Internal air release control apparatus air gun

Details Internal air release control apparatus air gun Internal air release control apparatus air gun

1979-04-04

1980-09-30

Moskowitz, Nelson

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

181115, G01V 114

Patent

active

042250099

ABSTRACT:
Disclosed is a seismic source device, known in the industry as an air gun, having shuttle control for allowing a predetermined discharge of compressed air into water for purposes of seismic exploration. The shuttle is controlled by valve means for closing the exhaust ports before all of the compressed air in the firing chamber of the air gun is exhausted. By preventing further discharge of air, with little or no loss in acoustic output, secondary pulses are greatly reduced, thereby enhancing the operation of the entire system. Further by preventing all the air in the firing chamber from being discharged, the system becomes more efficient and more cost effective.

REFERENCES:
patent: 3249177 (1966-05-01), Chelminski
patent: 3379273 (1968-04-01), Chelminski
patent: 3653460 (1972-04-01), Chelminski
patent: 3997021 (1976-12-01), Chelminski
patent: 4098369 (1978-07-01), Altschuler et al.

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