Apparatus and method for vibration mitigation through sequential impedance optimization
AssigneeSercel
InventorsMatthew CERNIWAY, Michael MAPLES, Gaetan MELLIER
Life of this patent
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Abstract
Method and apparatus for mitigating vibrations in a device towed in water. The apparatus includes one or more tuned elastic sections having a complex spring rate and adapted to attenuate vibrations in a specified frequency range; and a head end coupler adapted to couple the apparatus for vibration mitigation to a component of an electro-mechanical cable or a tow assembly. One of the one or more tuned elastic sections is coupled to the head end coupler with a high impedance material interface.
Claims20
An apparatus for vibration mitigation comprising:
- one or more tuned elastic sections having a complex spring rate and adapted to attenuate vibrations in a specified frequency range;
- and
- a head end coupler adapted to couple the apparatus for vibration mitigation to a component of an electro-mechanical cable or a tow assembly, wherein one of the one or more tuned elastic sections is coupled to the head end coupler with a high impedance material interface.
A streamer spread for conducting a seismic survey comprising:
- a section comprising at least one sensor component for collecting seismic data;
- and
- a vibration mitigation assembly adapted to attenuate vibrations experienced by the section, wherein the vibration mitigation assembly is coupled to the section,
- wherein the vibration mitigation assembly is positioned next to section based on calculations performed prior to collecting the seismic data.
A method for preparing a vibration mitigation assembly comprising:
- determining forces experienced at a selected location of an electro-mechanical cable;
- determining frequencies for vibrations caused by the forces at the selected location of the electro-mechanical cable;
- selecting one or more tuned elastic sections based on the determined frequencies;
- joining the one or more selected tuned elastic sections using at least one high impedance material interface to form a vibration mitigation assembly;
- and
- placing the vibration mitigation assembly at the selected location along the electro-mechanical cable.
Dependencies are inferred from the claim text.