Methods of activating enzyme breakers
US9803130B2 · kind B2 · utility
1Cited by
27References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2013 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Oct 23, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of treating a subterranean formation, the method including placing a well treatment fluid comprised of at least an enzyme and a breaker additive in the subterranean formation. Initially, the pH of the well treatment fluid is about 11.5. The breaker additive reduces the pH of the well treatment fluid by at least 1.5 to increase the activity of enzyme and accelerate hydrolysis of a crosslinkable component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.