文献类型：期刊文献

英文题名：Rheological properties and viscosity reduction of South China Sea crude oil

作者：Sun, Hui[1];Lei, Xingxing[1];Shen, Benxian[1];Zhang, Huiran[1];Liu, Jichang[1];Li, Gengnan[2];Wu, Di[2,3,4]

机构：[1]East China Univ Sci & Technol, Petr Proc Res Ctr, Shanghai 200237, Peoples R China;[2]Washington State Univ, Gene & Linda Voiland Sch Chem Engn & Bioengn, Pullman, WA 99163 USA;[3]Washington State Univ, Dept Chem, Pullman, WA 99163 USA;[4]Washington State Univ, Mat Sci & Engn, Pullman, WA 99163 USA

年份：2018

卷号：27

期号：4

起止页码：1198

外文期刊名：JOURNAL OF ENERGY CHEMISTRY

收录：;EI(收录号：20173504084334);WOS:【SCI-EXPANDED(收录号:WOS:000434254500021)】；

基金：This work is financially supported by the Training Program of the Major Research Plan of the National Natural Science Foundation of China (grant no. 91634112), the Natural Science Foundation of Shanghai (grant no. 16ZR1408100), the Fundamental Research Funds for the Central Universities of China (grant no. 22A201514010) and the Open Project of State Key Laboratory of Chemical Engineering (SKL-ChE-16C01). D.W. acknowledges the institutional funds from the Gene and Linda Voiland School of Chemical Engineering and Bioengineering at Washington State University.

语种：英文

外文关键词：South China Sea crude oil; Characterization; Rheological properties; Viscosity reduction

摘要：The rheological properties of South China Sea (SCS) crude oil were studied. A group of synthetic long-chain polymers, including octadecyl acrylate-maleic anhydride bidodecyl amide copolymer (VR-D), octadecyl acrylate-maleic anhydride bioctadecyl amide copolymer (VR-O) and octadecyl acrylate-maleic anhydride phenly amide copolymer (VR-A), were employed to serve as viscosity reducers (VRs). Their performance was evaluated by both experimental and computational methodologies. The results suggest that the SCS crude oil has low wax content yet high resin and asphaltene contents, which lead to high viscosity through formation of association structures. Additionally, the SCS crude oil appears to be a pseudoplastic fluid showing linear shear stress-shear rate dependence at low temperature. Interestingly, it gradually evolves into a Newtonian fluid with exponential relationship between shear stress and shear rate at higher temperature. Synthetic VRs demonstrate desirable and effective performance on improvement of the rheological properties of SCS crude oil. Upon the introduction of 1000 ppm VR-O, which is synthesized by using octadecylamine in the aminolysis reaction, the viscosity of SCS crude oil is decreased by 44.2% at 15 degrees C and 40.2% at 40 degrees C. The computational study suggests significant energy level increase and shear stress decrease for VR-containing crude oil systems. (C) 2017 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.