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Galvanic Corrosion - dissimilar materials
Posted 12 sept. 2013, 07:46 UTC−4 0 Replies
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A plug made of 4140 material has been set at 4,200m deep in an oil & gas well at 320degF. The subject plug is surrounded by Nickel Alloy 718 13% Chrome and SM2535 material. The fluid environment is quite corrosive with H2S pp>0.1bar and CO2 pp>0.2bar. There is a high concern about galvanic corrosion due to dissimilar material. The question is whether the galvanic corrosion will act on the 4140 material plug and damage the same relatively quickly. I would like to know if this type of galvanic corrosion could be modeled in COMSOL and the rate of corrosion plotted vs time as to get a better idea on the time the plug is likely to fail. I would also like to know how difficult the modeling would be (duration) and whether there is a particular company or individual specialized in this type of modeling that could assist us at this time.
Your inputs are appreciated.
Sincerely
Pedro
Hello Pedro Garcia
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