Structural characterization and oil displacement performance testing of oil‐based supramolecular systems based on polyacrylamide

Abstract Polyacrylamide nanospheres are widely used as recovery‐enhancing polymers in low‐permeability oil fields. However, with the further exploitation of oil fields in recent years, the performance of the regulating drive system has been put forward to higher requirements, so this study of the structure and oil displacement performance of the oil‐based supramolecular system based on polyacrylamide, and further discusses its oil displacement mechanism. The results show that the viscosity value of the oil‐based supramolecular system increases significantly, which can effectively improve the mobility ratio and improve swept volume. The ability of the system to remove crude oil from the slides is significantly increased, and the mathematical relationships are discussed. The oil displacement efficiency of the oil‐based supramolecular system in different dispersion media was explored in combination with microchannels of a nonhomogeneous multistage bifurcation structure. This work supports the practical application of oil‐based supramolecular nanospheres in oil fields.