压裂返排液回收处理为新的压裂液继续使用不仅可以节约大量的化工材料、水资源，而且可以减少排污、缩短施工周期和提高生产进度。利用AM、AA、阳离子疏水单体制备了一种三元超分子聚合物降阻剂JY-1。其降阻率测试结果表明，质量分数为0.1%~0.2%的JY-1水溶液的降阻率达到70%以上，耐NaCl盐溶液在10×10⁴ μg/g以上，耐CaCl₂盐溶液在5×10⁴ μg/g以上，证明JY-1降阻剂有很好的耐盐性能。利用现场返排液测试其降阻率为71%。现场应用表明，JY-1可以实现压裂返排液的重复利用，对现场节约大量水资源及减少环境污染具有实际意义。

Recovering fracturing flowback fluid as a new fracturing fluid can not only save a lot of chemical materials and water resources, but also reduce sewage discharge, shorten construction cycle and improve production progress.YS-1, a ternary supramolecular polymer resistance reducer, is prepared from AM, AA and cationic hydrophobic monomers.Laboratory evaluation results show that the resistance reduction rate of 0.1%-0.2% YS-1 aqueous solution exceeds 70%.YS-1 can keep good resistance reduction rate above 100 000 μg·g^-1 of NaCl solution and 50 000 μg·g^-1 of CaCl₂ solution.Experimental results show that YS-1 has good salt resistance.YS-1 has a resistance reduction rate of 71% in field test for fracturing flow-back fluid.It is proved through field application that YS-1 can help to realize the reuse of fracturing flow-back fluid, which is of great practical significance to save a lot of water resources and reduce pollution.