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US 7,842,127 B2Granted
Corrosion inhibitor composition comprising a built-in intensifier
AssigneeNalco Company
InventorMark A. Malwitz
Life of this patent
Estimating the term…
Abstract
A corrosion inhibitor composition comprising one or more organic solvents, one or more corrosion inhibitor intermediates and about 0.1 to about 20 weight percent of one or more iodide salts dissolved in said composition and methods of using the corrosion inhibitor composition in acid fracturing and matrix acid stimulation of subterranean formations.
Claims19
A corrosion inhibitor composition comprising
- (a) from at least 20 weight percent to about 60 weight percent of one or more organic solvents, wherein the organic solvent is selected from the group consisting of:
- isopropanol, methanol, ethanol, 1-butanol, iso-butanol, tert-butanol, acetonitrile, dimethylformamide, formamide, acetonitrile, acetone, and combinations thereof;
- (b) one or more corrosion inhibitor intermediates;
- and
- (c) about 0.1 to about 20 weight percent of one or more iodide salts dissolved in said composition;
- wherein said composition excludes added acid and is resistant to precipitate formation or separation and wherein the composition is uniform in appearance.
3 more elements
A corrosion inhibitor composition consisting of
- (a) one or more organic solvents selected from the group consisting of:
- isopropanol, methanol, ethanol, 1-butanol, iso-butanol, tert-butanol, acetonitrile, dimethylformamide, formamide, acetonitrile, acetone, and combinations thereof;
- (b) one or more corrosion inhibitor intermediates;
- (c) one or more dispersants and/or surfactants;
- (d) about 0.1 to about 20 weight percent of one or more iodide salts dissolved in said composition;
- and
- (e) optionally water, wherein said composition excludes added acid and is resistant to precipitate formation or separation and wherein the composition is uniform in appearance.
4 more elements
Dependencies are inferred from the claim text.