Patent ID: 6631095
Filing Date: 2003-10-07
Classification: G01V,H01B

Abstract:
A lead-in cable for connecting a seismic streamer to a towing vessel, comprising:a first electrical conductor for carrying a first polarity of power to the streamer and for providing tensile strength to the lead-in cable, the first electrical conductor being at the center core of the lead-in cable; a first layer of insulation surrounding the first electrical conductor; a second electrical conductor for carrying a second polarity of power to the streamer and for providing tensile strength to the lead-in cable, the second electrical conductor surrounding the first layer of insulation; a second layer insulation surrounding the second electrical conductor; and a layer of seismic data conductors for carrying seismic data signals from the streamer, the layer of seismic data conductors surrounding the second layer of insulation; whereby the second electrical conductor, the first and second layers of insulation, the layer of seismic data conductors are all concentrically disposed about the longitudinal axis of the first electrical conductor at the center core of the lead-in cable.