关键词: 碱-聚合物体系, 流度, 黏度稳定性, 驱油效果, 污水, 实验研究

Abstract: In order to ensure the oil-displacement effect,it is very important to enhance the mobility control ability of the alkaline-polymer(AP)system.The influences of polyvinyl alcohol,cation polyacrylamide,montmorillonite,glycerin and higher alcohol on the viscosity of alkaline-polymer system prepared by sewage were investigated according to the thermal oxidative aging experiments.The results showed that those compounds could improve the viscosity stability of the alkaline-polymer system by producing intermolecular hydrogen bond,Coulomb force and Van der Waals force.Meanwhile,the improvement degree was affected by pH value,small molecule electrolyte content of the AP system and temperature.The examination results showed that the GH compound viscosity-stabilizer could generate and enhance the viscosity stability effect when the content of GH was 10 mg/L.The enhancement of viscosity-stability effect would be strengthened with the increase of GH density.When the content of GH is 150 mg/L at 63℃,the retention rate of the viscosity of AP system can reach 129.3 % for aging 80 days.

Key words: alkaline-ploymer system, mobility, viscosity stability, oil-displacement effect, sewage, experimental study