Patent ID: 11899147
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method of determining an image of a subterranean region of interest, comprising:
obtaining a seismic dataset for the subterranean region of interest;
obtaining a geological dip model for the subterranean region of interest;
determining, using a computer processor, a set of input seismic gathers from the seismic dataset;
selecting, using the computer processor, a central seismic gather and a set of neighboring seismic gathers in a vicinity of the central seismic gather from the set of seismic gathers;
determining, using the computer processor, a set of dip-corrected neighboring seismic gathers by:
dividing the set of neighboring seismic gathers into a plurality of seismic gather windows,
determining a local geological dip for each seismic gather window from the geological dip model,
determining an applicate shift for each of the plurality of seismic gather windows based, at least in part, on the local geological dip,
determining a plurality of shifted gather windows by shifting at least some of the plurality of seismic gather windows along an applicate axis based on the applicate shifts, and
forming the set of dip-corrected neighboring seismic gathers by combining the set of shifted gather windows;

determining, using the computer processor, a noise-attenuated central seismic gather by combining the dip-corrected neighboring seismic gathers and the central seismic gather; and
forming, using the computer processor, the image of the subterranean region of interest based, at least in part, on the noise-attenuated central seismic gather.