Thermal generator for downhole tools and methods of igniting and assembly
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United States of America Patent
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Aug 9, 2005
Issued Date -
N/A
app pub date -
Mar 26, 2003
filing date -
Sep 19, 2001
priority date (Note) -
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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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