Blending tar sands to provide feedstocks for hot water process
US4474616A · kind A · utility
21Cited by
1References
3Claims
0Family size
Assignees
- Petro-Canada Exploration, Inc.
- Her Majesty the Queen in right of the Province of Alberta, as represented by the Minister of Energy and Natural Resources
- Pan Canadian Petroleum Limited
- Esso Resources Canada Limited
- Canada-Cities Service, Ltd.
- Gulf Canada Limited
- Alterra Energy, LLC
- Hudson's Bay Oil and Gas Company Limited
- Petrofina Canada Inc.
Inventors
Key dates
| Filing date | Dec 13, 1983 |
| Grant date | Oct 2, 1984 |
| Priority date | — |
| Expiry date | Dec 13, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/047
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Two or more tar sand feeds are blended in specified proportions in combination with a specified dosage of NaOH to provide a slurry, having a free surfactant content dissolved in the aqueous phase of the slurry, which yields the maximum possible primary froth production from the hot water extraction process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.