Methods of deresinating crude oils using carbon dioxide
US7622035B2 · kind B2 · utility
9Cited by
7References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2001 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Sep 13, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G21/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of deresinating a crude oil comprises contacting the crude oil with a carbon dioxide containing fluid, the crude oil having an initial API gravity and comprising an oil phase, resins, and asphaltenes, and wherein the carbon dioxide containing fluid enters the oil phase of the crude oil in a manner such that the resins and asphaltenes precipitate out of the crude oil such that the final API gravity of the crude oil is higher than the initial API gravity of the crude oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.