Ocean bottom seismic station
AssigneeOptoplan AS
InventorsArne Berg, Torbjørn Heglum, Roar Furuhaug, Tormod Bliksås
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Abstract
Methods and apparatus for cable termination and sensor integration at a sensor station within an ocean bottom seismic (OBS) cable array are disclosed. The sensor stations include a housing for various sensor components. Additionally, the sensor stations can accommodate an excess length of any data transmission members which may not be cut at the sensor station while enabling connection of one or more cut data transmission members with the sensor components. The sensor stations further manage any strength elements of the cable array.
Claims14
A seismic sensor station for disposal on a seismic cable, comprising:
- an internal housing supporting sensor components of the sensor station, wherein an outside wall of the housing defines a rounded perimeter of the internal housing;
- a first optical cable of the seismic cable that is uncut at the sensor station and radially coiled around an outer surface of a cylindrically-shaped internal housing, said first optical cable including one or more fibers within a metal tube that bypasses the sensor station without being terminated;
- a second optical cable routed into the housing for connection to the sensor components;
- and
- an external shroud disposed over the internal housing and first optical cable, said shroud defining a space between an outside surface of the internal sensor housing and an inside surface of the external shroud for allowing a length of the first optical cable to be arranged at least partly within the space.
Dependencies are inferred from the claim text.