Earth fracturing apparatus
US4160412A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 27, 1977 |
| Grant date | Jul 10, 1979 |
| Priority date | — |
| Expiry date | Jun 27, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S102/701
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An earth fracturing apparatus has a casing of reactive metal containing a central, double ended charge load that is simultaneously detonated from both ends; and a pair of opposed end charges at opposite sides of the central charge load, the end charges being concavely dished toward the central charge load and having a liner of reactive metal on the dished face. The end charges are simultaneously peripherally initiated to explode with a collapsing detonation wave toward the central charge load. Void spaces between each end charge and the central charge load contain an oxidizer that may be under pressure. In a modified form of the apparatus, the end charges are omitted and the central charge load alone acts as a perforator for well pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.