文献类型：期刊文献

英文题名：Synthesis of comb-type copolymers with various pendants and their effect on the complex rheological behaviors of waxy oils

作者：Wang, Tongshuai[1];Xu, Jun[1];Wang, Minglei[1];Wei, Xiaoming[2];Shen, Muxian[1];Huang, Jing[1];Zhang, Rui[1];Li, Li[1];Guo, Xuhong[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Petrochina Liaohe Oilfield Co, Panjin 124010, Peoples R China

年份：2015

卷号：132

期号：11

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20145100340218);WOS:【SCI-EXPANDED(收录号:WOS:000346359400037)】；

基金：Financial support by National Natural Science Foundation of China (51003028, 21004021) and the Fundamental Research Funds for the Central Universities are gratefully acknowledged. The authors also thank Petrochina Liaohe Oilfield Company for affording oil samples and technological supports.

语种：英文

外文关键词：copolymers; oil and gas; rheology

摘要：To improve the flowability of waxy crude oil containing a high concentration of asphaltenes (AS), novel comb-type copolymers of poly(maleic acid polyethylene glycol ester-co--octadecene) (PMAC) and poly(maleic acid aniline amide-co--octadecene) (AMAC) with various grafting ratios (R-g) of PEG/aniline to maleic anhydride are synthesized. Model oils containing wax mixtures and AS are prepared to explore the effect of asphaltene concentration and the copolymers on the yield stress. The influence of the copolymers on the wax appearance temperature (WAT) of Liaohe high waxy oil is examined by rheological and microscopic methods. Experimental flow curves of shear stress as a function of shear rate are fitted following the Casson model to interpret the rheological properties of gelled waxy crude oil in the presence of AMACs, PMACs, and MAC. Compared with MAC, PMACs, and AMACs are more efficient in reducing the yield stress of both model oil and crude oil, which indicates a better flowability. It is found that PMAC1.0 and AMAC1.0 with a medium R-g can balance the interaction of copolymers with waxes and AS and reduce the yield stress much more than others. Between them, AMAC1.0 that possesses aromatic pendants is better than PMAC1.0, which only has polar pendants. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41660.