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Effect of Carbon Dioxide and Hydrogen Sulfide on the Localized Corrosion Susceptibility of Corrosion

Picture for Effect of Carbon Dioxide and Hydrogen Sulfide on the Localized Corrosion Susceptibility of Corrosion
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The purpose of this review is to discuss environmental effects, especially hydrogen sulfide and carbon dioxide on pitting susceptibility of low alloy steels and corrosion resistant alloys.

Product Number: 51317--8933-SG
ISBN: 8933 2017 CP
Author: Teresa Perez
Publication Date: 2017
Industries: Oil and Gas Production , Corrosion Monitoring and Control
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Carbon steels, low alloy steels (LAS) and corrosion resistant alloys (CRA) used in the upstream oil and gas industry may be susceptible to localized corrosion. Several variables control the oc-currence of localized corrosion, including alloy composition, heat treatment, and environmental effects such as temperature, and concentration of chloride, oxygen and other species. Regard-ing carbon and LAS, it is recognized that even small concentrations of hydrogen sulfide (H2S) can have an important effect on general corrosion rate when compared to environments where carbon dioxide (CO2) controlled the corrosion phenomenon. However, there are still several unknowns about the effect of H2S on pitting, which is the most common mode of sour service failure. Regarding CRA, there is contradictory information on the effect of H2S and CO2 in the environment and how it affects pitting corrosion initiation and propagation. The purpose of this review is to discuss the environmental effects, especially H2S and CO2 on pitting susceptibility of LAS and CRAs.
Keywords: low alloy steels, corrosion resistant alloys, localized corrosion, hydrogen sulfide, car-bon dioxide, passivation, PRE, chloride, temperature

Carbon steels, low alloy steels (LAS) and corrosion resistant alloys (CRA) used in the upstream oil and gas industry may be susceptible to localized corrosion. Several variables control the oc-currence of localized corrosion, including alloy composition, heat treatment, and environmental effects such as temperature, and concentration of chloride, oxygen and other species. Regard-ing carbon and LAS, it is recognized that even small concentrations of hydrogen sulfide (H2S) can have an important effect on general corrosion rate when compared to environments where carbon dioxide (CO2) controlled the corrosion phenomenon. However, there are still several unknowns about the effect of H2S on pitting, which is the most common mode of sour service failure. Regarding CRA, there is contradictory information on the effect of H2S and CO2 in the environment and how it affects pitting corrosion initiation and propagation. The purpose of this review is to discuss the environmental effects, especially H2S and CO2 on pitting susceptibility of LAS and CRAs.
Keywords: low alloy steels, corrosion resistant alloys, localized corrosion, hydrogen sulfide, car-bon dioxide, passivation, PRE, chloride, temperature

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Product Number: 51317--9244-SG
ISBN: 9244 2017 CP
Author: Pedro Rincon
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Effect of Acetic Acid on Sour Corrosion of Carbon Steel

Product Number: 51317--9318-SG
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An experimental study of corrosion of carbon steel in the presence of H2S, CO2 and acetic acid has been carried out. H2S and CO2 partial pressures up to 10 bar each were applied, with temperatures of 25 and 90oC.
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51316-7313-Effect of Iron Sulfide Deposits on Sour Corrosion of Carbon Steel

Product Number: 51316-7313-SG
ISBN: 7313 2016 CP
Author: Jon Kvarekval
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The corrosive effects of iron monosulfide deposited on carbon steel surfaces were investigated in  autoclave experiments. The H2S and CO2 partial pressures were 1 to 20 bar.  Temperatures were 10-120 °C. The test solutions consisted of high-salinity brine and low-salinity condensed water. Typical duration was 14 days. Weight loss and localized corrosion data were obtained.
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