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1.发明公开
公开(公告)号：EP4381329A1
公开(公告)日：2024-06-12
申请号：EP22758352.3
申请日：2022-08-03
申请人： CHEVRON U.S.A., INC.
IPC分类号： G01V99/00
CPC分类号： G01V2210/66720130101 , G01V20/00
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公开(公告)号：EP2901180A2
公开(公告)日：2015-08-05
申请号：EP13748186.7
申请日：2013-07-30
申请人： Chevron U.S.A. Inc.
发明人： HENNENFENT, Gilles , BOLES, Karl , DANSEREAU, Yves
IPC分类号： G01V1/36
CPC分类号： G01V1/362 , G01V1/325 , G01V2210/322 , G01V2210/324
摘要： A system and method for processing a prestack seismic dataset with at least one smoothly varying (redundant) axis including transposing the prestack seismic dataset, slicing the prestack seismic dataset into depth or time slices with at least one redundant axis, processing the slices, and transposing the slices to create a processed seismic dataset. The redundant axis may be representative of offset, angle, azimuth, or time between time-lapse surveys. The processing may include filtering the slices to attenuate coherent or incoherent noise.
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公开(公告)号：EP2561459B1
公开(公告)日：2018-08-29
申请号：EP11772402.1
申请日：2011-03-25
申请人： Chevron U.S.A. Inc.
发明人： HENNENFENT, Gilles
CPC分类号： G01V1/32 , G01V1/362 , G01V11/00 , G01V2210/322 , G01V2210/40
摘要： Geophysical data representing at least first and second overlapping geophysical spaces may be aggregated. A first set of geophysical data representing the first geophysical space and a second set of geophysical data representing the second geophysical space may be obtained. The second set of geophysical data may be separate and discrete from the first set of geophysical data. The first set of geophysical data may be transformed from a first parametric domain to a third parametric domain, while the second set of geophysical data may be transformed from a second parametric domain to the third parametric domain. The first set of geophysical data may be fused with the second set of geophysical data in the third parametric domain to create a fused set of geophysical data. The fused set of geophysical data may be transformed from the third parametric domain to a fourth parametric domain.
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公开(公告)号：EP2872926A2
公开(公告)日：2015-05-20
申请号：EP13718275.4
申请日：2013-04-11
申请人： Chevron U.S.A. Inc.
IPC分类号： G01V1/36
CPC分类号： G01V1/364 , G01V1/28 , G01V2210/32
摘要： A system and method for attenuating noise in seismic data representative of a subsurface region of interest including receiving the seismic data; transforming the seismic data into a domain wherein the seismic data have a sparse or compressible representation to create transformed seismic data; dividing the domain into windows wherein the windows represent known spatio-temporal locations in the seismic data; determining statistics of the transformed seismic data in each window; determining a filter for each window based on the statistics of the transformed data; applying the filter for each window to the transformed seismic data in each window to create filtered seismic data; and performing an inverse transform of the filtered seismic data to create noise-attenuated seismic data.
摘要翻译： 一种系统和方法，用于衰减代表感兴趣的地下地区的地震数据中的噪声，包括接收地震数据; 将地震数据转换成其中地震数据具有稀疏或可压缩表示以产生经变换的地震数据的域; 将域划分为窗口，其中窗口表示地震数据中的已知时空位置; 确定每个窗口中变换的地震数据的统计; 基于变换数据的统计确定每个窗口的滤波器; 将每个窗口的滤波器应用于每个窗口中的变换的地震数据，以产生滤波的地震数据; 并执行经滤波的地震数据的逆变换以产生噪声衰减的地震数据。
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公开(公告)号：EP2972510A2
公开(公告)日：2016-01-20
申请号：EP14706238.4
申请日：2014-02-11
申请人： Chevron U.S.A. Inc.
发明人： TEGTMEIER-LAST, Sandra , KUSTOWSKI, Bogdan Lukasz , CLARK, Douglas William , HENNENFENT, Gilles , MARTIN, Harry
IPC分类号： G01V1/36
CPC分类号： G01V1/364 , G01V2210/23 , G01V2210/24 , G01V2210/3246 , G01V2210/40 , G01V2210/42
摘要： A system and method for attenuating noise in seismic data representative of a subsurface region of interest including receiving a seismic dataset representative of seismic signal or seismic noise and a seismic dataset representative of seismic signal and noise, transforming them into a domain were they have sparse or compressible representation, comparing the sets of coefficients to identify desirable coefficients in the set of coefficients representing the signal and noise dataset, selecting the desirable coefficients to produce an improved set of coefficients, and inverse transforming the improved set of coefficients to produce a modified seismic dataset. The modified seismic dataset may be noise-attenuated seismic data or may be a noise model that is subtracted from the original data to produce noise-attenuated data.
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公开(公告)号：EP2561459A2
公开(公告)日：2013-02-27
申请号：EP11772402.1
申请日：2011-03-25
申请人： Chevron U.S.A. Inc.
发明人： HENNENFENT, Gilles
CPC分类号： G01V1/32 , G01V1/362 , G01V11/00 , G01V2210/322 , G01V2210/40
摘要： Geophysical data representing at least first and second overlapping geophysical spaces may be aggregated. A first set of geophysical data representing the first geophysical space and a second set of geophysical data representing the second geophysical space may be obtained. The second set of geophysical data may be separate and discrete from the first set of geophysical data. The first set of geophysical data may be transformed from a first parametric domain to a third parametric domain, while the second set of geophysical data may be transformed from a second parametric domain to the third parametric domain. The first set of geophysical data may be fused with the second set of geophysical data in the third parametric domain to create a fused set of geophysical data. The fused set of geophysical data may be transformed from the third parametric domain to a fourth parametric domain.
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公开(公告)号：EP2972511A2
公开(公告)日：2016-01-20
申请号：EP14706240.0
申请日：2014-02-11
申请人： Chevron U.S.A. Inc.
IPC分类号： G01V1/36
CPC分类号： G01V1/364 , G01V2210/23 , G01V2210/24 , G01V2210/324 , G01V2210/3246 , G01V2210/40 , G01V2210/42
摘要： A system and method for isolating signal in seismic data representative of a subsurface region of interest including receiving a seismic dataset representative of seismic signal and seismic noise and a seismic data guide; transforming the seismic dataset and the seismic data guide into a domain wherein the seismic data have a sparse or compressible representation to create a first set and a second set of representative coefficients; comparing the first set of representative coefficients to the second set of representative coefficients to identify and select desirable members of the first set of representative coefficients that are within a defined threshold of the second set of representative coefficients to create an improved first set of representative coefficients; and performing an inverse transform of the improved first set of representative coefficients to generate a modified seismic dataset.
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8.发明公开
公开(公告)号：EP2972509A2
公开(公告)日：2016-01-20
申请号：EP14712441.6
申请日：2014-03-03
申请人： Chevron U.S.A. Inc.
CPC分类号： G01V1/32 , G01V1/308 , G01V2210/48 , G01V2210/612 , G01V2210/6122
摘要： A system and method for determining a 4D difference from 4D seismic data including receiving a baseline seismic dataset and a monitor seismic dataset; identifying a 4D signal present in the monitor seismic dataset to create a 4D monitor dataset and a signal in the baseline seismic dataset which matches the monitor seismic dataset to create a baseline matching signal dataset; differencing the baseline matching signal dataset and the baseline seismic dataset to create a 4D baseline dataset; and differencing the 4D baseline dataset and the 4D monitor dataset to create a 4D difference dataset. In an embodiment, a multi-scale, multi-directional transform is used to identify the 4D signal present in the monitor seismic dataset and the signal in the baseline seismic dataset which matches the monitor seismic dataset.
摘要翻译： 一种用于从4D地震数据确定4D差异的系统和方法，包括接收基线地震数据集和监测地震数据集; 识别存在于监测地震数据集中的4D信号，以创建与监测地震数据集匹配的基线地震数据集中的4D监测数据集和信号，以创建基线匹配信号数据集; 区分基线匹配信号数据集和基线地震数据集，以创建4D基线数据集; 并区分4D基线数据集和4D监测数据集，以创建4D差异数据集。 在一个实施例中，使用多尺度多方向变换来识别存在于监测地震数据集中的4D信号和与监测地震数据集匹配的基线地震数据集中的信号。
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