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阳离子和离子粘弹性表面活性剂系统的流量特性和增强的油回收性能
Chenyue Ling1, Yafei Liu1, Xuchun Yang1
1College of Petroleum Engineering, Xi'an Shiyou University, Xi'an 710065, China.
Gels (Basel, Switzerland)
|August 28, 2025
概括
这项研究表明,一种新的表面活性剂混合物可以在具有挑战性的异质水库中改善石油回收. 优化的混合物通过粘弹性和可湿性改变增强了油位.
科学领域:
- 石油工程
- 化学工程
- 材料科学
背景情况:
- 传统的表面活性剂在异质储备中扎,以提高石油回收率 (EOR).
- 了解流体流动和界面特性对于优化 EOR 策略至关重要.
研究的目的:
- 调查一个联合的阳离子 (二甲基硫酸盐 - SDS) 和zwitterionic (oleylamidopropyl betaine - OAB-30) 表面活性剂混合物的EOR潜力.
- 分析这种混合物对异质多孔介质的两相流动行为的影响.
主要方法:
- 使用微通道,界面张力测量和学测试对六种表面活性剂溶液进行选.
- 微流体装置中的微尺度油位移实验具有不同的孔结构.
- 湿度的变化和关键菌度的分析.
主要成果:
- 一种优化的混合物 (0. 2% SDS, 0. 6% OAB-30) 显著降低了界面张力至0. 374 mN/ m.
- 表面活性剂混合物诱导了粘弹性行为,并改变了表面的水性.
- 与异质模型中的水淹水相比,石油回收得到了28.46%至49.96%的改善.
结论:
- 粘弹性表面活性剂混合物通过乳化,溶解和可湿性修改来增强异质水库中的石油回收.
- 通过优化移动性比率,有利的菌形成和凝状特性有助于提高扫除效率.
- 这项研究提供了在复杂地质构成中使用粘性弹性表面活性剂的机制性见解.
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