Staged steam extraction of in situ bitumen
US10400564B2 · kind B2 · utility
1Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2015 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Jan 23, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/592
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to an in situ staged steam extraction method for removing petroleum products from a heavy oil or bitumen reservoir from subterranean locations. Specifically, each injection stage comprises a different steam composition. A steam composition may consist essentially of steam or may comprise one or more enhanced oil recovery agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.