The methods of investigation of oxygen influence on corrosion and hydrogenation of pipe steel in hydrogen sulfide environments

Keywords

oxygen, hydrogen sulfide, corrosion, hydrogenation, steel.

Cite as

Khoma M. S., Chuchman M. R., Vasyliv Kh. B., Ratska N. B., and Koval’chyk Yu. I. The methods of investigation of oxygen influence on corrosion and hydrogenation of pipe steel in hydrogen sulfide environments. Physicochemical Mechanics of Materials. 2024. 60(5), 010-017.

https://doi.org/10.15407/pcmm2024.05.010

Abstract

An experimental installation was developed for corrosion tests of steels in mineralized environ­ments at different ratios of partial pressures of hydrogen sulfide and air. Corrosion and hydrogenation of 17G1S-U steel were studied in a chloride-acetate solution bubbled with hydrogen sulfide, air, and their mixtures. The addition of oxygen to a hydrogen sulfide en­vironment slows corrosion in short-term electrochemical tests. The con­centration of hydrogen sulfide in the solution decreases as a result of interaction with oxygen and cathodic reactions slow down. The corrosion rate of steel is accelerated in 1.5–2 times during long-term tests in a solution with a ratio of P_H2S : P_air 1 : 10. Oxygen complicates the formation of a sulfide-containing layer on the steel surface due to the oxidation of sul­fides with the formation of hydrophobic inclusions of sulfur and iron hydroxide. Sulfide films lose their barrier properties: their porosity increases, thickness and adhesion to the metal decreases. Selective etching of ferrite from the steel surface as a result of corrosion was recorded, thus leading to an increase in the real contact area of the metal with the environment and corrosion acceleration with time.

References

1. J. Kittel, N. Ferrando, M. D. D. Ayagou, C. Mendibide, E. Sutter, T. T. M. Tran, and B. Tribollet, “Impact of oxygen on corrosion and hydrogen permeation of pure iron in the presence of H2S,” Eurocorr. (2017). Article number 02462631.
2. M. D. D. Ayagou, G. R. Joshi, T. T. M. Tran, B. Tribollet, E. Sutter, C. Mendibide, C. Duret-Thual, and J. Kittel, “Impact of oxygen contamination on the electrochemical impedance spectroscopy of iron corrosion in H2S solutions,” Corr. Sci., 164 (2020). Article number 108302. https://doi.org/10.1016/j.corsci.2019.108302
3. M. D. Deffo Ayagou, M. Tran, B. Tribollet, J. Kittel, E. Sutter, N. Ferrando, Ch. Mendibide, and C. Duret-Thual, “Electrochemical impedance spectroscopy of iron corrosion in H2S solutions,” Electrochimica Acta, 282, 775-783 (2018). https://doi.org/10.1016/j.electacta.2018.06.052
4. M. D. D. Ayagou, C. Mendibide, C. Duret Thual, K. Belkhadiri, M. T. T. Tuyet, E. Sutter, B. Tribolet, N. Ferrando, and J. Kittel, “Corrosion and hydrogen permeation in H2S environments with O2 contamination, 1: Tests on pure iron at high H2S concentration,” Corrosion, 74, Is. 11, 1192-1202 (2018). https://doi.org/10.5006/2893
5. Y. Song, A. Palencsár, G. Svenningsen, J. Kvarekvål, and T. Hemmingsen, “Effect of O2 and temperature on sour corrosion,” Corrosion, 68, Is. 7, 662-671 (2012). https://doi.org/10.5006/0341
6. L. Sow, J. Idrac, P. Mora, and E. Font, “Influence of environmental parameters on corrosion mechanisms of steels used in oil field,” Mater. and Corr., 66, 1245-1249 (2015). https://doi.org/10.1002/maco.201408156
7. Y. Long, W. Song, A. Fu, J. Xie, Y. Feng, Z. Bai, C. Yin, Q. Ma, N. Ji, and X. Kuang, “Combined effect of hydrogen embrittlement and corrosion on the cracking behaviour of C110 low alloy steel in O2-contaminated H2S environment,” Corr. Sci., 194 (2022). Article number 109926. https://doi.org/10.1016/j.corsci.2021.109926
8. K. Liao, J. Leng, Y. F. Cheng, Q. Zou, T. He, L. Chen, M. Qin, X. Liu, and S. Zhao, “Investigation into main controlling factors and prediction model of L245NS steel corrosion rate in CO2-O2-SO2-H2S-H2O environment,” Mater. Chem. and Phys., 309 (2023). Article number 128414. https://doi.org/10.1016/j.matchemphys.2023.128414
9. J. Luo, P. Yan, Y. Fan, S. Lu, and Y. Long, “Investigation of corrosion behavior of 2205 duplex stainless steel coiled tubing in complex operation environments of oil and gas wells,” Eng. Failure Analysis, 151 (2023). Article number 107355. https://doi.org/10.1016/j.engfailanal.2023.107355
10. М. S. Khoma, Ch. B. Vasyliv, and М. R. Chuchman, “Influence of the hydrogen sulfide concentration on the corrosion and hydrogenation of pipe steels (A survey),” Mater. Sci., 57, No. 3, 308-318 (2021). https://doi.org/10.1007/s11003-021-00546-x
11. M. S. Khoma, V. I. Pokhmurskii, M. R. Chuchman, Ch. B. Vasyliv, V. R. Ivashkiv, and N. B. Ratska, “Сorrosion-mechanical properties and susceptibility to hydrogenataion of pipe steel in the presence of carbon dioxide gas and hydrogen sulphide in environment,” Mater. Sci., 59, No. 2, 205-212 (2023). https://doi.org/10.1007/s11003-024-00764-z