SEISMIC ACQUISITION METHODS
    92.
    发明公开
    SEISMIC ACQUISITION METHODS 审中-公开
    地震采集方法

    公开(公告)号:EP3227723A1

    公开(公告)日:2017-10-11

    申请号:EP15808527.4

    申请日:2015-12-01

    IPC分类号: G01V1/00 G01V1/20 G01V1/38

    摘要: The presently disclosed seismic acquisition technique employs a receiver array and a processing methodology that are designed to attenuate the naturally occurring seismic background noise recorded along with the seismic data during the acquisition. The approach leverages the knowledge that naturally occurring seismic background noise moves with a slower phase velocity than the seismic signals used for imaging and inversion and, in some embodiments, may arrive from particular preferred directions. The disclosed technique comprises two steps: 1) determining from the naturally occurring seismic background noise in the preliminary seismic data a range of phase velocities and amplitudes that contain primarily noise and the degree to which that noise needs to be attenuated, and 2) designing an acquisition and processing method to attenuate that noise relative to the desired signal.

    摘要翻译: 目前公开的地震采集技术采用接收器阵列和处理方法,其被设计为衰减在采集期间与地震数据一起记录的自然产生的地震背景噪声。 该方法利用了自然发生的地震背景噪声以比用于成像和反演的地震信号更慢的相速度移动并且在一些实施例中可以从特定的优选方向到达的知识。 所公开的技术包括两个步骤:1)从初始地震数据中的自然发生的地震背景噪声确定主要包含噪声的相速度和幅度的范围以及该噪声需要被衰减的程度,以及2)设计 采集和处理方法来衰减相对于所需信号的噪声。

    COMPENSATING FOR SPACE AND SLOWNESS/ANGLE BLURRING OF REFLECTIVITY
    93.
    发明公开
    COMPENSATING FOR SPACE AND SLOWNESS/ANGLE BLURRING OF REFLECTIVITY 审中-公开
    补偿反射率的空间和水平/角度漂移

    公开(公告)号:EP3215872A1

    公开(公告)日:2017-09-13

    申请号:EP15857017.6

    申请日:2015-10-06

    IPC分类号: G01V1/28 G01V1/30 G01V1/34

    摘要: Systems and methods for compensating for spatial and slowness or angle blurring of plane-wave reflection coefficients in imaging. A wave field may be determined at a reference depth proximate to a reflector for a shot record. A receiver-side blurring function may be determined at the reference depth. An aggregate blurring function may be constructed based at least partially on the source wave field and the receiver-side blurring function. A plane-wave reflection coefficients may be determined based at least partially on the aggregate blurring function.

    摘要翻译: 用于补偿成像中平面波反射系数的空间和慢度或角度模糊的系统和方法。 可以在靠近反射镜的参考深度处为拍摄记录确定波场。 可以在参考深度处确定接收机侧模糊函数。 可以至少部分地基于源波场和接收机侧模糊函数来构建聚合模糊函数。 可以至少部分地基于聚集模糊函数来确定平面波反射系数。

    Determining a position of a geological layer relative to a wavelet response in seismic data
    94.
    发明公开
    Determining a position of a geological layer relative to a wavelet response in seismic data 审中-公开
    在地震数据中确定地质层相对于小波响应的位置

    公开(公告)号:EP2420863A3

    公开(公告)日:2017-08-09

    申请号:EP11177448.5

    申请日:2011-08-12

    发明人: Peirle, Thomas

    IPC分类号: G01V1/30 G01V1/28

    摘要: Determining geological layer location in a subterranean formation, including receiving seismic data representing an interaction of the geological layer with propagation of a seismic wave, identifying a source wavelet representing a portion of the seismic wave impinging on a boundary of the geological layer, providing a geological layer template of the geological layer including primary and secondary reflection interfaces associated with reflectivity based on material properties of the geological layer, generating a wavelet response template by applying the source wavelet to the geological layer template using a mathematical convolution operation to model seismic wave interference caused by the primary and secondary reflection interfaces, identifying an extremum of the seismic data, and determining, based on the extremum, the location of the geological layer in the subterranean formation using the wavelet response template.

    摘要翻译: 确定地下地层中的地质层位置,包括接收表示地质层与地震波传播的相互作用的地震数据,识别表示冲击地质层边界的地震波的一部分的源小波,提供地质层 包括基于地质层的材料特性与反射率相关联的主要和次要反射界面的地层的多层模板,通过使用数学卷积运算将源小波应用于地质层模板以生成小波响应模板,以模拟所引起的地震波干扰 通过主要和次要反射界面识别地震数据的极值,并且基于极值使用小波响应模板确定地层中地质层的位置。

    SEISMIC INVERSION CONSTRAINED BY REAL-TIME MEASUREMENTS
    95.
    发明公开
    SEISMIC INVERSION CONSTRAINED BY REAL-TIME MEASUREMENTS 审中-公开
    地震反演受实时测量约束

    公开(公告)号:EP3191684A1

    公开(公告)日:2017-07-19

    申请号:EP15839896.6

    申请日:2015-09-04

    摘要: A method is provided for constraining a seismic inversion using real-time measurements. The method comprises: receiving a seismic signal/seismic data; obtaining logging-while-drilling (LWD) measurements made during a drilling procedure; using the LWD measurements to constrain an inversion of the seismic signal/data; and using the inverted seismic signal/data to: obtain an image of a subterranean section of the Earth, determine properties of the subterranean section of the Earth and/or update a model of the subterranean section of the Earth.

    摘要翻译: 提供了一种使用实时测量来约束地震反演的方法。 该方法包括:接收地震信号/地震数据; 获得钻井过程期间进行的随钻测井(LWD)测量; 使用LWD测量来约束地震信号/数据的反演; 并且使用反演的地震信号/数据来:获得地球的地下部分的图像,确定地球的地下部分的特性和/或更新地球的地下部分的模型。

    ESTIMATE OF FORMATION MOBILITY FROM STONELEY WAVEFORMS
    97.
    发明公开
    ESTIMATE OF FORMATION MOBILITY FROM STONELEY WAVEFORMS 审中-公开
    华盛顿特区

    公开(公告)号:EP3122992A1

    公开(公告)日:2017-02-01

    申请号:EP14896050.3

    申请日:2014-06-24

    IPC分类号: E21B47/00 G01V1/40 G01V1/48

    摘要: Various embodiments include apparatus and methods to estimate formation mobility from Stoneley waveforms. An objective function can be generated that represents misfit between measured Stoneley pressure values and synthetic pressure values. A minimization process can be applied to the objective function to estimate formation mobility and intrinsic attenuation. Additional apparatus, systems, and methods are disclosed.

    摘要翻译: 各种实施例包括从Stoneley波形估计地层迁移率的装置和方法。 可以产生一个目标函数,代表测量的Stoneley压力值和合成压力值之间的失配。 最小化过程可以应用于目标函数以估计形成迁移率和固有衰减。 公开了附加装置,系统和方法。

    Using a wave propagator for transversely isotropic media
    98.
    发明公开
    Using a wave propagator for transversely isotropic media 审中-公开
    对于Wellenpropagators横向各向同性介质的应用

    公开(公告)号:EP2811321A3

    公开(公告)日:2016-11-02

    申请号:EP14183434.1

    申请日:2009-01-16

    IPC分类号: G01V1/28

    摘要: A technique includes: providing seismic measurements of a transversely isotropic medium having a symmetry axis that is tilted relative to a vertical axis; modeling (504) a seismic wavefield in the media based at least in part on orientation of the symmetry axis and a nonzero shear velocity for the medium; and processing (508) the seismic measurements of the media in accordance with the modeled seismic wavefield to obtain information associated with the medium.