Amidoamine salt-based viscosifying agents and methods of use
US7125825B2 · kind B2 · utility
17Cited by
19References
61Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 25, 2003 |
| Grant date | Oct 24, 2006 |
| Priority date | — |
| Expiry date | Apr 25, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/922
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Viscoelastic surfactants are described for use in aqueous systems to generate thickened fluids. The surfactants are alkyl amidoamine salts of inorganic acids and/or organic acids. The fluids may also contain inorganic salts, organic salts or mixtures thereof. Additionally, the fluids may contain a co-surfactant. These fluids are particularly useful in oilfield applications such as hydraulic fracturing, gravel packing, drilling, completion, etc. Viscoelastic fluids of the invention are also useful in industrial and consumer product fluid applications as rheology control agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.