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09483 Erosion-Corrosion in Oil and Gas – Stainless Steel Under De-Aerated Slurry Impingement Attack

Picture for 09483 Erosion-Corrosion in Oil and Gas – Stainless Steel Under De-Aerated Slurry Impingement Attack
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Product Number: 51300-09483-SG
ISBN: 09483 2009 CP
Author: Staffan Hertzman, Xinming Hu, Inga B. M. Bargmann, Anne Neville and Faisal Reza
Publication Date: 2009
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Stainless steels are known for their excellent corrosion properties when they can rely on their passive film. Passivity is attributed to a self-healing oxide “passive” layer on the metallic surface with a thickness of around 2-4 nm [1], that establishes as soon as it is exposed to an oxygen-containing environment. The response of passivating materials to the combined attack of erosion and corrosion is still not well understood for materials exposed to oil and gas production environments that are saturated with CO2.

In this study a superaustenitic stainless steel was tested under erosion-corrosion attack in deaerated and carbon dioxide saturated artificial seawater. The focus was on understanding the role of the surface film and the influence of changing velocity and solid loading. The contribution of both erosion and corrosion will be analysed and integrated electrochemical measurements are used to enable the corrosion rate to be assessed as a function of solid content and flow velocity.

Keywords: Erosion-corrosion, stainless steel, de-aerated artificial seawater
Stainless steels are known for their excellent corrosion properties when they can rely on their passive film. Passivity is attributed to a self-healing oxide “passive” layer on the metallic surface with a thickness of around 2-4 nm [1], that establishes as soon as it is exposed to an oxygen-containing environment. The response of passivating materials to the combined attack of erosion and corrosion is still not well understood for materials exposed to oil and gas production environments that are saturated with CO2.

In this study a superaustenitic stainless steel was tested under erosion-corrosion attack in deaerated and carbon dioxide saturated artificial seawater. The focus was on understanding the role of the surface film and the influence of changing velocity and solid loading. The contribution of both erosion and corrosion will be analysed and integrated electrochemical measurements are used to enable the corrosion rate to be assessed as a function of solid content and flow velocity.

Keywords: Erosion-corrosion, stainless steel, de-aerated artificial seawater
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