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US 4,997,583 AGranted
Method for protecting carbon steel from corrosion in heavy brines
AssigneeBromine Compounds Ltd.
InventorDavid Itzhak
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Abstract
A method is described for the inhibition of corrosion of carbon steels due to heavy brine corrosive attack, which employs As.sup.+z -containing composition. Corrosion inhibiting compositions comprising As.sup.+z, alone or in admixture with urea as a synergistic inhibitor, are also described.
Claims18
A method for protecting carbon steel for use in oil wells from corrosion attack due to heavy clear brines corrosive behavior, comprising providing in the brine an inhibiting effective amount of As.sup.+z ion, the value of z being comprised between 1 and 5, alone or in admixture with about 0.5 wt% to about 1 wt% of urea.
Dependencies are inferred from the claim text.