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US 8,947,976 B2Granted
Harmonic attenuation using multiple sweep rates
AssigneeWesternGeco L.L.C.
InventorKambiz Iranpour
Life of this patent
Estimating the term…
Abstract
A technique includes generating seismic sweep sequences. Each of the seismic sweep sequences has an associated sweep rate. The technique includes varying the sweep rates to reduce harmonic distortion present in a composite seismic measurement produced in response to the sweep sequences.
Claims19
A method comprising:
- operating vibrators to generate seismic sweep sequences, each of the seismic sweep sequences having an associated sweep rate;
- and
- varying the sweep rates to reduce harmonic distortion present in a composite seismic measurement produced in response to the sweep sequences.
A method comprising:
- receiving seismic data indicative of seismic measurements acquired in response to a plurality of seismic sweep sequences, each of the seismic sweep sequences having an associated sweep rate and the sweep rates being varied;
- and
- processing the seismic measurements in a machine to produce a composite seismic measurement and using the varied sweep rates to suppress harmonic distortion otherwise present in the composite seismic measurement.
Dependencies are inferred from the claim text.