Acoustic positioning of seismic ocean bottom cable

Details Acoustic positioning of seismic ocean bottom cable Acoustic positioning of seismic ocean bottom cable

G - Physics

01

V

G01V 1/38 (2006.01) G01V 1/18 (2006.01) G01V 1/20 (2006.01) G01V 1/28 (2006.01)

Patent

CA 2276361

A seismic ocean bottom posi-tioning device includes a series of seismic stations (14) spaced apart at a predetermined interval along a ca-ble. Each station (14) includes a hydrophone, a motion sensing device such as a geophone (22) and an acous-tic positioning circuit (24). A pream-plifier is coupled to a seismic channel. The hydrophone (20) is also coupled to the seismic channel. An acoustic chan-nel is also coupled to the preamplifier and coupled to the hydrophone.

La présente invention concerne une flûte sismique pour fond océanique comprenant une suite de capsules sismiques (14) situées à intervalles réguliers le long d'un câble. Chaque capsule (14) comporte un hydrophone, un détecteur de mouvement tel qu'un géophone (22), et un circuit de positionnement acoustique (24). Un préamplificateur est couplé à un canal sismique. L'hydrophone (20) est également couplé au canal sismique. De plus, un canal acoustique est également couplé au préamplificateur et à l'hydrophone.

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