公开(公告)号：EP3400464A1

公开(公告)日：2018-11-14

申请号：EP16884198.9

申请日：2016-12-21

申请人： Services Pétroliers Schlumberger ,  Geoquest Systems B.V.

发明人： BEASLEY, Craig J. ,  MOORE, Ian ,  FLETCHER, Robin ,  CASTELLANOS LOPEZ, Clara

IPC分类号： G01V1/28 ,  G01V1/30 ,  G01V1/38

CPC分类号： G01V1/364 ,  G01V1/36 ,  G01V1/3808 ,  G01V2210/32 ,  G01V2210/56 ,  G01V2210/57

摘要： Various implementations described herein are directed to methods for processing seismic data including enhancing seismic data generated by a seismic sensor. The methods may include receiving seismic data that had been acquired using the seismic sensor. The seismic data may include one or more first seismic data elements related to a first seismic event. The methods may include generating summands of the seismic data as an inner product of multiple seismic data elements associated with the first seismic data elements and one or more second seismic data elements. The second seismic data elements may be different than the first seismic data elements. The methods may further include enhancing the seismic data by estimating outliers in the summands of the inner product and replacing the outliers with interpolated values.

公开(公告)号：EP2703848A3

公开(公告)日：2018-03-28

申请号：EP13182367.6

申请日：2013-08-30

申请人： CGG Services SA

发明人： Winnett, Richard

IPC分类号： G01V1/36 ,  G01V1/38

CPC分类号： G01V1/28 ,  G01V1/364 ,  G01V1/38 ,  G01V1/3808 ,  G01V2210/123 ,  G01V2210/1293 ,  G01V2210/52 ,  G01V2210/53 ,  G01V2210/56 ,  G01V2210/614

摘要： A method for de-ghosting marine seismic trace data is described. A reference seismic trace and a candidate seismic trace are selected from acquired seismic data. The acquired seismic data is gathered using a configuration wherein either a first streamer and a second streamer are disposed at different depths relative to one another and are laterally offset relative to one another, or using a configuration wherein a first source and a second source are disposed at different depths relative to one another and are laterally offset from one another. The reference seismic trace and the candidate seismic trace are processed, e.g., to perform normal moveout correction and/or vertical datum shifting, and the processed reference seismic trace is de-ghosted using the processed, candidate seismic trace.

摘要翻译： 描述了一种用于去重影海洋地震道踪迹数据的方法。 从采集的地震数据中选择参考地震道和候选地震道。 采集的地震数据采用这样的构造来收集，其中第一拖缆和第二拖缆相对于彼此以不同的深度布置并且相对于彼此横向偏移，或者使用其中布置第一源和第二源的配置 在相对于彼此的不同深度处并且彼此横向偏移。 对参考地震道和候选地震道进行处理，例如以执行正常时差校正和/或垂直基准移位，并且使用处理过的候选地震道对处理后的参考地震道进行去鬼影。

公开(公告)号：EP3274742A1

公开(公告)日：2018-01-31

申请号：EP16727240.0

申请日：2016-03-29

申请人： Fugro N.V.

发明人： OGILVIE, Angus James Stephen

IPC分类号： G01V1/38 ,  G01V1/387

CPC分类号： G01V1/3861 ,  G01V1/3808 ,  G01V1/387 ,  G01V2210/56

摘要： A marine seismic data acquisition system, comprising: a seismic source arrangement comprising: a first seismic source adapted to be towed at a first predetermined depth and a second seismic source adapted to be towed at a second predetermined depth, which is deeper than the first predetermined depth, wherein, in use, the first seismic source transmits pulses, each pulse comprising an upwardly-travelling pressure wavefield, which is reflected at the sea/air interface to become a downwardly-travelling ghost pressure wavefield, and a downwardly-travelling primary pressure wavefield, and the second seismic source transmits pulses, each pulse comprising an upwardly-travelling pressure wavefield, which is reflected at the sea/air interface to become a downwardly-travelling ghost pressure wavefield, and a downwardly-travelling primary pressure wavefield, and wherein the first predetermined depth and the magnitude of the peak pressure of the upwardly-travelling pressure wavefield produced by the first seismic source are selected to create an anelastic region at the sea surface having a reflection coefficient of between −0.45 and 0, the system further comprising a receiver for receiving the pulses transmitted from the seismic source arrangement and for extracting data from within a predetermined frequency band of interest.

公开(公告)号：EP3105619A4

公开(公告)日：2018-01-10

申请号：EP15746620

申请日：2015-02-10

申请人： SCHLUMBERGER TECH B V (STBV)

发明人： OZDEMIR AHMET KEMAL ,  KJELLESVIG BENT ANDREAS

IPC分类号： G01V1/36 ,  G01V1/38

CPC分类号： G01V1/36 ,  G01V1/38 ,  G01V1/3808 ,  G01V2200/14 ,  G01V2210/21 ,  G01V2210/24 ,  G01V2210/32 ,  G01V2210/56 ,  G01V2210/57

摘要： Various implementations directed to quality control and preconditioning of seismic data are provided. In one implementation, a method may include receiving particle motion data from particle motion sensors disposed on seismic streamers. The method may also include performing quality control (QC) processing on the particle motion data. The method may further include performing preconditioning processing on the QC-processed particle motion data. The method may additionally include attenuating noise in the preconditioning-processed particle motion data.

公开(公告)号：EP2755057A3

公开(公告)日：2017-12-20

申请号：EP14150941.4

申请日：2014-01-13

申请人： CGG Services SA

发明人： Wu, Xiang

IPC分类号： G01V1/36

CPC分类号： G01V1/364 ,  G01V1/36 ,  G01V2210/56

摘要： Methods and systems for separating multiple events from primary events in noisy seismic data are described. Multiples are predicted and then the predictions are improved by least-square matching filtering in the space and time domain. An adaptive curvelet domain separation (ACDS) is then performed and the ACDS equation is solved with an iterative soft-thresholding technique. Further processing can be added to compensate for prediction inaccuracy or variable/excessive seismic data noise by dividing the seismic data into predetermined bands and processing each band independently.

摘要翻译： 描述了用于从噪声地震数据中的主要事件分离多个事件的方法和系统。 预测多个，然后通过空间和时间域中的最小二乘匹配滤波来改进预测。 然后执行自适应曲波域分离（ACDS），并使用迭代软阈值技术来求解ACDS方程。 通过将地震数据分成预定的频带并独立处理每个频带，可以进一步处理以补偿预测不准确或可变/过度的地震数据噪声。

公开(公告)号：EP3245542A1

公开(公告)日：2017-11-22

申请号：EP16702270.6

申请日：2016-01-13

申请人： BP Corporation North America Inc.

发明人： MOSELEY, Benjamin

IPC分类号： G01V1/36

CPC分类号： G01V1/364 ,  G01V1/38 ,  G01V2210/514 ,  G01V2210/56 ,  G01V2210/60

摘要： A method for use in improving marine seismic data quality includes: designing a filter for suppressing the effect of a ghost reflection in a set of stacked, marine seismic data representative of a subterranean formation, the filter compensating for amplitude due to the presence of the ghost reflection separately from the phase due to the presence of the ghost reflection; and applying the filter to the seismic data to suppress the effect of ghost reflection. The designing includes: iteratively defining at least one parameter of the filter and applying the defined filter to the seismic data; evaluating each iteration of the filters application to at least a subset of the seismic data; and selecting a defined filter from one of the evaluated iterations.

公开(公告)号：EP2646849A4

公开(公告)日：2017-10-18

申请号：EP11845130

申请日：2011-10-13

申请人： EXXONMOBIL UPSTREAM RES CO

发明人： VAN GROENESTIJIN GERT-JAN A ,  ROSS WARREN S

IPC分类号： G01V1/38 ,  G01V1/36

CPC分类号： G01V1/368 ,  G01V1/364 ,  G01V1/38 ,  G01V2210/56 ,  G01V2210/614 ,  G01V2210/67

公开(公告)号：EP3014307A4

公开(公告)日：2017-04-05

申请号：EP14817192

申请日：2014-06-19

申请人： WESTERNGECO LLC ,  WESTERNGECO SEISMIC HOLDINGS LTD

发明人： KAMIL YOUSIF IZZELDIN ,  YADARI NIZARE EL ,  VASSALLO MASSIMILIANO

IPC分类号： G01V1/28 ,  E21B49/00 ,  G01V1/30 ,  G01V1/48 ,  G01V1/50

CPC分类号： G01V1/364 ,  G01V1/282 ,  G01V1/3808 ,  G01V2210/56

摘要： A method can include receiving measured values that include representations of constructive interference and destructive interference from an upgoing wavefield and a downgoing ghost wavefield reflected from a sea surface; and estimating at least one of the wavefields with attenuated noise.

公开(公告)号：EP3136130A1

公开(公告)日：2017-03-01

申请号：EP16186619.9

申请日：2016-08-31

申请人： PGS Geophysical AS

发明人： Lu, Shaoping ,  Whitmore, Jr., Norman Daniel ,  Mavilio, Alejandro Antonio Valenciano ,  Chemingui, Nizar

IPC分类号： G01V1/36 ,  G01V1/38

CPC分类号： G01V1/36 ,  G01V1/32 ,  G01V1/364 ,  G01V1/38 ,  G01V2210/1423 ,  G01V2210/144 ,  G01V2210/24 ,  G01V2210/44 ,  G01V2210/45 ,  G01V2210/56 ,  G01V2210/57

摘要： Methods and systems of generating seismic images from primaries and multiples are described. Methods separate pressure data into up-going pressure data and down-going pressure data from pressure data and vertical velocity data. Irregularly spaced receiver coordinates of the down-going and up-going pressure data are regularized to grid points of a migration grid and interpolation is used to fill in down-going and up-going pressure data at grid points of the migration grid. A seismic image is calculated at grid points of the migration grid based on the interpolated and regularized down-going pressure data and the interpolated and regularized up-going pressure data. The seismic images are high-resolution, have lower signal-to-noise ratio than seismic images generated by other methods, and have reduced acquisition artifacts and crosstalk effects.

摘要翻译： 描述了从原始和倍数生成地震图像的方法和系统。 方法将压力数据从压力数据和垂直速度数据分离成上升压力数据和下行压力数据。 下行和上行压力数据的不规则间隔的接收器坐标正规化到移动网格的网格点，并且内插用于填充移动网格的网格点处的下行和上行的压力数据。 基于内插和正则化的下行压力数据和插值和正则化的上行压力数据，在移动网格的网格点计算地震图像。 地震图像是高分辨率的，具有比其他方法产生的地震图像更低的信噪比，并且减少了采集伪影和串扰效应。

公开(公告)号：EP3134753A1

公开(公告)日：2017-03-01

申请号：EP15783761.8

申请日：2015-04-22

申请人： Schlumberger Technology B.V.

发明人： YARMAN, Can Evren ,  FLAGG, Garret

IPC分类号： G01V1/38 ,  G01V1/30 ,  G01V1/20

CPC分类号： G01V1/30 ,  G01V2210/56

摘要： At least one dip is determined using an estimator for the at least one dip based on measured multicomponent survey data. At least one wavefield for the at least one dip is estimated using a processing technique that employs matching pursuit.

摘要翻译： 基于测量的多组分测量数据，使用至少一个浸渍的估计器确定至少一个浸渍。 使用采用匹配追踪的处理技术来估计用于至少一个倾角的至少一个波场。