公开(公告)号：US20240255666A1

公开(公告)日：2024-08-01

申请号：US18160902

申请日：2023-01-27

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Marcin Szymon Dukalski

IPC: G01V1/34 ,  E21B44/00 ,  E21B49/00 ,  G01V1/36

CPC classification number: G01V1/345 ,  G01V1/36 ,  E21B7/04 ,  G01V2210/32 ,  G01V2210/74

Abstract: A system and method are disclosed for determining an internal multiples-free seismic dataset. The method includes obtaining a seismic dataset, wherein the seismic dataset comprises a plurality of space-time gathers, determining a first truncation operator, wherein the first truncation operator mutes samples of each trace after a first predetermined intercept time in a transform domain, and determining a second truncation operator, wherein the second truncation operator mutes samples of each trace before a second predetermined intercept time in the transform domain. The method further includes applying Marchenko internal multiple attenuation on the seismic dataset using the first and second truncation operators to determine the internal multiples-free seismic dataset.

公开(公告)号：US20240241279A1

公开(公告)日：2024-07-18

申请号：US18563023

申请日：2021-05-21

Applicant: Schlumberger Technology Corporation

Inventor： Philippe Caprioli ,  Paal Kristiansen

IPC: G01V1/36 ,  G01V1/24 ,  G01V1/28

CPC classification number: G01V1/36 ,  G01V1/24 ,  G01V1/282 ,  G01V2210/1423 ,  G01V2210/1427 ,  G01V2210/56

Abstract: A method includes receiving seismic data including signals collected using a receiver, the seismic data representing a subsurface volume, identifying a downgoing wavefield and an upgoing wavefield in the seismic data, identifying direct arrivals in the downgoing wavefield, estimating at least first-order multiple reflection signals in the upgoing wavefield based on the downgoing wavefield, the upgoing wavefield, and the direct arrivals, and generating seismic images representing the subsurface volume based at least in part on the at least first-order multiple reflection signals.

公开(公告)号：US11927710B2

公开(公告)日：2024-03-12

申请号：US17752913

申请日：2022-05-25

Applicant: CGG SERVICES SAS

Inventor： Gordon Poole

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

CPC classification number: G01V1/36 ,  G01V1/282 ,  G01V1/30 ,  G01V1/38 ,  G01V2210/1293 ,  G01V2210/1423 ,  G01V2210/32 ,  G01V2210/47 ,  G01V2210/56

Abstract: Computing device, computer instructions and method for processing input seismic data d. The method includes receiving the input seismic data d recorded in a first domain by seismic receivers that are towed in water, the input seismic data d including pressure data and/or and particle motion data; generating a model p in a second domain to describe the input data d; processing the model p to generate an output particle motion dataset; and generating an image of the surveyed subsurface based on the output particle motion dataset.

公开(公告)号：US11808907B2

公开(公告)日：2023-11-07

申请号：US17347114

申请日：2021-06-14

Applicant: SHEARWATER GEOSERVICES SOFTWARE INC.

Inventor： Chengbo Li ,  Charles C. Mosher ,  Robert G. Keys ,  Peter M. Eick ,  Sam T. Kaplan ,  Joel D. Brewer

IPC: G01V1/38 ,  G01V1/28 ,  G01V1/36 ,  G01V1/137

CPC classification number: G01V1/3808 ,  G01V1/137 ,  G01V1/282 ,  G01V1/36 ,  G01V2210/57

Abstract: A method for 2D seismic data acquisition includes determining source-point seismic survey positions for a combined deep profile seismic data acquisition with a shallow profile seismic data acquisition wherein the source-point positions are based on non-uniform optimal sampling. A seismic data set is acquired with a first set of air-guns optimized for a deep-data seismic profile and the data set is acquired with a second set of air-guns optimized for a shallow-data seismic profile. The data are de-blended to obtain a deep 2D seismic dataset and a shallow 2D seismic dataset.

公开(公告)号：US11754737B2

公开(公告)日：2023-09-12

申请号：US17197558

申请日：2021-03-10

Applicant: Saudi Arabian Oil Company

Inventor： Sami N. Awfi

IPC: G01V1/30 ,  G01V1/36

CPC classification number: G01V1/307 ,  G01V1/36 ,  G01V2210/23

Abstract: Some implementations of the present disclosure provide a method that include: accessing a set of seismic traces from a grid of locations inside an geo-exploration area, each seismic trace records seismic reflections from underneath the geo-exploration area at a location of the grid; accessing an input indicating a surface in the set of seismic traces; extracting a plurality of wavelets from the set of seismic traces, each wavelet covering an adjustable length around the surface; determining a reference wavelet for each wavelet of a corresponding adjustable length; and quantifying a quality of the surface based on correlating the plurality of wavelets with each reference wavelet of the corresponding adjustable length.

公开(公告)号：US11733417B2

公开(公告)日：2023-08-22

申请号：US16773224

申请日：2020-01-27

Applicant: WESTERNGECO LLC

Inventor： Ahmet Kemal Ozdemir ,  Bent Andreas Kjellesvig

IPC: G01V1/38 ,  G01V1/36

CPC classification number: G01V1/36 ,  G01V1/38 ,  G01V1/3808 ,  G01V2200/14 ,  G01V2210/56 ,  G01V2210/57

Abstract: Various implementations directed to quality control and preconditioning of seismic data are provided. In one implementation, a method may include receiving particle motion data from particle motion sensors disposed on seismic streamers. The method may also include performing quality control (QC) processing on the particle motion data. The method may further include performing preconditioning processing on the QC-processed particle motion data. The method may additionally include attenuating noise in the preconditioning-processed particle motion data.

公开(公告)号：US20190235112A1

公开(公告)日：2019-08-01

申请号：US16379875

申请日：2019-04-10

Applicant: PGS Geophysical AS

Inventor： Tilman Kluver ,  Stian Hegna

IPC: G01V1/36 ,  G01V1/37 ,  G01V1/38 ,  G01V1/48

CPC classification number: G01V1/36 ,  G01V1/368 ,  G01V1/37 ,  G01V1/3808 ,  G01V1/48 ,  G01V2210/1293 ,  G01V2210/1423 ,  G01V2210/1427 ,  G01V2210/21 ,  G01V2210/24

Abstract: Estimating an earth response can include deconvolving a multi-dimensional source wavefield from near-continuously recorded seismic data recorded at a receiver position. The deconvolving can include spreading the near-continuously recorded seismic data across a plurality of possible source emission angles. The result of the deconvolution can be the earth response estimate.

公开(公告)号：US20190187317A1

公开(公告)日：2019-06-20

申请号：US16099732

申请日：2017-05-30

Applicant: SOUNDSABRE LIMITED

Inventor： Giles Francis Tanfield WATTS ,  Ian Gordon JACK ,  Mark VOLANTHEN

IPC: G01V1/52 ,  G01V1/22

CPC classification number: G01V1/42 ,  G01V1/208 ,  G01V1/36 ,  G01V1/3808 ,  G01V1/52 ,  G01V2210/121 ,  G01V2210/1234 ,  G01V2210/1429 ,  G01V2210/3246 ,  G01V2210/56 ,  G01V2210/57

Abstract: An offshore reservoir monitoring system (100) comprises a vertical array (110) with multiple seismic receivers (120) less than 10 m apart. During operation, the vertical array is deployed in a shallow borehole (111) in a seabed (10) away from noise at a seafloor (11). The dense spacing of receivers (120) ensures an adequate number of sensors (120) in the shallow borehole (111) and a spatial sampling rate appropriate for suppressing coherent noise in the shallow layers under the seafloor (11). Vertical arrays (110) can be added to the system (100) at any time.

公开(公告)号：US20180143338A1

公开(公告)日：2018-05-24

申请号：US15572016

申请日：2016-05-04

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： David Fraser HALLIDAY

IPC: G01V1/36 ,  G01V1/24 ,  G01V1/38

CPC classification number: G01V1/36 ,  G01V1/247 ,  G01V1/38 ,  G01V2210/32 ,  G01V2210/56

Abstract: Marine seismic data can be processed to remove or reduce two or more source side acquisition effects jointly when 1) the effects are placed in the same data domain as the received data and 2) the effects are described using the same basis functions which may signify representing the received data and the effects in the same chosen transform domain. The data effects may include source signature removal, source radiation pattern removal, residual shot noise suppression and data regularization, multi-channel reconstruction or regularization, prediction of sea surface multiples, separation of simultaneous sources etc. The joint processing can use iterative or non-iterative inversion technique, where the iterative inversion technique may be a matching pursuit technique.

公开(公告)号：US20180081072A1

公开(公告)日：2018-03-22

申请号：US15559416

申请日：2016-03-21

Applicant: Schlumberger Technology Corporation

Inventor： James Richett ,  Philippe Caprioli

IPC: G01V1/36

CPC classification number: G01V1/36 ,  G01V1/364 ,  G01V1/38 ,  G01V2210/56

Abstract: A method for deghosting marine seismic streamer data includes receiving the marine seismic data recorded from a single streamer. A representation of an upgoing wavefield in the marine seismic data is defined. The representation of the upgoing wavefield includes a first wave component in a plane and a second wave component that is perpendicular to the plane. A linear system is built that models a wavefield using the representation. The wavefield includes the upgoing wavefield and a downgoing ghost wavefield. The upgoing wavefield is estimated, within the representation, by inverting the linear system.