Method for treating wellbore in a subterranean formation with high density brines and complexed metal crosslinkers
US8853135B2 · kind B2 · utility
13Cited by
58References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2009 |
| Grant date | Oct 7, 2014 |
| Priority date | — |
| Expiry date | Jul 31, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/887
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention discloses a method of treating a wellbore by providing an aqueous mixture of a hydrated polysaccharide with a salt; adding to the mixture a cross-linking agent for cross-linking the hydrated polysaccharide, wherein the cross-linking agent comprises a zirconium compound, glutamic acid, and a polyol; pumping the aqueous mixture of the hydrated polysaccharide and the cross-linking agent into the wellbore; and cross-linking the hydrated polysaccharide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.