Process for forming an in situ oil shale retort
US4447090A · kind A · utility
2Cited by
1References
9Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Jun 28, 1982 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Jun 28, 2002 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C41/24
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A process is provided for forming an in situ oil shale retort which minimizes channeling, explosion gas turbulence and flame front tilting. In the process, explosives are detonated in an underground formation of oil shale to blast the oil shale into a permeable rubblized mass defining a retort, and gases emitted from the explosion are symmetrically vented. In the preferred form, the gases are vented through vertical vent holes and blast holes which extend through the top of the retort, as well as through a lateral access tunnel which extends into the bottom of the retort.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.