High stability polymer compositions for enhanced oil recovery applications
US12351757B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2022 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Jan 10, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed are methods of using liquid polymer and inverse emulsion compositions comprising one or more hydrophobic liquids having a boiling point at least about 100° C.; one or more acrylamide-(co)polymers; one or more emulsifier surfactants; one or more inverting surfactants; and one or more stabilizing agents (e.g., one or more siloxane polyether compounds, one or more poly(alkyl)acrylate compounds, or any combination thereof). When the composition is inverted in an aqueous solution, it provides an inverted solution having a filter ratio using a 1.2 micron filter (FR1.2) of about 1.5 or less. The inverted solutions can be used in oil and gas operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.