Environmentally benign viscous well treating fluids and methods
US7000702B2 · kind B2 · utility
9Cited by
5References
53Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2003 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Apr 14, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/26
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Environmentally safe viscous well treating fluids and methods are provided by the present invention. The treating fluids are basically comprised of water, a viscosity producing polymer, a boron cross-linking agent for cross-linking the polymer, and a delayed cross-link delinker that chelates the boron and breaks the treating fluid into a low viscosity fluid selected from polysuccinamide and polyaspartic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.