Methods for reducing the viscosity of treatment fluids comprising diutan
US7584791B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2007 |
| Grant date | Sep 8, 2009 |
| Priority date | — |
| Expiry date | Mar 25, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/26
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods are provided that include a method comprising providing a treatment fluid comprising a base fluid and a gelling agent that comprises a diutan composition; providing a breaker that comprises an acid composition; allowing the breaker to interact with the treatment fluid; and allowing the viscosity of the treatment fluid to decrease. In some embodiments, the treatment fluid may comprise a base fluid, a gelling agent that comprises a diutan composition, and a breaker that comprises an acid composition. In some embodiments, the treatment fluid may be introduced into a portion of the subterranean formation at or above a pressure sufficient to create or enhance one or more fractures in the portion of the subterranean formation. Additional methods are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.