公开(公告)号：US11353613B2

公开(公告)日：2022-06-07

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 ,  G01V1/28 ,  G01V1/30

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：US10935681B2

公开(公告)日：2021-03-02

申请号：US15994273

申请日：2018-05-31

Applicant: CGG SERVICES SAS

Inventor： Benjamin Roure

IPC: G01V1/30 ,  G01V1/36

Abstract: Methods for seismic exploration of an underground formation including at least one anisotropic layer perform a joint velocity-variation-with-azimuth, VVAz, and amplitude-variation-with-azimuth, AVAz, inversion using the azimuthal angle stacks to obtain a structural representation of the underground formation. The structural representation is used to generate scenarios for exploiting resources in at least one layer of the underground formation.

公开(公告)号：US20210026029A1

公开(公告)日：2021-01-28

申请号：US17070005

申请日：2020-10-14

Applicant: CGG SERVICES SAS

Inventor： Gordon POOLE

IPC: G01V1/36 ,  G01V1/28 ,  G01V1/30 ,  G01V1/38

Abstract: Computing device, computer instructions and method process input seismic data d recorded in a first domain by seismic receivers that travel in water, the input seismic data d including pressure and particle motion measurements, including up-going and down-going wave-fields. A model p is generated in a second domain by solving an inverse problem for the input seismic data d, wherein applying an L transform to the model p describes the input data d. An L′ transform, which is different from the L transform, is then applied to the model p to obtain an output seismic data in the first domain, the output seismic data having a characteristic imparted by the transform L′. The characteristic is related to pressure wave-fields and/or particle motion wave-fields interpolated at positions in-between the input seismic receivers. An image of the surveyed subsurface is generated based on the output seismic dataset.

公开(公告)号：US20200379135A1

公开(公告)日：2020-12-03

申请号：US16738025

申请日：2020-01-09

Applicant: CGG SERVICES SAS

Inventor： Song HOU ,  Stefano ANGIO ,  Henning HOEBER

IPC: G01V1/28 ,  G06N3/04 ,  G06N3/08 ,  G01V1/30

Abstract: Property values inside an explored underground subsurface are determined using hybrid analytic and machine learning. A training dataset representing survey data acquired over the explored underground structure is used to obtain labels via an analytic inversion. A deep neural network model generated using the training dataset and the labels is used to predict property values corresponding to the survey data using the DNN model.

公开(公告)号：US10802168B2

公开(公告)日：2020-10-13

申请号：US15520118

申请日：2015-10-26

Applicant: CGG SERVICES SAS

Inventor： Ted Holden

IPC: G06F30/3308 ,  G01V1/28 ,  E21B43/26 ,  E21B49/00 ,  G01V1/30 ,  G01V11/00 ,  G01V1/50 ,  E21B43/00 ,  E21B41/00 ,  E21B49/02 ,  E21B49/08

Abstract: Predicting hydraulic fracture treatment uses well log data and core data from one well in a given subsurface region to create a petrophysical properties model for the subsurface region. The petrophysical properties model yields fluid volumes and mineral volumes in any given well passing through the subsurface region using only well log data as inputs. The fluid and mineral volumes are used with dipole sonic data from a second well to create an elastic rock properties model for the given subsurface that yields elastic properties in any well passing through the subsurface region using only well log data and mineral and fluid volumes. For wells in the subsurface having only well log data, the petrophysical properties model and the elastic rock properties model are used with the well log data to predict an amount of recoverable hydrocarbons within wells that will respond to hydraulic fracture treatments.

公开(公告)号：US20200309980A1

公开(公告)日：2020-10-01

申请号：US16662644

申请日：2019-10-24

Applicant: CGG SERVICES SAS

Inventor： Diancheng WANG ,  Ping WANG

IPC: G01V1/32 ,  G01V1/30 ,  G01V99/00 ,  G06F17/50

Abstract: Methods and devices for seismic exploration of an underground structure apply W2-based full-wave inversion to transformed synthetic and seismic data. Data transformation ensures that the synthetic and seismic data are positive definite and have the same mass using an adaptive normalization. This approach yields superior results particularly when the underground structure includes salt bodies.

公开(公告)号：US10670758B2

公开(公告)日：2020-06-02

申请号：US15311654

申请日：2015-06-01

Applicant: CGG SERVICES SAS

Inventor： Adel Khalil ,  Henning Hoeber ,  Bernard Deschizeaux

IPC: G01V1/36 ,  G01V1/28

Abstract: A method for spectral analysis of seismic data obtains imaged seismic data and generates orthogonally shifted imaged seismic data gathers. The orthogonally shifted imaged seismic data gathers are processed to generate a spectrally processed imaged seismic data. Alternatively, the imaged seismic data are obtained using a spectral processing filter that is a function of a magnitude of a total wavenumber of the imaged seismic data in three dimensions and a spatially variable velocity function.

公开(公告)号：US10605937B2

公开(公告)日：2020-03-31

申请号：US15581202

申请日：2017-04-28

Applicant: CGG SERVICES SAS

Inventor： Florian Duret

IPC: G01V1/30 ,  G06N20/00 ,  G01V1/28 ,  G01V1/36 ,  G06N5/04

Abstract: Device and method for calculating a set of surface wave dispersion curves. The method includes receiving seismic data recorded with seismic sensors over an area to be surveyed; selecting region units that cover the area to be surveyed; gathering traces for the region units; processing in a computing device the traces to obtain a set of candidate measurements for each region unit; teaching a decision algorithm based on a first subset of the set of candidate measurements; and calculating the set of surface wave dispersion curves by running the decision algorithm on a second subset of the set of candidate measurements.

公开(公告)号：US10551525B2

公开(公告)日：2020-02-04

申请号：US15458587

申请日：2017-03-14

Applicant: CGG SERVICES SAS

Inventor： James Harris ,  Alexandra Ashley ,  Simon Otto ,  Robert Crossley

IPC: G01V99/00

Abstract: System and method for estimating a spatial distribution of a characteristic associated with Earth resources. The method includes receiving at an interface palaeogeography data including (1) palaeotopography data, (2) palaeobathymetry data, (3) and a palaeo-earth systems model; calculating with a processor, a retrodictive model of the characteristic based on the (1) palaeotopography data, (2) the palaeobathymetry data, and (3) the palaeo-earth systems model; and imaging the spatial distribution of the characteristic over a part of the Earth.

公开(公告)号：US20200025667A1

公开(公告)日：2020-01-23

申请号：US16037254

申请日：2018-07-17

Applicant: CGG SERVICES SAS

Inventor： Fabien ALLO ,  Chi Vinh LY

IPC: G01N15/08 ,  G01N33/24

Abstract: A method for estimating breakdown pressure values along a wellbore starts from analyzing cuttings from locations along the wellbore to determine rock properties, including rock texture information associated with the locations. The anisotropic elastic and mechanical properties at the locations are calculated based on the rock properties and using at least one rock physics model. Rock weakness index values corresponding to the locations are then calculated based on the anisotropic elastic and mechanical properties and the rock texture information. The breakdown pressure values at the locations are estimated from the rock weakness index values.