60-80°C之间形成稳定的乳液,在20-40°C之间脱乳.
- CS-PSBMA表现出优越的乳液稳定性,温度反应能力 (UCST) 和显著增强的抗盐性.
- 乳液在高达2mol/L的单价盐和高达3mol/L的双价盐中保持稳定,性能优于现有技术.
结论:
- 合成的温度敏感乳化剂,特别是CS-PSBMA,为油田作业中的高温乳化和低温脱乳化提供了可行的解决方案.
- 在高盐条件下CS-PSBMA的特殊稳定性使其对增强的石油回收应用非常有希望.
- 这些新型乳化剂可以承受恶劣的储条件,提高重油回收效率.
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