Delayed gelation of polymers
US11884881B2 · kind B2 · utility
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14References
18Claims
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Key dates
| Filing date | Jun 10, 2022 |
| Grant date | Jan 30, 2024 |
| Priority date | — |
| Expiry date | Jun 10, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/512
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The disclosure is directed to methods and compositions delaying the gelation of polymers in water flooding by sequentially or co-injecting a carboxylate-containing polymer solution, a gel-delaying polymer, and gelation agent into a hydrocarbon reservoir. Delays of weeks are observed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.