Method for extracting and upgrading of heavy and semi-heavy oils and bitumens
US7947165B2 · kind B2 · utility
12Cited by
13References
17Claims
0Family size
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Key dates
| Filing date | Sep 14, 2005 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Feb 8, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S208/952
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Improvements in the selective extraction of relatively low molecular weight oils from coal, coal liquids, oil shales, shale oils, oil sands, heavy and semi-heavy oils, bitumens, and the like are provided by a continuous process involving contacting the material to be treated with supercritical water in a continuous operation at pressures of from 500 psi to 3000 psi, temperatures of 250° C. to 450° C., and in-reactor dwell times generally in excess of 25 seconds and up to 10 minutes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.