公开(公告)号：US20140198612A1

公开(公告)日：2014-07-17

申请号：US14059935

申请日：2013-10-22

Applicant: OGG SERVICES SA

Inventor： Graham ROBERTS ,  Yu ZHANG

IPC: G01V1/36

CPC classification number: G01V1/36 ,  G01V1/362 ,  G01V1/368 ,  G01V1/38 ,  G01V2210/322

Abstract: Methods and systems for ghost compensation which are embedded in beam migration are described. The ghost compensation is based on the fact that the beam migration is performed in the slant-stack domain. The trace data is transformed to a mid-point slant-stack frequency domain where a deghosting operator is applied and then the deghosted trace data is inverse transformed to a time domain. The time domain trace data can then be further processed as desired.

Abstract translation: 描述嵌入光束迁移中的重影补偿的方法和系统。 鬼补偿基于在斜堆栈域中执行光束偏移的事实。 跟踪数据被转换为中点倾斜堆栈频域，其中应用了deghosting操作符，然后将反重影的跟踪数据逆向变换到时域。 然后可以根据需要进一步处理时域跟踪数据。

公开(公告)号：US20140177386A1

公开(公告)日：2014-06-26

申请号：US14103177

申请日：2013-12-11

Applicant: CGG SERVICES SA

Inventor： Eric FORGUES ,  Francois-Xavier GRESILLON ,  Julien COTTON

IPC: G01V1/04 ,  G01V1/34

CPC classification number: G01V1/04 ,  G01V1/003 ,  G01V1/02 ,  G01V1/053 ,  G01V1/133 ,  G01V1/34 ,  G01V1/36 ,  G01V2210/121 ,  G01V2210/1299 ,  G01V2210/20

Abstract: A seismic survey system for surveying a subsurface. The system includes a volumetric land source buried underground for generating P-waves; a non-volumetric land source buried underground for generating P- and S-waves; plural receivers distributed about the volumetric and non-volumetric land sources and configured to record seismic signals corresponding to the P- and S-waves; and a controller connected to the volumetric land source and the non-volumetric land source and configured to shot them in a given pattern.

Abstract translation: 用于测量地下的地震勘测系统。 该系统包括埋在地下的用于产生P波的体积陆源; 埋在地下的非体积地源产生P-和S波; 多个接收器分布在体积和非体积陆源上，并被配置为记录对应于P波和S波的地震信号; 以及连接到体积陆源和非体积陆源的控制器，并且被配置为以给定的图案拍摄它们。

公开(公告)号：US20140107930A1

公开(公告)日：2014-04-17

申请号：US14054505

申请日：2013-10-15

Applicant: CGG Services SA

Inventor： Julien Cotton ,  Florian Duret ,  Eric Forgues

IPC: G01V1/36

CPC classification number: G01V1/36 ,  G01V1/003 ,  G01V1/364 ,  G01V2210/1299 ,  G01V2210/56 ,  G01V2210/6122

Abstract: A method for acquiring and improving seismic data includes activating a first seismic source located below a geophysical surface at a first depth and a second seismic source located below the geophysical surface at a second depth, wherein the second depth is below the first depth, acquiring seismic data with a seismic receiver in conjunction with activating the first seismic source and the second seismic source, and aligning primary reflections within the seismic data to provide improved seismic data. The method may also include determining changes to the regions below the second depth by comparing improved seismic data corresponding to a first acquisition event with improved seismic data corresponding to a second acquisition event. A corresponding system is also disclosed herein.

Abstract translation: 一种用于获取和改进地震数据的方法包括：在第一深度处激活位于地球物理表面下方的第一地震源，以及在第二深度处位于地球物理表面下方的第二震源，其中第二深度低于第一深度，获取地震 数据与地震接收机结合激活第一震源和第二震源，并对准地震数据内的主反射以提供改进的地震数据。 该方法还可以包括通过将对应于第一获取事件的改进的地震数据与对应于第二获取事件的改进的地震数据进行比较，来确定低于第二深度的区域的改变。 本文还公开了相应的系统。

公开(公告)号：US20140078860A1

公开(公告)日：2014-03-20

申请号：US14026552

申请日：2013-09-13

Applicant: CGG SERVICES SA

Inventor： Gordon POOLE ,  Risto SILIQI

IPC: G01V1/36

CPC classification number: G01V1/364 ,  G01V1/36 ,  G01V2210/3246

Abstract: A method for determining interference noise recorded in a first seismic survey of a subsurface generated by a source in a second seismic survey. The method includes receiving seismic data recorded by seismic sensors of the first seismic survey, wherein the seismic data includes seismic waves that originate from the first seismic survey and seismic waves that originate from the second seismic survey; receiving actual relative shooting timing or actual shooting timing of seismic sources of the first and second seismic surveys; applying a processing algorithm to the seismic data to calculate the interference noise, wherein the processing algorithm that takes into consideration the actual relative shooting timing or the actual shooting timing of the seismic sources; and generating a final image of the subsurface based on the recorded seismic data from which the interference noise is subtracted.

Abstract translation: 一种用于确定由第二次地震勘测中的源产生的地下第一次地震勘测中记录的干扰噪声的方法。 该方法包括接收由第一地震勘测的地震传感器记录的地震数据，其中地震数据包括源于第一次地震勘测的地震波和源自第二次地震勘测的地震波; 接收第一次和第二次地震勘测的震源的实际相对拍摄时间或实际拍摄时间; 对地震数据应用处理算法来计算干扰噪声，其中考虑实际相对拍摄定时或地震源实际拍摄时间的处理算法; 以及基于从其中减去干扰噪声的记录的地震数据产生地下的最终图像。

公开(公告)号：US20140050049A1

公开(公告)日：2014-02-20

申请号：US13932800

申请日：2013-07-01

Applicant: WESTERNGECO L.L.C.

Inventor： PHILIP W. KITCHENSIDE ,  PHILIPPE CAPRIOLI

IPC: G01V1/36

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

Abstract: A method is provided for deghosting marine seismic data. Marine seismic data is provided. The marine seismic data has a total acoustic wavefield that includes an upgoing acoustic wavefield and a downgoing acoustic wavefield. A deghosting operation to determine a part of the total acoustic wavefield corresponding to one of the upgoing acoustic wavefield and the downgoing acoustic wavefield is performed. The deghosting operation accounts for a varying vertical distance between a detector of a streamer and a sea surface. One of the upgoing and downgoing acoustic wavefields in the total acoustic wavefield is identified based on a result of the deghosting operation. The downgoing acoustic wavefield is removed from the total acoustic wavefield.

Abstract translation: 提供了一种用于防止海洋地震数据衰减的方法。 提供海洋地震资料。 海洋地震数据具有包括上行声波场和下行声波场的总声波场。 执行用于确定与上行声波场和下行声波场中的一个对应的总声波场的一部分的去虚反射操作。 反虚反光操作考虑了拖缆的检测器和海面之间的垂直距离变化。 基于反虚影操作的结果来识别总声波场中的上行和下行声波场之一。 从总声波场去除下行的声波场。

公开(公告)号：US08634271B2

公开(公告)日：2014-01-21

申请号：US13600270

申请日：2012-08-31

Applicant: Ronan Sablon

Inventor： Ronan Sablon

IPC: G01V1/38

CPC classification number: G01V1/282 ,  G01V1/28 ,  G01V1/36 ,  G01V1/38 ,  G01V2210/56

Abstract: Methods and systems for variable wavelet correction are described. A variable depth dataset is deghosted before presentation to a multiples prediction step of multiples elimination model. In another aspect, the multiples prediction is reghosted before presentation to an adaptive subtraction step of the multiples elimination model. A source-side zero-phasing signature can be applied before deghosting and a predefined gain can be applied in the low and high frequency sides as part of deghosting and reghosting to compensate for the squaring effect produced by convolving wavelets.

Abstract translation: 描述了用于可变小波校正的方法和系统。 可变深度数据集在呈现到多次消除模型的多个预测步骤之前被消除晕影。 在另一方面，多次预测在呈现到多次消除模型的自适应减法步骤之前被重新生成。 可以在去虚反射之前应用源极零相位签名，并且可以在低频和高频侧应用预定义的增益作为消除重影和重构的一部分，以补偿由卷积小波产生的平方效应。

公开(公告)号：US20140019058A1

公开(公告)日：2014-01-16

申请号：US14005747

申请日：2011-04-01

Applicant: Burkay Donderici

Inventor： Burkay Donderici

IPC: G01V1/30

CPC classification number: G01V1/30 ,  G01V1/28 ,  G01V1/36 ,  G01V1/48 ,  G06F17/40 ,  G06F19/00

Abstract: Methods and systems for improving time-semblance processing of acoustic data are disclosed. Acoustic data is obtained from a tool in a formation. A delay filter is then designed and applied to the obtained acoustic data to obtain delayed acoustic data. Time semblance is then applied to this delayed acoustic data.

Abstract translation: 公开了用于改善声学数据的时间相似性处理的方法和系统。 声学数据从地层中的工具获得。 然后将延迟滤波器设计并应用于获得的声学数据以获得延迟的声学数据。 然后将时间相似性应用于该延迟的声学数据。

公开(公告)号：US08611184B2

公开(公告)日：2013-12-17

申请号：US11573964

申请日：2004-08-27

Applicant: Ralf Ferber

Inventor： Ralf Ferber

IPC: G01V1/00

CPC classification number: G01V1/36 ,  G01V2210/584

Abstract: A method and apparatus for a method for generating an estimated value of absorption parameter Q(t). In one embodiment, the method includes receiving an input seismic trace, applying a time variant Fourier transform to the input seismic trace to generate a time variant amplitude spectrum of the input seismic trace, dividing the natural logarithm of the time variant amplitude spectrum by −πf, and performing a power series approximation to the result with an index starting from one to generate an estimated value of R(t). R(t) is a ratio between traveltime t and the absorption parameter Q(t). The method further includes dividing t by R(t) to generate the estimated value of the absorption parameter Q(t).

Abstract translation: 一种用于产生吸收参数Q（t）的估计值的方法的方法和装置。 在一个实施例中，该方法包括接收输入的地震轨迹，对输入的地震轨迹应用时变傅立叶变换以产生输入的地震轨迹的时变幅度谱，将时变幅度谱的自然对数除以-pif 并且以从1开始的索引对结果执行幂级数逼近以产生估计值R（t）。 R（t）是行进时间t和吸收参数Q（t）之间的比值。 该方法还包括将t除以R（t）以产生吸收参数Q（t）的估计值。

公开(公告)号：US08553496B2

公开(公告)日：2013-10-08

申请号：US12703088

申请日：2010-02-09

Applicant: Marvin Glen Michael Decker ,  Gary Arthur Sitton ,  Robert Ian Bloor

Inventor： Marvin Glen Michael Decker ,  Gary Arthur Sitton ,  Robert Ian Bloor

IPC: G01V1/00 ,  G01V1/37 ,  G01V1/36

CPC classification number: G01V1/00 ,  G01V1/005 ,  G01V1/36 ,  G01V1/375

Abstract: Seismic acquisition systems are disclosed that allow contemporaneous seismic sources to be separated from a composite signal comprising two or more constituent seismic sources. In some embodiments, a representation of the composite signal may be developed that includes a noise contribution of undesired signals present in the composite signal. Additionally, an operator, referred to herein as an “annihilator”, may be developed such that it may be conditioned and inverted to minimize undesired noise contributions in the composite signal. This inversion may assist in recovering the constituent seismic sources from the composite signal. Furthermore, in some embodiments, the accuracy with which the constituent source measurements are approximated may be increased by implementing them as random sweeps having a conventional length.

Abstract translation: 公开了地震采集系统，其允许同时期的地震源与包括两个或多个构成地震源的复合信号分离。 在一些实施例中，可以开发复合信号的表示，其包括存在于复合信号中的不期望信号的噪声贡献。 此外，可以开发这里称为“湮没器”的操作器，使得可以对其进行调节和反转以最小化复合信号中的不期望的噪声贡献。 该反演有助于从复合信号中恢复组成的地震源。 此外，在一些实施例中，通过将它们实现为具有常规长度的随机扫描，可以增加近似构成源测量的精度。

公开(公告)号：US20130163378A1

公开(公告)日：2013-06-27

申请号：US13664767

申请日：2012-10-31

Applicant: CGGVeritas Services SA

Inventor： Gordon POOLE ,  Sergio GRION

IPC: G01V1/38

CPC classification number: G01V1/36 ,  G01V2210/32

Abstract: Computing device, computer instructions and method for denoising marine seismic data recorded with first and second seismic sensors. The method includes receiving first seismic data recorded with the first sensor in a time-space domain; receiving second seismic data recorded with the second sensor in the time-space domain, wherein the first and second seismic data are recorded at the same locations underwater; calculating with a processor models of the first and second seismic data in a transform domain that is different from the time-space domain; performing a wavefield separation using the first and second datasets in the transform domain; determining a noise in the transform domain corresponding to the second seismic data based on the wavefield separation; reverse transforming the noise from the transform domain into the time-space domain; and denoising the second seismic data by subtracting the noise in the time-space domain from the second seismic data.

Abstract translation: 用第一和第二地震传感器记录的海洋地震数据去噪的计算机，计算机指令和方法。 该方法包括在时空域中接收用第一传感器记录的第一地震数据; 在时空域中接收用第二传感器记录的第二地震数据，其中第一和第二地震数据被记录在水下的相同位置处; 在与时空域不同的变换域中用第一和第二地震数据的处理器模型进行计算; 使用变换域中的第一和第二数据集执行波场分离; 基于所述波场分离来确定与所述第二地震数据相对应的所述变换域中的噪声; 将变换域的噪声逆向转换为时空域; 以及通过从第二地震数据中减去时空域中的噪声来去噪第二地震数据。