摘要
以丙烯酰胺、2-丙烯酰胺-2-甲基丙磺酸和芥酸酰胺羟丙基磺基甜菜碱为原料,采用水分散聚合方式合成出水包水型疏水缔合聚丙烯酰胺增稠剂,通过FTIR和TG对增稠剂的结构及热解质量进行了测试。分析了OWPAM乳液增稠剂的基本性能及水溶液的微观和宏观性能,结果表明,在单体芥酸CAB用量为4.0%时,乳液的产率、平均粒径、表观黏度和稳定性达到最优,黏均分子量为2.43×10~6g/mol;OWPAM乳液的临界胶束缔合浓度(CAC)值为0.32%,当浓度大于CAC值后水溶液体系内的缔合形式以分子间缔合为主,OWPAM乳液在0.1%、流速10m/s时减阻率为72%。助黏剂TR-1质量分数为1.0%时可将0.5%水溶液黏度增加至160mPa·s,复配成的压裂液具有较好耐温耐剪切性、黏弹性和悬砂性,在APS质量分数为0.05%时,测试时间为2h压裂液可以完全破胶,能够达到压裂液的使用标准。
a water-in-water hydrophobically associating polyacrylamide was synthesized using acrylamide,2-acrylamido-2-methyl propane sulfonic acid and erucylamide propyl hydroxy sulfobetaine as raw materials by dispersion polymerization in salt solution.The obtained polymer was characterizedby means of FTIR and TG.The basic properties,micro-properties,and macroscopic properties of the OWPAM emulsion were also investigated.The results showed that the obtained emulsion had high yields,better averaged particle size,and better stability with erucic acid CAB of4.0%viscosity average molecular weight of2.43×106g/mol,and OWPAM emusion critical associating concentration(CAC)0.32%.At room temperature,flow velocity of10.0m/s and concentration of0.10%,the OWPAM solution drag agent was72%,The viscosity of0.5%OWPAM solution could be increased up to160mPa·s with TR-1concentration of1.0%.The fracturing fluid had good heat resistance,shear resistance,viscoelastic,and suspended sand.The new fracturing fluid could completely break in2h when APS concentration was0.05%.
作者
张锋三
沈一丁
吴金桥
原敏
孙晓
ZHANG Fengsan;SHEN Yiding;WU Jinqiao;YUAN Min;SUN Xiao(Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry,College of Chemistry and Chemical Engineering,Shaanxi University of Science & Technology,Xi'an 710021,Shaanxi,China;Research Insititute of Yanchang Petroleum (Group) Co.,Ltd.,Xi'an 710075,Shaanxi,China)
出处
《化工进展》
EI
CAS
CSCD
北大核心
2017年第8期3058-3065,共8页
Chemical Industry and Engineering Progress
基金
国家科技重大专项项目(2017ZX05039004、ycsy2017QNJJB-08)
关键词
分散聚合
聚丙烯酰胺
疏水缔合
体积压裂
压裂液
dispersion polymerization
polyacrylamide
hydrophobic association
volume fracturing
fracturing fluid
