High Voltage Explosive Assembly for Downhole Detonations

A downhole explosive tool firing assembly comprising two rigid support structures connected by a flexible link comprising:

• a first support structure for first circuitry that increases an input voltage;
• a second support structure for an electrically active second circuitry charged by said increased voltage, said second circuitry including a capacitor, switch and an electro-explosive initiator, a barrel for an electro-explosive initiator driven flyer and a secondary explosive, wherein the switch is adapted to cause electrical power to flow from the capacitor to the electro-explosive initiator, and where the electro-explosive initiator is adapted to detonate a detonating cord by propelling a flyer into the side of the detonating cord;
• and,
• a flexible, electrically conductive link between said first and second circuitry.