Wellbore treatment compositions containing foam extenders and methods of use thereof
US8207094B2 · kind B2 · utility
20Cited by
12References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2008 |
| Grant date | Jun 26, 2012 |
| Priority date | — |
| Expiry date | Jul 8, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention relates to fluid compositions used in treating a subterranean formation. In particular, the invention is aqueous wellbore treatment compositions which are foams containing a viscosifying agent, a foam extender, a gas component, and a surfactant, as well as methods of forming such fluids, and uses thereof. The viscosifying agent may be a hydratable polymer, viscoelastic surfactant, or heteropolysaccharide. The foam extender may be a material such as a polyoxyalkyleneamines, ethylenepolyamines, tertiary polyamines, bicarbonate, carbonate, phosphate, or sesquicarbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.