Due to small shear viscosity of supercritical carbon dioxide, oil drilling leads to viscous fingering. Addition of polymer as thickener in supercritical CO₂ has been used for improving the sweep efficiency of flooding. The simulated shear viscosity of supercritical CO₂ systems increased with the addition of the polymer. The groups of the polymer have different ability to bind the supercritical CO₂ molecules. The binding effect can mainly be attributed to space grid structure of polymer to reduce movement of CO₂ molecules, in which the van der Waals interaction was the main constraint interaction.

中文翻译：

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超临界CO ₂增稠剂增稠机理的分子动力学模拟

由于超临界二氧化碳的剪切粘度小，石油钻探会导致粘性指法。在超临界CO _2中添加聚合物作为增稠剂已被用于提高驱油的波及效率。超临界CO ₂系统的模拟剪切粘度随聚合物的添加而增加。聚合物的基团具有不同的结合超临界CO ₂分子的能力。结合作用主要归因于聚合物的空间网格结构以减少CO ₂分子的运动，其中范德华相互作用是主要的约束相互作用。