日用化学工业（中英文）2025，Vol.55Issue(3)：322-327,6.DOI:10.3969/j.issn.2097-2806.2025.03.007
高含蜡原油聚合物共混物高效降凝剂的合成及性能研究
Preparation and performance evaluation of polymers and polymer blend as high-efficiency pour point depressant for high-wax crude oil
摘要
Abstract
High-wax crude oil often has the features of high density,high viscosity,and high pour point,which leads to high costs during exploitation,transportation,and storage.To overcome the above problems,in this work,two polymers were synthesized via free radical polymerization.The two polymers and their blends were used as viscosity reducers to improve the flowability of high-wax crude oil.The copolymer P1 was synthesized by using nonyl acrylate and vinyl acetate as monomers,while the copolymer P2 was synthesized by using dodecyl acrylate and methyl methacrylate as monomers.The effects of polymer amount on the viscosity parameters,pour point and shear stability index of high-wax crude oil were studied,in which the two copolymers and their blend P3 acted as pour point depressants.The experimental results showed that P1,P2,and P3 all had significant pour point depression and drag reduction performance,among which P3 was the best.At a dosage of 4%,P3 could reduce the pour point of the crude oil sample from 28.3℃to 4.4℃and the viscosity could be maximally reduced by 75.293%.The results of shear stability analysis showed that,the adverse effects of high-speed shear on freezing point and viscosity reduction were not very significant in presence of P3(The freezing point was merely raised by 2.1℃after high-speed shear and the viscosity reduction rate was merely decreased by 5.76%after high-speed shear),and the PVL and PSSI values were small at all concentrations,indicative of good shear stability.Therefore,P3 was expected as an efficient pour point depressant and drag reducing agent which could effectively reduce the viscosity of high-wax crude oil and reduce the drag during transportation,and thus reduce the energy consumption during pipeline transportation.关键词
聚合物共混物/降凝减阻/流动性/节能减排Key words
polymer blend/pour point depressant and drag reducer/fluidity/energy conservation and emission reduction分类
石油、天然气工程引用本文复制引用
宋京..高含蜡原油聚合物共混物高效降凝剂的合成及性能研究[J].日用化学工业（中英文）,2025,55(3):322-327,6.基金项目
中国石油研究与技术开发项目(2023DJ6604) （2023DJ6604）
