公开(公告)号：US20170160413A1

公开(公告)日：2017-06-08

申请号：US15366240

申请日：2016-12-01

申请人： CGG SERVICES SAS

发明人： Jonathan DOWNTON

IPC分类号： G01V1/30

CPC分类号： G01V1/307 ,  G01V1/306 ,  G01V2210/586 ,  G01V2210/632 ,  G01V2210/646 ,  G01V2210/677

摘要： Fracture orientation ambiguity in the results of amplitude variation with offset and azimuth inversion is overcome by using additional geological information. Methods, apparatus and executable codes stored on non-transitory media cause, for each interface encountered by traces in a CMP gather, calculating angle-dependent azimuthal Fourier coefficients, performing a nonlinear inversion of amplitude versus offset and azimuth, AVOAz, equations built using the angle-dependent azimuthal Fourier coefficients to determine possible fracture orientations, and selecting one of the possible fracture orientations using constraints based on the additional geological information.

公开(公告)号：US20130235694A1

公开(公告)日：2013-09-12

申请号：US13756119

申请日：2013-01-31

申请人： COLORADO SCHOOL OF MINES

发明人： Thomas Leonard Davis ,  Halina Jedrzejowska-Tyczkowska ,  Krystyna Zukowska ,  Irena Irlik

IPC分类号： G01V1/40

CPC分类号： G01V1/40 ,  G01V1/30 ,  G01V2210/50 ,  G01V2210/58 ,  G01V2210/677

摘要： Systems and methods for geological medium exploration are provided herein. A method of geological medium exploration may include generating vibrations in a geological medium and recording wave-fields at a surface and in a borehole. Additionally, the method may include obtaining a wave field modification operator and applying the wave-field operator to a full range of seismic data to achieve a spectrally-modified wave field.

摘要翻译： 本文提供了地质介质勘探的系统和方法。 地质介质勘探方法可能包括在地质介质中产生振动，并记录表面和钻孔中的波场。 此外，该方法可以包括获得波场修改算子并将波场算子应用于全范围的地震数据以实现频谱修正的波场。

公开(公告)号：US20100042391A1

公开(公告)日：2010-02-18

申请号：US12436400

申请日：2009-05-06

申请人： Changsoo SHIN

发明人： Changsoo SHIN

IPC分类号： G06G7/48

CPC分类号： G01V1/282 ,  G01V1/303 ,  G01V2210/43 ,  G01V2210/614 ,  G01V2210/677

摘要： Disclosed are an apparatus and method for visualizing subsurface velocity structure by processing signals through waveform inversion in the Laplace-Fourier domain, and a recording medium storing a program for implementing the method. A receiver receives a seismic signal from a target region, and a signal processor processes the seismic signal to generate image data for visualizing the subsurface structure of the target region. The signal processor performs the waveform inversion in the Laplace-Fourier domain, thereby obtaining a velocity model similar to an true structure of the target region.

摘要翻译： 公开了一种通过在拉普拉夫傅立叶域中通过波形反转处理信号来可视化地下速度结构的装置和方法，以及存储用于实现该方法的程序的记录介质。 接收机从目标区域接收地震信号，并且信号处理器处理地震信号以产生用于使目标区域的地下结构可视化的图像数据。 信号处理器在拉普拉维傅立叶域中执行波形反转，从而获得与目标区域的真实结构相似的速度模型。

公开(公告)号：US11703607B2

公开(公告)日：2023-07-18

申请号：US16901914

申请日：2020-06-15

申请人： Saudi Arabian Oil Company

发明人： Simon Cordery

IPC分类号： G01V1/30 ,  G01V1/36

CPC分类号： G01V1/306 ,  G01V1/368 ,  G01V2210/161 ,  G01V2210/677

摘要： A method or system is configured for determining a seismic attenuation quality factor Q for intervals of subsurface formations by performing actions including receiving vertical seismic profile traces. The actions include filtering the vertical seismic profile traces with an inverse impulse response of a downhole receiver. The actions include transforming the vertical seismic profile data from the particle motion measured by the downhole receiver to the far-field particle motions represented by the source wavelet. The actions include determining a ratio of the spectral amplitudes of the direct arrival event of the transformed vertical seismic profile data and the source Klauder wavelet. A quality factor Q is generated representing an attenuation of the seismic signal between the source at ground level surface and the downhole receiver.

公开(公告)号：US20170168179A1

公开(公告)日：2017-06-15

申请号：US15335797

申请日：2016-10-27

申请人： Schlumberger Technology Corporation

发明人： Mikhail Lemarenko ,  Christoph Klieber ,  Sylvain Thierry ,  Sandip Bose ,  Smaine Zeroug

IPC分类号： G01V1/30 ,  G01V1/28 ,  G01V1/32

CPC分类号： G01V1/306 ,  E21B47/0005 ,  E21B47/082 ,  G01V1/282 ,  G01V1/32 ,  G01V1/50 ,  G01V2210/6224 ,  G01V2210/6226 ,  G01V2210/677

摘要： Techniques involve obtaining acoustic data from an acoustic logging tool, where the acoustic data includes waves reflected from the casing, the annular fill material, the formation, and/or interfaces between any of the casing, the annular fill material, one or more interfaces between any of the mud, the casing, and the annular fill material. Techniques include normalizing the acoustic wave to result in a normalized wave having a comparable spectral shape with a reference wave, and comparing the normalized wave with the reference wave. The reference wave may be generated or modeled or produced from a look-up table or database, and may be estimated based on initial estimates of wellbore parameters. Based on the comparison of the normalized wave with the reference wave, a best-fit reference wave substantially matching the normalized wave may be identified. The best-fit reference wave may correspond with a thickness of the casing, an acoustic impedance of the annular fill material, and an acoustic impedance of mud.

公开(公告)号：US20170097432A1

公开(公告)日：2017-04-06

申请号：US15276961

申请日：2016-09-27

申请人： CGG SERVICES SA

发明人： Gordon POOLE

IPC分类号： G01V1/36 ,  G01V1/28

CPC分类号： G01V1/36 ,  G01V1/282 ,  G01V1/325 ,  G01V1/368 ,  G01V1/38 ,  G01V2210/1293 ,  G01V2210/1423 ,  G01V2210/244 ,  G01V2210/32 ,  G01V2210/43 ,  G01V2210/46 ,  G01V2210/47 ,  G01V2210/512 ,  G01V2210/56 ,  G01V2210/677 ,  G01V2210/679 ,  G01V2210/74

摘要： Computing device, computer instructions and method for up-down separation of seismic data. The method includes receiving the seismic data, which includes hydrophone data and particle motion data; performing a first up-down separation, which is independent of a ghost model, using as input the hydrophone data and the particle motion data, to obtain first up-down separated data; performing a second up-down separation by using as input a combination of (i) the hydrophone data and/or the particle motion data and (ii) the first up-down separated data, wherein an output of the second up-down separation is second up-down separated data; and generating an image of the subsurface based on the second up-down separated data.

公开(公告)号：US20150168573A1

公开(公告)日：2015-06-18

申请号：US14394100

申请日：2012-12-11

申请人： CHINA NATIONAL PETROLEUM CORPORATION ,  BGP INC., CHINA NATIONAL PETROLEUM CORPORATION

发明人： Gulan Zhang ,  Ximing Wang ,  Qinghong Zhang ,  Yanpeng Li ,  Jixin Peng ,  Yufeng Zhao ,  Jiaojun Rong ,  Keen Li ,  Qihu Jin ,  Xiaoling Guo

IPC分类号： G01V1/30

CPC分类号： G01V1/30 ,  G01V1/307 ,  G01V1/42 ,  G01V2200/14 ,  G01V2210/60 ,  G01V2210/63 ,  G01V2210/677

摘要： Provided is a method for performing layer Q factor inversion by using an amplitude spectrum attribute of a down going wave of vertical seismic profile data in a geophysical exploration data processing technology. In the method, first an F-K (frequency-wave number) method is used to perform wave field separation on VSP original data, so as to obtain a down going wave; a down going wavelet and a monitoring wavelet are selected to undergone Fourier transform to obtain an amplitude spectrum, polynomial fitting is performed on the amplitude spectrum to obtain an equivalent Q, and a formula between the equivalent Q and a layer Q is used to perform inversion, so as to obtain the layer Q. The method has a strong capability of resisting random disturbance, and is capable of removing a difference of triggering wavelet. The algorithm is simple and can greatly save workload; moreover, the layer Q value obtained through inversion has a desirable stability and high precision.

摘要翻译： 提供了一种通过使用地球物理勘探数据处理技术中的垂直地震剖面数据的下行波的振幅谱属性来执行层Q因子反演的方法。 在该方法中，首先使用F-K（频波数）方法对VSP原始数据进行波场分离，以获得下行波; 选择向下小波和监视小波进行傅里叶变换以获得振幅谱，对幅度谱进行多项式拟合以获得等效Q，并且使用等效Q和层Q之间的公式进行反演 ，以获得层Q.该方法具有很强的抵抗随机扰动的能力，能够消除触发小波的差异。 算法简单，可以大大节省工作量; 此外，通过反转获得的层Q值具有期望的稳定性和高精度。

公开(公告)号：US08386218B2

公开(公告)日：2013-02-26

申请号：US12436400

申请日：2009-05-06

申请人： Changsoo Shin

发明人： Changsoo Shin

IPC分类号： G06G7/48

CPC分类号： G01V1/282 ,  G01V1/303 ,  G01V2210/43 ,  G01V2210/614 ,  G01V2210/677

摘要： Disclosed are an apparatus and method for visualizing subsurface velocity structure by processing signals through waveform inversion in the Laplace-Fourier domain, and a recording medium storing a program for implementing the method. A receiver receives a seismic signal from a target region, and a signal processor processes the seismic signal to generate image data for visualizing the subsurface structure of the target region. The signal processor performs the waveform inversion in the Laplace-Fourier domain, thereby obtaining a velocity model similar to an true structure of the target region.

摘要翻译： 公开了一种通过在拉普拉夫傅立叶域中通过波形反转处理信号来可视化地下速度结构的装置和方法，以及存储用于实现该方法的程序的记录介质。 接收机从目标区域接收地震信号，并且信号处理器处理地震信号以产生用于使目标区域的地下结构可视化的图像数据。 信号处理器在拉普拉维傅立叶域中执行波形反转，从而获得与目标区域的真实结构相似的速度模型。

公开(公告)号：US20240069226A1

公开(公告)日：2024-02-29

申请号：US17396603

申请日：2021-08-06

申请人： China University of Mining and Technology (Beijing)

发明人： Suzhen SHI ,  Mingxuan LI

IPC分类号： G01V1/28 ,  G01V1/30

CPC分类号： G01V1/282 ,  G01V1/303 ,  G01V2210/675 ,  G01V2210/677

摘要： A method for automatically picking up seismic velocity based on depth learning is disclosed. The method includes obtaining a seismic data and labels, and inputting the seismic data and the labels into a pre-trained depth learning model to obtain a velocity pick-up result. A structure of the depth learning model includes a residual network composed of three residual blocks. And after the residual network, a long-short term memory network and a full connection layer are further added. Each of the residual blocks is composed of three convolutional layers. An activation function between each residual block and each convolutional layer of the residual block is a Relu function. An activation function between the long-short term memory network and the full connection layer is a Relu function. The method for automatically picking up seismic velocity based on depth learning provided by the disclosure effectively improves the efficiency of seismic velocity pick-up.

公开(公告)号：US11892583B2

公开(公告)日：2024-02-06

申请号：US16924359

申请日：2020-07-09

申请人： Abu Dhabi National Oil Company

发明人： Guillaume Cambois

IPC分类号： G01V1/00 ,  G01V1/36

CPC分类号： G01V1/368 ,  G01V2210/1425 ,  G01V2210/51 ,  G01V2210/677

摘要： A method for applying separated wave-field imaging onshore (1) by artificially creating up-going and down-going fields and (2) by using these fields in a migration algorithm. If there are any surface multiples in the data, the resulting image created using the migration algorithm will be distorted by the unknown free-surface reflection coefficient. In fact, the surface multiples may be generated with a complex series of reflection coefficients. The distortions found in the resulting image created using the migration algorithm are then removed.