Using synthetic acid compositions as alternatives to conventional acids in the oil and gas industry
US11447692B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2020 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Apr 20, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/32
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.