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首页> 外文期刊>Journal of Applied Polymer Science >Capillary breakup extensional rheometry of associative and hydrolyzed polyacrylamide polymers for oil recovery applications
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Capillary breakup extensional rheometry of associative and hydrolyzed polyacrylamide polymers for oil recovery applications

机译：用于采油应用的缔约置和水解聚丙烯酰胺聚合物的毛细管分解延伸流变学

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摘要

High molecular weight polymers used for heavy oil recovery exhibit viscoelasticity that can influence the oil recovery during chemical enhanced oil recovery. Different polymers having similar molecular weight and shear rheology may have different elongation flow behavior depending on their extensional properties. Displacing slugs are more likely to stretch than shear in tortuous porous media. Therefore, it is critical to seek an analytical tool that can characterize extensional parameters to improve polymer selection criteria. This article focuses on the extensional characterization of two polymers (hydrolyzed polyacrylamide and associative polymer) having identical shear behavior using capillary breakup extensional rheometer to explain their different porous media behavior. Maximum extensional viscosity at the critical Deborah number and Deborah number in porous media classified the associative polymer as the one having high elastic-limit. Extensional characterization results were complemented by significantly higher pressure drop, marginally increased oil recovery of associative polymer in porous media. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46253.
机译：用于重油回收的高分子量聚合物表现出粘弹性，其能够影响化学增强的采油过程中的采油。根据其延伸性质，具有相似分子量和剪切流变学的不同聚合物可以具有不同的伸长流动行为。位移槽比在曲折多孔介质中更容易伸展。因此，寻求一种分析工具至关重要的是可以表征延伸参数以改善聚合物选择标准。本文侧重于使用毛细管分解延伸流变仪具有相同剪切行为的两种聚合物（水解聚丙烯酰胺和关联聚合物）的延伸表征，以解释其不同的多孔介质行为。在多孔介质中的关键Deborah数和Deborah编号中的最大延伸粘度将缔合聚合物分为具有高弹性极限的缔合聚合物。通过显着提高的压降，临床介质的累积聚合物在多孔介质中的兴奋剂恢复较高，延伸表征结果互补。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2018,135,46253。

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