Knuckle deflector for marine seismic survey system
AssigneeCgg Services SAS
InventorHervé RICHER DE FORGES
Life of this patent
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Abstract
Deflectors configured to be attached to cables towed behind a vessel for performing a marine survey and associated methods are provided. A deflector has a body including a wing portion and a knuckle portion. The wing portion has substantially flat wings extending away from a position where the body is attached to the cable. The knuckle portion is configured to attach the wing portion to the cable so that the wing portion remains able to rotate about three rectangular axes while being towed underwater.
Claims20
A deflector configured to be attached to a cable towed by a vessel, the deflector comprising:
- a body configured to provide a lift force to the cable and including
- a wing portion that has substantially flat wings extending away from a position where the body is attached to the cable, and
- a knuckle portion configured to attach the wing portion to the cable so that the wing portion remains able to rotate about three rectangular axes while being towed underwater.
A marine seismic survey system, comprising:
- a cable towed by a vessel;
- and
- a deflector attached to the cable and including a body configured to provide a lift force to the cable, the body including (A) a wing portion having substantially flat wings extending away from a position where the body is attached to the cable, and (B) a knuckle portion configured to attach the wing portion to the cable so that the wing portion remains able to rotate about three rectangular axes while being towed underwater.
A method of placing a deflector on a cable towed by a vessel of a marine survey system, the method comprising:
- mounting a supporting element configured to surround the cable at a predetermined position on the cable;
- and
- attaching covers fixedly engaged with one another to substantially surround the supporting element, the covers being connected to a wing portion extending away from the predetermined position, wherein the supporting element and the covers are configured so that the wing portion remains able to rotate about three rectangular axes while being towed underwater.
Dependencies are inferred from the claim text.