Patent ID: 8867307

Claim:
A method for seismic surveying, comprising: disposing a plurality of seismic sensors in a selected pattern above an area of the Earth's subsurface to be evaluated; repeatedly actuating a seismic energy source proximate the seismic sensors, the source remaining at a fixed position during the plurality of actuations; recording signals generated by the seismic sensors indexed in time with respect to each actuation of the seismic energy source, the seismic sensors remaining at a fixed position during the recording; and processing the recorded signals to generate an image corresponding to at least one point in the subsurface, the processing including stacking recordings from each individual sensor with other recordings from the same individual sensors, and beam steering a response of the seismic sensors to a selected focal point of a response of the plurality of sensors, wherein the at least one image point corresponds to the selected focal point, the image having a higher frequency content than detectable using only a single actuation of the source.