Process for extracting a crude oil with injection of resin
US12384957B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2020 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | Dec 9, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for extracting a crude oil from a rock formation containing crude oil comprises the following steps: The modified alkyl phenol-aldehyde resin may be obtained by Mannich reaction of an alkylphenol-aldehyde condensation resin, with at least one C1-C8 aldehyde and/or at least one C1-C8 ketone, and at least one hydrocarbon compound having at least one alkyl polyamine group having between 1 and 30 carbon atoms. The alkylphenol-aldehyde condensation resin may be obtained by condensation of at least one alkylphenol substituted by at least one linear or branched alkyl group having 1 to 30 carbon atoms, with at least one compound selected from C1-C8 aldehydes and/or C1-C8 ketones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.