使用可切换pH的四尾离子液表面活性剂加强聚烯胺乳液拖延减速器的稳定和溶解能力
Jie Qi1, Miaomiao Qing1, Yang Yang1
1College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China.
Langmuir : the ACS journal of surfaces and colloids
|January 11, 2025
概括
一种新型的pH可切换表面活性剂 (OA/Cyclen) 稳定了聚烯胺 (PAM) 乳液以进行裂变. 这种表面活性剂提供可控制的稳定性和快速释放性,提高了阻力降低性能.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 乳液阻抗降低剂,特别是聚烯胺 (PAM),对于体积压裂作业至关重要.
- 平衡PAM的稳定性和溶解性对于高效的裂变流体性能至关重要.
研究的目的:
- 为聚烯胺 (PAM) 乳液阻力减小剂合成和表征一种可切换pH的四尾离子液体表面活性剂 (OA/Cyclen).
- 在不同的pH条件下评估OA/Cyclen稳定PAM乳液的可控制稳定性和释放性质.
主要方法:
- 从油酸 (OA) 和1,4,7,10-tetraazacyclododecane (Cyclen) 中合成OA/Cyclen表面活性剂.
- 用OA/Cyclen稳定的可切换pH的PAM乳液的制备和表征.
- 在不同的pH值下评估乳液稳定性,释放动力学,粘度和阻力减轻效率.
主要成果:
- 由于内部的质子转移,OA/Cyclen表现出pH依赖的表面活性.
- 经OA/循环稳定PAM乳液在pH7.5.5下60天显示存储稳定性.
- 在pH12.03下,PAM在20秒内完全释放,在0.05重量%的聚合物度下,降低了61.2%的阻力.
结论:
- 合成的OA/Cyclen表面活性剂提供可控制的稳定性和PAM乳液的触发释放.
- 这种pH可切换系统为开发用于破裂应用的先进阻力减速器产品提供了有希望的替代方案.
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