Fluid pressure actuated firing mechanism for a well perforating gun
Patent
·
OSTI ID:5178781
The method is described of firing a well perforating gun having an impact detonatable primer at one end of a fluid pressure chamber and a hammer slidably and sealably mounted in the chamber and releasably secured in spaced relation to the primer. The method consists of: (1) providing fluid connection between opposite ends of the fluid pressure chamber and a source of pressured fluid; (2) trapping pressured fluid entering the end of the fluid pressure chamber remote from the primer charge; (3) reducing the pressure of the fluid pressure source to create an increasing fluid pressure differential on the hammer urging the hammer toward the primer; and (4) releasing the hammer to impact the primer when the fluid pressure differential acting on the hammer reaches a predetermined level.
- Assignee:
- Baker Oil Tools, Inc., Houston, TX
- Patent Number(s):
- US 4606409
- OSTI ID:
- 5178781
- Country of Publication:
- United States
- Language:
- English
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