Using synthetic acid compositions as alternatives to conventional acids in the oil and gas industry
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United States of America Patent
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Aug 24, 2021
Grant Date -
Sep 26, 2019
app pub date -
Jul 28, 2017
filing date -
Jul 29, 2016
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Abstract
An aqueous synthetic acid composition is disclosed for use in oil industry activities, the composition comprising: 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 can also further comprise a metal iodide or iodate an alcohol or derivative thereof. The composition demonstrates advantageous properties over known 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 as compared to conventional mineral acids such as HCl.
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