INITIATION OF EXPLOSIVE DEVICES

摘要

A perforating gun (15) or other downhole tool includes one or more explosive devices (20) that are activable by corresponding one or more initiator devices (21), such as capacitor discharge units (CDUs). Each CDU (21) includes an explosive foil initiator (EFI) (22) or some other type of a high-energy bridge-type initiator, an energy source (18) (e.g., a slapper capacitor), and a switch (62) coupling the energy source (18) and the EFI (22) or other bridge-type initiator. An electrical cable (17) is coupled to the CDUs (21) for providing a voltage to energize the energy source (18) in the CDUs (21) to provide energy to each EFI (22). In response to activation of a trigger signal down the electrical cable (17), the switch (62) is closed to couple the energy source (18) to the EFI (22).