CO2度对聚合物增强泡在蒸汽前线的性能的影响
Mingxuan Wu1,2, Binfei Li1,2, Liwei Ruan1,2
1Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, China.
Polymers
|October 16, 2024
概括
降低二氧化碳 (CO2) 度可以提高聚合物增强泡 (PEF) 的稳定性和在重油储中的堵塞性能. 聚合物增强泡的稳定性,但高温 (200°C) 降低性能.
科学领域:
- 石油工程是石油工程中的一个.
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
背景情况:
- 重油回收通常涉及蒸汽注入,在蒸汽前线创建高温和高压条件.
- 控制蒸汽前线的流体流动性对于高效的油位移和扫除效率至关重要.
- 聚合物增强泡 (PEF) 被研究为在这些具有挑战性的环境中控制移动性的潜在代理.
研究的目的:
- 研究二氧化碳 (CO2) 度对聚合物增强泡 (PEF) 的稳定性和堵塞性能的影响.
- 评估聚合物添加剂在高温和高压条件下减轻泡降解中的作用.
- 了解气体成分 (CO2与N2) 和温度对多孔介质中PEF行为的影响.
主要方法:
- 进行了批量泡实验,以评估泡性能,界面特性和使用CHSB表面活性剂和Z364聚合物的风湿学.
- 进行了核心洪水实验,以评估PEF在合成多孔介质中的堵塞性能.
- 在不同的CO2/N2气体比率和高达200°C的温度下分析了泡稳定性和流动阻力.
主要成果:
- 减少PEF配方中的二氧化碳度提高了泡的稳定性和在多孔介质中的抗流性.
- 聚合物添加显著改善了液体薄膜稳定性和泡粘度,抵消了高温下CO2引起的降解.
- 200°C的临界温度导致泡稳定性和阻力因子显著下降,表明性能限制.
结论:
- 气体成分和聚合物度是影响移动控制PEF性能的关键因素.
- 在重油回收过程中,PEF显示了在蒸汽前线控制流体流动性的潜力,其最佳性能取决于运行条件.
- 需要进一步的研究来解决泡在非常高的温度 (约200°C) 的稳定性限制.
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