水溶性AM/AA/AOCA/DANA四元共聚物驱油剂的合成及性能研究  

Synthesis and evaluation of the P(AM/AA/AOCA/DANA) as enhanced oil recovery chemical

作　　者：苟绍华[1,2] 刘曼[2] 叶仲斌[1,2] 周利华[2] 蒋文超[2] 

机构地区：[1]油气藏地质及开发工程国家重点实验室西南石油大学,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：《化学研究与应用》2014年第2期235-240,共6页Chemical Research and Application

基　　金：四川省科技支撑计划项目(2012FZ0130)资助;国家自然科学基金项目资助(51274172)资助

摘　　要：以丙烯酰胺(AM),丙烯酸(AA),N,N-二烯丙基-3-吡啶甲酰胺(DANA)和N-烯丙基辛酰胺(AOCA)为单体,采用过硫酸铵-亚硫酸氢钠((NH_4)_2S_2O_8-NaHSO_3)氧化还原引发体系合成了一种新型水溶性四元共聚物AM/AA/AOCA/DANA。确定了最佳反应条件:m(AM)/m(AA)=6:4、DANA=0.16 wt%,AOCA=0.15wt%、pH值7、引发剂0.3 wt%、单体浓度20 wt%、聚合温度50℃。通过红外、核磁氢谱、环境扫描电镜以及特性粘数对AM/AA/AOCA/DANA进行了结构表征。该聚合物较部分水解聚丙烯酰胺相比具有明显的抗温(100℃,粘度保留率:31.55%)抗剪切(1000 s^(-1),粘度保留率:32.31%)以及抗盐性能(11000 mg·L^(-1)NaCl,粘度保留率:41.77%;1500 mg·L^(-1)MgCl_2,粘度保留率:39.83%;1500 mg·L^(-1)CaCl_2,粘度保留率:34.81%;);驱油实验表明该聚合物较水驱相比能够提高原油采收率达12.04%。A novel water-soluble copolymer AM/AA/AOCA/DANA for enhanced oil recovery were prepared by acrylamide （AM）, acrylic acid（AA）,N-allyloctanamide（AOCA）and N,N-diallylisonicotinamide（DANA）via redox free-radical copolymerization.The effects of reactive conditions such as initiator concentration ,monomer ratio,reaction temperature,and pH on the copolymer were in-vestigated and the optimal conditions for the copolymerization were established.The obtained copolymer was characterized by means of IR, 1 H NMR,SEM and intrinsic viscosity test.The AM/AA/AOCA/DANA showed remarkable anti-shear ability（1000 s-1 ,vis-cosity retention rate：32.31%）,temperature resistance（100℃,viscosity retention rate：31.55%）,and salt tolerance（11000 mg？L-1 NaCl,viscosity retention rate：41.77%;1500 mg？L-1 MgCl2 ,viscosity retention rate：39.83%;1500 mg？L-1 CaCl2 ,viscosity reten-tion rate：34.81%）,and about 13.04%oil recovery could be enhanced by AM/AA/AOCA/DANA comparing with water-flooding.

关 键 词：三次采油 N N-二烯丙基-3-吡啶甲酰胺 N-烯丙基辛酰胺 四元聚合物 抗温 抗盐 

分 类 号：O633.22[理学—高分子化学]