公开(公告)号：US09874651B2

公开(公告)日：2018-01-23

申请号：US13736342

申请日：2013-01-08

Applicant: CGGVERITAS SERVICES SA

Inventor： Thierry Brizard ,  Jean-Paul Gruffeille

IPC: G01V1/38 ,  B63B22/02 ,  B63B22/18 ,  G01V1/18 ,  B63B22/00

CPC classification number: G01V1/3835 ,  B63B22/02 ,  B63B22/18 ,  B63B2022/006 ,  G01V1/186 ,  G01V1/3817 ,  G01V1/3843

Abstract: A buoy for recording seismic signals while underwater. The buoy includes a body; a buoyancy system configured to control a buoyancy of the body to descend to a predetermined depth (H1); a propulsion system configured to actively adjust a position of the body at a given position (X, Y); a seismic sensor located on the body and configured to record the seismic signals; and a control device configured to control the buoyancy system to maintain the body substantially at the predetermined depth (H1) and to control the propulsion system to maintain the body substantially at the given position (X, Y) while the buoy records seismic data, and also to instruct the seismic sensor when to record seismic signals.

公开(公告)号：US09651696B2

公开(公告)日：2017-05-16

申请号：US13894643

申请日：2013-05-15

Applicant: CGGVERITAS SERVICES SA

Inventor： Can Peng ,  Rongxin Huang ,  Biniam Asmerom

IPC: G01V1/36 ,  G01V1/28

CPC classification number: G01V1/364 ,  G01V1/28

Abstract: Methods and systems for shear noise attenuation based on matching vertical particle velocity data and pressure data are described. The shear noise attenuation is based on the fact that different stages of the analysis can be performed with different numbers of wavelet orientations. The analysis is performed for frequency sub-bands for all wave numbers and vice versa.

公开(公告)号：US09618641B2

公开(公告)日：2017-04-11

申请号：US13687084

申请日：2012-11-28

Applicant: CGGVERITAS SERVICES SA

Inventor： Benoit Teyssandier ,  Laurent Ruet

IPC: G01V1/38 ,  G01V1/00

CPC classification number: G01V1/38 ,  G01V1/005 ,  G01V2210/1293

Abstract: Controller and method for determining a driving signal of a vibro-acoustic source element that is configured to generate acoustic waves in water. The method includes estimating at least one physical constraint of the vibro-acoustic source element; modeling a ghost function determined by a surface of the water; setting a target energy spectrum density to be emitted by the vibro-acoustic source element during the driving signal; and determining the driving signal in a controller based on at least one physical constraint, the ghost function, and the target energy spectrum density.

公开(公告)号：US09217803B2

公开(公告)日：2015-12-22

申请号：US13739585

申请日：2013-01-11

Applicant: CGGVERITAS SERVICES SA

Inventor： Pierre Hugonnet

IPC: G01V1/36

CPC classification number: G01V1/36 ,  G01V2210/20 ,  G01V2210/53

Abstract: Computing device and method for calculating time-shifts associated with travel-times of seismic waves emitted by a source and recorded by plural seismic detectors after reflection from a subsurface structure. The method includes receiving seismic data (d) that includes plural traces related to a subsurface, wherein the seismic data (d) is in a time-space domain; transforming with a processor the seismic data (d) from the time-space domain to a radon domain; picking linear events from the seismic data in the radon domain; calculating the time-shifts associated with the picked linear events; correcting the seismic data (d) based on the time-shifts to obtain new seismic data (d′); and computing an image of the subsurface based on the new seismic data (d′). The time-shifts are calculated per trace and per event.

Abstract translation: 用于计算与来自地震发射的地震波的行进时间相关联的时移的计算装置和方法，并且从地下结构反射后由多个地震检测器记录。 该方法包括接收包括与地下相关的多个迹线的地震数据（d），其中地震数据（d）处于时空域; 用处理器将地震数据（d）从时空域转变为氡域; 从氡域的地震数据中挑选线性事件; 计算与所选线性事件相关联的时移; 基于时移校正地震数据（d）以获得新的地震数据（d'）; 以及基于新的地震数据（d'）计算地下图像。 每个跟踪和每个事件计算时移。

公开(公告)号：US08997675B2

公开(公告)日：2015-04-07

申请号：US13685778

申请日：2012-11-27

Applicant: CGGVeritas Services SA

Inventor： Raphael MacQuin ,  Helene Tonchia ,  Thierry Grousset

IPC: B63B21/66 ,  G01V1/38

CPC classification number: B63B21/66 ,  B63B21/663 ,  G01V1/3817

Abstract: A method and a marine towing system for towing streamers or sources. The towing system includes a connecting line; a first paravane connected to the connecting line, wherein the connecting line is configured to connect the first paravane to a vessel; a spur line connected to the first paravane and configured to provide a tension to maintain streamers apart from each other; and a second paravane connected to the connecting line, between the first paravane and the vessel. The second paravane is configured to increase an angle (α4) between the connecting line and the spur line.

Abstract translation: 一种用于拖曳拖缆或来源的方法和海洋牵引系统。 牵引系统包括连接线; 连接到所述连接线的第一歧管，其中所述连接线被配置为将所述第一准胺连接到容器; 连接到第一歧管并且被配置为提供张力以保持拖缆彼此分离的支线; 以及连接到连接管线的第二歧管，在第一歧管和容器之间。 第二通孔构造成增加连接线和支线之间的角度（α4）。

公开(公告)号：US20130343154A1

公开(公告)日：2013-12-26

申请号：US13859807

申请日：2013-04-10

Applicant: CGGVERITAS SERVICES SA

Inventor： Yu ZHANG ,  Graham ROBERTS ,  Lian DUAN

IPC: G01V1/36 ,  G01V1/38

CPC classification number: G01V1/36 ,  G01V1/282 ,  G01V1/366 ,  G01V1/375 ,  G01V1/38 ,  G01V2210/56 ,  G01V2210/679

Abstract: Methods and systems for compensating for source and receiver ghost effects in a reverse time migration (RTM) equation are described. Boundary conditions associated with the RTM acoustic wave equations for the source and recorded wavefields are modified. The resultant modified RTM acoustic wave equations are solved to generate ghost compensated modeled seismic images. In another aspect an imaging condition is also modified and the resultant RTM acoustic wave equations are solved to generate velocity and impedance perturbation images.

Abstract translation: 描述了用于补偿反向时间偏移（RTM）方程中的源和接收机重影效应的方法和系统。 与源和记录波场的RTM声波方程相关的边界条件被修改。 求解得到的改进的RTM声波方程，以产生重影补偿建模的地震图像。 在另一方面，还修改了成像条件，并且求解得到的RTM声波方程以产生速度和阻抗扰动图像。

公开(公告)号：US20130308420A1

公开(公告)日：2013-11-21

申请号：US13894036

申请日：2013-05-14

Applicant: Cggveritas Services Sa

Inventor： Robert SOUBARAS

IPC: G01V1/28

CPC classification number: G01V1/282 ,  G01V1/366 ,  G01V1/38 ,  G01V2210/56

Abstract: A method for deghosting seismic data collected with a seismic system, the seismic data being related to a subsurface of a body of water. The method includes receiving the seismic data recorded by detectors distributed along a variable-depth profile; calculating migrated (d1) and mirror-migrated (d2) gathers based on the seismic data, wherein the migrated and mirror-migrated gathers depend on a feature characterizing a configuration of the seismic system; applying a joint deconvolution model to the migrated and mirror-migrated gathers (d1, d2) to calculate a single deghosted gather (dg); and generating a final image of the subsurface based on the single deghosted gather (dg). The feature is not present in a gather after a step of stacking that is performed prior to generating the final image.

Abstract translation: 一种用地震系统收集的地震数据去晕影的方法，地震数据与水体的地下相关。 该方法包括接收由沿着可变深度剖面分布的检测器记录的地震数据; 基于地震数据计算迁移的（d1）和镜像迁移（d2）聚集，其中迁移和镜像迁移的聚集取决于表征地震系统的配置的特征; 对已迁移和镜像迁移的集合（d1，d2）应用联合去卷积模型以计算单个反重影聚集（dg）; 并且基于单个衰减聚集（dg）生成地下的最终图像。 在生成最终图像之前执行的堆叠步骤之后，该特征不存在于聚集中。

公开(公告)号：US20130282292A1

公开(公告)日：2013-10-24

申请号：US13845819

申请日：2013-03-18

Applicant: CGGVERITAS SERVICES SA

Inventor： Ping WANG ,  Can PENG

IPC: G01V1/36

CPC classification number: G01V1/364 ,  G01V1/38 ,  G01V2210/1423 ,  G01V2210/52 ,  G01V2210/56 ,  G01V2210/671

Abstract: Methods and systems for optimized receiver-based ghost filter generation are described. The optimized ghost filter self-determines its parameters based on an iterative calculation of recorded data transformed from a time-space domain to a Tau-P domain. An initial ghost filter prediction is made based on generating mirror data from the recorded data and using a least squares technique during a premigration stage.

Abstract translation: 描述了用于优化基于接收机的重影滤波器生成的方法和系统。 基于从时空域到Tau-P域的记录数据的迭代计算，优化的重影滤波器自我确定其参数。 基于从记录数据生成镜像数据并在预迁移阶段使用最小二乘法进行初始重滤波器预测。

公开(公告)号：US20130238249A1

公开(公告)日：2013-09-12

申请号：US13787884

申请日：2013-03-07

Applicant: CGGVERITAS SERVICES SA

Inventor： Sheng XU ,  Feng CHEN ,  Gilles LAMBARE ,  Yu ZHANG

IPC: G01V1/38

CPC classification number: G01V1/3808 ,  G01V1/303 ,  G01V1/38

Abstract: A system and method are described herein for generating a velocity model of returned seismic signals for under-ocean floor environments. The system and method generate a series of source signals, receive a corresponding set of direct signals, reflected signals, and refracted signals, solve a velocity model equation using a full waveform inversion function with respect to the received set of direct signals, reflected signals and refracted signals to minimize a least square misfit function by relaxing a dependency on low frequency reflections in the full waveform inversion function. The system and method then generate the velocity model based on the solution to the velocity model equation, and display the velocity model.

Abstract translation: 本文描述了一种系统和方法，用于生成用于海底环境的返回的地震信号的速度模型。 该系统和方法产生一系列源信号，接收相应的一组直接信号，反射信号和折射信号，使用相对于接收的直接信号组，反射信号的全波形反转函数求解速度模型方程， 折射信号以通过放宽对全波形反转功能中的低频反射的依赖性来最小化最小二乘失配函数。 然后，系统和方法基于速度模型方程的解，生成速度模型，并显示速度模型。

公开(公告)号：US20130208564A1

公开(公告)日：2013-08-15

申请号：US13764918

申请日：2013-02-12

Applicant: CGGVERITAS SERVICES SA

Inventor： Yuan NI ,  Behzad VAHIDA

IPC: G01V1/38

CPC classification number: G01V1/3826 ,  G01V1/3808 ,  Y02A90/36

Abstract: A method and a catenary seismic source steering gear for towing seismic sources underwater. The catenary gear includes plural seismic sources configured to generate seismic waves underwater; a main rope configured to span between first and second vessels; and a connecting system configured to connect the plural seismic sources to the main rope. The main rope takes a substantially catenary shape when towed by the first and second vessels underwater.

Abstract translation: 一种用于在水下拖动地震源的方法和悬链地震源舵机。 悬链齿轮包括被配置为在水下产生地震波的多个地震源; 构造成跨越第一和第二容器之间的主绳; 以及连接系统，其构造成将所述多个地震源连接到所述主绳索。 当第一和第二船在水下拖曳时，主绳子基本上是悬链状。