Understanding polymer retention is a critical aspect in the field of chemical-enhanced oil recovery (cEOR). This article presents a comprehensive review of polymer retention in reservoir rocks, focusing on the underlying mechanisms, measurement techniques, and the factors influencing this phenomenon. Three main (proposed) mechanisms that contribute to polymer retention are discussed in detail. Polymer adsorption, hydrodynamic retention, and mechanical entrapment are identified as key factors affecting the overall retention of polymers during flow through porous media. Also, herein, we explore the details of these mechanisms, explaining how polymer characteristics and rock surface properties influence the degree of retention. Furthermore, we analyze the influencing factors that affect polymer retention. The rock surface properties, such as surface charge and wettability, play a vital role in determining the interaction between polymers and rocks. The interplay of these factors provides valuable insights into understanding and controlling polymer retention in cEOR applications. This review paper put in a nutshell a comprehensive understanding of the mechanisms, measurement techniques, and influencing factors involved.

中文翻译：

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了解储层岩石中聚合物滞留的进展：综合综述


了解聚合物截留率是化学强化采油 （cEOR） 领域的一个关键方面。本文全面回顾了储集层岩石中聚合物滞留的情况，重点介绍了潜在的机制、测量技术以及影响这种现象的因素。详细讨论了有助于聚合物保留的三种主要（拟议）机制。聚合物吸附、流体动力学保留和机械截留被认为是影响聚合物在流经多孔介质期间整体保留的关键因素。此外，在本文中，我们探讨了这些机制的细节，解释了聚合物特性和岩石表面特性如何影响保留程度。此外，我们分析了影响聚合物保留的影响因素。岩石表面特性，如表面电荷和润湿性，在决定聚合物和岩石之间的相互作用方面起着至关重要的作用。这些因素的相互作用为了解和控制 cEOR 应用中的聚合物保留提供了有价值的见解。这篇综述论文概括了对所涉及的机制、测量技术和影响因素的全面理解。