Advances of microemulsion and its applications for improved oil recovery

Adv Colloid Interface Sci. 2022 Jan:299:102527. doi: 10.1016/j.cis.2021.102527. Epub 2021 Sep 28.

Abstract

Microemulsion, because of its excellent interfacial tension reduction and solubilization properties, has wide range of applications in the petroleum industry, especially in improved oil recovery (IOR). Herein, the concept, types and formation mechanism of microemulsion were primarily introduced. Then, the preparation and characterization methods were illustrated. Additionally, several effect factors were elaborated specifically based on the composition of microemulsion. Finally, the application of microemulsion in IOR was addressed, including IOR mechanism analysis based on sweep efficiency and displacement efficiency, injection method (microemulsion flooding, in-situ microemulsion formation) and field tests. Furthermore, the current challenges and prospects of microemulsion on IOR were analyzed.

Keywords: Field tests; Improved oil recovery (IOR); Influence factors; Microemulsion.

Publication types

  • Review