Thermal generator for downhole tools and methods of igniting...

Ammunition and explosives – Igniting devices and systems – Propellant ignitors

Reexamination Certificate

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Details

C166S297000, C166S055000, C166S063000

Reexamination Certificate

active

06925937

ABSTRACT:
An ignition device for a downhole tool includes a body with a cavity, a thermite material and a resistive element within the cavity. The resistive element, which is heated to the high temperature needed for ignition of the thermite material, has a non-galvanic outer surface at the ignition temperature. A large amount of electrical power is required to reach the ignition temperature, making the device safe and unlikely to accidentally ignite. The device has an electrical connector that is located within a sealed chamber when downhole.

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