Internal sleeve air release control apparatus in seismic air gun
Disclosed is a seismic source device, known in the industry as an air gun, having internal sleeve and shuttle control for allowing a predetermined discharge of compressed air into water for purposes of seismic exploration. The shuttle engages an internal sleeve having ports that momentarily align with exhaust ports and then moves past, sealing off 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, 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.
- Assignee:
- Texas Instruments Inc
- Patent Number(s):
- US 4246979
- OSTI ID:
- 6458535
- Resource Relation:
- Patent File Date: Filed date 5 Apr 1979
- Country of Publication:
- United States
- Language:
- English
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