Detonator
AssigneeSchlumberger Technology Corporation
InventorsWallace E. Voreck, Wenbo Yang
Life of this patent
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Abstract
A detonator includes a pyrotechnic material and a first explosive. The pyrotechnic material ignites in response to a percussive impact, and the explosive detonates in response to the ignition of the pyrotechnic material. The detonator may include a plate, and the plate forms a projectile in response to energy released by the ignition of the pyrotechnic material to detonate an additional explosive. A passageway of the detonator may be located between these explosives, and the passageway may include a cross-sectional profile that substantially varies along a path between the explosives.
Claims14
A detonator comprising:
- a first pyrotechnic material to ignite in response to a percussive impact;
- a first retainer to cause a pressure to increase in response to burning of the first pyrotechnic material and rupture in response to the pressure exceeding a threshold;
- a plate to respond to the rupturing of the first retainer to form a projectile to detonate a first explosive;
- a charge responsive to the rupturing of the first retainer to ignite and generate pressure to form the projectile from the plate.
A detonator comprising:
- a first pyrotechnic material to ignite in response to a percussive impact;
- a first retainer to cause a pressure to increase in response to burning of the first pyrotechnic material and rupture in response to the pressure exceeding a threshold;
- a plate to respond to the rupturing of the first retainer to form a projectile to detonate a first explosive;
- a second explosive;
- and
- a passageway located between the first explosive and the second explosive, the passageway including an opening to route the detonation wave from the first explosive to the second explosive, a cross-sectional profile of the opening substantially varying along a path from the first explosive to the second explosive.
A detonator comprising:
- a first pyrotechnic material to ignite in response to a percussive impact;
- a first retainer to cause a pressure to increase in response to burning of the first pyrotechnic material and rupture in response to the pressure exceeding a threshold;
- a plate to respond to the rupturing of the first retainer to form a projectile to detonate a first explosive;
- and
- a second pyrotechnic material to ignite in response to the rupture of the retainer and directly produce the pressure to from the projectile from the plate.
A detonator comprising:
- a first pyrotechnic material to ignite in response to a percussive impact;
- a first retainer to cause a pressure to increase in response to burning of the first pyrotechnic material and rupture in response to the pressure exceeding a threshold;
- a plate to respond to the rupturing of the first retainer to form a projectile to detonate a first explosive;
- and
- a second retainer adapted to be contacted by the projectile to detonate the first explosive.
Dependencies are inferred from the claim text.