摘要
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200r/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。
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 inter- act with the aggregate micelle of asphaltene and resin to reduce the micelle size and the internal force be- tween micelles so as to depress the viscosity of the heavy oil and reduce the order of the asphalt aggre- gate structure as well. The influencing factors studied show that the VRR rises with increasing the con- centration of VR, and is not affected by temperature and shearing. The oil-soluble viscosity reducer RPJN-SL can fulfill the demands of pipeline transportation.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2015年第4期67-71,共5页
Petroleum Processing and Petrochemicals
关键词
稠油
管输
降黏剂
胶质
胜利油田
heavy oil
pipeline transportation
viscosity reducer
resin
Shengli oilfield
