Method for controlling the migration of formation fines
US12391865B2 · kind B2 · utility
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3References
20Claims
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Key dates
| Filing date | Aug 11, 2021 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Oct 29, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/138
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for limiting and/or preventing the migration of fines in a geological formation, in particular a subterranean formation, the method including bringing the formation into contact with one or more copolymers including at most 40 mol % of repeating units derived from a cationic monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.