E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/10
E21B 7/00 (2006.01)
Patent
CA 1107637
ABSTRACT OF THE DISCLOSURE Method and apparatus for perforating an earth formation from a well bore wherein each perforator unit of a perforator gun utilizes the combination of a shaped charge and a bullet and the perforator unit is adapted to fire the shaped charge responsive to detonation of deton- ating cord and the bullet is fired responsive to the fir- ing of the shaped charge. -2-
333062
Bullard Gerald D.
Smart & Biggar
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