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关于pH响应的延迟,交叉连接和加权裂变流体的研究.
Hao Bai1, Fujian Zhou1, Xinlei Liu1
1National Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum, Beijing 102249, China.
Molecules (Basel, Switzerland)
|January 8, 2025
概括
这项研究引入了一种新型的pH响应式破裂液,可以减少高温水库中的摩擦. 性条件优化流体结构,使沙子运输效率高,提高石油和天然气生产.
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
背景情况:
- 由于高压和高温,深厚的高温水库对水力压裂构成挑战.
- 传统的聚合物裂变流体 (QCL) 具有高粘度,增加井口摩擦,阻碍高效运行.
研究的目的:
- 开发和评估一种具有低摩擦特性的新型pH响应的聚合物裂变流体.
- 在具有挑战性的水库条件下,优化流体配方,以改善沙子运输和改善碳化合物回收.
主要方法:
- 在 (碳酸) 和酸性条件下研究了pH对聚合物交联和流体摩擦的影响.
- 利用扫描电子显微镜 (SEM) 和红外光谱 (IR) 来分析不同pH的流体结构和聚合物链行为.
- 提出并测试了一种两阶段优化流体配方 ("盐+pH+聚合物+交联剂") 用于裂纹生成和沙子运输.
主要成果:
- 性条件有效减缓了交叉连接和减少了流体摩擦,碳酸被证明是有效的.
- 优化的pH控制在低粘度阶段增强了聚合物水化和沙子承载能力.
- SEM和IR分析证实,促进了稳定的流体网络结构,并增加了聚合物链的负电荷,改善了沙子的运输.
结论:
- 开发的响应pH的压裂液为深层高温水库开发提供了低摩擦的解决方案.
- 实地测试表明,操作压力降低,沙子运输稳定,石油和天然气产量显著增加.
- 这种配方通过解决与传统裂变流体相关的关键挑战,提高了有效的水库开发.
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