对于砂岩水库的弱凝深层控制系统的实验性能的评估和优化
Kazunori Abe1, Khwaja Naweed Seddiqi2, Jirui Hou3
1Department of Earth Resource Engineering and Environmental Science, Akita University, Graduate School of International Resource Sciences, 1-1 Tegata Gakuen-machi, Akita 010-8502, Japan.
ACS omega
|February 26, 2024
概括
这项研究开发了一种使用硫聚烯胺 (FPAM) 和聚乙胺 (PEI-600) 的弱凝系统,用于控制油田的过度水产. 优化的凝在核心洪水中显示出超过90%的阻塞率,增强了石油回收.
科学领域:
- 石油工程是石油工程中的一个.
- 聚合物化学 聚合物化学
- 储水库工程 储水库工程
背景情况:
- 油田过度的水生产降低了石油回收效率.
- 插水深层控制对于管理成熟水库中切断水的管理至关重要.
- 现有的方法经常与深层形成的挑战作斗争.
研究的目的:
- 制定和评估一个弱凝系统,用于深层控制油库.
- 为了优化凝成分,使用硫化多烯胺 (FPAM) 和聚乙烯胺 (PEI-600).
- 评估凝在各种条件下的性能,包括温度和盐度.
主要方法:
- 弱凝系统的实验室配方,具有不同度的FPAM和PEI-600.
- 西丹斯克瓶测试以确定凝时间,强度和稳定性.
- 粘度测试测试以评估凝粘度随时间推移.
- 微流体芯片泛滥测试用于在多孔介质中插入插头的视觉分析.
- 砂岩核心洪水实验,以评估堵塞率,注入压力和石油回收.
主要成果:
- 确定了0.5%的FPAM和0.4%的PEI-600的最佳弱凝度.
- 凝结时间因温度而异 (在<100°C下5-7天,在>100°C下0.5天).
- 高盐度 (>20,000 mg/L) 显著影响了凝强度.
- 薄弱的凝起初具有较低的粘度,从而促进了深层形成的注射性.
- 核心洪水显示,经过7天的凝后,阻塞率超过90%.
结论:
- 开发出来的弱凝系统有效地控制了深层油库中的过度水产.
- 凝的特性,包括延长凝时间和低粘度,使其能够进行深度迁移和显著的堵塞.
- 这项研究证实了这种弱凝在中低透性砂岩层中增强石油回收的潜力.
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