Surface blocking agents
US10894913B1 · kind B1 · utility
0Cited by
1References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 8, 2018 |
| Grant date | Jan 19, 2021 |
| Priority date | — |
| Expiry date | Jan 31, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Injectates and method that use surface blocking agents for enhancing subterranean oil recovery are disclosed. The surface blocking agents reduce the adhesion of oil to rock surfaces thereby increasing oil recovery. The surface blocking agents attach to or are attracted to the oils positive nitrogen sites and have an opposing negative charge that is repulsed by the negative rock surface charge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.