胜利管输稠油油溶性降黏剂的研制

中国石化石油化工科学研究院针对胜利稠油的组成和胶体结构特点，研制了新型油溶性降黏剂RPJN-SL。在加剂质量分数为2%、温度为50 ℃、剪切强度为200 r/min时，对5种胜利稠油的降黏率均大于55%，其中对单56-13-19稠油的降黏率高达73.6%；激光光散射、X射线衍射研究结果表明，降黏剂RPJN-SL对沥青质、胶质聚集体胶团具有显著的分散作用，使胶团尺寸大幅减小，并降低沥青质聚集体结构的有序性，从而削弱沥青质分子间相互作用力，形成分散程度更高、内部作用力更弱的体系，使稠油黏度大幅降低；降黏剂RPJN-SL的降黏效果基本不受温度变化的影响，并具有较好的抗剪切能力，可满足现有管输工艺条件使用要求。

DEVELOPMENT OF OIL-SOLUBLE VISCOSITY REDUCER FOR PIPELINE TRANSPORTATION OF SHENGLI HEAVY OIL

The heavy oil of Shengli oilfield has a high viscosity and is difficult to transport. A new type of oil-soluble viscosity reducer RPJN-SL is developed, which has a viscosity reduction rate (VRR) of more than 55% for Shengli heavy oil. The mechanism of the oil-soluble viscosity reducer （VR）is studied by dynamic light scattering and X-ray diffraction. The results show that the VR molecules interact with the aggregate micelle of asphaltene and resin to reduce the micelle size and the internal force between micelles so as to depress the viscosity of the heavy oil and reduce the order of the asphalt aggregate structure as well. The influencing factors studied show that the VRR rises with increasing the concentration of VR, and is not affected by temperature and shearing. The oil-soluble viscosity reducer RPJN-SL can fulfill the demands of pipeline transportation.