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    System and method for forming a seismic velocity model and imaging a subterranean region
    1.
    发明授权
    System and method for forming a seismic velocity model and imaging a subterranean region 有权

    公开(公告)号：US11971513B2

    公开(公告)日：2024-04-30

    申请号：US17326534

    申请日：2021-05-21

    Applicant: SAUDI ARABIAN OIL COMPANY

    Inventor： Weiguang He ,  Yubing Li ,  Lu Liu ,  Yi Luo

    IPC: G01V1/28 ,  E21B49/00 ,  G01V1/30 ,  G01V1/34 ,  G06F30/20

    CPC classification number: G01V1/282 ,  E21B49/00 ,  G01V1/303 ,  G01V1/34 ,  G06F30/20 ,  G01V2210/6222 ,  G01V2210/679

    Abstract: Methods of and systems for forming an image of a subterranean region of interest are disclosed. The method includes obtaining an observed seismic dataset and a seismic velocity model for the subterranean region of interest and generating a simulated seismic dataset based on the seismic velocity model and the source and receiver geometry of the observed seismic dataset. The method also includes forming a plurality of time-windowed trace pairs from the simulated and the observed seismic datasets, and forming an objective function based on a penalty function and a cross-correlation between the members of each pair. The method further includes determining a seismic velocity increment based on the extremum of the objective function and forming an updated seismic velocity model by combining the seismic velocity increment and the seismic velocity model, and forming the image of the subterranean region of interest based on the updated seismic velocity model.

    A METHOD AND A COMPUTING SYSTEM FOR SEISMIC IMAGING A GEOLOGICAL FORMATION
    2.
    发明申请
    A METHOD AND A COMPUTING SYSTEM FOR SEISMIC IMAGING A GEOLOGICAL FORMATION 审中-公开

    公开(公告)号：US20170184748A1

    公开(公告)日：2017-06-29

    申请号：US15312863

    申请日：2014-05-21

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Vasily Grigoryevich BAYDIN ,  Leonid Evgenyevich DOVGILOVICH ,  Ivan Lvovich SOFRONOV

    IPC: G01V1/36

    CPC classification number: G01V1/36 ,  G01V1/282 ,  G01V2210/161 ,  G01V2210/51 ,  G01V2210/679 ,  G06T17/05

    Abstract: Data of vertical seismic profile in the geological formation are recorded and at least one estimation of a geological formation local model dip is performed, also at least one dynamic dip estimation is performed for at least one wavetype excited by sources and registered by receivers using directionally-based vectors. A difference between the local model dip estimation and the dynamic dip estimation is calculated. Based on the calculated difference between the local model dip estimation and the dynamic dip estimation at least one weighting coefficient is calculated. The calculated at least one weighting coefficient is used for determining at least one formulae for imaging with the use of elastic waves at reverse time migration conditions taking into account a dip angle of the geological formation. The determined at least one formulae is applied to the obtained vertical seismic profile data and at least one image of the geological formation is produced.

    SYSTEM AND METHOD FOR RECONSTRUCTED WAVEFIELD INVERSION
    3.
    发明申请
    SYSTEM AND METHOD FOR RECONSTRUCTED WAVEFIELD INVERSION 审中-公开

    公开(公告)号：US20170168177A1

    公开(公告)日：2017-06-15

    申请号：US15375471

    申请日：2016-12-12

    Applicant: ION Geophysical Corporation

    Inventor： Chao Wang ,  Howard David Yingst

    IPC: G01V1/28 ,  G01V1/36

    CPC classification number: G01V1/282 ,  G01V1/36 ,  G01V2210/614 ,  G01V2210/6222 ,  G01V2210/675 ,  G01V2210/679

    Abstract: Computer systems and methods are provided for seismic wavefield processing, including time domain reconstructed full wavefield inversion (TDRFWI) of seismic survey data. Suitable methods include forward propagating a source signal based on a model of a subsurface region, generating a residual based on the forward-propagated wavefield in comparison to field data, back propagating the residual to generate a reconstructed source perturbation, and adding the reconstructed source perturbation to the source signal to generate a reconstructed source wavefield. The reconstructed source perturbation can be forward propagated to generate a reconstructed wavefield perturbation, and added to the reconstructed wavefield perturbation to reconstruct the wavefield. The propagations can be performed in the time domain, and the model can be updated based on the reconstructed wavefield and reconstructed source perturbation to generate high fidelity subsurface images.

    SYSTEMS AND METHODS FOR REMOVAL OF ELECTROMAGNETIC DISPERSION AND ATTENUATION FOR IMAGING OF PROPPANT IN AN INDUCED FRACTURE
    6.
    发明申请
    SYSTEMS AND METHODS FOR REMOVAL OF ELECTROMAGNETIC DISPERSION AND ATTENUATION FOR IMAGING OF PROPPANT IN AN INDUCED FRACTURE 有权
    用于去除电磁散射和衰减的系统和方法，用于在诱导性碎片中成像

    公开(公告)号：US20160047933A1

    公开(公告)日：2016-02-18

    申请号：US14460715

    申请日：2014-08-15

    Applicant: Carbo Ceramics Inc.

    Inventor： Lewis Bartel

    IPC: G01V3/26 ,  E21B43/267 ,  E21B47/00 ,  E21B17/00

    CPC classification number: G01V99/005 ,  E21B43/26 ,  E21B43/267 ,  E21B47/00 ,  E21B47/0002 ,  E21B47/122 ,  E21B49/00 ,  G01V3/20 ,  G01V3/26 ,  G01V3/30 ,  G01V3/38 ,  G01V2210/67 ,  G01V2210/671 ,  G01V2210/679

    Abstract: Systems and methods for generating a three-dimensional image of a proppant-filled hydraulically-induced fracture in a geologic formation are provided. The image may be generated by capturing electromagnetic fields generated or scattered by the proppant-filled fracture, removing dispersion and/or an attenuation effects from the captured electromagnetic fields, and generating the image based on the dispersion and/or attenuation corrected fields. Removing the dispersion and/or attenuation effects may include back propagating the captured electromagnetic fields in the time domain to a source location. The image may be generated based on locations at which the back propagated fields constructively interfere or may be generated based on a model of the fracture defined using the back propagated fields.

    Abstract translation: 提供了用于在地质层中产生支撑剂填充的水力诱发断裂的三维图像的系统和方法。 可以通过捕获由支撑剂填充的断裂产生或散射的电磁场来消除图像，从捕获的电磁场中去除色散和/或衰减效应，以及基于色散和/或衰减校正场产生图像。 去除色散和/或衰减效应可以包括将捕获的时域中的电磁场反向传播到源位置。 可以基于基于使用反向传播场定义的裂缝的模型而建立性地干扰或可以生成反向传播场的位置来生成图像。

    Full-waveform inversion in the traveltime domain
    8.
    发明授权
    Full-waveform inversion in the traveltime domain 有权
    旅行时域中的全波形反演

    公开(公告)号：US09244181B2

    公开(公告)日：2016-01-26

    申请号：US12581372

    申请日：2009-10-19

    Applicant: James Rickett ,  Paul Childs

    Inventor： James Rickett ,  Paul Childs

    IPC: G01V1/28

    CPC classification number: G01V1/282 ,  G01V2210/679

    Abstract: A method for processing seismic data. The method includes predicting seismic data according to an earth model representing seismic properties of subterranean formations in the earth, determining a difference between seismic data acquired from one or more seismic receivers and the predicted seismic data, projecting the difference into a model space in traveltime, and updating the earth model according to the projected difference. As a result, the updated earth model more accurately represents the seismic properties of subterranean formations in the earth.

    Abstract translation: 一种地震数据处理方法。 该方法包括根据表示地球地层地震性质的地球模型预测地震数据，确定从一个或多个地震接收机获取的地震数据与预测地震数据之间的差异，将差异投影到旅行时间的模型空间中， 并根据投影差异更新地球模型。 因此，更新的地球模型更准确地表示地球中地下地层的抗震性质。

    Reverse time migration model dip-guided imaging
    9.
    发明授权
    Reverse time migration model dip-guided imaging 有权
    反向时间迁移模型浸取引导成像

    公开(公告)号：US09188689B2

    公开(公告)日：2015-11-17

    申请号：US13725154

    申请日：2012-12-21

    Applicant: WESTERNGECO L.L.C.

    Inventor： Kui Lin ,  Igor Borodin ,  Leonid Dovgilovich ,  Vasily Baydin ,  Ivan Sofronov

    IPC: G01V1/28

    CPC classification number: G01V1/282 ,  G01V1/28 ,  G01V2210/51 ,  G01V2210/679

    Abstract: Computing systems and methods to producing a reverse time migration model dip-guided image using processed vertical seismic profile data are provided. In one embodiment, vertical seismic profile data for a subsurface geological formation is obtained. One or more dip estimates corresponding to the subsurface geological formation are also obtained. One or more model dip-guided reverse time migration imaging conditions are determined and applied to the obtained vertical seismic profile data to produce the processed vertical seismic profile data.

    Abstract translation: 提供了使用处理的垂直地震剖面数据产生反向时间偏移模型汲取图像的计算系统和方法。 在一个实施例中，获得了地下地质构造的垂直地震剖面数据。 还获得了对应于地下地质构造的一个或多个倾斜估计。 确定一个或多个模型浸渍引导反向时间迁移成像条件并将其应用于所获得的垂直地震剖面数据，以产生经处理的垂直地震剖面数据。

    WAVE-EQUATION BASED PROCESSING AND ANALYSIS OF IMAGED SEISMIC DATA
    10.
    发明申请
    WAVE-EQUATION BASED PROCESSING AND ANALYSIS OF IMAGED SEISMIC DATA 审中-公开
    基于波方程的加工和成像地震数据分析

    公开(公告)号：US20150276956A1

    公开(公告)日：2015-10-01

    申请号：US14670553

    申请日：2015-03-27

    Applicant: CGG SERVICES SA

    Inventor： Adel KHALIL ,  Henning HOEBER

    IPC: G01V1/36 ,  G01V1/38

    CPC classification number: G01V1/28 ,  G01V2210/51 ,  G01V2210/679

    Abstract: A device, medium and method for processing seismic data associated with a subsurface of the earth. The method includes a step of receiving seismic data (d) recorded with one or more seismic receivers; a step of processing the seismic data (d) with a first processing algorithm to obtain imaged seismic data (D); a step of constructing wave-fields (W) corresponding to the imaged seismic data (D) by solving a given wave equation, wherein the wave-fields (W) have an added axis (τ) which maps back spectral properties of the imaged seismic data to its pre-imaging state; and a step of processing the wave-fields (W) along the axis (τ) with a second processing algorithm.

    Abstract translation: 用于处理与地球地下相关的地震数据的装置，介质和方法。 该方法包括接收用一个或多个地震接收机记录的地震数据（d）的步骤; 用第一处理算法处理地震数据（d）以获得成像的地震数据（D）的步骤; 通过求解给定波动方程来构造对应于成像地震数据（D）的波场（W）的步骤，其中波场（W）具有映射成像地震的光谱特性的附加轴（τ） 数据到其预成像状态; 以及利用第二处理算法来处理沿轴（τ）的波场（W）的步骤。

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