Patent ID: 11914090
Assignee: PGS GEOPHYSICAL AS
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A method for performing a marine survey with marine vibrators located in a body of water above a subterranean formation, the method comprising:
generating coded pseudo-random signals for driving the marine vibrators based on coded pseudo-random sequences;
using the coded pseudo-random signals to activate the marine vibrators to generate orthogonal coded pseudo-random sweeps that penetrate the subterranean formation;
recording wavefields reflected from the subterranean formation in seismic data generated by receivers located in the body of water; and
cross-correlating the seismic data with a signature of one of the coded pseudo-random sweeps to attenuate incoherent residual noise in the seismic data, wherein generating the coded pseudo-random signals for driving the marine vibrators comprises repeatedly using seed binary sequences to generate the coded pseudo-random sequences.