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07659 Morphology of Localized Corrosion Attacks in Sour Environments

Picture for 07659 Morphology of Localized Corrosion Attacks in Sour Environments
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Product Number: 51300-07659-SG
ISBN: 07659 2007 CP
Author: Jon Kvarekval
Publication Date: 2007
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$20.00
$20.00
The number of sour oil and gas fields worldwide is increasing, as sweet fields are being depleted and high oil prices vouch for profitable development of sour oil and gas finds. Sour oil and gas production and transport always imply a risk of material damage and shutdowns due to CO2/H2S corrosion, and especially localised corrosion attacks. The mechanisms behind localised CO2/H2S corrosion are not fully explained, with unanswered questions regarding the effect of FeS corrosion film breakdown, contribution of galvanic effects from electronically conductive FeS films to the pit growth, and the effect of steel microstructure on localised corrosion. This paper provides a discussion on the mechanisms of different types of localized H2S/CO2 corrosion attacks, based on observations from laboratory experiments and from the field.
The number of sour oil and gas fields worldwide is increasing, as sweet fields are being depleted and high oil prices vouch for profitable development of sour oil and gas finds. Sour oil and gas production and transport always imply a risk of material damage and shutdowns due to CO2/H2S corrosion, and especially localised corrosion attacks. The mechanisms behind localised CO2/H2S corrosion are not fully explained, with unanswered questions regarding the effect of FeS corrosion film breakdown, contribution of galvanic effects from electronically conductive FeS films to the pit growth, and the effect of steel microstructure on localised corrosion. This paper provides a discussion on the mechanisms of different types of localized H2S/CO2 corrosion attacks, based on observations from laboratory experiments and from the field.
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A comprehensive parametric study was performed using a small-scale laboratory setup with the aim of investigating the occurrence of localized corrosion of mild steel in marginally sour environments.
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