各种聚合动力学对青烯沉积热泳速度的影响
Amir Hossein Nikoo1, Mojtaba Ghaedi2, M Reza Malayeri3
1Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran.
Scientific reports
|August 8, 2024
概括
油井中的青沉积受到聚合动力学和热泳的影响. 这项研究揭示了沉积速度随着粒子大小的增加和井柱深度的增加而下降.
科学领域:
- 石油工程是石油工程中的一个.
- 物理化学 物理化学
- 流体动力学 流体动力学
背景情况:
- 青沉积在原油井柱中提出了重要的流量保证挑战.
- 粒子聚合动力学会影响青素的生长和随后的沉积.
- 热泳,由温度梯度驱动,在井柱内的青沉积中发挥作用.
研究的目的:
- 为了研究各种聚合动力学下青的热泳沉积速度.
- 分析温度梯度对井柱中青烯沉积的影响.
- 为减轻石油生产中的青烯沉积提供见解.
主要方法:
- 在80°C和4500-5500 psia. 的情况下,实验观察了青的尺寸分布.
- 分析关于青烯尺寸分布的文献数据.
- 在选定的井柱中建模热泳沉积速度,温度差异为5-50°C.
- 对从100nm到9μm的粒子大小进行检查.
主要成果:
- 非异热沉积速度从井柱的顶部到底部下降.
- 随着青颗粒大小的增加,热泳沉积速度会降低.
- 聚合动力学,包括交叉行为,沉积,RLA和DLA,影响沉积.
结论:
- 热泳沉积是井柱内青沉积的关键因素.
- 了解粒子大小,聚合动力学和热泳之间的关系对于流量保证至关重要.
- 这些发现为减少油井中青沉积提供了实际指导.
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