公开(公告)号：US20190154857A1

公开(公告)日：2019-05-23

申请号：US16191539

申请日：2018-11-15

Applicant: CGG SERVICES SAS

Inventor： Min WANG ,  Yi XIE ,  Xiaodong WU ,  Dechun LIN

IPC: G01V1/38 ,  G01V1/30 ,  G01V1/28

Abstract: A seismic exploration method includes performing a true amplitude PSDM based on an initial velocity model of a subsurface formation to obtain a reflectivity model, and then a Born modeling using the reflectivity model to generate synthetic data. An image-based reflection full waveform inversion is applied to a cost function of differences between seismic data acquired over the subsurface formation and the synthetic data to update the initial velocity model. The updated velocity model enables exploring the presence of and/or assisting in the extraction of natural resources from the subsurface formation.

公开(公告)号：US20210003728A1

公开(公告)日：2021-01-07

申请号：US16870274

申请日：2020-05-08

Applicant: CGG SERVICES SAS

Inventor： Min WANG ,  Yi XIE ,  Tengfei WANG ,  Adriano GOMES

IPC: G01V1/28 ,  G01V1/30 ,  G01V1/00 ,  G01V1/36

Abstract: Methods and apparatuses for processing seismic data acquired with multicomponent sensors build an accurate S-wave velocity model of a surveyed underground formation using a full waveform inversion (FWI) approach. PS synthetic data is generated using approximative acoustic equations in anisotropic media with a P-wave model, a current S-wave velocity model and a reflectivity model as inputs. The current S-wave velocity model is updated using FWI to minimize an amplitude-discrepancy-mitigating cost function that alleviates the amplitude mismatch between the PS observed data and the PS synthetic data due to the use of the approximative acoustic equations.

公开(公告)号：US20190302292A1

公开(公告)日：2019-10-03

申请号：US16032429

申请日：2018-07-11

Applicant: CGG SERVICES SAS

Inventor： Yi XIE ,  Min WANG

IPC: G01V1/30 ,  G01V1/28

Abstract: A method for seismic exploration uses visco-acoustic FWI to model velocity and quality factor Q for an explored subsurface formation. The method employs frequency-dependent velocity to reduce cross-talk between Q and velocity and may be used for both isotropic and anisotropic media.

公开(公告)号：US20240210582A1

公开(公告)日：2024-06-27

申请号：US18302119

申请日：2023-04-18

Applicant: CGG SERVICES SAS

Inventor： Min WANG ,  Yi XIE

IPC: G01V1/28 ,  G01V1/30

CPC classification number: G01V1/282 ,  G01V1/303 ,  G01V2210/512 ,  G01V2210/6222 ,  G01V2210/675

Abstract: A method for raw seismic data inversion includes receiving raw seismic data acquired over an underground formation, receiving an initial velocity model of the underground formation, performing a dynamic resolution full waveform inversion, DR-FWI, on the raw seismic data so that a tomography component of a velocity gradient G is compensated to generate a compensated tomographic component while a diving wave component and a migration component are preserved, outputting an updated velocity model based on an illumination compensated velocity gradient G′, which is calculated based on the compensated tomographic component), and locating natural resources in the underground formation using the updated velocity model updated by the DR-FWI.