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公开(公告)号：US09733371B2
公开(公告)日：2017-08-15
申请号：US14322273
申请日：2014-07-02
IPC分类号： G01V1/30
CPC分类号： G01V1/30 , G01V2210/51
摘要： In the present inventive method, individual traces of seismic data are migrated (41) without any assembling of different midpoints or any summing of different offsets, so that post-migration processing or analysis, e.g. trace alignment, may be applied to the individual migrated traces (42) to compensate for any deficiencies among them, before stack and assembly. Thus, the present invention fully separates the steps of migration (41), assembly (43), and stacking (44), which are combined together in traditional migration. Thus, imaging deficiencies can be measured and addressed in the image space before they are obscured by summation. Afterward, summation can proceed to construct the improved final image (45).
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公开(公告)号：US09625593B2
公开(公告)日：2017-04-18
申请号：US13614932
申请日：2012-09-13
申请人： Ramesh Neelamani , Partha S. Routh , Jerome R. Krebs , Anatoly Baumstein , Thomas A. Dickens , Warren S. Ross , Gopalkrishna Palacharla
发明人： Ramesh Neelamani , Partha S. Routh , Jerome R. Krebs , Anatoly Baumstein , Thomas A. Dickens , Warren S. Ross , Gopalkrishna Palacharla
IPC分类号： G01V1/28
CPC分类号： G01V1/28 , G01V2210/32 , G01V2210/40 , G01V2210/51
摘要： The invention includes a method for reducing noise in migration of seismic data, particularly advantageous for imaging by simultaneous encoded source reverse-time migration (SS-RTM). One example embodiment includes the steps of obtaining a plurality of initial subsurface images; decomposing each of the initial subsurface images into components; identifying a set of components comprising one of (i) components having at least one substantially similar characteristic across the plurality of initial subsurface images, and (ii) components having substantially dissimilar characteristics across the plurality of initial subsurface images; and generating an enhanced subsurface image using the identified set of components. For SS-RTM, each of the initial subsurface images is generated by migrating several sources simultaneously using a unique random set of encoding functions. Another embodiment of the invention uses SS-RTM for velocity model building.
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公开(公告)号：US08428925B2
公开(公告)日：2013-04-23
申请号：US13345314
申请日：2012-01-06
申请人： Jerome R. Krebs , John E. Anderson , Ramesh Neelamani , Charlie Jing , David Hinkley , Thomas A. Dickens , Christine E. Krohn , Peter Traynin
发明人： Jerome R. Krebs , John E. Anderson , Ramesh Neelamani , Charlie Jing , David Hinkley , Thomas A. Dickens , Christine E. Krohn , Peter Traynin
IPC分类号： G06G7/48
CPC分类号： G06F17/5009 , G01V1/28 , G01V2210/67
摘要： Method for reducing the time needed to perform geophysical inversion by using simultaneous encoded sources in the simulation steps of the inversion process. The geophysical survey data are prepared by encoding (3) a group of source gathers (1), using for each gather a different encoding signature selected from a set (2) of non-equivalent encoding signatures. Then, the encoded gathers are summed (4) by summing all traces corresponding to the same receiver from each gather, resulting in a simultaneous encoded gather. (Alternatively, the geophysical data are acquired from simultaneously encoded sources.) The simulation steps needed for inversion are then calculated using a particular assumed velocity (or other physical property) model (5) and simultaneously activated encoded sources using the same encoding scheme used on the measured data. The result is an updated physical properties model (6) that may be further updated (7) by additional iterations.
摘要翻译： 用于在反演过程的仿真步骤中通过使用同时编码的源来减少执行地球物理反演所需的时间的方法。 通过编码（3）一组源集合（1）来准备地球物理勘测数据，使用每组收集从非等效编码签名集合（2）中选出的不同编码签名。 然后，通过将来自每个聚集的相同接收器的所有跟踪相加，将编码的聚集相加（4），导致同时编码的聚集。 （或者，从同时编码的源获取地球物理数据。）然后使用特定的假定速度（或其他物理属性）模型（5）计算反演所需的模拟步骤，并使用与之相同的编码方案同时激活编码的源 测量数据。 结果是可以通过附加迭代进一步更新（7）的更新的物理属性模型（6）。
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公开(公告)号：US20130064431A1
公开(公告)日：2013-03-14
申请号：US13640291
申请日：2011-04-22
IPC分类号： G06K9/00
CPC分类号： G01V1/282 , G01V1/301 , G01V1/303 , G01V2210/512 , G01V2210/614 , G01V2210/6222 , G01V2210/632 , G01V2210/679
摘要： Method for efficient computation of wave equation migration angle gathers by using multiple imaging conditions. Common reflection angle or common azimuth gathers or gathers including both common reflection angles and common azimuth angles are produced as the data are migrated. In the course of either wave equation migration or reverse time migration, the pressures and particle motion velocities that need to be computed are sufficient to also compute the Poynting vector pointing in the direction of source-side (35) or receiver-side (37) wavefield propagation. From that, the reflection and azimuth angles can be computed (38). The seismic images can then be stored in the appropriate angle bins, from which common reflection angle or azimuth data volumes can be assembled (39).
摘要翻译： 通过使用多个成像条件，有效计算波动方程偏移角的方法。 当数据迁移时，产生共同的反射角或共同的方位收集或聚集，包括共同的反射角和共同的方位角。 在波动方程迁移或反向时间迁移过程中，需要计算的压力和粒子运动速度足以计算指向源极侧（35）或接收侧（37）方向的坡印亭矢量， 波场传播。 由此可以计算出反射和方位角（38）。 然后可以将地震图像存储在适当的角度仓中，从中可以组装共同的反射角度或方位角数据体积（39）。
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公开(公告)号：US20120109612A1
公开(公告)日：2012-05-03
申请号：US13345314
申请日：2012-01-06
申请人： Jerome R. Krebs , John E. Anderson , Ramesh Neelamani , Charlie Jing , David Hinkley , Thomas A. Dickens , Christine E. Krohn , Peter Traynin
发明人： Jerome R. Krebs , John E. Anderson , Ramesh Neelamani , Charlie Jing , David Hinkley , Thomas A. Dickens , Christine E. Krohn , Peter Traynin
IPC分类号： G06G7/48
CPC分类号： G06F17/5009 , G01V1/28 , G01V2210/67
摘要： Method for reducing the time needed to perform geophysical inversion by using simultaneous encoded sources in the simulation steps of the inversion process. The geophysical survey data are prepared by encoding (3) a group of source gathers (1), using for each gather a different encoding signature selected from a set (2) of non-equivalent encoding signatures. Then, the encoded gathers are summed (4) by summing all traces corresponding to the same receiver from each gather, resulting in a simultaneous encoded gather. (Alternatively, the geophysical data are acquired from simultaneously encoded sources.) The simulation steps needed for inversion are then calculated using a particular assumed velocity (or other physical property) model (5) and simultaneously activated encoded sources using the same encoding scheme used on the measured data. The result is an updated physical properties model (6) that may be further updated (7) by additional iterations.
摘要翻译： 用于在反演过程的仿真步骤中通过使用同时编码的源来减少执行地球物理反演所需的时间的方法。 通过编码（3）一组源集合（1）来准备地球物理勘测数据，使用每组收集从非等效编码签名集合（2）中选出的不同编码签名。 然后，通过将来自每个聚集的相同接收器的所有跟踪相加，将编码的聚集相加（4），导致同时编码的聚集。 （或者，从同时编码的源获得地球物理数据。）然后使用特定的假定速度（或其他物理属性）模型（5）计算反演所需的模拟步骤，并使用与之相同的编码方案同时激活编码的源 测量数据。 结果是可以通过附加迭代进一步更新（7）的更新的物理属性模型（6）。
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公开(公告)号：US20100176791A1
公开(公告)日：2010-07-15
申请号：US12303673
申请日：2007-06-12
申请人： Thomas A Dickens , Charlie Jing , Dennis E. Willen
发明人： Thomas A Dickens , Charlie Jing , Dennis E. Willen
IPC分类号： G01V3/12
摘要： Method for identifying, determining and correcting source-related phase errors in data from a controlled source electromagnetic survey by using data from ordinary survey receivers, i.e. without benefit of source monitoring data. Abrupt anomalies indicating source malfunctions are identified (71) in the time domain by plotting time intervals between neighboring zero crossings or by zero-lag cross correlation between consecutive bins of receiver data, and the amount of the time error (73) can be determined by performing cross correlation between two bins on either side of an anomaly. In the frequency domain, transmitter anomalies can be identified by looking for discontinuities in plots of phase vs. offset, and the corrective phase shift can be determined by matching the phase on one side of the anomaly to that on the other side. A global time/phase shift (76) can be determined by using phase frequency-scaling behavior at near offsets.
摘要翻译： 用于通过使用普通测量接收机的数据来识别，确定和校正来自受控源电磁勘测的源相关相位误差的方法，即不受源监测数据的益处。 在时域中通过绘制相邻过零点之间的时间间隔或接收器数据的连续箱之间的零时相互相关来识别（71）在时域中的突发异常，并且时间误差量（73）可以由 在异常的任一侧执行两个箱之间的互相关。 在频域中，可以通过查找相位偏移图中的不连续性来识别发射机异常，并且可以通过将异常一侧的相位与另一侧的相位匹配来确定校正相移。 全局时间/相移（76）可以通过使用接近偏移的相位频率缩放行为来确定。
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公开(公告)号：US20100018718A1
公开(公告)日：2010-01-28
申请号：US12441685
申请日：2007-09-11
申请人： Jerome R. Krebs , John E. Anderson , Ramesh Neelamani , Charlie Jing , David Hinkley , Thomas A. Dickens , Christine E. Krohn , Peter Traynin
发明人： Jerome R. Krebs , John E. Anderson , Ramesh Neelamani , Charlie Jing , David Hinkley , Thomas A. Dickens , Christine E. Krohn , Peter Traynin
CPC分类号： G06F17/5009 , G01V1/28 , G01V2210/67
摘要： Method for reducing the time needed to perform geophysical inversion by using simultaneous encoded sources in the simulation steps of the inversion process. The geophysical survey data are prepared by encoding (3) a group of source gathers (1), using for each gather a different encoding signature selected from a set (2) of non-equivalent encoding signatures. Then, the encoded gathers are summed (4) by summing all traces corresponding to the same receiver from each gather, resulting in a simultaneous encoded gather (Alternatively, the geophysical data are acquired from simultaneously encoded sources.) The simulation steps needed for inversion are then calculated using a particular assumed velocity (or other physical property) model (5) and simultaneously activated encoded sources using the same encoding scheme used on the measured data. The result is an updated physical properties model (6) that may be further updated (7) by additional iterations.
摘要翻译： 用于在反演过程的仿真步骤中通过使用同时编码的源来减少执行地球物理反演所需的时间的方法。 通过编码（3）一组源集合（1）来准备地球物理勘测数据，使用每组收集从非等效编码签名集合（2）中选出的不同编码签名。 然后，通过对来自每个聚集的相同接收器的所有跟踪进行求和，将编码的聚集相加（4），导致同时编码的聚集（或者，从同时编码的源获取地球物理数据）。反演所需的模拟步骤是 然后使用特定的假定速度（或其他物理属性）模型（5）计算，并使用与测量数据相同的编码方案同时激活编码的源。 结果是可以通过附加迭代进一步更新（7）的更新的物理属性模型（6）。
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公开(公告)号：US5987387A
公开(公告)日：1999-11-16
申请号：US11193
申请日：1998-01-29
摘要： A method of processing seismic data on parallel processors, preferably on a massively parallel processor. The input ot the process is seismic data from one or more of a number of seismic lines. The end product of the invention is a DMO corrected, zero-offset seismic image of the subsurface. By repeating the method on different input offsets, the variation in reflection strength of a reflector as a function of the angle of incidence can be examined. The method includes a two stage parallelization. First, a parallelization over the incoming traces generates a suite of DMO-corrected partial images for each point on each incoming trace. Secondly, a parallelization over output locations accumulates and combines the partial images, and produces output traces.
摘要翻译： PCT No.PCT / US96 / 15818 Sec。 371日期1998年1月29日 102（e）1998年1月29日PCT PCT 1996年10月2日PCT公布。 出版物WO97 / 1321300 日期1997年04月10日一种在并行处理器上处理地震数据的方法，优选地在大规模并行处理器上。 该过程的输入是来自多个地震线中的一个或多个的地震数据。 本发明的最终产物是地下的DMO校正的零偏移地震图像。 通过在不同的输入偏移上重复该方法，可以检查作为入射角的函数的反射器的反射强度的变化。 该方法包括两级并行化。 首先，通过输入轨迹的并行化可以为每个输入轨迹上的每个点生成一组DMO校正的部分图像。 其次，输出位置上的并行化积累并组合部分图像，并产生输出迹线。
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9.发明申请公开(公告)号：US20180017690A1
公开(公告)日：2018-01-18
申请号：US15614960
申请日：2017-06-06
申请人： Sirui Tan , Yaxun Tang , Anatoly I. Baumstein , Gboyega Ayeni , Tetyana Vdovina , Thomas A. Dickens
发明人： Sirui Tan , Yaxun Tang , Anatoly I. Baumstein , Gboyega Ayeni , Tetyana Vdovina , Thomas A. Dickens
摘要： A method for iteratively inverting seismic data to jointly infer a model for at least P-wave velocity and attenuation parameters of the subsurface, the method including: jointly inverting the P-wave velocity and attenuation parameters with an iterative visco-acoustic full wavefield inversion process, wherein the iterative visco-acoustic full wavefield inversion process includes computing a gradient of an objective function, the objective function measuring a misfit between all or part of the seismic data and corresponding model-simulated seismic data; for each of the P-wave velocity and attenuation parameters, computing a search direction in model space from the gradient; determining line search step sizes α and β for the search directions for the P-wave velocity and attenuation parameters, respectively, wherein a ratio of the step sizes is a function of the P-wave velocity parameter; and using the step sizes α and β and the search directions for each of the P-wave velocity and attenuation parameters, computing a new search direction in model space, then performing a line search along the new search direction to arrive at a new step size, and using the new step size and the new search direction to generate an updated model for a current iteration of the iterative visco-acoustic full wavefield inversion process.
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公开(公告)号：US20150293261A1
公开(公告)日：2015-10-15
申请号：US14657962
申请日：2015-03-13
申请人： Thomas A. Dickens
发明人： Thomas A. Dickens
CPC分类号： G01V99/00 , G06F17/12 , G06F17/5009
摘要： Method for rapidly computing updates to frequency-domain seismic wave fields by utilizing a matrix perturbation approach. The method speeds up model (e.g., velocity) parameter estimation by iterative inversion of measured seismic data (21-27). The method applies to the line search where the optimal size of the model update is estimated by testing different size updates to see which one generates the minimum objective function. By treating the model update as a perturbation, perturbation theory is used to relate the model perturbation to a corresponding wavefield perturbation (35). Thus, the Helmholtz equation is solved only once per iteration cycle (22).
摘要翻译： 通过利用矩阵扰动方法快速计算频域地震波场更新的方法。 该方法通过测量的地震数据的迭代反演来加速模型（例如，速度）参数估计（21-27）。 该方法适用于通过测试不同大小更新来估计模型更新的最佳大小以查看哪个生成最小目标函数的行搜索。 通过将模型更新视为扰动，使用扰动理论将模型扰动与相应的波场扰动相关（35）。 因此，亥姆霍兹方程仅在迭代循环中解决一次（22）。
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