Syntheses and properties of associative acrylamide copolymers containing short hydrophobic chains used in a friction reducer for slick-water fracturing

作     者：Ya-Xing Dai Xian-Li Zhang Si-Yuan Liu Feng-Run-Ze Zhang Yi-Xi Zhang Yu-Tong Sang Jing-Xi Zheng Zhao-Sheng Liu Peng Zhang Ya-Xing Dai;Xian-Li Zhang;Si-Yuan Liu;Feng-Run-Ze Zhang;Yi-Xi Zhang;Yu-Tong Sang;Jing-Xi Zheng;Zhao-Sheng Liu;Peng Zhang

作者机构：College of Chemistry and Chemical EngineeringChongqing University of Science and TechnologyChongqing401331China College of Ecology and EnvironmentChongqing Resources and Environmental Protection of UniversityChongqing401331China China China Property Project Department of DezhouMining Property Service CenterShengli Oilfield Company of SinopecDezhou253000ShandongChina 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2024年第21卷第3期

页      面：1889-1901页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 082002[工学-油气田开发工程] 

基　　金：supported by the National Natural Science Foundation of China(Project Nos.51774062 and 52274032) Scientific and Technological Key Research Program of Chongqing Municipal Education Commission(KJZD-K201901502) General Project of Chongqing Natural Science Foundation(CSTB2022NSCQMSX0349) Science and Technology Research Program of Chongqing Municipal Education Commission(KJQN202313101) 

主　　题：Shale gas Slick water Drag reducer Modified monomer Copolymerization 

摘      要：Two allyldimethylalkyl quaternary ammonium salt(AQAS)monomers,N,N-dimethylallylphenylpropylammonium bromide(AQAS1)and N,N-dimethylallylnonylammonium bromide(AQAS2),were synthesized and used to prepare modified polyacrylamide *** new drag reducers were synthesized from acrylamide(AM),sodium acrylate(Na AA)and a cationic modified monomer(AQAS1 or AQAS2)via aqueous solution polymerization,and the copolymers were named P(AM/Na AA/AQAS1)and P(AM/Na AA/AQAS2),*** structures of the drag reduction agents were confirmed by IR and1H NMR *** molecular weight(Mw)of P(AM/Na AA/AQAS1)was 1.79×10^(6)g/*** the copolymer concentration was 1000 mg/L and the flow rate was 45 L/min,in fresh water the highest drag reduction rate was 75.8%,in 10,000 mg/L Na Cl solution the drag reduction rate decreased to 72.9%.The molecular weight of P(AM/Na AA/AQAS2)was 3.17×10^(6)g/*** the copolymer concentration was500 mg/L and the flow rate was 45 L/min,the drag reduction rate reached 75.2%,and in 10,000 mg/L Na Cl solution the drag reduction rate was 73.3%,decreased by approximately 1.9%.The drag reduction rate for partially hydrolyzed polyacrylamide(HPAM)was also investigated,and the results showed that the drag reduction rates for 500 and 1000 mg/L HPAM solutions were merely 43.2%and 49.0%in brine,*** with HPAM,both of the above copolymers presented better drag reduction capacities.