Initiation of explosive devices
US6386108B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Sep 23, 1999 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Sep 23, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B3/198
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A perforating gun or other downhole tool includes one or more explosive devices that are activable by corresponding one or more initiator devices, such as capacitor discharge units (CDUs). Each CDU includes an explosive foil initiator (EFI) or some other type of a high-energy bridge-type initiator, an energy source (e.g., a slapper capacitor), and a switch coupling the energy source and the EFI or other bridge-type initiator. An electrical cable is coupled to the CDUs for providing a voltage to energize the energy source in the CDUs to provide energy to each EFI. In response to activation of a trigger signal down the electrical cable, the switch is closed to couple the energy source to the EFI.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.