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Synthesis and characterization of a novel, pH-responsive, bola-based dynamic crosslinked fracturing fluid

机译:一种新型,pH响应,基于Bola的动态交联压裂液的合成与表征

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Fracturing fluids are important media for hydraulic fracturing. Typically, the fluids are gelled using a polymeric gelling agent. Technological improvements over the years have focused primarily on improving the rheological performance, thermal stability, and the clean-up of crosslinked gels. In this study, novel supramolecular assembly of a low-damage fracturing fluid combining an ionic polymer gel (hydroxypropyl trimethylammonium chloride guar-cationic guar) and a bola surfactant fluid (bola carboxylate polypropylene glycol) is carried out and it is reported to have improved properties and special characteristics due to the synergistic effects of the dual systems, which are different from those of polymer gels and surfactant fluids. The viscosity of the fracturing fluid shows a sudden increase upon an increase in temperature and excellent self-assembly recovery after shearing. The fracturing fluid exhibits pH-responsive viscosity changes and low permeability impairment, due to the formation of a network structure and supramolecular microspheres at different pH values.
机译:压裂液是液压压裂的重要介质。通常,使用聚合物胶凝剂凝胶化流体。多年来的技术改进主要集中在提高流变性能,热稳定性和交联凝胶的清理方面。在这项研究中,新颖的超分子组装的低伤害压裂液组合的离子性聚合物凝胶(羟丙基三甲基氯化铵瓜尔胶的阳离子瓜尔胶)和博拉表面活性剂的流体(博拉羧酸聚丙二醇)进行并且据报导具有改进的性能由于双系统的协同效应,具有与聚合物凝胶和表面活性剂流体不同的特殊特性。压裂液的粘度显示在剪切后温度和优异的自组装回收率突然增加。由于在不同pH值下形成网络结构和超分子微球,压裂液表现出pH响应粘度变化和低渗透性损伤。

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    《RSC Advances》 |2019年第59期|共12页
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  • 正文语种 eng
  • 中图分类 化学;
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