Abstract
In this paper, we study the protective effectiveness of the inhibitory composition (25–200 mg/L) against carbon steel corrosion in model formation waters NACE and M1 containing 400 mg/L of H2S individually and together with CO2 using gravimetry, potentiodynamic polarization, and impedance spectroscopy. Its ability to affect the diffusion of hydrogen into the metal and the development of sulfate-reducing bacteria is also estimated. Under static conditions, the protective effect is 73% in the NACE environment and 62% in the M1 environment at room temperature and 74 and 83% at 80°C, respectively. Under hydrodynamic conditions, the protective effect of the composition in the presence of a hydrocarbon phase (10%) reaches 90% in the NACE environment and 77% in the M1 environment. The inhibitory composition accelerates the diffusion of hydrogen into the metal and suppresses the growth of sulfate-reducing bacteria in the Postgate nutrient medium.
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ACKNOWLEDGMENTS
The results were obtained using the equipment of the Center for Collective Use of Scientific Equipment of Derzhavin State University.
Funding
The work was supported by the Ministry of Science and Higher Education of the Russian Federation, project no. 075-15-2021-709 (project identifier RF2296.61321X0037).
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Translated by A. Ivanov
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Tsygankova, L.E., Abramov, A.E., Uryadnikov, A.A. et al. Inhibiting Composition Against Steel Corrosion in Model Formation Waters of Oil and Gas Fields. Steel Transl. 53, 922–927 (2023). https://doi.org/10.3103/S0967091223110335
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DOI: https://doi.org/10.3103/S0967091223110335