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首页> 外文期刊>Journal of Applied Polymer Science >The use of environmental scanning electron microscopy for imaging the microstructure of gels for profile control and water shutoff treatments
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The use of environmental scanning electron microscopy for imaging the microstructure of gels for profile control and water shutoff treatments

机译：使用环境扫描电子显微镜对凝胶的微观结构进行成像，以进行轮廓控制和堵水处理

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摘要

The use of gel systems as profile control and water shutoff agents has become a wide practice in recent years for oil recovery applications. But few systematic studies have been carried out on the microstructure of gels. In this study, environmental scanning electron microscopy (ESEM) was employed to investigate the microstructure of gels in their natural state. It was directly observed that a three-dimensional network structure formed in chromium or zirconium crosslinked polymer gels is the same as organic/ inorganic crosslinked gels. However, there is a dense flat structure in phenol resin crosslinked polymer gels or phenolic resin gels. The differences between the microstructures can be attributed to the different crosslinking sites and crosslinking density, and this affect the gel's stability at reservoir temperatures. In addition, this paper also introduced the crosslinking mechanism and macro-morphology of the bulk gels. It can contribute to a better understanding of the gel's microstructure.
机译：近年来，在采油应用中，将凝胶系统用作调剖剂和堵水剂已成为一种广泛的实践。但是，关于凝胶的微观结构的系统研究很少。在这项研究中，环境扫描电子显微镜（ESEM）用于研究凝胶在其自然状态下的微观结构。直接观察到在铬或锆交联的聚合物凝胶中形成的三维网络结构与有机/无机交联的凝胶相同。然而，在酚醛树脂交联的聚合物凝胶或酚醛树脂凝胶中存在致密的扁平结构。微观结构之间的差异可以归因于不同的交联部位和交联密度，这影响了凝胶在储层温度下的稳定性。此外，本文还介绍了本体凝胶的交联机理和宏观形态。它有助于更​​好地了解凝胶的微观结构。

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