公开(公告)号：US20250004155A1

公开(公告)日：2025-01-02

申请号：US18343180

申请日：2023-06-28

Applicant: ARAMCO SERVICES COMPANY

Inventor： Hong Liang ,  Houzhu Zhang

IPC: G01V1/32 ,  E21B44/00 ,  E21B49/00 ,  G01V1/30 ,  G01V1/36

Abstract: Examples of methods and systems are disclosed. The methods may include obtaining a seismic data regarding a subsurface region of interest, wherein the seismic data comprises a plurality of time-space waveforms. The methods may also include obtaining a seismic velocity model. The methods may further include determining a migrated seismic image based on the plurality of time-space waveforms and the seismic velocity model. The method may still further include generating a filtered seismic image by applying a depth-dependent attenuation operator to the migrated seismic image and determining a drilling target in the subsurface region based on the filtered seismic image.

公开(公告)号：US20250003327A1

公开(公告)日：2025-01-02

申请号：US18345983

申请日：2023-06-30

Applicant: ARAMCO SERVICES COMPANY

Inventor： Houzhu Zhang ,  Hong Liang

IPC: E21B47/022 ,  E21B47/002 ,  G01V1/50

Abstract: Examples of methods and systems are disclosed. The methods may include obtaining seismic data associated with a subsurface region of interest, wherein the seismic data comprises a plurality of time-space waveforms. The methods may also include determining a plurality of mechanical parameters corresponding to a formation of the subsurface region based, at least in part, on the plurality of time-space waveforms. The methods may further include generating a filtering region based on an artifact identified in the plurality of time-space waveforms. The methods may still further include determining a plurality of attenuation parameters based, at least in part, on the filtering region, the attenuation parameters being configured to attenuate the artifact. The methods may further include filtering the time-space waveforms to generate a plurality of filtered time-space waveforms. The method may still further include generating a seismic image of the subsurface region using the plurality of filtered time-space waveforms.

公开(公告)号：US20250067891A1

公开(公告)日：2025-02-27

申请号：US18454614

申请日：2023-08-23

Applicant: ARAMCO SERVICES COMPANY

Inventor： Hong Liang ,  Houzhu Zhang ,  Dongliang Zhang

IPC: G01V1/50

Abstract: Methods and systems are disclosed. The methods may include obtaining vertical seismic profile (VSP) data and a seismic velocity model for a subterranean region of interest and determining, using the seismic velocity model and reverse time migration, a pre-stacked migrated seismic image based on the VSP data. The pre-stacked migrated seismic image includes seismic slices. The methods may further include, for each of the seismic slices in turn, determining a coherency map, determining a weighting map based on the coherency map, and determining a corrected seismic slice by applying the weighting map to each of the seismic slices. The methods may still further include determining a post-stacked corrected migrated seismic image based on the corrected seismic slices and determining a location of a geological feature within the subterranean region of interest based, at least in part, on the post-stacked corrected migrated seismic image.