用纳米纤维素/硬质葡萄糖增强的坚固,耐热的复合水凝用于油田水堵塞
Ruoteng Ma1, Lei Dai2, Dalong Sun3
1College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
Carbohydrate polymers
|June 14, 2024
概括
这项研究引入了一种由聚烯胺,硬质葡萄糖和纤维素纳米纤维制成的新复合水凝 (STP). STP水凝提供了增强的稳定性,高温耐受性和生物降解性,用于改进的石油回收应用.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 石油工程是石油工程中的一个.
背景情况:
- 传统的聚烯胺 (PAM) 水凝在油田应用中存在局限性,原因是生物降解性差,机械强度和耐温度性.
- 有效的水凝堵塞剂对于减少水油混合和提高石油开采中石油回收率至关重要.
研究的目的:
- 开发一种机械稳定和耐高温复合水凝 (STP) 用于油田水堵塞应用.
- 通过结合可生物降解元件来提高水凝堵塞剂的可持续性和性能.
主要方法:
- 通过将可生物降解的硬质葡萄糖 (Slg) 和TEMPO氧化纤维素纳米纤维 (TOCN) 整合到聚烯胺 (PAM) 基质中,开发了一种复合水凝 (STP).
- 在高温 (140°C108小时) 的盐水环境中通过抗衰老测试来评估水凝的稳定性.
- 在水泛滥模拟中描述了水凝的性能,在模拟油田条件下测量突破压力和堵塞压力.
主要成果:
- 开发的STP复合水凝显示出出色的机械稳定性和耐高温性,在盐水条件下在140°C下持续108小时.
- STP水凝的突破压力为42.10psi/ft,堵塞压力为14.74psi/ft,流速为0.75cm3/min,符合油田水堵塞标准.
- 加入Slg提供了耐热性,而TOCN提高了PAM水凝的机械强度.
结论:
- 开发的STP复合水凝为油田应用中传统的水凝堵塞剂提供了可持续,坚固和耐热的替代品.
- 多糖类,如硬质葡萄糖和纤维素纳米纤维显示出在创建先进材料增强石油回收的显著潜力.
- 在极端条件下STP水凝的性能验证了其适用于要求高的油田水堵塞操作的适用性.
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