▎ 摘　　要

NOVELTY - Viscosity stabilizer comprises 4-8 pts. wt. polyallylmicrobial inoculum 0.03-0.05 pts. wt. chitosan dispersion, 80-100 pts. wt. nano oxide graphene, 8-10 pts. wt. polyvinyl pyrrolidone, 0.3-0.5 pts. wt. glutaric dialdehyde and 2-3 pts. wt. urea, 2-3 pts. wt. polymer oil. The preparation of viscosity stabilizer involves weighing raw materials, followed by adding nano oxide graphene dispersion of chitosan, and adding polyvinylpyrrolidone in ultrasonic extracting machine with constant temperature for 2-4 hours, then adding polyallylamine, urea, glutaraldehyde and microbialinoculum under ice water bath condition, stirring and mixing for 3-5 hours, discharging, sealing and packaging to obtain desired product. USE - Viscosity stabilizer for polymer flooding. ADVANTAGE - The viscosity stabilizer has excellent viscosity stabilizing effect.