一种耐高温酸液稠化剂的制备及性能  

Synthesis and properies of high-temperature resistant acid thickener

作　　者：李朋[1,2] 赖小娟 王磊[1,2] 李鹏 高进浩[1,2] 张小鑫 刘贵茹 LI Peng;LAI Xiaojuan;WANG Lei;LI Peng;GAO Jinhao;ZHANG Xiaoxin;LIU Guiru(Key Laboratory of Chemical Additives for China National Light Industry,Shaanxi University of Science&Technology,Xi'an 710021,Shaanxi,China;Shaanxi Agricultural Products Processing Technology Research Institute,Xi'an 710021,Shaanxi,China;Institute of Oilfield Chemicals,Xi'an Changqing Chemical Group Co.,Ltd.,Xi'an 710018,Shaanxi,China)

机构地区：[1]陕西科技大学中国轻工业轻化助剂重点实验室,陕西西安710021 [2]陕西农产品加工技术研究院,陕西西安710021究所 [3]西安长庆化工集团有限公司油田化学剂研究所,陕西西安710018

出　　处：《精细化工》2022年第2期411-416,432,共7页Fine Chemicals

基　　金：陕西省重点研发计划(2021GY-142);陕西省国际科技合作项目(2020KW-025);西安市科技计划项目(2020KJRC0004);陕西省教育厅项目(21JC005)。

摘　　要：以丙烯酰胺(AM)、甲基丙烯酰氧乙基三甲基氯化铵(DMC)为原料、是否引入十八烷基甲基丙烯酸酯(SMA)为区别,通过自由基聚合制备出两种稠化剂SY-1和SY-2。采用FTIR及芘探针法对其结构进行表征;通过热重分析仪、流变仪、酸岩反应旋转岩盘仪对其进行性能测试。结果表明:引入SMA单体后制得产物SY-2热稳定性得到改善;当SY-2添加量为质量分数为20%的盐酸溶液质量的0.8%时,溶液升温至180℃的终点黏度为50 mPa·s,继续剪切1 h后终点黏度为20.1 mPa·s,剪切稳定性为40.20%;在180℃、3 MPa下,SY-2型稠化酸的静态酸岩反应速率为8.94×10^(–5) g/(cm^(2)·s)。该体系与缓蚀剂、铁离子稳定剂配伍性良好,可用于深井高温酸化压裂。Two thickeners SY-1 and SY-2 were prepared by free radical polymerization using acrylamide(AM),methacryloyloxyethyl trimethyl ammonium chloride(DMC)as raw materials,with and without octadecyl methacrylate(SMA).Their structures were characterized by FTIR and pyrene probe method and their properties were tested by thermogravimetric analyzer,rheometer and acid-rock reaction rotary disc analyzer.The results showed that the thermal stability of SY-2 containing SMA was improved.When SY-2 was 0.8%of the mass of mass fraction 20%hydrochloric acid solution,the final viscosity of the solution was 50 mPa·s when heated to 180℃,that was 20.1 mPa·s after shearing for 1 h,and the shear stability was 40.20%.At 180℃and 3 MPa,the static acid-rock reaction rate of SY-2 was 8.94×10^(–5) g/(cm^(2)·s).The system had good compatibility with corrosion inhibitor and iron ion stabilizer and could be used for high temperature acid fracturing in deep wells.

关 键 词：疏水缔合 耐高温 耐剪切 稠化酸 油田化学品 

分 类 号：TE357[石油与天然气工程—油气田开发工程]