西南石油大学学报(自然科学版) ›› 2026, Vol. 48 ›› Issue (3): 123-132.DOI: 10.11885/j.issn.1674-5086.2024.01.22.02

• 石油与天然气工程 • 上一篇    下一篇

纳米颗粒在提高原油采收率中的研究应用进展

卢聪, 朱秋燕, 郭建春   

  1. 油气藏地质及开发工程全国重点实验室·西南石油大学, 四川 成都 610500
  • 收稿日期:2024-01-22 发布日期:2026-07-06
  • 通讯作者: 卢聪,E-mail:lucong@swpu.edu.cn
  • 基金资助:
    国家自然科学基金(52374044);四川省科技计划(2023JDRC0008)

Research and Application Progress of Nano-particles in Enhanced Oil Recovery

LU Cong, ZHU Qiuyan, GUO Jianchun   

  1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
  • Received:2024-01-22 Published:2026-07-06

摘要: ,针对低孔低渗、稠油等油藏,化学驱、气驱等方法受储层等条件限制,可引入纳米颗粒进行技术改进。为使业界进一步了解纳米颗粒如何提高采收率,对其机理进行了详细地阐述,主要包括:降低界面张力、结构分离压、改善润湿性、流体流变性和调剖作用。纳米颗粒吸附于油水界面时一方面可以降低油水界面张力提高采收率,另一方面可以形成位阻屏障提高乳液或泡沫的稳定性。纳米颗粒聚集于油、水、岩石三相接触区域时,依靠布朗运动和静电斥力产生结构分离压迫使油滴从岩石表面剥离,并吸附于岩石表面改善润湿性。纳米颗粒还可以通过吸附沥青质改善原油流变性,以及通过调剖扩大驱替范围。此外,还介绍了纳米颗粒提高采收率的国内外研究发展现状及现场应用。

关键词: 纳米颗粒, 提高采收率, 界面张力, 润湿性, 结构分离压, 调剖作用

Abstract: For low porosity and low permeability reservoir, heavy oil reservoir and other reservoirs, chemical flooding, gas flooding and other methods are limited by reservoir conditions, and nanoparticles can be introduced to improve the technology. In order to make the industry further understand how to improve oil recovery, the mechanism of nanoparticles is described, including reducing the interfacial tension, structural disjoining pressure, improving the wettability and fluid properties, and pore channels plugging. On the one hand, nanoparticles adsorbed on the oil-water interface can reduce the interfacial tension of oil and water to improve oil recovery, on the other hand, they can form a steric barrier to improve the stability of emulsion or foam. When the nanoparticles gather in the three phase contact area of oil, water and rock, they rely on Brownian motion and electrostatic repulsion to produce structural separation and compression, so that the oil droplets are removed from the rock surface and adsorbed on the rock surface to improve the wettability. Nanoparticles can also improve crude oil rheology by adsorption of asphaltene and extend displacement range by pore channels plugging. In addition, the research development and field application of enhanced oil recovery of nanoparticles at home and abroad are also introduced.

Key words: nano-particles, enhanced oil recovery, interfacial tension, wettability, structural disjoining pressure, pore channels plugging

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