Process for enlargement of rock fractures
US4408663A · kind A · utility
3Cited by
8References
8Claims
0Family size
Inventor
Key dates
| Filing date | Sep 9, 1981 |
| Grant date | Oct 11, 1983 |
| Priority date | — |
| Expiry date | Sep 9, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42D3/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for enlarging or widening rock fractures in order to facilitate the recovery of deposits, such as oil or gas, comprising the emplacement of an aluminothermic mixture of aluminum and ferric oxide, and its subsequent ignition. Preferably, slag-forming products are also placed into the cavity, so as to prevent closure of the fractures after termination of the combustion process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.