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US 9,457,331 B2Granted
Marine acquisition using subaquatic floating seismic nodes
AssigneeCgg Services SAS
InventorRisto Siliqi
Life of this patent
Estimating the term…
Abstract
Methods and systems are presented for generating and performing a seismic data acquisition mission based on an a priori sea current model and a seismic data acquisition operation model and a shooting solution model based on the a priori sea current model. The individual models can be updated based on releasing sample buoys through the survey area both before and during mission execution.
Claims18
A method of generating and performing a seismic data acquisition mission using a plurality of nodes, said method comprising:
- generating an a priori model of sea currents, in a survey area, from available atmospheric and oceanographic data;
- generating a seismic data acquisition operation model, based on said a priori model of sea currents, for the plurality of nodes;
- generating a seismic shooting solution for seismic sources to provide illumination and fold of subsurface targets associated with said survey area;
- launching, from a vessel, a sample portion of said plurality of nodes for collecting preliminary position data associated with said sample portion of said plurality of nodes as they traverse said survey area to confirm sea current drift predicted by said a priori model and refining said seismic data acquisition operation model for the plurality of nodes based on said preliminary position data;
- launching the remainder of said plurality of nodes based on said a priori model and said refined seismic data acquisition operation model;
- firing said seismic shooting solution based on said refined seismic data acquisition operation model;
- recording seismic data with seismic sensors located on the plurality of nodes;
- and
- recovering said plurality of nodes.
6 more elements
A system for performing a marine-based seismic data acquisition, said system comprising:
- a plurality of nodes;
- one or more vessels for deploying and retrieving said plurality of nodes;
- a sea current model component for generating an a priori model, based on atmospheric and oceanographic data, of sea currents associated with a survey area;
- an operation model component for generating a seismic data acquisition operation model, based on said a priori model, for the plurality of nodes;
- a shooting model component for generating a shooting solution model for seismic sources, based on said seismic data acquisition operation model;
- and
- an update component for analyzing position data collected from said plurality of nodes and updating said seismic data acquisition operation model for the plurality of nodes and said shooting solution model,
- wherein seismic sensors located on the plurality of nodes record seismic data generated as a consequence of applying the shooting solution model to the seismic sources.
5 more elements
Dependencies are inferred from the claim text.