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中原油田是一个多层系、多油藏类型的复杂断块油田 ,部分区块储层中黏土特别是膨胀性黏土含量高 ,对注入水水质的要求较高 .本文对阳离子聚合物与聚合铝复配处理中原油田采油污水进行了研究 ,结果表明 :当聚合铝浓度为 5 0 mg/L时 ,阳离子聚合物的分子量、加入浓度、污水的 p H值、污水温度等对处理效果影响大 ,当阳离子聚合物的黏均分子量为 1 2 0万、加入浓度 3～ 5 mg/L、污水的 p H值为 6.5～ 8.5、污水温度在 45℃时 ,中原油田采油一厂采油污水中悬浮物、油的含量分别由处理前的 1 65 mg/L,1 1 8mg/L降低到 1 .2 mg/L及 5 .0 mg/L ,滤膜系数达到 35
Zhongyuan Oilfield is a complex fault block oilfield with multi-layer and multi-reservoir types, and the content of clay, especially expansive clay in some block reservoirs is high, which has a high requirement on the quality of injected water.In this paper, the relationship between cationic polymer and polyaluminum The results showed that when the concentration of the polymetallic aluminum is 50 mg / L, the molecular weight of the cationic polymer, the added concentration, the p H value of the sewage water and the temperature of the sewage water have a great influence on the treatment effect. When the viscosity average molecular weight of the cationic polymer is 12 million, the concentration of the wastewater is 3-5 mg / L, the p H value of the sewage is 6.5-8.5 and the temperature of the sewage water is 45 ° C., the suspended solids , The content of oil decreased from 1 65 mg / L and 118 1mg / L before treatment to 1.2 mg / L and 5.0 mg / L respectively, and the membrane coefficient reached 35