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关于离子-非离子混合表面活性剂的研究,用于在高盐水库中增强石油回收
Luxuan Ma1, Ping Xu2, Lei Wang1
1College of Chemistry and Chemical Engineering, Institute for Sustainable Energy and Resources, Qingdao University Qingdao 266071 China tingyvxuan@126.com.
RSC advances
|January 8, 2024
概括
一种新的三元混合表面活性剂系统,结合了酸二甲胺 (LDEA),八度酸二甲胺 (ODEA) 和二甲硫酸 (SDS),有效地提高了高盐水库中的石油回收. 该系统实现了超低的界面张力,并表现出出色的湿和乳化特性.
科学领域:
- 石油工程是石油工程中的一个.
- 表面活性剂化学 表面活性剂化学
背景情况:
- 超盐水库对提高石油回收具有重大挑战,原因是盐度高,和离子度高.
- 传统的增强石油回收方法经常与这些环境中的恶劣条件作斗争.
研究的目的:
- 开发和优化专门的三元混合表面活性剂系统,以提高高盐水库的石油回收.
- 评估表面活性剂系统的性能,从表面张力降低,湿能力,乳化能力和吸附能力来看.
主要方法:
- 一种三元混合表面活性剂系统是使用非离子类胺表面活性剂 (酸二甲胺 - LDEA,八酸二甲胺 - ODEA) 和一种离子表面活性剂 (二甲硫酸盐 - SDS) 制成的.
- 确定LDEA:ODEA:SDS的最佳质量比为4.64:0.66:1.00.
- 实验评估包括界面张力测量,湿能力测试,乳化功率评估和在各种水库条件下 (盐度,温度,Ca/Mg含量) 的静态吸附能力测量.
主要成果:
- 优化的三元表面活性剂系统实现了界面张力低于10−2 mN m−1,在储条件下达到10−3 mN m−1.
- 在高达2000毫克L-1的和离子含量,0.050.3%的表面活性剂度,5080°C的温度和20,00050,000毫克L-1.1%的盐度下观察到有效的性能.
- 表面活性剂系统表现出有利的湿和乳化能力,在油砂上静态吸附率低 (<2毫克g-1).
结论:
- 开发的LDEA/ODEA/SDS三元混合表面活性剂系统对于在具有挑战性的高盐水库中增强石油回收非常有效.
- 这种新型的表面活性剂配方为利用具有高盐度和高度的石油储备提供了一个有前途的战略.
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