Delayed breaking of well treatment fluids
US8276667B2 · kind B2 · utility
2Cited by
15References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2008 |
| Grant date | Oct 2, 2012 |
| Priority date | — |
| Expiry date | Dec 3, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/26
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An embodiment of a downhole method of breaking of a well treatment fluid relates to overcrosslinking a polymeric thickener with an overcrosslinking agent such as an excess crosslinking agent and/or an excess alkaline material, wherein either or both the agent and/or material may be encapsulated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.