High stability polymer compositions with poly(alkyl)acrylate compounds for enhanced oil recovery applications
US11959018B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Jun 29, 2018 |
| Grant date | Apr 16, 2024 |
| Priority date | — |
| Expiry date | Dec 9, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/88
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
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 poly(alkyl)acrylate compounds. 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.