Redundant firing mechanism for a well perforating gun
Patent
·
OSTI ID:5179234
A perforating gun is described for perforating the casing and adjacent production formation of a subterranean well, comprising: a hollow housing containing a plurality of vertically spaced impact detonatable primers; a gun structure depending from the hollow housing and mounting vertically spaced shaped charges; a primer cord in communication with each of the shaped charges; means for transmitting the detonating energy of each of the primers to the primer cord. The hollow housing defines a fluid pressure chamber; means for supplying fluid pressure to the fluid pressure chamber for detonating the lower one of the primers, and firing means independent of the fluid pressure actuated means actuable by a free fall detonating means for impacting the upper one of the primers; whereby the upper primer may be detonated in the event the lower primer falls to detonate.
- Assignee:
- Baker Oil Tools, Inc., Orange, CA
- Patent Number(s):
- US 4610312
- OSTI ID:
- 5179234
- Country of Publication:
- United States
- Language:
- English
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