摘要
丙烯酰胺共聚物微球是三次采油最理想的调驱剂之一,但低渗透油藏地质条件复杂,其在地层的作用机制并不清晰。近年来,荧光微球由于具有其高灵敏度和低成本等优点,在采油领域得到广泛应用。合成了荧光单体8-烯丙氧基-1,3,6-芘三磺酸三钠,然后通过反相微乳液聚合法将其与丙烯酰胺(AM)、2-丙烯酰胺-2-甲基丙磺酸(AMPS)共聚合成了丙烯酰胺共聚物荧光微球。采用红外光谱、激光粒度仪对共聚物荧光微球进行了结构表征,采用荧光光谱测试研究了共聚物荧光微球的荧光性能。结果表明,共聚物荧光微球的平均粒径为53.76 nm,粒径分布较窄。共聚物荧光微球的荧光强度随浓度的增大而不断增强,具有良好的线性关系,线性相关系数为0.999。共聚物荧光微球在不同温度、pH值、金属离子和静置时间下都具有稳定的荧光性能,可作为潜在的油田荧光示踪剂。
Polyacrylamide microspheres are one of the most ideal oil-displacing agents for tertiary oil recovery.But the geological conditions of low-permeability reservoirs are complex,and their mechanism of oil-displacing in the reservoirs is not clear.In recent years,due to the high sensitivity and low cost of fluorescent microspheres,they have been widely used in the oil recovery.In this paper,the fluorescent monomer trisodium 8-allyloxy-1,3,6-pyrenetrisulfonate was synthesized and copolymerized with acrylamide and 2-acrylamido-2-methylpropane sulfonic acid by reverse-phase microemulsion method to obtain fluorescent polyacrylamide microspheres.Infrared spectrometer and laser particle size instrumentation were used to study the structure of the fluorescent microspheres,and fluorescence spectroscopy was used to study the fluorescence properties of the fluorescent microspheres.The experimental results showed that the average particle size of the fluorescent microspheres was 53.76 nm with a narrow particle size distribution.With the increase of the concentration of the microspheres,the fluorescence intensity of fluorescent microspheres increased,showing a good linear relationship.And the linear correlation coefficient was 0.999.Fluorescent microspheres have stable fluorescence performance under different temperatures,pH,metal ions and static time,which can be used as a potential reservoirs fluorescent tracer.
作者
石道涵
李鹏
陈义鹏
曹荣荣
刘宇星
吕伟
刘宗保
张海
李爱辉
刘晓非
Shi Daohan;Li Peng;Chen Yipeng;Cao Rongrong;Liu Yuxing;LüWei;Liu Zongbao;Zhang Hai;Li Aihui;Liu Xiaofei(PetroChina Changqing Oilfield Company,Xi’an 710018,China;Xi’an Changqing Chemical Group Limited Company,Xi’an 710018,China;School of Materials Science and Engineering,Tianjin University,Tianjin 300072,China;Oil and Gas Technology Research Institute,Petro China Changqing Oilfield Company,Xi’an 710018,China;National Engineering Laboratory for Exploration and Development of Low Permeability Oil and Gas Fields,Xi’an 710018,China)
出处
《化学工业与工程》
CAS
CSCD
北大核心
2021年第5期53-58,共6页
Chemical Industry and Engineering
