Tuned bubble attenuator for towed seismic source

Details Tuned bubble attenuator for towed seismic source Tuned bubble attenuator for towed seismic source

1997-08-22

1999-09-28

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Offshore prospecting

367 24, 181120, G01V 138

Patent

active

059599383

ABSTRACT:
An apparatus and method for modifying the seismic source signal from air guns towed behind a marine seismic vessel. At least one conduit is towed behind the vessel to release bubbles into the water. The bubbles are formed with compressed air released from apertures in the conduit. The size and distribution of the bubbles is controlled by varying the aperture size, the compressed air pressure, the aperture position and orientation on the conduit, and the vessel speed. The bubbles attenuate side directional frequencies to reduce the outwardly directed seismic source signal and to improve the signal to noise ratio at the receivers. By controlling the bubble size and distribution, attenuation of selected frequencies can be controlled.

REFERENCES:
patent: 2954090 (1960-09-01), Burg et al.
patent: 4618024 (1986-10-01), Domenico
patent: 4625302 (1986-11-01), Clark
patent: 4632213 (1986-12-01), Domenico

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