CO2 - 具有二甲基硫酸盐,聚乙烯胺和的响应式插头凝
Fanghui Liu1, Mingmin Zhang2, Huiyu Huang3
1Sinopec Key Laboratory of Drilling Completion and Fracturing of Shale Oil and Gas, Beijing 102206, China.
Polymers
|April 28, 2025
概括
一种新型的对二氧化碳有反应性的堵塞凝,配备了聚乙烯胺 (PEI),二二硫酸 (SDS) 和纳米二氧化,有效地对抗增强石油回收 (EOR) 中的气体通道. 这种凝显著提高了在异质水库中的石油回收和二氧化碳封存效率.
科学领域:
- 石油工程是石油工程中的一个.
- 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:
- 在二氧化碳泛滥中的气体导通减少了异质储库中的石油回收和二氧化碳封存效率.
- 有效的减缓策略对于优化增强石油回收 (EOR) 操作至关重要.
研究的目的:
- 开发和评估一种对二氧化碳有反应性的堵塞凝,以减轻气体通道.
- 在充满挑战的水库条件下增强石油回收和二氧化碳封存.
主要方法:
- 使用聚乙烯胺 (PEI),二硫酸盐 (SDS) 和纳米来制备一种对二氧化碳有反应的凝.
- 凝性质的特征包括粘度,对CO2/N2的反应性,剪切薄化,自我愈合,在高温和盐度下稳定性.
- 评估不同气体透度的人工芯的堵塞效率.
主要成果:
- 优化的凝 (0.8%SDS,0.8%PEI,0.1%纳米二氧化) 呈现出显著的CO2响应性加厚 (粘度>12,000mPa·s).
- 凝显示出可逆的粘度变化,剪切薄化,自我愈合,在恶劣条件下稳定 (90°C,20,000 mg/L盐度).
- 插头实验实现了>95%的效率,使初始透率为100-500mD的核心的透率降低到<0.2mD.
结论:
- 开发的对二氧化碳有反应性的堵塞凝是EOR中气体通道的有希望的解决方案.
- 这项技术可以显著提高原油油库的石油回收和二氧化碳储存能力.
- 在各种条件下凝的强大性能突显了其实际应用.
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