Contribution of CO2 on hydrogen evolution and hydrogen permeation in low alloy steels exposed to H2S environment

Plennevaux, C.; Kittel, Jean; Frégonèse, Marion; Normand, Bernard; Ropital, F.; Grosjean, François; Cassagne, Thierry

doi:10.1016/j.elecom.2012.10.010

Cited by 37 publications

(10 citation statements)

References 16 publications

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“…Consequently, it can be assumed that in CO2-saturated solution, corrosion is associated to hydrogen reduction. This corroborates with the observations made by Plennevaux et al [1], albeit with smaller permeation currents measured here due to the differences in sample thickness used.…”

Section: Hydrogen Permeationsupporting

confidence: 94%

See 1 more Smart Citation

Cracking mechanism in API 5L X65 steel in a CO2-saturated environment

Silva

Souza

Pessu

et al. 2019

Engineering Failure Analysis

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Section: Hydrogen Permeationsupporting

confidence: 94%

“…Under specific operating conditions, the risk of hydrogen embrittlement of steels can be one of the primary concerns. The presence of hydrogen sulphide (H2S) in combination with carbon dioxide (CO2) has been shown to enhance the hydrogen charging of carbon steel and increase hydrogen embrittlement susceptibility [1].…”

Section: Introductionmentioning

confidence: 99%

Cracking mechanism in API 5L X65 steel in a CO2-saturated environment

Silva

Souza

Pessu

et al. 2019

Engineering Failure Analysis

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“…Moreover, under the applied stress, the surface activity of the samples gets enhanced, and fractures are more likely to occur [33]. The H 2 S partial pressure also directly affects the pH of the solution [34]. When the partial pressure increases, the corrosion products on the metal surface become loose and they gradually increase the corrosion rate [35,36].…”

Section: Condition Numbermentioning

confidence: 99%

Effect of CO2/H2S and Applied Stress on Corrosion Behavior of 15Cr Tubing in Oil Field Environment

Zhao

Wei²,

et al. 2020

Metals

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The corrosion behavior of a 15Cr-6Ni-2Mo martensitic stainless steel (15Cr stainless steel) in a CO2/H2S environment was investigated by conducting high-temperature/high-pressure immersion tests combined with scanning electron microscopy and metallographic microscopy. The presence of H2S decreased the corrosion resistance of the 15Cr tubing steel. The critical H2S partial pressure (PH2S) for stress corrosion cracking in the 15Cr tubing steel in the simulated oil field environment with a CO2 partial pressure of 4 MPa and an applied stress of 80% σs was identified. The 15Cr tubing steel mainly suffered uniform corrosion with no pitting and cracking when the PH2S was below 0.5 MPa. When the PH2S increased to 1 MPa and the test temperature was 150 °C, the pitting and cracking sensitivity increased. The stress corrosion cracking at a higher PH2S is attributed to the sulfide-induced brittle fracture.

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“…The sour corrosion process can be briefly summarized as anodic metal dissolution (M → M n+ + e − ) followed by the infusion of cathodically-reduced hydrogen (H + + e − → H) in steel [ 9 , 10 , 11 ]. The poisoning effect by H 2 S facilitates the absorption of atomic hydrogen, and the hydrogen could be trapped at certain metallurgical defects in steel [ 9 , 12 , 13 ]. According to internal pressure theory [ 14 ], which has been widely accepted as a mechanism of HE in steels, the continuous trapping of atomic hydrogens tends to recombine into molecular hydrogen (H + H → H 2 ) and leads to significant volume expansion, resulting in the nucleation of cracks.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen-Induced Cracking Caused by Galvanic Corrosion of Steel Weld in a Sour Environment

2021

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This study examined the hydrogen-induced cracking (HIC) caused by galvanic corrosion of an ASTM A516-65 steel weld in a wet sour environment using a combination of standard immersion corrosion test, electrochemical analyses, and morphological observation of corrosion damage. This study showed that the weld metal has lower open circuit potential, and higher anodic and cathodic reaction rates than the base metal. The preferential dissolution and much higher density of localized corrosion damage were observed in the weld metal of the welded steel. On the other hand, the presence of weldment can make steel more susceptible to HIC, specifically, in areas of the base metal but not in the weld metal or heat affected zone, which is in contrast to typical expectations based on metallurgical knowledge. This can be explained by galvanic corrosion interactions between the weldment and the base metal, acting as a small anode and a large cathode, respectively. This type of galvanic couple can provide large surface areas for infusing cathodically-reduced hydrogen on the base metal in wet sour environments, increasing the susceptibility of welded steel to HIC.

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Contribution of CO2 on hydrogen evolution and hydrogen permeation in low alloy steels exposed to H2S environment

Cited by 37 publications

References 16 publications

Cracking mechanism in API 5L X65 steel in a CO2-saturated environment

Cracking mechanism in API 5L X65 steel in a CO2-saturated environment

Effect of CO2/H2S and Applied Stress on Corrosion Behavior of 15Cr Tubing in Oil Field Environment

Hydrogen-Induced Cracking Caused by Galvanic Corrosion of Steel Weld in a Sour Environment

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