Hybrid seabed seismic acquisition geometry using a combination of nodes and autonomous underwater vehicles

A system comprising:

• a seismic acquisition system comprising a first plurality of seismic receivers and a second plurality of seismic receivers,
• wherein a first receiver grid, for a wide-azimuth seismic survey over a subterranean region of interest, comprises a first plurality of receiver locations on a seafloor above the subterranean region of interest,
• wherein a second receiver grid, for an ocean bottom node (OBN) seismic survey over the subterranean region of interest, comprises a second plurality of receiver locations on the seafloor,
• wherein the second plurality of receiver locations is spatially dense relative to the first plurality of receiver locations,
• wherein one seismic receiver among the first plurality of seismic receivers is deployed at each of the first plurality of receiver locations,
• wherein the first plurality of seismic receivers is configured to record a first seismic dataset that corresponds to the wide-azimuth seismic survey,
• wherein one seismic receiver among the second plurality of seismic receivers is deployed at each of the second plurality of receiver locations,
• wherein the second plurality of seismic receivers is configured to record a second seismic dataset that corresponds to the OBN seismic survey,
• and
• a seismic source configured to activate at a source location;
• a seismic processing system configured to:
• receive, from the first plurality of seismic receivers, the first seismic dataset,
• receive, from the second plurality of seismic receivers, the second seismic dataset,
• generate, using a velocity analysis method, a velocity model using the first seismic dataset, and
• form a seismic image using the velocity model and the second seismic dataset;
• and
• a seismic interpretation workstation configured to:
• determine a location of a hydrocarbon reservoir within the subterranean region based on the seismic image.