集输工艺对高蜡原油中降凝剂作用的影响分析

高蜡原油的集输工艺对降凝剂的降凝降黏作用有较大影响。使用降凝剂AE对吉林木南原油降凝处理,考察了集输过程中降凝剂加量和加剂温度、泵的高速剪切、原油的重复加热和输送过程中冷却速率等工艺条件对降凝剂作用效果的影响。结果表明,降凝剂最佳加剂量0.7%,最佳加剂温度70℃,高速剪切温度应在析蜡点10℃以上,重复加热温度应不低于60℃,在55～40℃的析蜡高峰区应使原油温度缓慢降低。

Analysis on influence of gathering and transportation technology on the effect of pour point depressant in high wax crude oil

The gathering and transportation technology of high-wax crude oil has a great influence on reducing the viscosity and pour point of oil. Jilin Munan crude oil is depressed by pour point depressant AE, and the influences of the dosage of pour point de- pressant, adding temperature, high-speed shearing of pump, repeated heating and cooling rate in gathering and transportation process on the effect of pour point depressant are researched. Experimental results show that the optimal conditions are as follows ： additive dos- age of pour point depressant is 0.7% , adding temperature is 70 ℃ , the temperature of high-speed shearing is at least 10℃ higher than wax precipitation point, the repeated heating temperature should not be lower than 60℃ , the cooling process should be slow down in the 55-40 ℃ wax crystallization peak area.