Using synthetic acid compositions as alternatives to conventional acids in the oil and gas industry
AssigneeFluid Energy Group Ltd.
InventorsClay Purdy, Alexander David Jamieson, Markus Weissenberger
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Abstract
An aqueous synthetic acid composition is provided for use in oil industry activities. The composition comprises: lysine and hydrogen chloride in a molar ratio ranging from 1:3 to 1:12.5, preferably from more than 1:5 to 1:8.5. The composition may further comprise a metal iodide or iodate and an alcohol or derivative thereof. The composition demonstrates advantageous properties for synthetic acids at temperatures above 90° C. The composition is useful in various oil and gas industry operations. Preferred embodiments of the composition provide substantial advantages in matrix acidizing by increasing the effectiveness of wormholing.
Claims13
An aqueous synthetic acid composition comprising:
- lysine and hydrogen chloride in a molar ratio ranging from 1:6 to 1:12.5, wherein said composition is stable at temperatures of up to 220° C. and stable up to pH 5.5 in the presence of solubilized iron.
Dependencies are inferred from the claim text.