AM/NVP/N-MAM三元共聚物驱油剂的合成及性能研究  

Synthesis and performance evaluation for the P( AM /NVP/N-MAM) as enhanced oil recovery chemical

作　　者：苟绍华[1,2] 罗珊[2] 马永涛[2] 何杨[2] 夏鸿[2] 陈斌[2] 

机构地区：[1]油气藏地质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：《应用化工》2014年第8期1399-1402,1407,共5页Applied Chemical Industry

基　　金：四川省科技支撑计划项目(2012FZ0130);四川省教育厅创新团队项目资助(13TD0025)

摘　　要：以丙烯酰胺(AM)、N-乙烯基吡咯烷酮(NVP)、N-羟甲基丙烯酰胺(N-MAM)为单体,过硫酸铵-亚硫酸氢钠[(NH4)2S2O8-NaHSO3]为氧化还原引发剂,合成了一种水溶性共聚物AM/NVP/N-MAM。确定了最佳反应条件:m(AM)∶m(NVP)∶m(N-MAM)=80∶9∶2.5,pH为9,温度60℃,引发剂加量0.3%。对AM/NVP/N-MAM共聚物进行了红外结构表征,确立了聚合物的结构。与部分水解聚丙烯酰胺相比,该聚合物具有较好的抗剪切耐温性(1 000 s-1:其粘度保留率达17.52%;120℃:其粘度保留率达22.6%)。当NaCl、CaCl2、MgCl2浓度分别为12 000,1 200,1 200 mg/L时,该聚合物粘度保留率分别可达到25.34%,22.21%,23.89%。此外,相对于水驱,该聚合物可提高采收率12.63%(聚合物浓度1 750 mg/L)。A novel water-soluble copolymer of acrylamide（ AM）,N-vinypyrrolidone（ NVP）and N-meth-ylolacrylamide（ N-MAM）was synthesized by free radical polymerization in the presence of（ NH4 ）2 S2 O8-NaHSO3 as initiator. The optimized conditions for copolymerization were built as follows：m（ AM）： m （NVP）：m（N-MAM）=80：9：2. 5,pH=9,temperature 60 ℃,concentration of initiator 0. 3%. The struc-ture of the copolymer was characterized by IR. Compared with partially hydrolyzed polyacyamide （ HPAM）,the copolymer showed remarkable anti-shear ability and temperature resistance（ 1 000 s-1 , viscosity retention rate 17 . 52%;120℃,viscosity retention rate 22 . 6%）. The AM/NVP/N-MAM copoly-mer solution viscosity retention rate were respectively about 25 . 34%,22 . 21%,23 . 89% when the con-centration of NaCl,CaCl2 ,MgCl2 in the 12 000,1 200,1 200 mg/L. Core flooding experiments revealed that the EOR of this copolymer could be up to 12. 63%（polymer concentration was 1 750 mg/L）.

关 键 词：三元共聚物 N-乙烯基吡咯烷酮 N-羟甲基丙烯酰胺 耐温 抗盐 

分 类 号：O633.2[理学—高分子化学]