开发用于高温海上碳酸盐储的表面活性剂配方
Krishna Panthi1, Kishore K Mohanty1
1Hildebrand Department of Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, TX, United States.
Frontiers in chemistry
|August 22, 2024
概括
开发有效的表面活性剂配方用于高温,海上碳酸盐储是具有挑战性的. 这项研究使用一种新的表面活性剂-聚合物系统实现了超过99%的油脂回收,即使在恶劣的高盐度条件下.
科学领域:
- 石油工程是石油工程中的一个.
- 增强石油回收的方法
- 表面活性剂化学 表面活性剂化学
背景情况:
- 在水淹没后的剩余油和是石油储库的一个主要挑战.
- 高温的海上碳酸盐储由于恶劣的条件和不兼容的盐水,对增强石油回收 (EOR) 存在独特的困难.
- 在海上作业中常见的海水注入引入了高二价离子度,在高温下对许多表面活性物质有害.
研究的目的:
- 开发一种稳定有效的表面活性剂配方,用于在高温 (100°C) 海上碳酸盐储中调动剩余油.
- 为了应对表面活性剂与海水盐水在水库条件下的兼容性的挑战.
- 优化表面活性物-聚合物 (SP) 洪水,在具有挑战性的水库环境中最大限度地回收石油.
主要方法:
- 研究了使用单一表面活性剂,表面活性剂混合物和辅溶剂的表面活性剂-油-盐水相态度.
- 制定了一个由三种表面活性剂和一种辅溶剂组成的表面活性剂系统,以实现超低的界面张力 (IFT).
- 在模拟的水库条件下,评估了优化表面活性剂-聚合物系统在压碎的水库岩石包中的性能.
主要成果:
- 使用3种表面活性剂和1种辅助溶剂的特定混合物,用目标油实现了超低的界面张力 (IFT).
- 表面活性物-聚合物 (SP) 泛滥,具有最佳的盐度梯度,导致99%以上的累积石油回收.
- 使用恒定度海水的SP洪水也显著改善了石油回收 (>91%) 与仅用水淹水相比.
结论:
- 开发的表面活性剂配方有效地提高了高温碳酸盐储中的石油回收,即使与不兼容的海水盐水.
- 优化的盐度梯度提高了表面活性剂-聚合物洪水的性能,以最大限度地提高石油回收.
- 这项研究展示了一个可行的EOR策略,用于挑战以前遭受水淹没的海上碳酸盐水库.
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