一种超支化疏水缔合聚合物的制备与性能评价  

Preparation and performance evaluation of an hyperbranched hydrophobic associating polymer

作　　者：蒲万芬[1,2] 闫召鹏 刘锐[1,2] 尚晓培 刘哲[3] 

机构地区：[1]西南石油大学石油与天然气工程学院,四川成都610500 [2]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 [3]西安石油大学油气藏数值模拟实验室,陕西西安710065

出　　处：《化学研究与应用》2015年第5期589-594,共6页Chemical Research and Application

基　　金：国家科技重大专项(2011ZX05049-004-004-008)资助

摘　　要：首先制备了疏水单体2-丙烯酰胺基十四烷磺酸,在此基础上又以改性Si O2功能单体为反应核制备了超支化疏水缔合聚合物(HBPAM),结构经红外光谱(FTIR)和核磁共振氢谱(1H NMR)表征证实。HBPAM在低浓度时主要是分子内缔合,表观黏度低,随着浓度的增加,分子内缔合逐渐变为分子间缔合,又因其独特的三维立体网状结构,溶液黏度显著增加。与梳形KYPAM相比,HBPAM在耐温抗盐及抗剪切方面有较高的优势:升温到85℃时黏度保留率为62.2%;100000mg·L-1Na Cl、150000 mg·L-1Na Cl、500 mg·L-1Mg Cl2、1000 mg·L-1Mg Cl2、500 mg·L-1Ca Cl2、1000 mg·L-1Ca Cl2时的黏度保留率分别为233.0%、132.9%、64.4%、26.1%、66.2%、15.7%;3400rpm/min剪切30s后HBPAM的黏度保留率为69.8%,比KYPAM高10.9%。在60℃烘箱中的30d老化实验证明,HBPAM比KYPAM有明显抗老化能力,尤其是在高矿化度条件下优势更明显。Firstly,2-acrylamidotetradecanesulfonic acid and a hyperbranched hydrophobic associating polymer（ HBPAM） with modi-fied SiO2 functional monomer were prepared successively,their structures were confirmed by Fourier transform-infrared（ FTIR） spec-troscopy and H nuclear magnetic resonance（1HNMR）spectroscopy,respectively. At low concentration,the intra-molecular associa-tion is occurred,reducing the apparent viscosity. With increasing of polymer concentration,intra-molecular asociation changed and intermolecular association is dominated,as well as its unique three-dimensional network structure,which enhance viscosity efficien-cy. Compared to KYPAM,HBPAM has good performance under conditions of high temperature and high salt. When the temperature rised to 85℃,the viscosity retention rate of HBPAM was 62. 2%higher than that of KYPAM;similarly,the viscosity retention rate was 233. 0%,132. 9%,64. 4%,26. 1%,66. 2%,15. 7%higher than that of KYPAM in 100000mg·L-1 NaCl,150000mg·L-1 NaCl,500mg·L-1 MgCl2 ,1000mg·L-1 MgCl2 ,500mg·L-1 CaCl2 ,1000mg·L-1 CaCl2 brine,respectively;after suffering from super high shear force（3400rpm/min）for a period of 30s,the viscosity retention rate was 69. 8%,10. 9%higher than KYPAM. The vis-cosity of HBPAM was much better than KYPAM after encountering 30 days aging at the temperature oh 60℃.

关 键 词：耐温抗盐 抗剪切 超支化疏水缔合聚合物 高温高盐油藏 三次采油 

分 类 号：O632.52[理学—高分子化学]