评价温度控制可降解聚合物临时插入剂的自我降解和插入性能
Hualei Xu1,2,3, Liangjun Zhang1,2,3, Jie Wang1,2,3
1Cooperative Innovation Center of Unconventional Oil and Gas, Yangtze University, Wuhan 430100, China.
Polymers
|September 28, 2023
概括
这项研究引入了一种新设备,用于测试临时堵塞剂 (TPA) 在骨折中的性能. 它发现,混合颗粒和粉末TPA (ZD-2) 对于临时堵塞油井是有效的,改善了水库的重建.
科学领域:
- 石油工程是石油工程中的一个.
- 储水库工程 储水库工程
- 断裂力学 断裂力学 断裂力学
背景情况:
- 临时堵塞转移断裂 (TPDF) 对于重建高水切割的旧油井和水平井至关重要.
- 目前对临时堵塞剂 (TPA) 的研究主要集中在承压和放置方面,对TPA积累体透性的数据有限.
- 了解TPA积累体的透性对于优化TPDF的有效性和最大限度地减少水库损坏至关重要.
研究的目的:
- 提出并验证一种用于评估可调节骨折孔中的TPA性能的实验装置.
- 评估不同TPA的堵塞性能和积聚体透性.
- 为了确定断裂液和TPA降解的低损伤特性.
主要方法:
- 开发了一种具有可调节骨折毛孔的实验设备,用于TPA性能评估.
- 测试了压裂液的断裂时间和残留含量,以确定容器损伤.
- 在高温 (90120°C) 下评估TPA降解性能.
- 测量TPA承压能力和临时堵塞积累体的透性.
主要成果:
- 瓜尔破裂液在300ppm破裂剂度下表现出有效的凝破裂.
- 在90120°C时,TPA的降解率超过65%,在回流过程中促进了其去除.
- 与纯粉末 (ZD-1) 或颗粒状 (ZD-3) TPA相比,混合颗粒和粉末TPA (ZD-2) 显示出更高的堵塞性能.
- ZD-2在中孔口骨折中更有效,而ZD-1在小孔口骨折中更有效;ZD-3被发现单独无效.
结论:
- 开发的实验装置有效评估TPA性能和积累体的透性.
- 结合颗粒和粉末的TPA (ZD-2) 在断裂中临时堵塞方面提供了显著的优势.
- 根据断裂孔径推特定的TPA类型,以优化TPDF操作并增强水库重建.
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