Synthesis and Solution Properties Evaluation of AATA Quaternary Copolymer

In this study, temperature-resistant functional monomer (TEPA) and hydrophobically associating salt-resistant monomer (APC) were synthesized, respectively. These functional monomers were polymerized with acrylamide (AM) and acrylic acid (AA) to prepare a temperature-resistant and salt-resistant polyacrylamide oil displacement agent with siloxane groups. The viscosity of quaternary copolymer (AATA) solution was taken as evaluation index, the optimum polymerization conditions were determined by single factor experiment. The structure of AATA was characterized by Fourier-transform Infrared (FTIR), 1H NMR spectroscopy and SEM. The thermal decomposition capability was analyzed by TG. The oil displacement efficiency of AATA was evaluated by core flooding experiment. The results showed that AATA had better oil displacement ability than binary copolymer (AM/AA). The enhanced oil recovery was 19.92% at 60 °C and more than 10% even at 90 °C.