【摘要】 本文总结多年来降凝剂的研究工作，阐述了原油的族组成对原油加剂处理效果的影响。多蜡原油随着蜡含量的增加对降凝剂的感受性逐渐变差，高碳蜡（ Ｃ４０ 以上） 的含量过高或蜡的碳数分布过于集中都会导致原油对降凝剂的感受性变差，胶质沥青质对原油加剂处理效果的影响因结构组成不同而异。更多还原

【Abstract】 This paper deals with the responsibility (R) to a pour point depressant, WHP, of various crude oils (26 totally) as influenced by their group composition. WHP is a tercopolymer of ethylene, vinylacetate, and a block polyetherized vinyl monomer. It is shown that the pour point depression efficiency of WHP for waxy crude oils gradually become worse as the wax content increases and is low when the carbon number of wax is high or the carbon numer distribution of wax is too narrow. It is concluded that the crude oil with wax content 2-15% and PP<25℃ is strongly responsible, with wax content 15-30% and PP<40℃-medium and with wax content >30% and PP>40℃-weakly responsible to PPDs. The influence of resin and asphaltene on R varries differently depending upon their chemical structure.更多还原