Oil sand extraction process with in-line middlings aeration and recycle
US5460270A · kind A · utility
10Cited by
27References
1Claims
0Family size
Assignees
- Alterra Energy, LLC
- Canadian Occidental Petroleum Ltd.
- Esso Resources Canada Limited
- Gulf Canada Resources Limited
- Her Majesty the Queen in right of the Province of Alberta, as represented by the Minister of Energy and Natural Resources
- HBOG-Oil Sands Limited
- Pan Canadian Petroleum Limited
- PETRO-CANADA
- Mocal Energy Limited
Inventors
Key dates
| Filing date | Sep 1, 1993 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Sep 1, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/75
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Middlings from the primary separation vessel ("PSV") are recycled through a line to the PSV. The middlings are aerated with fine air bubbles using in line eductor/aerator assemblies. The aerated middlings are mixed as they are pumped through a line back to the PSV. Bitumen recovery from the PSV is increased as a result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.