Method of in-situ recovery of viscous oils or bitumen utilizing a thermal recovery fluid and carbon dioxide
US4217956A · kind A · utility
39Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1978 |
| Grant date | Aug 19, 1980 |
| Priority date | — |
| Expiry date | Sep 14, 1998 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/24
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for the in-situ recovery of viscous oils or bitumen from subterranean oil-bearing formations by the injection of steam or a mixture of steam and an oxygen-containing gas under operating conditions that utilize pressurization and drawdown cycles wherein carbon dioxide is injected at the start of the pressurization cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.