Abstract
The paper considers the modeling of CO2-corrosion on chromium-containing steels 1-5%. Study of the protective properties of a layer of corrosion products on steels with a chromium content of 1-5% and the effect of periodic hydrochloric acid treatments.
Highlights
Transportable environments of oil and gas deposits (Eastern and Western Siberia, the Volga region, the Orenburg region, the Komi Republic, etc.) contain an excessive concentration of carbon dioxide, which leads to premature pit corrosion of oil and gas pipes
Steels with a chromium content of 0.7 to 5 wt. % are the objects of the re-search
The analyzed curves can be divided into 2 stages: 1) Formation of a layer of carbon dioxide corrosion products; 2) The stage of stabilization, at which the concentration of Fe (II) in the solution practically does not change
Summary
Transportable environments of oil and gas deposits (Eastern and Western Siberia, the Volga region, the Orenburg region, the Komi Republic, etc.) contain an excessive concentration of carbon dioxide, which leads to premature pit corrosion of oil and gas pipes. There is no model and methodology for assessing the mechanism and rate of carbon dioxide corrosion. This paper is devoted to the problem of modeling and studying the regularities of the flow of CO2-corrosion depending on the chemical composition of steels. The author [1] presents the results of a study of the effect of chemical elements with amphoteric properties in compounds of Cr, V, Mo, Si, etc., which affect the increase in the resistance of steels to pit carbonic acid corrosion. % are the objects of the re-search.
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