使用2.5D模型研究聚合物对粘土花和残留油行为的影响
Xianda Sun1, Yuchen Wang2, Qiansong Guo2
1State Key Laboratory of Continental Shale Oil, Northeast Petroleum University, Daqing 163318, China.
Polymers
|January 8, 2025
概括
表面活性剂-聚合物泛滥中的聚合物-粘土相互作用通过形成粘性混合物来减少石油回收. 这项研究揭示了聚合物如何花粘土,捕获油,并降低注射生产能力.
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
- 合体和表面科学科学
背景情况:
- 表面活性聚合物 (SP) 洪水增强了石油回收,但可能会减少注入生产 (I/P) 能力.
- 剩余油,特别是粒际吸附,在二次复合物洪水 (SCF) 中仍然是一个挑战.
- 聚合物 - 粘土相互作用,特别是考利尼特 (Kln) flokulation,与SCF效率的降低有关.
研究的目的:
- 调查SP洪水期间I / P能力下降背后的机制.
- 阐明聚合物 - 粘土相互作用在捕获剩余油中的作用.
- 了解考利尼特花如何影响原油排位.
主要方法:
- 使用微观可视化位移模型 (MVDM).
- 采用显微镜技术观察SCF过程中的粒子迁移.
- 模拟的储迁移颗粒使用高酸盐水悬浮 (Kln-WS).
- 对Kln-WS,原油 (CO) 和它们的混合物观察到的位移效应.
主要成果:
- 观察到,聚合物起到花剂的作用,在移位过程中促进高酸花.
- 证明考利尼特花增加了原油的粘度.
- 确定了迁移粒子和原油的高粘度混合物的形成.
- 表明这些混合物在毛孔中积聚,阻碍了进一步的油位移.
结论:
- 聚合物诱导的高酸花块是降低SCF效率的关键机制.
- 粘性油颗粒聚合物的形成导致石油陷.
- 了解和减轻这些相互作用对于优化EOR策略至关重要.
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