Lead-in cable with a replaceable portion and method
AssigneeCgg Services SAS
InventorsFrank MCLEMORE, Pierre LE ROUX, Philippe DUMAZET
Life of this patent
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Abstract
A lead-in cable used to tow a streamer behind a vessel includes a replaceable portion removably connected between a portion of the lead-in cable attached to the vessel and the streamer. Alternatively a lead-in additional cable is inserted between a lead-in cable and a towed streamer. The replaceable portion or the lead-in additional cable covers a portion most likely to be damaged between the streamer and the towing vessel.
Claims20
A lead-in cable usable to tow a streamer during a marine survey, the lead-in cable comprising:
- a first portion configured to be attached to a towing device;
- a second replaceable portion configured to be removably connected between the first portion and the streamer, the second replaceable portion including:
- a body housing a functional cable;
- an upstream connector configured to attach the body to the first portion and to connect the functional cable to the first portion such that to ensure functional communication with the vessel;
- and
- a downstream connector configured to attach the body to the streamer and to connect the functional cable to the streamer.
A lead-in additional cable configured to be inserted between a lead-in cable and a streamer, the lead-in additional cable comprising:
- a body housing a functional cable;
- an upstream connector configured to attach the body to the lead-in cable and to connect the functional cable to the lead-in cable such that to ensure functional communication;
- and
- a downstream connector configured to attach the body to the streamer and to connect the functional cable to the streamer.
A method for lead-in cable related maintenance or repair, the method comprising:
- disconnecting a replaceable portion of a lead-in cable from a streamer and from an upstream portion of the lead-in cable attached to a towing device;
- connecting another portion of lead-in cable having a same structure as the replaceable portion, to the upstream portion of the lead-in cable;
- and
- connecting the lead-in cable to the streamer.
Dependencies are inferred from the claim text.