Internal breaker for oilfield fluids
US7287590B1 · kind B1 · utility
13Cited by
23References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2006 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | Sep 18, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/921
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Delayed breakers are given that break viscoelastic surfactant fluids inside the pores of formations into which the fluids have been injected. The breakers comprise proteins, proteins that contain breakers, or cells that contain breakers. Proteins become breakers, and proteins and cells release breakers, due to a triggering mechanism that may be, for example, a change in temperature, pH, or salinity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.