Delayed gelling agents
US10323174B2 · kind B2 · utility
8Cited by
8References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 6, 2017 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | Nov 6, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/138
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention is directed to delayed gelation agents comprising a degradable polymeric cage containing therein one or more gelation agents. The cage degrades in situ, e.g., in an oil reservoir, thus releasing the gelation agent(s), which can then crosslink second polymers in situ to form a gel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.