驱油用水溶性AM-AA-NVP-DAMA四元共聚物的合成及性能  

Synthesis and Performance of a Water-soluble AM-AA-NVP-DAMA Tetra-copolymer for Enhanced Oil Recovery

作　　者：覃孝平[1] 叶仲斌[1,2] 赖南君[1,2] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [2]西南石油大学化学化工学院,四川成都610500

出　　处：《精细化工》2013年第12期1423-1428,1440,共7页Fine Chemicals

基　　金：油气藏地质及开发工程国家重点实验室开放基金项目(PLN1212);教育部高等学校博士学科点专项科研基金项目(20125121120011);四川省科技创新苗子工程培育项目(20132060)~~

摘　　要：由1,3-丙二胺和马来酸酐制备的功能单体(DAMA)与丙烯酰胺(AM)、丙烯酸(AA)、N-乙烯基吡咯烷酮(NVP)共聚制备出了一种水溶性AM-AA-NVP-DAMA四元共聚物。共聚反应的条件为:m(AM)∶m(AA)=3∶2,引发剂质量分数0.5%,反应温度40℃,反应时间8 h,pH=7.0。利用红外光谱(IR)、核磁(1HNMR)以及扫描电镜(SEM)对该共聚物进行了表征。性能研究表明,该共聚物在95℃下的黏度保留率比部分水解聚丙烯酰胺(HPAM)高16.2%;在质量分数1.8%NaCl条件下的黏度保留率比HPAM高8.7%;在质量分数0.09%CaCl2条件下的黏度保留率比HPAM高9.4%;经过500 s-1剪切5 min后的黏度保留率比HPAM高16.3%;60℃下质量分数0.2%共聚物溶液提高的采收率比HPAM高5.07%。A functional monomer （DAMA） was prepared from 1, 3-diaminopropane and maleic anhydride, and then a water-soluble AM-AA-NVP-DAMA tetra-copolymer was polymerized by free radical polymerization using DAMA, N-vinyl-2-pyrrolidone （ NVP）, acrylamide （ AM ）, and acrylic acid （AA） as raw materials. The synthesis conditions were as follows ： m （AM）：m （AA） was 3：2, initiator was 0. 5 %, temperature was 40 ℃, reaction time was 8 h, and pH was 7.0. The AM-AA-NVP-DAMA copolymer was characterized by means of infrared spectroscopy （IR）, 1HNMR, and scanning electron microscope（SEM）. It was found that the viscosity retention rate of AM-AA-NVP-DAMA was 16. 2% higher than that of partially hydrolyzed polyacrylamide （HPAM） at 95 ℃, the viscosity retention rate of this copolymer in 1.8% NaCl brine was 8.7% higher than that of HPAM ,the viscosity retention rate of this copolymer in 0. 09% CaCl2 brine was 9.4% higher than that of HPAM ,and the viscosity retention rate of this copolymer sheared at 500 s-1 for 5 min was 16. 3% higher than that of HPAM. It was also found that the enhanced oil recovery（EOR） of 0.2% copolymer solutions was 5.07% higher than that of HPAM at 60 ℃.

关 键 词：提高采收率 抗剪切 耐温 马来酸酐 N-乙烯基吡咯烷酮 油田化学品与油品添加剂 

分 类 号：TE357.461[石油与天然气工程—油气田开发工程]