E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/116 (2006.01) E21B 43/11 (2006.01)
Patent
CA 2566200
A firing head for a perforating gun for use in downhole applications. The firing head comprises a sub having a first end and a second end, a pin located in the sub and having a head located adjacent to the second end of the sub, a detonating block removably coupled to the second end of the sub and having a first chamber that receives the head of the pin and a detonating chamber that is structured and arranged to be adjacent to a detonating material in the perforating gun and further having a retainer located between the first chamber and the detonating chamber, a detonator located in the retainer and extending into the detonating chamber, and at least one venting passage in the detonating block extending from the detonating chamber to an exterior of the detonating block. The detonator has an arming mechanism that is located in the first chamber in selective contact with the head of the pin.
Computalog Ltd.
Ridout & Maybee Llp
Weatherford Canada Partnership
LandOfFree
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