Enhanced recovery of oil from a dipping subterranean oil-bearing reservoir using light hydrocarbon and carbon dioxide
US4136738A · kind A · utility
22Cited by
11References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1977 |
| Grant date | Jan 30, 1979 |
| Priority date | — |
| Expiry date | Aug 24, 1997 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Recovery of oil from a dipping subterranean oil-bearing reservoir is effected by the injection of a first slug of a light hydrocarbon at a high rate to insure mixing with the reservoir oil adjacent the injection well followed by the injection of a second slug of carbon dioxide at a low rate to form a conditionally miscible transition zone with the altered reservoir oil and thereafter by the injection of a drive agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.