Corrosion Inhibition Investigation of Small Organic Inhibitor on API5LX60 Steel in 3.5% NaCl Solution with CO2 Saturation

Q3 Biochemistry, Genetics and Molecular Biology

Biointerface Research in Applied Chemistry Pub Date : 2022-10-31 DOI:10.33263/briac134.380

引用次数: 0

Abstract

CO2 corrosion has emanated as a significant concern in the oil/gas industry owing to the aging of its oilfields. Thus, corrosion protection is significant for maintaining the integrity and sustainability of pipelines, surface facilities, and downhole tools in the oil/gas sector. The present study evaluates the corrosion inhibitory properties of three oxazolone derivatives in CO2 saturated 3.5 weight% NaCl solution against API5LX60 carbon steel used in certain wells and oil/ gas transportation pipelines. The inhibitory behavior was investigated utilizing gravimetric and electrochemical techniques viz. EIS, PDP, and LPR. Electrochemical and Gravimetric technique results were in congruence. EIS asserts capacitive behavior, and PDP affirms oxazolones as mixed inhibitors. SEM and SEM-EDX confirmed the formation of a protective layer by adsorption. At an optimum inhibitor concentration of 200 ppm, inhibitor I exhibited 91.30% inhibition—linear correlation coefficient R2 value of 0.99 avowed adsorptions via Langmuir Isotherm.

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小型有机缓蚀剂对API5LX60钢在3.5%NaCl饱和CO2溶液中的缓蚀性能研究

由于油田的老化，二氧化碳腐蚀已经成为石油/天然气行业的一个重要问题。因此，在油气行业，防腐蚀对于维护管道、地面设施和井下工具的完整性和可持续性至关重要。本研究评价了三种恶唑酮衍生物在CO2饱和3.5重量% NaCl溶液中对某些井和油气输送管道中使用的API5LX60碳钢的缓蚀性能。利用EIS, PDP和LPR等电化学技术研究了其抑制行为。电化学和重量测定结果一致。EIS确认电容性行为，PDP确认恶唑酮为混合抑制剂。SEM和SEM- edx通过吸附证实了保护层的形成。在最佳浓度为200 ppm时，抑制剂1的抑制率为91.30%，Langmuir等温线的线性相关系数R2值为0.99。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Biointerface Research in Applied Chemistry CHEMISTRY, APPLIED-

CiteScore

4.80

自引率

0.00%

发文量

256

期刊介绍： Biointerface Research in Applied Chemistry is an international and interdisciplinary research journal that focuses on all aspects of nanoscience, bioscience and applied chemistry. Submissions are solicited in all topical areas, ranging from basic aspects of the science materials to practical applications of such materials. With 6 issues per year, the first one published on the 15th of February of 2011, Biointerface Research in Applied Chemistry is an open-access journal, making all research results freely available online. The aim is to publish original papers, short communications as well as review papers highlighting interdisciplinary research, the potential applications of the molecules and materials in the bio-field. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible.