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Investigation on the interfacial properties of a viscoelastic-based surfactant as an oil displacement agent recovered from fracturing flowback fluid

机译：基于粘弹性表面活性剂的界面性能研究，作为压裂流动液中回收的油位移剂

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摘要

The utilization of a viscoelastic-based surfactant recovered from fracturing flowback fluid in chemical flooding was investigated in this paper. The interfacial tension behavior, wettability alteration, dynamic adsorption capacity and incremental oil recovery ability were studied. The oil/water interfacial tension was lowered to 10(-4) to 10(-3) mN m(-1) due to 0.06 to 0.15 wt% of VES in the fracturing flowback fluid. The oil-wet surface can be easily converted to weak water-wet through adsorption of VES. A series of sandpack core flooding tests were conducted under the Dingbianluo reservoir condition to investigate the effects of interfacial tension and slug sizes on enhanced oil recovery. Finally, an SEM scanning test and microscopic displacement test were used to investigate the mechanism of surfactant flooding. This investigation confirmed that the fracturing flowback fluid recovered from fracturing treatment can be reused for surfactant flooding with probable environmental and economic benefits.
机译：本文研究了利用从压裂流体中回收的基于粘弹性的表面活性剂在化学洪水中。研究了界面张力行为，润湿性改变，动态吸附能力和增量油回收能力。由于压裂流动流体中的0.06至0.15wt％，油/水界面张力降至10（-4）至10（-3）Mn m（-3）。通过吸附VES，油湿表面可以很容易地转化为弱水湿。在鼎伯洛储层条件下进行了一系列砂包核心泛滥试验，以研究界面张力和粘贴尺寸对增强的采油的影响。最后，使用SEM扫描试验和微观位移试验来研究表面活性剂洪水的机制。该研究证实，可以重复从压裂处理中回收的压裂流动流体，用于具有可能的环境和经济效益的表面活性剂洪水。

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  • 来源
    《RSC Advances》 |2016年第44期|共10页
  • 作者

    Wang Kai; Liu Chen; Zhou Wensheng;

  • 作者单位

    China Natl Offshore Oil Corp Res Inst Beijing 100028 Peoples R China;

    China Natl Offshore Oil Corp Res Inst Beijing 100028 Peoples R China;

    China Natl Offshore Oil Corp Res Inst Beijing 100028 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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