Aqueous-based wellbore fluids
US11603486B2 · kind B2 · utility
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2References
17Claims
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Assignee
Inventors
Key dates
| Filing date | Nov 27, 2008 |
| Grant date | Mar 14, 2023 |
| Priority date | — |
| Expiry date | Nov 27, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides a wellbore fluid which comprises an aqueous continuous phase and, dissolved in said aqueous continuous phase, at least one salt containing an imidazolium cation having at least 6 carbon atoms, and a method of carrying out a wellbore operation, which comprises introducing into a wellbore in a clay-containing formation, a wellbore fluid according to the invention. The described salts are effective shale inhibitors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.