Patent ID: 9304215
Filing Date: 2016-04-05
CPC Classification: G01V

Claim Text:
1. A system for receiving seismic signals, comprising: a first plurality of seismic signal sources installed at a terranean surface grouped to define respective perimeters of a first plurality of geographic zones on the terranean surface; a second plurality of seismic signal sources installed at the terranean surface grouped to define respective perimeters of a second plurality of geographic zones on the terranean surface, the second plurality of zones interspersed between the first plurality of zones to form a pattern of first and second zones, each geographic zone of the second plurality of geographic zones adjacent a geographic zone of the first plurality of geographic zones along all sides of the perimeter; and a plurality of seismic signal receivers installed at the terranean surface, with at least one seismic signal receiver installed within each of the first and second plurality of geographic zones, the installed seismic signal receivers within the first plurality of geographic zones are less than the installed seismic signal receivers within the second plurality of geographic zones, wherein installed seismic signal receivers within the first plurality of geographic zones comprise less than two seismic signal receivers per wavelength of seismic energy generated by at least one of the seismic signal sources, and installed seismic signal receivers within the second plurality of geographic zones comprise two or more seismic signal receivers per wavelength of seismic energy generated by at least one of the seismic signal sources, the seismic signal receivers within each of the second plurality of geographic zones arranged in a two-dimensional array dispersed substantially evenly throughout areas bounded by the perimeters defined by the second plurality of seismic signal sources.