文章摘要
芥酸酰胺丙基二甲基叔胺改性纤维素溶液的 流变性能与交联性能
Rheological Properties of Erucamidopropyl Dimethylamine Modified Carboxymethyl HydroxyethylCellulose Solutions
  
DOI:
中文关键词: 羧甲基羟乙基纤维素  芥酸酰胺丙基二甲基叔胺  疏水改性  流变性  压裂液
英文关键词: carboxymethyl hydroxyethyl cellulose  erucamidopropyl dimethylamine  hydrophobic modification  rheology  fracturing fluid
基金项目:国家科技重大专项“储层改造关键流体研究”(项目编号2017ZX05023003)
作者单位
樊 悦1,金 浩1,方 波1,卢拥军2,邱晓惠2,孙 瑞1 1. 华东理工大学化工学院上海 2002372. 中国石油勘探开发研究院廊坊分院河北 廊坊 065007 
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中文摘要:
      为了改善纤维素溶液的增稠能力和交联性能,合成了一种新型疏水醚化改性剂(3-氯-2-羟丙基芥酸酰胺醋酸铵),并采用该改性剂对羧甲基羟乙基纤维素(CMHEC)进行疏水改性,首次制得了芥酸酰胺丙基二甲基叔胺疏水改性纤维素(ED-CMHEC),研究了CMHEC和ED-CMHEC溶液的流变性能(表观黏度、流动曲线、触变性和黏弹性)和交联性能。研究结果表明,改性后ED-CMHEC溶液的表观黏度得到显著提升并表现出更显著的触变性与黏弹性。质量分数0.3%的 CMHEC和ED-CMHEC 溶液在30℃、170 s-1的表观黏度分别为18 mPa·s和71mPa·s,后者较前者提高了2.94倍。不同质量分数(0.3%~0.5%)的CMHEC和ED-CMHEC溶液均表现出剪切变稀性质,其流动曲线可用Cross模型进行描述。有机锆交联剂FAC-201加量为0.2%时,质量分数0.3% ED-CMH EC溶液交联形成凝胶的黏度是改性前的2.4倍,表现出更强的交联性能。图9表4参22
英文摘要:
      To improve the thickening ability and crosslinkingperformance of cellulose,widen its application in fracturing fluid field,a new kind of hydrophobic etherifying agent(3-chloro -2-hydroxypropylerucylamideammonium acetate was prepared to modify carboxymethyl hydroxyethyl cellulose (CMHEC). Hydrophobic erucamidopropyl dimethylamine carboxymethyl hydroxyethyl cellulose (ED-CMHEC) was first prepared. The rheological and crosslinking experiments of CMHEC and ED-CMHEC were carried out. The results showed that ED-CMHEC solutions exhibited higher viscosities,more apparent thixotropy and viscoelasticity,compared to CMHEC solution. At the mass fraction of 0.3% ,the viscosity of CMHEC and ED-CMHEC solutions at the temperature of 30℃ and at the shearing rate of 170 s-1were 18.0 mPa·s and 71 mPa·s,respectively. The shear thinning behaviors of CMHEC and ED-CMHEC solutions at different concentrations could be well described by Cross model. Under the same crosslinking conditions that the dosage of zirconium organic crosslinker was 0.2%,the viscosity of gel formed by 0.3% ED-CMHEC solution was 2.4 times than that by 0.3% CMHEC solution,which indicated that ED-CMHEC had a stronger crosslinking performance.
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