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针对新疆风城超稠油长距离管道的输送难题,结合超稠油特性及下游克拉玛依石化公司的加工工艺要求,对比分析了掺稀输送工艺常用稀释剂的优势与不足,提出了风城超稠油掺柴油降粘输送方法。以风重010井与重59井原油为研究对象,采用流变学法与瓶试法,同时依据相关测试标准,测试分析两种原油脱水前后的基本性质、流变特性与粘温特性,评价其掺柴油的脱水效果及其脱水前后掺柴油的降粘效果。结果表明:两种风城原油属于典型的超稠油,选用0#柴油作为稀释剂具有明显的安全经济优势;两种超稠油掺0#柴油不仅可以显著降低其表观粘度,而且有助于脱水;在0#柴油掺入体积分数为20%～25%、输油温度为80～90℃的条件下,两种超稠油掺混0#柴油处理后均具有较好的流动性与可泵送性。
Aiming at the transportation problem of long distance pipeline in Fengcheng super heavy oil in Xinjiang and combining the characteristics of super heavy oil and processing requirements of downstream Karamay Petrochemical Company, the advantages and disadvantages of diluents commonly used in sparse delivery process were analyzed. Oil mixed diesel oil viscosity reduction delivery method. Based on the relevant testing standards, the basic properties, rheological properties and viscosity-temperature characteristics of two crude oils before and after dehydration were evaluated and analyzed with rheological method and bottle-test method. The dehydration effect of diesel oil and the viscosity reducing effect of diesel oil before and after dehydration. The results show that the two kinds of Fengcheng crude oil belong to the typical super heavy oil, and the 0 # diesel oil as the diluent has obvious safety and economic advantages. The two super heavy oil mixed with 0 # diesel oil can not only significantly reduce the apparent viscosity, but also help In the condition of 0 # diesel incorporation of 20% ~ 25% volume fraction and oil temperature of 80 ~ 90 ℃, both super-heavy oil blended with 0 # diesel oil have better fluidity and Pumpability.