Stability, seepage and displacement characteristics of heterogeneous branched-preformed particle gels for enhanced oil recovery.

ABSTRACT: Inspired by the viscoelastic displacement theory and the advantages of preformed particle gels, we develop an innovative product called branched-preformed particle gel (B-PPG) for enhanced oil recovery. Due to its excellent viscoelastic properties, B-PPG can be used both in profile control and to improve sweep efficiency in heterogeneous reservoirs. Laboratory experiments indicate that B-PPG shows improved stability and long-term aging resistance under high temperature and salinity when compared with HPAM. The migration and displacement behaviors of B-PPG are studied by a series of sandpack core flow experiments. The results show that the B-PPG particles can migrate through the porous media, and the migration is a dynamic process of plugging and flooding. Besides, B-PPG can significantly c

SUBMITTER: Li J 

PROVIDER: S-EPMC9078029 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature