海水基速溶耐温聚合物的制备与性能  

Preparation and properties of seawater-based instant and temperature-resistant polymer

作　　者：蔺旭杰 王磊[1,2] 李小玲 赖小娟[1,2] 党志强[1,2] 李朋 LIN Xujie;WANG Lei;LI Xiaoling;LAI Xiaojuan;DANG Zhiqiang;LI Peng(Key Laboratory of Chemical Additives for China National Light Industry,College of Chemistry and Chemical Engineering,Shaanxi University of Science&Technology,Xi'an 710021,Shaanxi,China;Shaanxi Agricultural Products Processing Technology Research Institute,Xi'an 710021,Shaanxi,China;Research Institute of Petroleum Technology,Changqing Oilfield Company,Xi'an 710018,Shaanxi,China)

机构地区：[1]陕西科技大学化学与化工学院轻化工助剂化学与技术教育部重点实验室,陕西西安710021 [2]陕西农产品加工技术研究院,陕西西安710021 [3]长庆油田分公司油气工艺研究院,陕西西安710018

出　　处：《精细化工》2025年第3期660-667,共8页Fine Chemicals

基　　金：陕西省外国专家服务计划项目(2023WGZJ-ZD-03);陕西省重点研发计划项目(2023-YBGY-307,2024GX-YBXM-393);陕西省教育厅产业化项目(23JC008);西安市科技计划项目(22GXFW0014)。

摘　　要：以丙烯酰胺(AM)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、4-丙烯酰吗啉(ACMO)和非离子疏水单体十八烷基聚氧乙烯醚甲基丙烯酸酯(OEMA)为单体,通过水溶液聚合法制备了海水基速溶耐温聚合物(PAOAA)。采用FTIR、^(1)HNMR和SEM对其结构和形貌进行了表征;通过增稠能力和流变性能实验对PAOAA作为压裂液进行了性能测试。结果表明,PAOAA可在海水中2.0 min内溶解,质量分数0.8%的PAOAA溶液表观黏度为108 mPa·s,并表现出良好的耐温耐剪切性能;在100、170 s–1剪切速率下终点表观黏度差别不大,不同温度下的终点表观黏度均>50 mPa·s。单体AMPS中含有的磺酸基团屏蔽了海水中的盐离子,提高了PAOAA的水溶性;杂环ACMO提高了PAOAA分子链的刚性;非离子疏水单体OEMA使PAOAA表现出缔合微区,提高了PAOAA的耐温性能,在三者的协同作用下,PAOAA表现出速溶耐温性能。Seawater-based instant and temperature-resistant polymer(PAOAA)was prepared from aqueous polymerization of acrylamide(AM),2-acrylamido-2-methylpropanesulfonic acid(AMPS),4-acryloylmorpholine(ACMO),and nonionic hydrophobic monomer octadecyl polyoxyethylene ether methacrylate(OEMA),and characterized by FTIR,^(1)HNMR,and SEM.The performance of PAOAA as a fracturing fluid was evaluated through thickening and rheological experiments.The results indicated that PAOAA could be dissolved in seawater within 2.0 min.The apparent viscosity of PAOAA solution with a mass fraction of 0.8%was 108 mPa·s,demonstrating excellent temperature and shear resistance.There was little difference in the endpoint apparent viscosity at 100 and 170 s^(–1)shear rates,both>50 mPa·s at different temperatures.The sulfonic acid groups in monomer AMPS shielded salt ions in seawater,improving the water solubility of PAOAA.Heterocyclic ACMO increased the rigidity of PAOAA molecular chains.The nonionic hydrophobic monomer OEMA led to formation of associative microdomains in PAOAA,improving its temperature resistance.The combined effects of these monomers resulted in the instantaneous and temperature-resistant properties of PAOAA.

关 键 词：海水基压裂液 速溶性 耐高温 耐剪切 疏水缔合 油田化学品 

分 类 号：TE39[石油与天然气工程—油气田开发工程]