Polyamide emulsifier based on polyamines and fatty acid/carboxylic acid for oil based drilling fluid applications
US8765644B2 · kind B2 · utility
2Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 2009 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Jan 20, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L77/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention generally relates to emulsifiers for oil-based drilling fluids and muds comprising an emulsifier based on the polyamides derived from fatty acid/carboxylic acid and optionally alkoxylated polyamines. The invention also relates to oil or synthetic based drilling fluids comprising the emulsifiers of the invention and to drilling methods utilizing same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.