公开(公告)号：US20240302555A1

公开(公告)日：2024-09-12

申请号：US18028149

申请日：2022-09-23

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Yujin Liu ,  Hongwei Liu ,  Fuhao Qin ,  Yi He

IPC: G01V1/34 ,  E21B44/00 ,  E21B49/00 ,  G01V1/28 ,  G01V1/30

CPC classification number: G01V1/345 ,  E21B49/00 ,  G01V1/282 ,  G01V1/301 ,  E21B44/00 ,  E21B2200/20 ,  G01V2210/512

Abstract: A method (600) and a system (1000) for generating an adaptive migration taper for a pre-stack seismic dataset are disclosed. The method (600) includes obtaining the pre-stack seismic dataset (602) and a seismic velocity model of a subterranean region (604). The method (600) also includes generating the adaptive migration taper based, at least in part, on the pre-stack seismic dataset (606), and forming a migrated seismic image using a migration function, the seismic velocity model, the pre-stack seismic dataset, and the adaptive migration taper (608). The method (600) further includes determining a location of a hydrocarbon reservoir based, at least in part, on the migrated seismic image (610).

公开(公告)号：US12061305B2

公开(公告)日：2024-08-13

申请号：US18347597

申请日：2023-07-06

Applicant: Schlumberger Technology Corporation

Inventor： Maria Fox ,  Derek Long ,  Fangkai Yang

IPC: G06F16/00 ,  G01V1/28 ,  G01V3/38 ,  G01V11/00 ,  G01V20/00 ,  G06F18/214 ,  G06N3/045 ,  G06N3/08 ,  G06F30/20

CPC classification number: G01V11/002 ,  G01V1/282 ,  G01V3/38 ,  G01V20/00 ,  G06F18/214 ,  G06N3/045 ,  G06N3/08 ,  G06F30/20

Abstract: A system and method that include receiving an oilfield operational plan and converting the oilfield operational plan into pixel-grids that are interpreted as images. The system and method also include inputting the pixel-grids to an image analysis convolution neural network to execute an image interpretation process. The system and method additionally include determining a current state of the oilfield operational plan based on the image interpretation process. The system and method further include determining a next state of the oilfield operational plan.

公开(公告)号：US12050294B1

公开(公告)日：2024-07-30

申请号：US18166338

申请日：2023-02-08

Applicant: CHINA PETROLEUM & CHEMICAL CORPORATION

Inventor： Yequan Chen ,  Fan Xia

IPC: G01V1/28 ,  G01V1/104 ,  G01V1/50

CPC classification number: G01V1/282 ,  G01V1/104 ,  G01V1/50 ,  G01V2210/1212 ,  G01V2210/6242

Abstract: A method and system for generating and displaying a low frequency model for a seismic survey region are provided. The method and system may include defining a seismic survey geometry of the seismic survey region; processing seismic data to generate a stacked seismic data and well log data to obtain elastic attributes; importing stacked seismic data and processed well log data into the defined seismic survey geometry; generating envelope data using the stacked seismic data; generating a low frequency trace for each well; calculating a least-squares optimized coefficient model at each well location based upon the generated envelope data and the low frequency trace for each well; interpolating the coefficient model to the seismic survey geometry using a covariance technique and the imported stacked seismic data; and generating a three-dimensional low frequency model by inversion using the envelope data and the interpolated coefficient model for display.

公开(公告)号：US20240241278A1

公开(公告)日：2024-07-18

申请号：US18156229

申请日：2023-01-18

Applicant: Chevron U.S.A. Inc.

Inventor： Yijie Zhou

IPC: G01V1/34 ,  G01V1/28

CPC classification number: G01V1/34 ,  G01V1/282

Abstract: A method is described for reservoir structure characterization including obtaining well logs and seismic data; performing facies classification and stratigraphic sequencing on the well logs to identify a plurality of layers; estimating wavelets from the seismic data and using the wavelets to tie synthetic seismograms from well logs to the seismic data; determining a mean value for each elastic property in each layer of the well logs and assigning the mean value to each layer to generate blocky well logs; using the wavelets to attempt to tie synthetic seismograms from the blocky well logs to the seismic data; defining facies-dependent properties based on the blocky well logs; performing global optimization using the facies-dependent properties and the seismic data to find thicknesses of the layers across the volume of interest; and mapping the reservoir structure based on the global optimization to generate a graphical representation of the reservoir structure.

公开(公告)号：US20240201405A1

公开(公告)日：2024-06-20

申请号：US18084148

申请日：2022-12-19

Applicant: Saudi Arabian Oil Company

Inventor： Sherif Khattab ,  Muhammad Ashraf

IPC: G01V1/28 ,  E21B44/00 ,  E21B49/00 ,  G01V1/30 ,  G01V1/34 ,  G06T17/05

CPC classification number: G01V1/282 ,  E21B44/00 ,  E21B49/00 ,  G01V1/306 ,  G01V1/345 ,  G06T17/05 ,  G06T2200/24

Abstract: Methods for seismic imaging of a subterranean geological formation include receiving first acoustic impedance data, having a first resolution, associated with wells in a subsurface region. A system receives seismic data including second acoustic impedance data having a second resolution. The system performs a quality control process configured to identify a mismatch between the first acoustic impedance data and the second acoustic impedance data. The system resamples the second acoustic impedance data into a three-dimensional (3D) grid model. The system scales up the first acoustic impedance data into the 3D grid model. The system downscales the second acoustic impedance data controlled by the first acoustic impedance data in the 3D grid model. The system generates third acoustic impedance data representing fine-scale impedance data. The system extrapolates the fine-scale impedance into areas or regions having no seismic data coverage or poor seismic data coverage.

公开(公告)号：US12000971B2

公开(公告)日：2024-06-04

申请号：US17647799

申请日：2022-01-12

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Daniele Colombo ,  Ernesto Sandoval-Curiel ,  Diego Rovetta ,  Apostolos Kontakis

IPC: G01V1/28 ,  G01V1/00 ,  G01V1/30

CPC classification number: G01V1/282 ,  G01V1/003 ,  G01V1/306

Abstract: A method may include obtaining various seismic traces for a geological region of interest. The method may further include determining an offset attribute and an azimuthal attribute. The method may further include determining, using the offset attribute and the azimuthal attribute, a virtual trace bin for the geological region of interest. The method may further include generating a virtual trace using a subset of the seismic traces and corresponding to the virtual trace bin. The method may further include generating a velocity model for the geological region of interest using a virtual shot gather including the virtual trace and various virtual traces. A respective virtual trace among the virtual traces may correspond to a respective virtual trace bin among various virtual trace bins. The method may further include generating a seismic image of the geological region of interest using the velocity model.

公开(公告)号：US20240176037A1

公开(公告)日：2024-05-30

申请号：US18059915

申请日：2022-11-29

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Ilya Silvestrov ,  Andrey Bakulin

IPC: G01V1/30 ,  G01V1/28 ,  G01V1/34

CPC classification number: G01V1/308 ,  G01V1/282 ,  G01V1/345

Abstract: Systems and methods are disclosed. The method includes drilling, using a drill bit, a wellbore to a sequence of drilling depths within a subterranean region of interest. The method further includes, for each drilling depth, obtaining a seismic dataset generated by the drill bit, determining a coherency map using the seismic dataset, a range of seismic velocities, a range of vertical traveltimes, and a geological model, determining a locus from the coherency map, defining an objective function based on the locus, and determining a unique seismic velocity and a unique vertical traveltime based on an extremum of the objective function. The method further still includes generating a vertical traveltime, depth model using the unique seismic velocity and the unique vertical traveltime for each drilling depth, obtaining a time-domain surface seismic dataset, and determining a depth-domain surface seismic dataset using the time-domain surface seismic dataset and the vertical traveltime, depth model.

公开(公告)号：US11965996B2

公开(公告)日：2024-04-23

申请号：US17682284

申请日：2022-02-28

Applicant: Saudi Arabian Oil Company

Inventor： Ahmed W. Daghistani

IPC: G01V1/28 ,  G01V1/30

CPC classification number: G01V1/282 ,  G01V1/306 ,  G01V2210/6169

Abstract: The systems and methods described in this specification relate to generating a low frequency model of a subterranean formation for performing a seismic inversion. The systems and methods receive seismic data for a first region of the subterranean formation and well log data of one or more wells located at the first region. The systems and methods determine one or more relative layer attributes of the first region, one or more first input values for a machine learning model, and one or more second input values for the machine learning model. The systems and methods generate, a first relative low frequency model for the first region, and extrapolate, by executing the machine learning model by the processor, the first relative low frequency model to a second region of the subterranean formation.

公开(公告)号：US20240125956A1

公开(公告)日：2024-04-18

申请号：US18046236

申请日：2022-10-13

Applicant: Chevron U.S.A. Inc.

Inventor： Yonghe J. Sun

IPC: G01V1/28 ,  G01V1/30

CPC classification number: G01V1/282 ,  G01V1/307

Abstract: A method is described for seismic amplitude analysis that uses a set of artificial and individually separable reflectors consistent with dip fields in the subsurface volume of interest to define an AVA basis functions; the AVA basis functions are used in true-3D AVA modeling and true-3D AVA inversion. The inversion result and well logs representative of the subsurface volume of interest are used to train a model to create a rock property prediction model. The method may apply the rock property prediction model to a second seismic image to generate a rock property volume. The method is executed by a computer system.

公开(公告)号：US11940584B2

公开(公告)日：2024-03-26

申请号：US17012646

申请日：2020-09-04

Applicant: Silviu Livescu ,  Oladele Bello

Inventor： Silviu Livescu ,  Oladele Bello

IPC: G01V1/50 ,  E21B47/07 ,  E21B47/14 ,  G01V1/28 ,  G06F30/27 ,  G06N20/00 ,  G06F119/02

CPC classification number: G01V1/50 ,  E21B47/07 ,  E21B47/14 ,  G01V1/282 ,  G06F30/27 ,  G06N20/00 ,  G06F2119/02

Abstract: Examples described herein provide a computer-implemented method that includes analyzing a first dataset by applying the first dataset to a first model to generate a first result. The method further includes analyzing a second dataset by applying the second dataset to a second model to generate a second result. The method further includes performing validation on the first model and the second model by comparing the first result to the second result. The method further includes, responsive to determining that the first result and the second result match, modifying an operational action of a surface assembly based on at least one of the first result or the second result. The method further includes, responsive to determining that the first result and the second result do not match, updating at least one of the first model or the second model.