Modified acid compositions as alternatives to conventional acids in the oil and gas industry
US10982133B2 · kind B2 · utility
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21Claims
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Key dates
| Filing date | Dec 19, 2018 |
| Grant date | Apr 20, 2021 |
| Priority date | — |
| Expiry date | Jan 18, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/26
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An aqueous modified acid composition for use in oil industry activities, said composition comprising: an amino acid, an alkanolamine and strong acid wherein the mineral acid:alkanolamine/amino acid are present in a molar ratio of not more than 15:1, preferably not more than 10:1; it can also further comprise a metal iodide or iodate. Said composition demonstrates advantages over known conventional acids and modified acids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.