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首页> 外文期刊>Petroleum science >Study of the mechanisms of streamline-adjustment-assisted heterogeneous combination flooding for enhanced oil recovery for post-polymer-flooded reservoirs
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Study of the mechanisms of streamline-adjustment-assisted heterogeneous combination flooding for enhanced oil recovery for post-polymer-flooded reservoirs

机译：高聚物淹水储层增强石油回收的流线调整辅助异质组合洪水机制研究

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摘要

Streamline-adjustment-assisted heterogeneous combination flooding is a new technology for enhanced oil recovery for post-polymer-flooded reservoirs. In this work, we first carried out a series of 2D visualization experiments for different chemical flooding scenarios after polymer flooding. Then, we explored the synergistic mechanisms of streamline-adjustment-assisted heterogeneous combination flooding for enhanced oil recovery and the contribution of each component. Test results show that for single heterogeneous combination flooding, the residual oil in the main streamline area after polymer flooding is ready to be driven, but it is difficult to be recovered in the non-main streamline area. Due to the effect of drainage and synergism, the streamline-adjustment-assisted heterogeneous combination flooding diverts the injected chemical agent from the main streamline area to the non-main streamline area, which consequently expands the active area of chemical flooding. Based on the results from the single-factor contribution of the quantitative analysis, the contribution of temporary plugging and profile control of branched preformed particle gels ranks in the first place and followed by the polymer profile control and the effect of streamline adjustment. On the contrary, the surfactant contributes the least to enhance the efficiency of oil displacement.
机译：精简调整辅助的异构组合洪水是一种新技术，用于加强后聚合物淹水储层的采油。在这项工作中，我们首先在聚合物洪水中进行了一系列的2D可视化实验，以进行不同化学洪水情景。然后，我们探讨了精简调整辅助异质组合洪水的协同机制，以提高储存和每个组分的贡献。测试结果表明，对于单一的异质组合洪水，聚合物洪水后主要流线面积中的残留油已准备好被驱动，但难以在非主流线区域中恢复。由于引流和协同作用的影响，流线调整辅助的异质组合泛滥将注射的化学试剂从主流线区域转移到非主流划线区域，从而扩大了化学洪水的活性面积。基于定量分析的单因素贡献的结果，分支预成型粒子凝胶的临时堵塞和轮廓控制的贡献在第一位置排列，然后是聚合物曲线控制和流线调整的效果。相反，表面活性剂有助于提高油位移效率。

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