Corrosion inhibition package
AssigneeDorf Ketal Chemicals Fze
InventorsClay Purdy, Markus Weissenberger
Life of this patent
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Abstract
A corrosion inhibition package for use with an aqueous acid composition, said package comprising: a terpene; a cinnamaldehyde or a derivative thereof; at least one amphoteric surfactant; and a solvent. Also disclosed are compositions comprising said corrosion inhibitor package. Preferably, the corrosion inhibition package meets the environmental requirements for classification as yellow according to the Norwegian North Sea offshore drilling regulatory requirements.
Claims13
An aqueous synthetic or modified acidic composition comprising
- a corrosion inhibitor package,
- an acid composition comprising an acid selected from the group consisting of mineral acids;
- organic acids, synthetic acids;
- modified acids;
- complexed acids and combinations thereof, and
- wherein said corrosion inhibitor package comprises,
- a terpene in an amount ranging from 5% to 30% by volume of the total volume of the corrosion inhibition package;
- a cinnamaldehyde or a derivative thereof in an amount ranging from 5% to 30% by volume of the total volume of the corrosion inhibition package;
- at least one amphoteric surfactant in an amount ranging from 2% to 20% by volume of the total volume of the corrosion inhibition package;
- an anionic surfactant which is β-Alanine, N-(2-carboxyethyl)-N-dodecyl-, sodium salt (1:1);
- and
- a solvent in an amount ranging from 25% to 80% by volume of the total volume of the corrosion inhibition package;
- wherein the volume % of the corrosion inhibition package in the aqueous synthetic or modified acidic composition ranges from 0.1 to 10%,
- and wherein the terpene is selected from the group consisting of citral and ocimene, the at least one amphoteric surfactant is cocamidopropyl betaine, and the solvent is selected from the group consisting of:
- isopropanol;
- methanol;
- ethanol;
- 2-butoxyethanol;
- diethylene glycol;
- a short chain ethoxylate;
- and combinations thereof.
A corrosion inhibition package for use with an aqueous synthetic or modified acidic composition comprising
- a corrosion inhibitor component, wherein said corrosion inhibitor component comprises
- a terpene present in an amount ranging from 5% to 30% by volume of the total volume of the corrosion inhibition package;
- a cinnamaldehyde or a derivative thereof present in an amount ranging from 5% to 30% by volume of the total volume of the corrosion inhibition package;
- at least one amphoteric surfactant present in an amount ranging from 2% to 20% by volume of the total volume of the corrosion inhibition package, wherein the at least one amphoteric surfactant is selected from the group consisting of an amido betaine surfactant, an amido sultaine surfactant, and combinations thereof,
- an anionic surfactant which is β-Alanine, N-(2-carboxyethyl)-N-dodecyl-, sodium salt (1:1);
- and
- a solvent present in an amount ranging from 25% to 80% by volume of the total volume of the corrosion inhibition package,
- wherein the terpene is selected from the group consisting of citral and ocimene, and the at least one amphoteric surfactant is cocamidopropyl betaine and wherein the solvent is selected from the group consisting of isopropanol;
- methanol;
- ethanol;
- 2-butoxyethanol;
- diethylene glycol;
- a short chain ethoxylate;
- and combinations thereof.
A corrosion inhibition package for use with an aqueous acid composition, said corrosion inhibition package comprising
- a corrosion inhibitor component, wherein said corrosion inhibitor component consists of a terpene;
- a cinnamaldehyde or a derivative thereof, at least one amphoteric surfactant;
- an anionic surfactant which is β-Alanine, N-(2-carboxyethyl)-N-dodecyl-, sodium salt (1:1);
- and a solvent.
Dependencies are inferred from the claim text.