Corrosion inhibition of aqueous brines
OwnerJohn J. Augsburger, R. Keith Darlingtoninventors
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Abstract
A method and composition for reducing the corrosion effect of aqueous mediums such as brines on ferrous metals by incorporating in the brine an effective amount of a mixture of a sulfur compound wherein the oxidation state of the sulfur is zero or less and a reducing sugar.
Claims14
A method of reducing the corrosive affect of aqueous brine or ferrous metal surfaces exposed to said brine comprising adding to the brine a corrosion inhibiting quantity of a mixture of (1) a sulfur compound wherein the oxidation state of the sulfur is zero or less, said sulfur compound being employed in an amount of at least about 1.0 grams per liter of brine, and (2) a reducing sugar, said reducing sugar being employed in an amount of at least 1.0 grams per liter of brine, said mixture being generally uniformly dispersed in said brine.
A well servicing fluid comprising an aqueous medium and a corrosion inhibiting amount of a mixture of (1) a sulfur compound wherein the oxidation state of the sulfur is zero or less, said sulfur compound being employed in an amount of at least 1.0 grams per liter of said aqueous medium, and (2) a reducing sugar, said sugar being employed in an amount of at least 1.0 grams per liter of said aqueous medium, said mixture being generally uniformly dispersed in said aqueous medium.
Dependencies are inferred from the claim text.