Influence of oxygen partial pressure on the passivation and depassivation of super 13Cr stainless steel in high temperature and CO2 rich environment

Lv Naixin; Fu Anqing; Liu Hanwei; Lv Wei; Gao Yan; Bai Haitao; Song Shaohua; Yin Chengxian; Liang Xin; Xu Zhengyi

doi:10.1038/s41598-024-77208-w

Scientific Reports (Nov 2024)

Influence of oxygen partial pressure on the passivation and depassivation of super 13Cr stainless steel in high temperature and CO2 rich environment

Lv Naixin,
Fu Anqing,
Liu Hanwei,
Lv Wei,
Gao Yan,
Bai Haitao,
Song Shaohua,
Yin Chengxian,
Liang Xin,
Xu Zhengyi

Affiliations

Lv Naixin: State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute
Fu Anqing: State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute
Liu Hanwei: National Engineering Laboratory of Low Permeability Oil-gas Field Exploration and Development
Lv Wei: National Engineering Laboratory of Low Permeability Oil-gas Field Exploration and Development
Gao Yan: CCDC Changqing Downhole Technology Company
Bai Haitao: College of Petroleum Engineering, Shaanxi Key Laboratory of Advanced Stimulation Technology for Oil & Gas Reservoirs, Xi’an Shiyou University
Song Shaohua: Shaanxi Jiuzhou Petroleum Engineering Technology Service Co. Ltd
Yin Chengxian: State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute
Liang Xin: CiTiC Dicastal Wheel Manufacturing Co., Ltd
Xu Zhengyi: State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute

DOI: https://doi.org/10.1038/s41598-024-77208-w
Journal volume & issue: Vol. 14, no. 1
pp. 1 – 16

Abstract

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Abstract The passivation and depassivation characteristics of Super 13Cr stainless steel were examined under a range of oxygen partial pressures within a high-temperature (120 ℃) and high-pressure (3 MPa) CO2 atmosphere. We performed comprehensive electrochemical assessments, encompassing open-circuit potential monitoring, electrochemical impedance spectroscopy, and linear polarization resistance analysis, to evaluate the corrosion resistance and passive film stability. The results demonstrate that the addition of low O2 partial pressures enhanced the stability of the passive film, while higher O2 levels led to the loss of the passivation properties of Super 13Cr stainless steel. The study elucidates the pivotal role of oxygen in the corrosion mechanisms affecting Super 13Cr stainless steel, presenting valuable data to enhance for integrity management in severe environmental conditions.

Published in Scientific Reports

ISSN: 2045-2322 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Medicine; Science
Website: https://www.nature.com/srep/

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