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Suitability of hot urea solutions for wettability alteration of bitumen reservoirs - Simulation of laboratory flooding experiments

机译：热尿素溶液对沥青储层润湿性变化的适应性-实验室水驱实验的模拟

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摘要

We report highly fine grid numerical simulation of sandpack flooding experiments conducted using 5 and 10 wt % hot urea solutions for wettability alteration of bitumen reservoirs. Another hot water flooding experiment was also simulated as a baseline for comparison with hot urea solutions. The relative permeability curves have been obtained through history matching of the experimental oil recovery. The results indicated that urea solutions have proved to be efficient in wettability alteration toward more water-wet and attenuation of viscous fingering leading to delayed water breakthrough as was confirmed by the shape of the relative permeability curves. Wettability alteration led to incremental oil recovery compared to the hot water flooding. It was shown that wettability alteration and the in-situ generation of water in oil (W/O) emulsions previously observed in experiments can be captured using the relative permeability curves. These results find application in the design and optimization of thermal bitumen recovery processes.
机译：我们报告了使用5％和10 wt％的热尿素溶液对沥青储集层进行润湿性改变而进行的沙堆注水实验的高精细网格数值模拟。还模拟了另一个热水驱油实验，作为与热尿素溶液进行比较的基准。通过实验油采收率的历史拟合获得了相对渗透率曲线。结果表明，相对渗透率曲线的形状证实，尿素溶液已被证明能有效地将润湿性改变为更多的水，并减弱粘性指状物，导致延迟的水渗透。与热水驱油相比，润湿性的改变导致采油量的增加。结果表明，使用相对渗透率曲线可以捕获先前在实验中观察到的润湿性变化和油中水（W / O）乳液的原位生成。这些结果可用于热沥青回收工艺的设计和优化。

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  • 来源
    《Fuel》 |2020年第jul15期|117713.1-117713.8|共8页
  • 作者

  • 作者单位

    Univ Calgary Schulich Sch Engn Dept Chem & Petr Engn 2500 Univ Dr NW Calgary AB T2N 1N4 Canada|Hadhramout Univ Sci & Technol Coll Engn & Petr Dept Petr Engn Mukalla 50511 Hadhramout Yemen;

    Univ Calgary Schulich Sch Engn Dept Chem & Petr Engn 2500 Univ Dr NW Calgary AB T2N 1N4 Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Urea solution; Bitumen; Relative Permeability; Wettability alteration; Simulation; History matching;

    机译：尿素溶液;沥青;相对渗透率润湿性改变;模拟;历史匹配;

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