Investigation of the Corrosion and Passive Behavior of HP-13Cr Stainless Steel in Formate Annulus Protection Fluid

IF 2.9 2区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Acta Metallurgica Sinica-English Letters Pub Date : 2024-04-09 DOI:10.1007/s40195-024-01689-x

Jidong Wang, Tengfei Yin, Wenlong Qi, Xuanpeng Li, Yang Zhao, Tao Zhang, Fuhui Wang

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Abstract

The corrosion and passive behavior of HP-13Cr stainless steel (HP-13Cr SS) in formate annulus protection fluid was investigated. HP-13Cr SS exhibited good passive behavior in clean formate annulus protection fluid, which was attributed to a thinner and more dense passive film mainly composed of Cr₂O₃. In the formation water solution, the passive film was composed of metastable Cr(OH)₃, which was explained by the isoelectric point theory, resulting in the deterioration of the passive behavior of HP-13Cr SS. When the formation water penetrated the formate annulus protection fluid, a large number of loose FeCO₃ particles formed in the corrosion scales, thus HP-13Cr SS suffered severe corrosion. Therefore, avoiding formation water penetrating the formate annulus protection fluid is conducive to improving the service life of HP-13Cr SS oil tubes in extremely aggressive environment.

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甲酸盐环形保护液中 HP-13Cr 不锈钢的腐蚀和被动行为研究

研究了 HP-13Cr 不锈钢（HP-13Cr SS）在甲酸盐环形保护液中的腐蚀和被动行为。HP-13Cr SS 在清洁的甲酸盐环状保护液中表现出良好的被动行为，这归因于主要由 Cr2O3 组成的更薄更致密的被动膜。在地层水溶液中，被动膜由逸散的 Cr(OH)3 组成，这可以用等电点理论来解释，从而导致 HP-13Cr SS 的被动行为变差。当地层水渗透到甲酸盐环形保护液中时，腐蚀鳞片中形成了大量疏松的 FeCO3 颗粒，因此 HP-13Cr SS 遭到了严重腐蚀。因此，避免地层水渗入甲酸环保护液有利于提高 HP-13Cr SS 油管在极腐蚀环境中的使用寿命。

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来源期刊

Acta Metallurgica Sinica-English Letters METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

6.60

自引率

14.30%

发文量

122

审稿时长

2 months

期刊介绍： This international journal presents compact reports of significant, original and timely research reflecting progress in metallurgy, materials science and engineering, including materials physics, physical metallurgy, and process metallurgy.