Detonation system for detonating explosive charges in well
US5483895A · kind A · utility
22Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1995 |
| Grant date | Jan 16, 1996 |
| Priority date | — |
| Expiry date | Apr 3, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42D1/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In well perforating operations, it is necessary to detonate shaped charges suspended in the well. To avoid dangerous detonation at the surface, a pressure responsive mechanism is set to respond to a pressure indicative of operation at a selected depth. This pressure setting arms the detonator in cooperation with an electrical arming mechanism operative in response to a selected current flow at a required voltage for a selected interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.