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1. 发明申请

US20190033479A1 MEMORY EFFICIENT Q-RTM COMPUTER METHOD AND APPARATUS FOR IMAGING SEISMIC DATA 审中-公开
公开(公告)号：US20190033479A1
公开(公告)日：2019-01-31
申请号：US15658847
申请日：2017-07-25
申请人： ADVANCED GEOPHYSICAL TECHNOLOGY INC.
发明人： Wenyi HU
IPC分类号： G01V1/34 , G01V1/28 , G01V1/32
CPC分类号： G01V1/345 , G01V1/282 , G01V1/32 , G01V2210/679 , G01V2210/74
摘要： A memory-efficient Q-RTM computer method and apparatus for imaging seismic data is described. A seismic image may be formed from a memory-efficient Q-RTM module utilizing received attenuated seismic data. Seismic data is processed by the memory-efficient Q-RTM module to compensate for amplitude attenuation and phase velocity dispersion simultaneously during back-propagation in RTM. A negative quality factor, Q, is obtained by modifying the wave equation to compensate for amplitude attenuation. One or more dispersion optimization terms introduced to a wave equation for compensation of Q effects on the phase, solved by a finite difference algorithm, compensate for phase velocity change and further adjust amplitude attenuation compensation.

2. 发明授权

US10073183B2 Methods and systems that attenuate noise in seismic data 有权
公开(公告)号：US10073183B2
公开(公告)日：2018-09-11
申请号：US14820415
申请日：2015-08-06
申请人： PGS Geophysical AS
发明人： Stian Hegna
IPC分类号： G01V1/36 , G01V1/32 , G01V1/38
CPC分类号： G01V1/36 , G01V1/32 , G01V1/325 , G01V1/38 , G01V2210/242 , G01V2210/32 , G01V2210/34 , G01V2210/43 , G01V2210/44
摘要： Methods and systems that attenuate noise in seismic data. In one aspect, noise attenuation methods iteratively generate a low-speed noise model of low-speed noise recorded in the seismic data. The seismic data is arranged into a sparse seismic-data matrix. Low-speed noise refers to noise that propagates at speeds less the speed of sound in water. The low-speed noise model includes the low-speed noise and includes interpolated low-speed noise that approximates portions of the low-speed noise typically affected by spatial aliasing and streamer surface irregularities. The low-speed noise model may be subtracted from the sparse seismic-data matrix to obtain a noise-attenuated sparse seismic-data matrix.

3. 发明申请

US20180136353A1 USE OF WAVELET CROSS-CORRELATION FOR VIRTUAL SOURCE DENOISING 审中-公开
公开(公告)号：US20180136353A1
公开(公告)日：2018-05-17
申请号：US15809744
申请日：2017-11-10
申请人： Saudi Arabian Oil Company
发明人： Yang Zhao , Weichang Li
IPC分类号： G01V1/36 , G01V1/32
CPC分类号： G01V1/366 , G01V1/28 , G01V1/32 , G01V1/36 , G01V2210/23 , G01V2210/242 , G01V2210/25 , G01V2210/26 , G01V2210/44 , G01V2210/48 , G01V2210/57
摘要： Seismic shot gather data is received from a computer data store for processing. The received seismic shot gather data is separated into downgoing and upgoing wavefields, a time-frequency-wavenumber (t-f-k) three-dimensional (3D) data cube comprising multiple time-frequency (t-f) slices is formed. The downgoing wavefields are wavelet transformed from a time (t) domain to a t-f domain and the upgoing wavefields are wavelet transformed from the t domain to the t-f domain. A wavelet cross-correlation is performed between the downgoing wavefields in the t-f domain and the upgoing wavefields in a t-f-k domain to generate wavelet cross-correlated data. Soft-threshold filtering if performed for each t-f slice of the t-f-k 3D data cube. An inverse wavelet transform is performed to bring wavelet cross-correlated data from the t-f-k domain to a time-receiver (t-x) domain. All seismic shots of the received seismic shot gather data are looped over and the wavelet cross-correlated data is stacked as a virtual source gather.

4. 发明申请

US20180136350A1 METHOD AND SYSTEM FOR THE MULTIMODAL AND MULTISCALE ANALYSIS OF GEOPHYSICAL DATA BY TRANSFORMATION INTO MUSICAL ATTRIBUTES 审中-公开
公开(公告)号：US20180136350A1
公开(公告)日：2018-05-17
申请号：US15564268
申请日：2016-04-06
申请人： ENI S.p.A.
发明人： Paolo DELL'AVERSANA , Gianluca GABBRIELLINI , Alfonso AMENDOLA
IPC分类号： G01V1/30 , G01V1/34 , G01V1/32
CPC分类号： G01V1/30 , G01V1/32 , G01V1/34 , G01V1/345
摘要： A multimodal and multi-scale analysis method of geophysical data is described. The method includes the steps of: acquisition of a plurality of geophysical and/or seismic data or signals extracted from a predefined geological context; recording the data or signals in a digital format on a vector; transformation or conversion of the data or signals into corresponding digital images; transformation or conversion of the data or signals into corresponding sound data available in standard digital musical formats and processing the data or signals in relation to the time and relative frequency content; creation of sound attributes suitable for identifying and characterizing specific geo-musical anomalies, starting from the sound data; and effecting an audio-video comparative analysis, so as to associate, with one or more digital images of a certain geophysical signal, one or more of the sound data associated with the digital images.

5. 发明申请

US20170168179A1 RESONANCE-BASED INVERSION OF ACOUSTIC IMPEDANCE OF ANNULUS BEHIND CASING 审中-公开
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.

6. 发明授权

US09354337B2 System, machine, and computer-readable storage medium for forming an enhanced seismic trace using a virtual seismic array 有权
标题翻译：系统，机器和计算机可读存储介质，用于使用虚拟地震阵列形成增强的地震迹线
公开(公告)号：US09354337B2
公开(公告)日：2016-05-31
申请号：US13225067
申请日：2011-09-02
申请人： Ibrahim Abdulaziz Alhukail , Luc Ikelle
发明人： Ibrahim Abdulaziz Alhukail , Luc Ikelle
IPC分类号： G01V1/28
CPC分类号： G01V1/28 , G01V1/32 , G01V2210/55 , G01V2210/57
摘要： Embodiments of a system are provided for forming enhanced seismic array traces using virtual seismic sensors in addition to the real seismic sensors to form a virtual seismic array. The system receives the signal responses from the real sensors, processes the signal responses from the sensors to define virtual signals using a narrowband decomposition of the complex envelope of the sensor signal responses, calculates second- and fourth-order statistics to derive steering vectors for the array of real sensors, and forms a virtual seismic array in response thereto. Machines, computer program product, and computer-implemented methods are provided for forming enhanced seismic array traces by receiving the array responses from sensors, processing the signals to define virtual sensor signals and a virtual seismic array, and forming an array response for the virtual seismic array to form a seismic trace of enhanced resolution.
摘要翻译：提供了一种系统的实施例，用于除了真实的地震传感器之外，还使用虚拟地震传感器形成增强的地震阵列迹线，以形成虚拟地震阵列。该系统接收来自真实传感器的信号响应，处理来自传感器的信号响应以使用传感器信号响应的复包络的窄带分解来定义虚拟信号，计算二阶和四阶统计量以导出用于真实传感器阵列，并响应于此形成虚拟地震阵列。提供了机器，计算机程序产品和计算机实现的方法，用于通过接收来自传感器的阵列响应来形成增强的地震阵列迹线，处理信号以定义虚拟传感器信号和虚拟地震阵列，以及为虚拟地震形成阵列响应阵列形成增强分辨率的地震迹线。

7. 发明申请

US20160109594A1 METHODS AND SYSTEMS THAT ATTENUATE NOISE IN SEISMIC DATA 审中-公开
标题翻译：地震数据中噪声的方法和系统
公开(公告)号：US20160109594A1
公开(公告)日：2016-04-21
申请号：US14820415
申请日：2015-08-06
申请人： PGS Geophysical AS
发明人： Stian Hegna
IPC分类号： G01V1/36 , G01V1/32 , G01V1/28
CPC分类号： G01V1/36 , G01V1/32 , G01V1/325 , G01V1/38 , G01V2210/242 , G01V2210/32 , G01V2210/34 , G01V2210/43 , G01V2210/44
摘要： Methods and systems that attenuate noise in seismic data. In one aspect, noise attenuation methods iteratively generate a low-speed noise model of low-speed noise recorded in the seismic data. The seismic data is arranged into a sparse seismic-data matrix. Low-speed noise refers to noise that propagates at speeds less the speed of sound in water. The low-speed noise model includes the low-speed noise and includes interpolated low-speed noise that approximates portions of the low-speed noise typically affected by spatial aliasing and streamer surface irregularities. The low-speed noise model may be subtracted from the sparse seismic-data matrix to obtain a noise-attenuated sparse seismic-data matrix.
摘要翻译：衰减地震数据噪声的方法和系统。在一个方面，噪声衰减方法迭代地产生记录在地震数据中的低速噪声的低速噪声模型。地震数据被布置成稀疏的地震数据矩阵。低速噪音是指以较低声速在水中传播的噪音。低速噪声模型包括低速噪声，并且包括内插的低速噪声，其近似通常受空间混叠和流光表面不规则影响的低速噪声的部分。可以从稀疏地震数据矩阵中减去低速噪声模型，以获得噪声衰减的稀疏地震数据矩阵。

8. 发明申请

US20150316673A1 Systems and Methods for 3D Seismic Data Depth Conversion Utilizing Artificial Neural Networks 审中-公开
标题翻译：使用人工神经网络的3D地震数据深度转换的系统和方法
公开(公告)号：US20150316673A1
公开(公告)日：2015-11-05
申请号：US14646836
申请日：2012-12-05
申请人： Jacky M. WIENER , Michael John EBERHARD , Stewart Arthur LEVIN , LANDMARK GRAPHICS CORPORATION
发明人： Jacky Muri Wiener , Michael John Eberhard , Stewart Arthur Levin
IPC分类号： G01V1/32 , G06N3/08 , G01V1/28
CPC分类号： G01V1/32 , G01V1/282 , G01V1/302 , G01V2210/48 , G01V2210/64 , G01V2210/66 , G06N3/08
摘要： Systems and methods for the conversion of stacked, or preferably, time migrated 3D seismic data and associated seismic attributes from a time domain to a depth domain.
摘要翻译：用于将时间偏移的3D地震数据和相关联的地震属性从时域转换成深度域的系统和方法。

9. 发明授权

US09008972B2 Method for seismic interpretation using seismic texture attributes 有权
标题翻译：使用地震纹理属性进行地震解释的方法
公开(公告)号：US09008972B2
公开(公告)日：2015-04-14
申请号：US13378018
申请日：2010-05-04
申请人： Matthias Imhof , Peng Xu
发明人： Matthias Imhof , Peng Xu
IPC分类号： G01V1/28 , G06K9/00 , G01V1/32
CPC分类号： G06K9/00536 , G01V1/302 , G01V1/307 , G01V1/32 , G01V2210/43 , G01V2210/44 , G01V2210/63
摘要： Method for generating a new family of seismic attributes sensitive to seismic texture that can be used for classification and grouping of seismic data into seismically similar regions. A 2D or 3D data analysis window size is selected (23), and for each of multiple positions (25) of the analysis window in the seismic data volume, the data within the window are transformed to a wavenumber domain spectrum (26). At least one attribute of the seismic data is then defined based on one or more spectral properties, and the attribute is computed (28) for each window, generating a multidimensional spectral attribute data volume (29). The attribute data volume can be used for inferring hydrocarbon potential, preferably after classifying the data volume cells based on the computed attribute, partitioning the cells into regions based on the classification, and prioritizing of the regions within a classification.
摘要翻译：用于生成对地震纹理敏感的新的地震属性系列的方法，可用于将地震数据分类和分组到地震相似区域。选择2D或3D数据分析窗口大小（23），并且对于地震数据卷中分析窗口的多个位置（25）中的每一个，将窗口内的数据转换为波数域频谱（26）。然后基于一个或多个光谱属性来定义地震数据的至少一个属性，并且为每个窗口计算（28）属性，生成多维光谱属性数据卷（29）。属性数据量可以用于推断碳氢化合物的潜力，最好是根据计算出的属性对数据体积单元进行分类，根据分类将单元细分成多个区域，以及分类中区域的优先级。

10. 发明授权

US08908926B2 Method of 3D object delineation from 3D seismic data 有权
标题翻译： 3D地震数据3D对象划分方法
公开(公告)号：US08908926B2
公开(公告)日：2014-12-09
申请号：US13478317
申请日：2012-05-23
申请人： Jonathan Henderson , Steve Purves , James Lowell , Dale Norton
发明人： Jonathan Henderson , Steve Purves , James Lowell , Dale Norton
IPC分类号： G06K9/00 , G01V1/32 , G06T7/00
CPC分类号： G06K9/00624 , G01V1/32 , G06T7/12 , G06T2207/20116 , G06T2207/20161
摘要： A method of 3D object delineation from 3D seismic data comprising the steps of, providing 3D seismic data; processing the data based on at least one characteristic whereby said characteristic is extracted from the data and compared with at least one reference characteristic and delineated based on the comparison, and defining a geological element based on the delineation. The characteristics may be adjusted. Data can be processed based on one characteristic then processed based on a second characteristic or data is processed based on two characteristics substantially simultaneously. Data may be processed n times producing n delineations from which the geological element is defined. An algorithm is provided for processing the data which may shift an evolving shape description of an object between explicit and implicit representations, where each shift applies a transformation to the object. Multiple sources of data may be utilized simultaneously to drive the delineation process.
摘要翻译：一种从3D地震数据中描绘3D对象的方法，包括以下步骤：提供3D地震数据; 基于至少一个特征处理数据，从而从数据中提取所述特征，并与至少一个参考特征进行比较，并基于比较进行描绘，并基于描述定义地质要素。可以调整特性。可以基于随后基于第二特征处理的一个特征来处理数据，或者基于两个特征基本上同时地处理数据。数据可以处理n次，产生定义地质元素的n个描绘。提供了一种用于处理数据的算法，其可以在显式和隐含表示之间移动对象的演进形状描述，其中每个移位对对象应用变换。可以同时利用多个数据来驱动描绘过程。

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