高温CO2缓蚀剂的研究进展
Research Progress of High Temperature CO2 Corrosion Inhibitors
CO2腐蚀作为油气田开采中最普遍及严重的钢材腐蚀类型之一,其破坏性不容忽视。值得注意的是,在相同pH条件下,碳酸所致的腐蚀效应竟显著超越盐酸,已成为制约油气行业进步的重要瓶颈。采用缓蚀剂控制CO2腐蚀,被视为最经济且高效的策略。随着油气田钻井作业逐渐向深井延伸,高温高压环境下的CO2腐蚀问题日益严峻。本文深入探讨了碳钢在高温CO2条件下腐蚀作用机理,综述了国内外针对高温CO2以及含S环境下缓蚀剂的最新研究进展,着重介绍了咪唑啉类、季铵盐类和天然提取物类缓蚀剂的性能特点,剖析了缓蚀机制。最后,基于现有研究成果,对高温CO2缓蚀剂的发展趋势进行了前瞻性讨论,旨在为未来研究提供理论指导和技术支持。
Carbon dioxide corrosion is one of the most common corrosion types of steel materials in the exploitation of oil and gas fields. Surprisingly, the corrosion caused by carbonic acid at the same pH is even more severe than hydrochloric acid, which has become an important factor limiting the development of the oil and gas industry. The use of corrosion inhibitors is the most economical and effective method to control CO2 corrosion. With the development of oil and gas drilling operations to deeper wells, CO2 corrosion under high temperature and pressure environment becomes increasingly prominent. This paper introduces the mechanism of high-temperature CO2 corrosion of carbon steel. The paper reviews the domestic and foreign research on corrosion inhibitors for high temperature CO2 and high S environment, mainly including imidazolines, quaternary ammonium salts, natural extracts and other corrosion inhibitors and analyzes corresponding characteristics. Finally, the future development direction of high temperature CO2 inhibitor was prospected.
1 Introduction
2 Corrosion mechanism of carbon dioxide on carbon steel at high temperature
3 Types of high-temperature CO2 corrosion inhibitors
3.1 Imidazoline high-temperature corrosion inhibitor
3.2 Quaternary ammonium salt high-temperature corrosion inhibitor
3.3 Natural extract high-temperature corrosion inhibitor
4 High temperature corrosion inhibitor in high S environment
5 Conclusion and outlook
high temperature / CO2 corrosion / corrosion inhibitor / corrosion performance
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国家自然科学基金项目(22378309)
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