Hybrid method for full waveform inversion using simultaneous and sequential source method
    1.
    发明授权
    Hybrid method for full waveform inversion using simultaneous and sequential source method 有权
    使用同步和顺序源方法进行全波形反演的混合方法

    公开(公告)号:US08437998B2

    公开(公告)日:2013-05-07

    申请号:US12903744

    申请日:2010-10-13

    IPC分类号: G06G7/48

    摘要: Method for simultaneous full-wavefield inversion of gathers of source (or receiver) encoded geophysical data to determine a physical properties model for a subsurface region, especially suitable for surveys where fixed receiver geometry conditions were not satisfied in the data acquisition. First, a shallow time window of the data (202) where the fixed receiver condition is satisfied is inverted by simultaneous encoded (203) source inversion (205). Then, the deeper time window of the data (208) is inverted by sparse sequential source inversion (209), using the physical properties model from the shallow time window (206) as a starting model (207). Alternatively, the shallow time window model is used to simulate missing far offset data (211) producing a data set satisfying the stationary receiver assumption, after which this data set is source encoded (212) and inverted by simultaneous source inversion (214).

    摘要翻译: 源(或接收机)编码地球物理数据的同时全波场反演方法,以确定地下区域的物理性质模型,特别适用于在数据采集中不满足固定接收机几何条件的调查。 首先,通过同时编码(203)源反转(205)来反转其中满足固定接收机条件的数据(202)的浅时间窗口。 然后,使用来自浅时间窗口(206)的物理属性模型作为起始模型(207),通过稀疏顺序源反转(209)将数据(208)的更深的时间窗口反转。 或者,浅时间窗模型用于模拟产生满足固定接收机假设的数据集的丢失远偏移数据(211),之后该数据集被源编码(212)并且由同时源反转(214)反转。

    Simultaneous Source Encoding and Source Separation As A Practical Solution For Full Wavefield Inversion
    2.
    发明申请
    Simultaneous Source Encoding and Source Separation As A Practical Solution For Full Wavefield Inversion 有权
    同源信源编码和源分离作为全波场反演的实际解决方案

    公开(公告)号:US20120073825A1

    公开(公告)日:2012-03-29

    申请号:US13229252

    申请日:2011-09-09

    IPC分类号: E21B43/00 G01V1/32

    CPC分类号: G01V1/28 G01V2210/67

    摘要: Method for simultaneous full-wavefield inversion of gathers of source (or receiver) encoded geophysical data to determine a physical properties model (118) for a subsurface region, especially suitable for surveys where fixed receiver geometry conditions were not satisfied in the data acquisition. Simultaneous source separation (104) is performed to lessen any effect of the measured geophysical data's not satisfying the fixed-receiver assumption. A data processing step (106) coming after the simultaneous source separation acts to conform model-simulated data (105) to the measured geophysical data (108) for source and receiver combinations that are missing in the measured geophysical data.

    摘要翻译: 用于同源全波场反演源(或接收机)编码的地球物理数据的方法,以确定地下区域的物理性质模型(118),特别适合于在数据采集中不满足固定接收机几何条件的调查。 执行同源分离(104)以减少测量的地球物理数据不满足固定接收机假设的任何影响。 在同时源分离之后进行的数据处理步骤(106)用于将模拟模拟数据(105)符合测量的地球物理数据(108),用于测量的地球物理数据中缺少的源和接收机组合。

    Simultaneous source encoding and source separation as a practical solution for full wavefield inversion
    3.
    发明授权
    Simultaneous source encoding and source separation as a practical solution for full wavefield inversion 有权
    同源源编码和源分离作为全波场反演的实际解决方案

    公开(公告)号:US08775143B2

    公开(公告)日:2014-07-08

    申请号:US13229252

    申请日:2011-09-09

    IPC分类号: G06G7/48

    CPC分类号: G01V1/28 G01V2210/67

    摘要: Method for simultaneous full-wavefield inversion of gathers of source (or receiver) encoded geophysical data to determine a physical properties model (118) for a subsurface region, especially suitable for surveys where fixed receiver geometry conditions were not satisfied in the data acquisition. Simultaneous source separation (104) is performed to lessen any effect of the measured geophysical data's not satisfying the fixed-receiver assumption. A data processing step (106) coming after the simultaneous source separation acts to conform model-simulated data (105) to the measured geophysical data (108) for source and receiver combinations that are missing in the measured geophysical data.

    摘要翻译: 用于同源全波场反演源(或接收机)编码的地球物理数据的方法,以确定地下区域的物理性质模型(118),特别适合于在数据采集中不满足固定接收机几何条件的调查。 执行同源分离(104)以减少测量的地球物理数据不满足固定接收机假设的任何影响。 在同时源分离之后进行的数据处理步骤(106)用于将模拟模拟数据(105)符合测量的地球物理数据(108),用于测量的地球物理数据中缺少的源和接收机组合。

    Hybride Method For Full Waveform Inversion Using Simultaneous and Sequential Source Method
    4.
    发明申请
    Hybride Method For Full Waveform Inversion Using Simultaneous and Sequential Source Method 有权
    使用同时和顺序源方法进行全波形反演的Hybride方法

    公开(公告)号:US20120073824A1

    公开(公告)日:2012-03-29

    申请号:US12903744

    申请日:2010-10-13

    IPC分类号: E21B43/00 G06G7/48

    摘要: Method for simultaneous full-wavefield inversion of gathers of source (or receiver) encoded geophysical data to determine a physical properties model for a subsurface region, especially suitable for surveys where fixed receiver geometry conditions were not satisfied in the data acquisition. First, a shallow time window of the data (202) where the fixed receiver condition is satisfied is inverted by simultaneous encoded (203) source inversion (205). Then, the deeper time window of the data (208) is inverted by sparse sequential source inversion (209), using the physical properties model from the shallow time window (206) as a starting model (207). Alternatively, the shallow time window model is used to simulate missing far offset data (211) producing a data set satisfying the stationary receiver assumption, after which this data set is source encoded (212) and inverted by simultaneous source inversion (214).

    摘要翻译: 源(或接收机)编码地球物理数据的同时全波场反演方法,以确定地下区域的物理性质模型,特别适用于在数据采集中不满足固定接收机几何条件的调查。 首先,通过同时编码(203)源反转(205)来反转其中满足固定接收机条件的数据(202)的浅时间窗口。 然后,使用来自浅时间窗口(206)的物理属性模型作为起始模型(207),通过稀疏顺序源反转(209)将数据(208)的更深的时间窗口反转。 或者,浅时间窗模型用于模拟产生满足固定接收机假设的数据集的丢失远偏移数据(211),之后该数据集被源编码(212)并且由同时源反转(214)反转。

    Orthogonal Source and Receiver Encoding
    6.
    发明申请
    Orthogonal Source and Receiver Encoding 有权
    正交源和接收机编码

    公开(公告)号:US20130238246A1

    公开(公告)日:2013-09-12

    申请号:US13748121

    申请日:2013-01-23

    IPC分类号: G01V1/00 G06F17/00 G01V9/00

    摘要: Method for performing simultaneous encoded-source inversion of geophysical data to estimate parameters of a physical property model (41), especially adapted for surveys without fixed-receiver acquisition geometry, such as marine seismic surveys with moving source and receivers. The encoding functions (32) used on the sources to generate one or more simultaneous encoded-source gathers of data (35), as well as to simulate the same (34), are orthogonal or pseudo-orthogonal with respect to cross-correlation. In addition, receivers are also encoded, with the receiver encoding being designed to make a given receiver less sensitive to sources to which it was not listening during the survey (38). The encoding functions may be temporal bandpass filters differing one from another by central frequency, phase, or both. Efficiency of the method may be further improved by grouping several sources into a super-source, grouping the corresponding gathers into a super-gather, and then applying the above encoding strategy.

    摘要翻译: 用于执行地球物理数据的同时编码源反演以估计物理性质模型(41)的参数的方法,特别适用于没有固定接收机采集几何的勘测,例如具有移动源和接收机的海洋地震勘测。 用于产生一个或多个同时编码的数据源集合(35)的源的编码功能(32)以及模拟相同的编码功能(34)在互相关方面是正交的或伪正交的。 另外,接收机也被编码,其中接收机编码被设计成使得给定的接收机在调查期间对其不倾听的源较不敏感(38)。 编码功能可以是通过中心频率,相位或两者彼此不同的时间带通滤波器。 可以通过将多个源分组成超级源,将相应的聚类分组成超级聚集,然后应用上述编码策略,可以进一步提高该方法的效率。

    Methods For Subsurface Parameter Estimation In Full Wavefield Inversion And Reverse-Time Migration
    8.
    发明申请
    Methods For Subsurface Parameter Estimation In Full Wavefield Inversion And Reverse-Time Migration 有权
    全波场反演和反向时间迁移的地下参数估计方法

    公开(公告)号:US20110194379A1

    公开(公告)日:2011-08-11

    申请号:US12984412

    申请日:2011-01-04

    IPC分类号: G01V1/28

    摘要: Method for converting seismic data to obtain a subsurface model of, for example, bulk modulus or density. The gradient of an objective function is computed (103) using the seismic data (101) and a background subsurface medium model (102). The source and receiver illuminations are computed in the background model (104). The seismic resolution volume is computed using the velocities of the background model (105). The gradient is converted into the difference subsurface model parameters (106) using the source and receiver illumination, seismic resolution volume, and the background subsurface model. These same factors may be used to compensate seismic data migrated by reverse time migration, which can then be related to a subsurface bulk modulus model. For iterative inversion, the difference subsurface model parameters (106) are used as preconditioned gradients (107).

    摘要翻译: 用于转换地震数据以获得例如体积模量或密度的地下模型的方法。 使用地震数据(101)和背景地下介质模型(102)计算目标函数的梯度(103)。 源和接收器照明在背景模型(104)中计算。 使用背景模型(105)的速度计算地震解析度。 使用源和接收器照明,地震分辨率体积和背景地下模型将梯度转换为差分地下模型参数(106)。 这些相同的因素可以用于补偿通过反向时间迁移迁移的地震数据,其然后可以与地下体积模量模型相关。 对于迭代反演,差分地下模型参数(106)用作预处理梯度(107)。

    Methods for subsurface parameter estimation in full wavefield inversion and reverse-time migration
    9.
    发明授权
    Methods for subsurface parameter estimation in full wavefield inversion and reverse-time migration 有权
    全波场反演和反向时间迁移的地下参数估计方法

    公开(公告)号:US08537638B2

    公开(公告)日:2013-09-17

    申请号:US12984412

    申请日:2011-01-04

    IPC分类号: G01V1/00 G01V1/28

    摘要: Method for converting seismic data to obtain a subsurface model of, for example, bulk modulus or density. The gradient of an objective function is computed (103) using the seismic data (101) and a background subsurface medium model (102). The source and receiver illuminations are computed in the background model (104). The seismic resolution volume is computed using the velocities of the background model (105). The gradient is converted into the difference subsurface model parameters (106) using the source and receiver illumination, seismic resolution volume, and the background subsurface model. These same factors may be used to compensate seismic data migrated by reverse time migration, which can then be related to a subsurface bulk modulus model. For iterative inversion, the difference subsurface model parameters (106) are used as preconditioned gradients (107).

    摘要翻译: 用于转换地震数据以获得例如体积模量或密度的地下模型的方法。 使用地震数据(101)和背景地下介质模型(102)计算目标函数的梯度(103)。 源和接收器照明在背景模型(104)中计算。 使用背景模型(105)的速度计算地震解析度。 使用源和接收器照明,地震分辨率体积和背景地下模型将梯度转换为差分地下模型参数(106)。 这些相同的因素可以用于补偿通过反向时间迁移迁移的地震数据,其然后可以与地下体积模量模型相关。 对于迭代反演,差分地下模型参数(106)用作预处理梯度(107)。

    Artifact Reduction In Iterative Inversion Of Geophysical Data
    10.
    发明申请
    Artifact Reduction In Iterative Inversion Of Geophysical Data 有权
    地球物理数据的迭代反演中的人工减少

    公开(公告)号:US20110276320A1

    公开(公告)日:2011-11-10

    申请号:US13045215

    申请日:2011-03-10

    IPC分类号: G06G7/48

    摘要: Method for reducing artifacts in a subsurface physical properties model (120) inferred by iterative inversion (140) of geophysical data (130), wherein the artifacts are associated with some approximation (110) made during the iterative inversion. In the method, some aspect of the approximation is changed (160) as the inversion is iterated such that the artifacts do not increase by coherent addition.

    摘要翻译: 一种用于减少通过地球物理数据(130)的迭代反演(140)推断的地下物理属性模型(120)中的伪影的方法,其中所述伪影与在迭代反演期间进行的一些近似(110)相关联。 在该方法中,随着反演被重复,近似的某些方面被改变(160),使得伪像不会通过相干相加而增加。