In situ combustion process for the recovery of liquid carbonaceous fuels from subterranean formations
US4273188A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1980 |
| Grant date | Jun 16, 1981 |
| Priority date | — |
| Expiry date | Apr 30, 2000 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/243
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An integrated in situ combustion process for recovering subterranean liquid and solid carbonaceous deposits in which the resulting flue gas of low heating value is combusted at substoichiometric conditions over two different oxidation catalysts in two combustion zones in series and is expanded in a gas turbine which drives the air compressor for injecting the combustion air into the underground carbonaceous deposit. One of the oxidation catalysts comprising platinum and at least one metal cocatalyst selected from Groups IIA and VIIB, Group VIII up through atomic No. 45, the lanthanides, chromium, zinc, silver, tin and antimony is provided to reduce the carbon monoxide in the combusted flue gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.