Oil recovery method for waxy crude oil using alkylaryl sulfonate surfactants derived from alpha-olefins and the alpha-olefin compositions
US6269881A · kind A · utility
134Cited by
14References
13Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 17, 1999 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Dec 17, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/904
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An oil recovery process is disclosed which uses a particular class of alkylaryl sulfonate surfactants. The surfactants are derived from an alpha-olefin stream having a broad distribution of even carbon numbers ranging from 12 to 58. The olefin stream is reacted with aromatic feedstock, such as benzene, toluene, xylene, or a mixture thereof to form alkylates, and then reacted with SO3 to form sulfonic acids. The resulting surfactant has high solubilization and ultra-low interfacial tension with crude oils, especially waxy crude oil, having a broad distribution of carbon numbers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.