Compositions for oil recovery and methods of their use
US8857527B2 · kind B2 · utility
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23References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2009 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Dec 20, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Embodiments of the present disclosure include compositions for use in enhanced oil recovery, and methods of using the compositions for recovering oil. Compositions of the present disclosure include a nonionic, non-emulsifying surfactant having a CO2-philicity in a range of about 1.5 to about 5.0, carbon dioxide in a liquid phase or supercritical phase, and water, where the nonionic, non-emulsifying surfactant promotes a formation of a stable foam formed of carbon dioxide and water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.