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US 12,716,021 B2Granted
Aqueous modified acid compositions and methods of using the same
AssigneeDorf Ketal Chemicals Fze
InventorsClay Purdy, Markus Weissenberger, Cora Gordos
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Abstract
An aqueous modified or synthetic acid compositions comprising: an acid; and a first component comprising: an amine and a carboxylic acid group; wherein said first component and said acid are present in a molar ratio ranging from 1:3 to 1:15, more preferably from 1:3 to 1:12.5. Said acid compositions are useful in acidizing or stimulating dolomite formations. Said acid compositions are also useful in creating wormholes in hydrocarbon-containing formations.
Claims10
An aqueous modified acid composition consisting of:
- hydrochloric acid;
- water;
- arginine;
- and
- a compound comprising an amine and a sulfonic acid group,
- wherein the arginine and the hydrochloric acid are present in a molar ratio ranging from 1:3 to 1:12.5.
3 more elements
Dependencies are inferred from the claim text.