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首页> 外文期刊>Journal of Applied Polymer Science >New structure found in a filter cake with the addition of an amphoteric polymer fluid loss additive
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New structure found in a filter cake with the addition of an amphoteric polymer fluid loss additive

机译：在滤饼中发现的新结构，添加了两性聚合物流体损失添加剂

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摘要

Water-based drilling fluids always suffer from high-salt and high-temperature conditions, which cause safety andeconomic problems. Amphoteric copolymers are expected to solve this, although the underlying factors are still controversial. In this study, the AST (an amphoteric copolymer which was synthesized from 2-acrylamide-2-methyl propane sulfonicacid, (3-acrylamidopropyl)trimethyl ammonium chloride and acrylamide) was used as fluid loss additive, kaolinite (KT) was used as an evaluation condition, and a sandwich structure was found on the cross section of the filter cake. Four potential mainstream explanations were analyzed: the polymer properties, rheological behavior, dispersion of platelets, and structure of the filter cake. The sandwich structures in the cross section of filter cake were finally found and were confirmed by energy-dispersive spectroscopy. The sandwich structure, which consisted of an amphoteric polymer and a clay platelet, affected the fluid loss dramatically. This method for studying the cross section of the filter cake on the basis of KT evaluation could be used to investigate the filtration process of other fluid loss additives. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47965.
机译：水性钻井液总体伴有高盐和高温条件，引起安全和经济问题。预计两性共聚物将解决这一点，尽管潜在的因素仍然存在争议。在该研究中，使用由2-丙烯酰胺-2-甲基丙烷磺酸（3-丙酰胺酰亚胺丙基）三甲基氯化铵和丙烯酰胺中合成的两性共聚物作为流体损失添加剂，使高岭石（KT）用作在滤饼的横截面上发现了评估条件和夹层结构。分析了四种潜在的主流解释：聚合物性质，流变学行为，血小板分散和滤饼的结构。最后发现滤饼横截面中的夹层结构，并通过能量分散光谱证实。由两性聚合物和粘土血小板组成的夹层结构急剧影响流体损失。在基于KT评估的基础上研究滤饼横截面的方法可用于研究其他流体损失添加剂的过滤过程。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47965。

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