两性离子水凝胶的制备及性能研究  

Preparation and properties of zwitterionic hydrogel

作　　者：王雷[1] 李亮[1] 张潇 王建海[1] 任波[1] 伍亚军[1] 马淑芬[1] 刘广燕[1] 郭娜[1] WANG Lei;LI Liang;ZHANG Xiao;WANG Jian-hai;REN Bo;WU Ya-jun;MA Shu-fen;LIU Guang-yan;GUO Na(Petroleum Engineering Technology Research Institute of SINOPEC Northwest Oilfield Company,Urumqi 830011,China)

机构地区：[1]中国石化西北油田分公司石油工程技术研究院,新疆乌鲁木齐830011

出　　处：《应用化工》2019年第4期780-784,788,共6页Applied Chemical Industry

基　　金：国家重大专项资助(2016ZX05014-005-001)

摘　　要：研制了一种羧基化石墨烯GO和两性离子基团修饰的两性水凝胶(ZMPA),在不同温度下,利用水和不同盐类对ZMPA的吸水溶胀能力进行了系统研究。通过缔合作用而形成的两性离子水凝胶颗粒可在高温度和高盐度条件下,其溶胀能力将突然增加,这说明ZMPA对温度和盐度有着较为敏感的适应性。ZMPA在80℃时具有优异的封堵性能,封堵效率高达93.8%,而20℃时的效率仅为33.3%。羧基化石墨烯GO的加入可提高ZMPA的力学稳定性,同时可使ZMPA在外界环境pH发生改变时更好的做出响应。A carboxylated graphene GO and zwitterionic group modified amphiphilic hydrogel (ZMPA) was successfully developed.The water absorption and swelling ability of ZMPA was systematically studied at different temperatures using water and different salts.Zonionic ion hydrogel particles formed by association can suddenly increase their swelling ability under high temperature and high salinity conditions,indicating that ZMPA is more sensitive to temperature and salinity.The plugging simulation test shows that ZMPA has excellent sealing performance at 80 ℃,the plugging efficiency is as high as 93.8%,and the efficiency at 20 ℃ is only 33.3%.The addition of carboxylated graphene GO can improve the mechanical stability of ZMPA.At the same time,the addition of GO can make ZMPA better in the change of the external environment pH.

关 键 词：水凝胶 高温高盐度 溶胀性 力学稳定性 封堵性能 

分 类 号：TQ427.26[化学工程] TE254[石油与天然气工程—油气井工程]