Journal of Southwest Petroleum University(Science & Technology Edition) ›› 2023, Vol. 45 ›› Issue (1): 55-70.DOI: 10.11885/j.issn.1674-5086.2022.04.27.03

• OIL AND GAS ENGINEERING • Previous Articles     Next Articles

Research Progress, Challenge and Prospect of Nanoscale Oil-displacing Materials for Enhanced Oil Recovery

ZHANG Chenjun1, JIN Xu1, YUAN Bin2, ZHANG Lei3, ZHENG Shaojing4   

  1. 1. PetroChina Research Institute of Petroleum Exploration & Development, Haidian, Beijing 100083, China;
    2. School of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong 266580, China;
    3. College of Engineering, Peking University, Haidian, Beijing 100871, China;
    4. International Exploration & Development Corporation, PetroChina, Xicheng, Beijing 100011, China
  • Received:2022-04-27 Published:2023-02-24

Abstract: This review summarizes the research progress of nanoscale oil-displacing materials developed by various researchers, describes the application effect of silica nanoparticles, metal-oxide nanomaterials, polymer nanospheres and carbon nanomaterials, analyses the physical and chemical properties of existing nanoscale oil-displacing agents and their EOR mechanism in porous reservoir media, including nanometer-size effect, wettability alteration, structural disjoining pressure, mobility ratio improvement, and predicts the potential of nanoscale oil-displacing materials in high water cut reservoir, low permeability reservoirs, tight oil and shale oil in China. In addition, the review points out the challenges and research direction in the process of oilfield development, such as testing methods, accuracy of mathematical model, material versatility, economy and industrial production, and provides a theoretical and experimental basis for their large-scale application in EOR.

Key words: oilfield development, nano-materials, enhanced oil recovery, mechanism, complex reservoirs, scientific research

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