Initiation of explosive devices
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United States of America Patent
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-
May 14, 2002
Grant Date -
N/A
app pub date -
Sep 23, 1999
filing date -
Sep 24, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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