HPAM-Cr3+凝的凝性能用于水库配置控制:传播距离和优化设计优化的影响
Mengyun Li1,2, Junjie Hu1,2, Xiang Wang1,2
1College of Petroleum Engineering, China University of Petroleum, Qingdao 266580, China.
Gels (Basel, Switzerland)
|November 26, 2025
概括
部分化聚烯胺-离子 (HPAM-Cr3+) 凝用于增强石油回收,在特定度和交联比率内表现最好. 传播距离显著限制了稳定的凝形成,需要优化凝剂量以有效转移液体.
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
- 增强的石油回收 (EOR)
背景情况:
- 部分化聚烯胺-离子 (HPAM-Cr3+) 凝对EOR至关重要,提供成本效益和高强度.
- 凝在水库中的传播距离极大地影响了凝的性能,但对于现场应用,这种影响尚未完全理解.
研究的目的:
- 建立一种可靠的方法来描述HPAM-Cr3+凝性能.
- 调查HPAM度,Cr3+交联比率和传播距离对凝形态和稳定性的影响.
- 开发一种优化的凝剂量设计方法,以便在油库中有效地转移液体.
主要方法:
- 开发了一种使用视觉检查,质参数 (G') 和水损失率 (Rw) 的凝性能表征方法.
- 进行了不同HPAM和Cr3+度的交叉实验,以创建凝形态分布图.
- 在模拟的水库条件和不同传播距离下,进行了60米的沙包装流量实验,以评估凝在模拟水库条件下的性能.
主要成果:
- 凝的性能取决于HPAM度和HPAM/Cr3+交叉连接比;稳定强凝 (SSG) 在5.56-18.68之间形成,最好在9.27.
- 没有凝形式低于800毫克/升HPAM;度超过2500毫克/升防止过度交叉连接.
- 稳定的凝形成 (SSG) 仅限于21米以下的传播距离,性能降低到21-34米之间的稳定的弱凝 (SWG),并且没有完整的凝超过34米.
结论:
- 凝的性能和稳定性高度依赖于配方参数和储传播距离.
- 设计的传播距离的很大一部分 (超过65%) 可能无法通过SSG实现有效的插入.
- 基于形态图和流体转移接口计算的优化凝剂量设计方法,可以精确地应用深度配置控制剂.
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