A skeg mounts from the stern of a towing vessel and extends below the waterline. A channel in the skeg protects cables for steamers and a source of a seismic system deployed from the vessel. Tow points on the skeg lie below the water's surface and connect to towlines to support the steamers and source. A floatation device supports the source and tows below the water's surface to avoid ice floes. The streamers can have vehicles deployed thereon for controlling a position on the streamer. To facilitate locating the streamers, these vehicles on the streamers can be brought to the surface when clear of ice floes so that GPS readings can be obtained and communicated to a control system. After obtaining readings, the vehicles can be floated back under the surface. Deploying, using, and retrieving the system accounts for ice at the surface in icy regions. In addition, handling the seismic record can account for noise generated by ice impact events.


    Access

    Download


    Export, share and cite



    Title :

    Marine seismic surveying in icy or obstructed waters


    Contributors:

    Publication date :

    2019-05-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01V Geophysik , GEOPHYSICS / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS



    MARINE SEISMIC SURVEYING IN ICY OR OBSTRUCTED WATERS

    CAGLIARDI JOSEPH R / RICE SHAWN / SCHNEIDER CURT et al. | European Patent Office | 2017

    Free access

    Marine seismic surveying in icy or obstructed waters

    GAGLIARDI JOSEPH R / RICE SHAWN / SCHNEIDER CURT et al. | European Patent Office | 2017

    Free access

    MARINE SEISMIC SURVEYING IN ICY OR OBSTRUCTED WATERS

    GAGLIARDI JOSEPH R / RICE SHAWN / SCHNEIDER CURT et al. | European Patent Office | 2017

    Free access

    MARINE SEISMIC SURVEYING IN ICY OR OBSTRUCTED WATERS

    GAGLIARDI JOSEPH R / RICE SHAWN / SCHNEIDER CURT et al. | European Patent Office | 2019

    Free access

    MARINE SEISMIC SURVEYING IN ICY OR OBSTRUCTED WATER

    GAL JARDI DZHOZEF R / RAJS SHON / SHNAJDER KURT et al. | European Patent Office | 2015

    Free access