RF in situ heating of heavy oil in combination with steam flooding
US5109927A · kind A · utility
44Cited by
5References
7Claims
0Family size
Inventors
Key dates
| Filing date | Jan 31, 1991 |
| Grant date | May 5, 1992 |
| Priority date | — |
| Expiry date | Jan 31, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/24
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A subterranean hydrocarbon-bearing formation is preheated by application of RF energy to the formation so that subsequent steam flooding will more effectively sweep the hydrocarbons from the formation without steam override occurring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.