E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 49/04 (2006.01)
Patent
CA 2050183
ABSTRACT OF THE DISCLOSURE An igniter is set forth in the present disclosure for use with a coring gun assembly. A bullet equipped with a bottom and having an O-ring thereabout is positioned in a chamber at one end thereof for firing to take a core sample. At the opposite end, an igniter is positioned in the chamber resting primarily on a shoulder aligning an elongate cylindrical shell within the chamber and having an external O-ring for sealing purposes. An elongate electrically insulated conductive firing pin extends through said shell so that an external circuit can be connected thereto to create a firing pulse. The current flows through the pin and through a bridgewire disc positioned at the end of the pin which in turn ignites a prepackaged cylindrical explosive charge to fire the bullet. HLS 89.130
Barker James M.
Tomek Martin L.
Halliburton Logging Services Inc.
Swabey Ogilvy Renault
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