Polymer emulsions for use in crude oil recovery
US10442980B2 · kind B2 · utility
10Cited by
41References
20Claims
0Family size
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Key dates
| Filing date | Jul 29, 2014 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Jul 29, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/588
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Emulsions of mobility control polymers can be used to increase recovery of crude oil from a subterranean hydrocarbon-containing formation. A flooding fluid comprising the polymer emulsions are injected into a well that is in contact with the subterranean hydrocarbon-containing formation. The polymers can be temporarily cross-linked and have protected shear degradation and improved injectivity into the well; the shear resistance can be measured in terms of viscosity loss due to shear, and the improved injectivity can be measured in terms of the flooding fluid's filter ratio, flow rate, and viscosity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.