根据某油田2种不同水质(水源水、污水)对聚合物溶液剪切后粘度保留率的实验结果,分析该油田水源水和污水的主要离子组成差别,研究了阳离子对聚合物溶液剪切后粘度保留率的影响.结果表明,Mg2+对聚合物溶液剪切后粘度保留率影响最大,配制聚合物溶液水质中的Mg2+浓度150 mg/L时,粘度保留率只有45.4％；配制聚合物溶液水质中Ca2+浓度150 mg/L时,聚合物溶液剪切后粘度保留率为60.1％.一价阳离子Na+与二价阳离子Mg2+和Ca2+相比,不是影响聚合物溶液粘度保留率的关键因素,在浓度3000 mg/L时,聚合物溶液剪切后粘度保留率为69.1％.在理论上对水质中离子种类对聚合物溶液剪切后粘度保留率的影响进行了分析.%According to the viscosity retention rate result of polymer solution after shearing, analysis the ion composition of sewage and water from source, research the effect on viscosty retention rate of cationic to polymer solution after shearing. The results showed that the adverse effect is highest of Mg2+on viscosity retention rate,when the concentration of Mg2+ in water is 150 mg/L,viscosity retention rate is 45.4%. When the concentration of Ca2 + in water is 150 mg/L,viscosity retention rate is 60.1%. When compared to Mg2 + and Ca2 + , has little effect on Na + to viscosity retention rate, when the concentration of Na + is 3 000 mg/L in water, viscosity retention rate is 69.1% . In theory investigate the reason that ion kind produce effect on viscosity retention rate.
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