摘要
以丙烯酰胺(AM)、丙烯酸(AA)和N-烯丙基吩噻嗪(NAP)和N-烯丙基油酰胺(CON)为单体,以(NH4)2S2O8-NaHSO3为引发体系,制备了一种新型驱油用四元共聚物AM/AA/NAP/CON。该共聚物具有良好的增黏性(2 000mg/L,表观黏度711.4mPa·s)、抗剪切性(1 000s-1,黏度保留值为58.5mPa·s)、耐温性(120℃,黏度保留率为34.6%)、抗盐性(NaCl 20 000mg/L、CaCl22 000mg/L或MgCl22 000mg/L时,黏度保留率分别为17.8%,15.4%或13.5%)。室内应用中,2 000mg/L的AM/AA/NAP/CON模拟地层水溶液可建立阻力系数和残余阻力系数分别为13.0和4.5,可提高模拟原油采收率达14.6%。
A novel acrylamide copolymer AM/AA/NAP/CON was synthesized as enhanced oil recovery(EOR) chemical using acrylamide (AM), acrylic acid (AA), N-allylphenothiazine (NAP) and N-allyl base oil amides (CON) via oxidation-reduction initiator system [(NH4)2 S2O8-NaHSO3 ]. The results indicated that the copolymer showed remarkable thickening property (2 000 mg/L, apparent viscosi- ty: 711.4 mPa · s), anti-shear ability (1 000 s^-1 , viscosity retention 58.5 mPa ~ s), temperature re- sistance (120℃, viscosity retention rate. 34.6%), and salt tolerance abilities (20 000 mg/L NaC1, 2 000 mg/L CaC12 or 2 000 mg/L MgC12, viscosity retention rate: 17.8%, 15.4% or 13.5%). Re- sistance factor of 13.0 and residual resistance factor of 4.5 were got in indoor experiment with 2 000 mg/L simulated AM/AA/NAP/CON stratum water. Enhanced oil recovery rate could be increased by 14.6%.
出处
《精细石油化工》
CAS
CSCD
北大核心
2015年第3期28-33,共6页
Speciality Petrochemicals
基金
四川省省属高校科研创新团队建设计划项目(13TD0025)
西南石油大学优秀人才支持计划(2014XJZ759)
西南石油大学开放实验重点项目(KSZ14074)
关键词
丙烯酰胺共聚物
提高采收率
N-烯丙基吩噻嗪
耐温性
增黏性
acrylamide copolymer
enhanced oil recovery
N-allylphenothiazine~ temperature resist-ance
thickening property