C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
C23F 13/02 (2006.01)
Patent
CA 2694016
A method for inhibiting corrosion in at least one required region of an elongate metal structure, comprising applying a high-frequency electromagnetic signal to the structure in a manner such that a voltage standing wave is established in the structure with a corrosion-inhibiting potential at the required region(s) of the structure. The method is advantageously applied to an oil well riser pipe, to inhibit corrosion of the external surface thereof in the vicinity of an oil production zone.
L'invention concerne un procédé pour inhiber la corrosion dans au moins une région requise d'une structure métallique allongée, le procédé comprenant l'application d'un signal électromagnétique haute fréquence à la structure de telle sorte qu'une onde de tension stationnaire est établie dans la structure avec un potentiel inhibant la corrosion au niveau de la ou des régions requises de la structure. Le procédé est avantageusement appliqué à une colonne montante de puits de pétrole, pour inhiber la corrosion de la surface externe de celle-ci au voisinage d'une zone de production de pétrole.
Hydropath Holdings Limited
Ridout & Maybee Llp
LandOfFree
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