Seismic airgun arrangement

Details Seismic airgun arrangement Seismic airgun arrangement

G - Physics

01

V

G01V 1/387 (2006.01) G01V 1/133 (2006.01)

Patent

CA 2143196

Seismic airgun arrangement for attenuating unwanted oscillations in the emitted signal, whereby the airgun has one or more outlet ports for exhausting air in a generally radial direction from a central axis of the airgun, and whereby a perforated screen of plate material is provided around the airgun for the attenuation mentioned. The volume which is generally delimited within the screen is significantly smaller than the maximum bubble size which is normally generated by the airgun. The screen has an open side or end at a part of the screen being adapted to face at least partially downwards in the normal operative position of the airgun. At least edge portions of the screen along the open side or end are located substantially directly opposite the outlet port or ports.

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