Fluids comprising chitosan crosslinked by titanate
US9034803B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2011 |
| Grant date | May 19, 2015 |
| Priority date | — |
| Expiry date | Sep 9, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/685
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The current application discloses fluids and methods for treating a subterranean formation penetrated by a wellbore. In one aspect, there is provided a fluid comprising chitosan and titanate, where the fluid has an increased viscosity compared with a solution containing chitosan without titanate. In another aspect, there is provided a method of using such fluid to treat a subterranean formation penetrated by a wellbore. The method may comprise mixing chitosan and titanate in a carrying medium, forming a gel comprising chitosan and titanate, introducing the gel into a subterranean formation, and treating the subterranean formation with the gel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.