Synthesis and Performance of an Acrylamide Copolymer Containing Nano-SiO₂ as Enhanced Oil Recovery Chemical

Figure 9

Viscosity versus temperature for AM/AA and AM/AA/NSFM solution. The viscosity of copolymer solution (0.5 wt%) was measured by Brookfiled DV-3 viscometer at 7.34 s⁻¹ using number 62 rotor (rotation speed: 18.8 r/min).