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Rheological properties of an ultra-high salt hydrophobic associated polymer as a fracturing fluid system

机译：超高盐疏水相关聚合物作为压裂流体系统的流变性能

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摘要

Herein, a novel ultra-high salt hydrophobic associated polymer, UUCPAM, was prepared using acrylamide, acrylic acid, 2-acrylamide-2-methyl propane sulfonic acid and the hydrophobic monomer UUC. Polymerization exothermic test results indicated that the increase in the hydrophobic monomer content led to an increase in the exothermic time, which is considerably conducive to the formation of hydrophobic structures. The scanning electron microscopy and transmission electron microscopy studies showed that the polymer had complex network structures and that this phenomenon was considerably obvious in NaCl solution. The fluorescence probe experiment verified that the critical association concentration of this polymer decreased with an increase in the hydrophobic monomer. Rheology studies indicated that the polymer had good temperature and shear resistance in NaCl solution. Moreover, the apparent viscosity of the polymer remained above 80 mPa s when 0.3 wt% UUCPAM was added at 170 s(-1) in 20000 mg L-1 NaCl solution at 90 degrees C. The storage modulus that indicated strong elasticity increased with an increase in the polymer concentration. Meanwhile, the number of hydrophobic micro-zones increased, thus forming dense network structures. Therefore, the polymer was found to have excellent salt resistance and extensive application prospects.
机译：这里，使用丙烯酰胺，丙烯酸，2-丙烯酰胺-2-甲基丙烷磺酸和疏水性单体UUC制备新型超高盐疏水相关聚合物UUCPAM。聚合放热试验结果表明，疏水性单体含量的增加导致放热时间的增加，这显着利用形成疏水结构。扫描电子显微镜和透射电子显微镜研究表明，聚合物具有复杂的网络结构，并且在NaCl溶液中这种现象具有显着明显。荧光探针实验证实，这种聚合物的临界关联浓度随着疏水性单体的增加而降低。流变研究表明，聚合物在NaCl溶液中具有良好的温度和抗剪切性。此外，当在20000mg L-1 NaCl溶液中在200℃下加入0.3wt％UUCPAM时，在20000mg L-1 NaCl溶液中加入0.3wt％UUCPAM，聚合物的表观粘度仍然在80MPas上以上。表明强弹性强的储存模量随增加聚合物浓度。同时，疏水性微区的数量增加，从而形成致密的网络结构。因此，发现聚合物具有优异的耐盐性和广泛的应用前景。

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  • 来源
    《RSC Advances》 |2019年第27期|共11页
  • 作者

    Gao Jinhao; Zhang Guanghua; Wang Lei; Ding Li; Shi Huaqiang; Lai Xiaojuan; Wen Xin; Ma Shaoyun; Huang Chuanqing;

  • 作者单位

    Shaanxi Univ Sci &

    Technol Shaanxi Key Lab Chem Addit Ind Xian 710021 Shaanxi Peoples R China;

    Shaanxi Univ Sci &

    Technol Shaanxi Key Lab Chem Addit Ind Xian 710021 Shaanxi Peoples R China;

    Shaanxi Univ Sci &

    Technol Shaanxi Key Lab Chem Addit Ind Xian 710021 Shaanxi Peoples R China;

    PetroChina Natl Engn Lab Explorat &

    Dev Low Permeabil Oil &

    Changging Oil Field Beijing Peoples R China;

    PetroChina Natl Engn Lab Explorat &

    Dev Low Permeabil Oil &

    Changging Oil Field Beijing Peoples R China;

    Shaanxi Univ Sci &

    Technol Shaanxi Key Lab Chem Addit Ind Xian 710021 Shaanxi Peoples R China;

    Shaanxi Univ Sci &

    Technol Shaanxi Key Lab Chem Addit Ind Xian 710021 Shaanxi Peoples R China;

    Shaanxi Univ Sci &

    Technol Shaanxi Key Lab Chem Addit Ind Xian 710021 Shaanxi Peoples R China;

    Shaanxi Univ Sci &

    Technol Shaanxi Key Lab Chem Addit Ind Xian 710021 Shaanxi Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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