Research Progress on Functionalized Polymer Microspheres for Deep Profile Control and Flooding

Abstract

Based on a comprehensive review of literatures concerning polymer microspheres for enhanced oil recovery over the past five years, this paper centers on profile control agents composed of acrylamide, providing a detailed overview of the preparation methods of functionalized polymer microspheres. According to the functional characteristics, the research progress of fluorescent polymer microspheres, smart polymer microspheres, and organic-inorganic nanocomposite microspheres is highlighted. Additionally, the characterization parameters and methods of polymer microspheres are summarized. The challenges and issues associated with the application of polymer microspheres in deep profile control and oil displacement technologies are discussed, which holds significant implications for the development of heterogeneous and low-permeability oil reservoirs.