It is essential to have an adequate understanding of the fluid-structure in a porous medium since this gives direct information about the processes necessary to extract the liquid and the likely yield. The concept of symmetry is one of the petroleum engineering issues that has been used to provide an analytical analysis for modeling fluid dynamics through porous media, which can be beneficial to validate the experimental field data. Tight reservoirs regarding their unique reservoir characterization have always been considered as a challenging issue in the petroleum industries. In this paper, different injectivity scenarios which included chemical and thermal methods were taken into consideration to compare the efficiency of each method on the oil recovery enhancement. According to the results of this experiment, the recovery factor for foams and brine injection is about 80%, while it is relatively 66% and 58% for brine-carbon dioxide and brine-nitrogen, respectively. Consequently, foam injection after water flooding would be an effective method to produce more oil volumes in tight reservoirs. Moreover, KCl regarding its more considerable wettability changes has provided more oil production rather than other scenarios.

中文翻译：

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混合热化学强化采油方法；致密油藏试验研究

充分了解多孔介质中的流体结构至关重要，因为这提供了有关提取液体所需过程和可能产率的直接信息。对称性的概念是石油工程问题之一，已被用于为通过多孔介质模拟流体动力学提供分析分析，这有助于验证实验现场数据。致密储层因其独特的储层特征一直被认为是石油工业中的一个具有挑战性的问题。在本文中，包括化学和热方法在内的不同注入方案被考虑在内，以比较每种方法在提高石油采收率方面的效率。根据这个实验的结果，泡沫和盐水注入的采收率约为 80%，而盐水-二氧化碳和盐水-氮气的采收率分别为 66% 和 58%。因此，注水后注入泡沫将是在致密油藏中生产更多油量的有效方法。此外，KCl 因其更显着的润湿性变化提供了更多的石油产量，而不是其他情况。