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以烯烃，烯烃基脂肪酸酯和烯属不饱和酰胺或烯属烃磺酸盐为主要原料，合成了含蜡原油流动性改进剂Ｈ８９－２（三元共聚物）．综合评定了Ｈ８９－２改善青海原油流动性能的效果．探讨了它的降凝作用机理．
The waxy crude oil fluidity improver H89-2 (terpolymer) was synthesized with olefins, olefinic fatty acid esters and ethylenically unsaturated amides or olefin sulfonates as the main raw materials. Comprehensive evaluation of the H89-2 to improve the flow of Qinghai crude oil effect. The mechanism of its depressive effect was discussed.