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1. 发明授权

US09746577B2 Uncertainty estimation of subsurface resistivity solutions 有权
公开(公告)号：US09746577B2
公开(公告)日：2017-08-29
申请号：US14271131
申请日：2014-05-06
申请人： Adrian Ciucivara , Dennis E. Willen
发明人： Adrian Ciucivara , Dennis E. Willen
IPC分类号： G06F7/60 , G06F17/10 , G01V3/38 , G06F17/50
CPC分类号： G01V3/38 , G01V2210/62 , G06F17/50
摘要： Method for estimating uncertainty in a physical property model generated by inverting measured geophysical data, for example, a resistivity model inferred from electromagnetic field data. The method involves as few as one data inversion coupled with a number of forward simulation. Alternative solutions (models) are generated by probing a perturbation space defined from a reduced model space, resulting from a principal component decomposition of the inverted model, and selecting some of the larger components. Statistical analysis techniques may be applied (to those alternative solutions remaining after thresholding) to generate quantitative uncertainty estimates applicable to the inverted model.

2. 发明申请

US20130179137A1 Reducing the Dimensionality of the Joint Inversion Problem 审中-公开
标题翻译：减少联合反转问题的维度
公开(公告)号：US20130179137A1
公开(公告)日：2013-07-11
申请号：US13814214
申请日：2011-06-27
申请人： Anoop A. Mullur , Dennis E. Willen , Rebecca L. Saltzer
发明人： Anoop A. Mullur , Dennis E. Willen , Rebecca L. Saltzer
IPC分类号： G06F17/50
CPC分类号： G06F17/5009 , G01V3/12 , G01V3/18 , G01V11/00 , G01V2210/6163 , G01V2210/6165
摘要： Method for reducing a 3D joint inversion of at least two different types of geophysical data acquired by 3-D surveys (21) to an equivalent set of ID inversions. First, a 3D inversion is performed on each data type separately to the yield a 3-D model of a physical property corresponding to the data type (22). Next, a ID model of the physical property is extracted at selected (x,y) locations. A ID simulator (23) and the ID model of the physical property is then used at each of the selected locations to create a synthetic ID data set at each location (24). Finally, the ID synthetic data sets for each different type of geophysical data are jointly inverted at each of the selected locations, yielding improved values of the physical properties. Because the joint inversion is a ID inversion, the method is computationally advantageous, while recognizing the impact of 3-D effects.
摘要翻译：将通过三维调查（21）获得的至少两种不同类型的地球物理数据的3D联合反演减少为等效的一组ID反转的方法。首先，分别对每种数据类型执行3D反演以产生与数据类型（22）对应的物理属性的3-D模型。接下来，在所选择的（x，y）位置提取物理属性的ID模型。然后在每个所选择的位置处使用ID模拟器（23）和物理属性的ID模型来在每个位置（24）创建合成ID数据集。最后，每个不同类型的地球物理数据的ID合成数据集合在每个选定位置处共同反转，产生改善的物理特性值。因为联合反演是一个ID反转，所以该方法在计算上是有利的，同时识别3-D效应的影响。

3. 发明申请

US20110264421A1 Method For Geophysical Imaging 有权
标题翻译：地球物理成像方法
公开(公告)号：US20110264421A1
公开(公告)日：2011-10-27
申请号：US13018711
申请日：2011-02-01
申请人： Charlie Jing , Dennis E. Willen
发明人： Charlie Jing , Dennis E. Willen
IPC分类号： G06F17/10 , G06G7/48
CPC分类号： G01V3/38
摘要： Method for transforming electromagnetic survey data acquired from a subsurface region to a subsurface resistivity model indicative of hydrocarbon accumulations or lack thereof. In one embodiment, data are selected for two or more non-zero frequencies (100), and a structural model of the region is developed based on available geological or geophysical information. An initial resistivity model of the region is developed based on the structural model (101), and the selected data are inverted to update the resistivity model (106) by iterative forward modeling (103) and minimizing an objective function (105) including a term measuring mismatch between model synthesized data and measured survey data, and another term being a diffusive regularization term that smoothes the resistivity model (104). The regularization term can involve a structure or geology constraint, such as an anisotropic resistivity symmetry axis or a structure axis, determined from the a priori information (102).
摘要翻译：将从地下区域获取的电磁勘测数据转换为表示碳氢化合物积聚或缺乏的地下电阻率模型的方法。在一个实施例中，为两个或多个非零频率（100）选择数据，并且基于可用的地质或地球物理信息来开发该区域的结构模型。基于结构模型（101）开发该区域的初始电阻率模型，并且通过迭代正向建模（103）反转所选择的数据以更新电阻率模型（106）并最小化包括项目的目标函数（105）测量模型合成数据与测量的测量数据之间的不匹配，另一个术语是平滑电阻率模型的扩散正则化项（104）。正则化术语可以涉及从先验信息（102）确定的结构或地质学约束，例如各向异性电阻率对称轴或结构轴。

4. 发明申请

US20110166840A1 Systems and Methods For Subsurface Electromagnetic Mapping 审中-公开
标题翻译：地下电磁测绘系统与方法
公开(公告)号：US20110166840A1
公开(公告)日：2011-07-07
申请号：US13056041
申请日：2009-08-31
申请人： Kenneth E. Green , Leslie A. Wahrmund , Oliver M. Burtz , Dennis E. Willen , Rebecca L. Saltzer , Leonard J. Srnka
发明人： Kenneth E. Green , Leslie A. Wahrmund , Oliver M. Burtz , Dennis E. Willen , Rebecca L. Saltzer , Leonard J. Srnka
IPC分类号： G06G7/50 , G06F17/10
CPC分类号： G01V3/38 , G01V3/12
摘要： Systems and methods which provide electromagnetic subsurface mapping to derive information with respect to subsurface features whose sizes are near to or below the resolution of electromagnetic data characterizing the subsurface are shown. Embodiments operate to identify a region of interest (203) in a resistivity image generated (202) using electromagnetic data (201). One or more scenarios may be identified for the areas of interest, wherein the various scenarios comprise representations of features whose sizes are near to or below the resolution of the electromagnetic data (204). According to embodiments, the scenarios are evaluated (205), such as using forward or inverse modeling, to determine each scenarios' fit to the available data and further to determine their geologic reasonableness (206). Resulting scenarios may be utilized in a number of ways, such as to be substituted in a resistivity image for a corresponding region of anomalous resistivity for enhancing the resistivity image (207).
摘要翻译：示出了提供电磁地下映射以相对于其尺寸接近或低于表征地下电磁数据的分辨率的地下特征的信息的系统和方法。实施例用于使用电磁数据（201）识别生成（202）的电阻率图像中的感兴趣区域（203）。可以针对感兴趣的区域识别一个或多个场景，其中各种场景包括尺寸接近或低于电磁数据（204）的分辨率的特征的表示。根据实施例，评估方案（205），例如使用正向或反向建模，以确定每个场景适合于可用数据并进一步确定其地质合理性（206）。可以以多种方式利用所得到的场景，例如在电阻率图像中替代用于增强电阻率图像的异常电阻率的对应区域（207）。

5. 发明授权

US07933741B2 Estimating noise at one frequency by sampling noise at other frequencies 有权
标题翻译：通过在其他频率采样噪声来估计一个频率的噪声
公开(公告)号：US07933741B2
公开(公告)日：2011-04-26
申请号：US12501251
申请日：2009-07-10
申请人： Dennis E. Willen , Xinyou Lu
发明人： Dennis E. Willen , Xinyou Lu
IPC分类号： G06F19/00
CPC分类号： G01R29/26 , G01V3/083
摘要： A method, apparatus and computer program for improving the signal-to-noise ratio of a signal S(t), S(t) containing Signal and noise, are disclosed. A measurement of S(t) at a frequency-of-interest is obtained. Noise measurements of S(t) at one or more noise frequencies where the Signal portion of S(t) is expected to be small are obtained. The noise at the frequency-of-interest is estimated using the noise measurements at the one or more noise frequencies. The estimated noise is subtracted from the measurement of S(t) at the frequency-of-interest.
摘要翻译：公开了一种用于提高包含信号和噪声的信号S（t），S（t）的信噪比的方法，装置和计算机程序。获得感兴趣频率的S（t）的测量值。获得预期S（t）的信号部分的一个或多个噪声频率处的S（t）的噪声测量值。使用在一个或多个噪声频率处的噪声测量来估计感兴趣频率处的噪声。从感兴趣频率的S（t）的测量中减去估计的噪声。

6. 发明申请

US20100176791A1 Method For Correcting The Phase of Electromagnetic Data 有权
标题翻译：电磁数据相位校正方法
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
CPC分类号： G01V3/12 , G01V3/083
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。

7. 发明申请

US20090120636A1 Method for performing controlled source electomagnetic surveying with multiple transmitters 有权
标题翻译：用多个发射机执行受控源电磁测量的方法
公开(公告)号：US20090120636A1
公开(公告)日：2009-05-14
申请号：US11990960
申请日：2006-07-26
申请人： Philip J. Summerfield , Dennis E. Willen
发明人： Philip J. Summerfield , Dennis E. Willen
IPC分类号： G01V1/24 , G01V1/28
CPC分类号： G01V3/083
摘要： Method for separating responses of multiple transmitters m a controlled source electromagnetic survey by using mutually orthogonal transmitter waveforms and transforming the combined response to the frequency domain (144) The mutual orthogonality can be based disjoint frequency spectra or on phase encoding of a common waveform element (FIG. 14)
摘要翻译：用于分离多个发射机的响应的方法通过使用相互正交的发射机波形来控制源电磁勘测，并将组合响应变换到频域（144）互相正交性可以是基于不相交的频谱或公共波形元素的相位编码（图 14）

8. 发明授权

US5987387A Method of dip moveout analysis on a massively parallel computer 失效
标题翻译：在大型并行计算机上的倾斜移动分析方法
公开(公告)号：US5987387A
公开(公告)日：1999-11-16
申请号：US11193
申请日：1998-01-29
申请人： Thomas A. Dickens , William A. Schneider, Jr. , Dennis E. Willen
发明人： Thomas A. Dickens , William A. Schneider, Jr. , Dennis E. Willen
IPC分类号： G01V1/28 , G06F17/10 , G06F19/00
CPC分类号： G06F17/10 , G01V1/28
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。

9. 发明授权

US4672588A Method for displaying acoustic well logging data by producing travel time stacks 失效
标题翻译：通过产生旅行时间堆叠显示声学测井数据的方法
公开(公告)号：US4672588A
公开(公告)日：1987-06-09
申请号：US684994
申请日：1984-12-20
申请人： Dennis E. Willen
发明人： Dennis E. Willen
IPC分类号： G01V1/36 , G01V1/48 , G01V1/00
CPC分类号： G01V1/48 , G01V1/362
摘要： A method for producing a display of acoustic signals received during full waveform acoustic well logging. In a preferred embodiment, the signals received at the individual receiver (or receivers) of the logging tool are stacked along lines of constant acoustic velocity to produce for display a stacked signal. Preferably, the raw signals are weighted prior to the stacking step, to compensate for decreasing amplitude of the acoustic arrival of interest with increasing transmitter to receiver distance. The stacked signals produced may be displayed in various formats, such as on a linear or logarithmic scale of inverse acoustic velocity, or of formation porosity. In a preferred embodiment, resulting in production for display of stacked signals providing greater resolution in the direction of the borehole axis, pairwise stacked signals are produced from data received at adjacent receivers, and after two or more acoustic transmitter firings at distinct positions in the borehole, the pairwise stacked signals associated with common depth intervals are added together and the resulting common depth stacks for each depth interval are displayed. The method makes full use of the entire wavetrain of the individual receiver signals processed in accordance therewith, and is sufficiently efficient to facilitate processing and display of acoustic logging data at the well site.
摘要翻译：一种用于产生在全波形声波测井期间接收的声信号的显示的方法。在优选实施例中，在测井工具的单个接收器（或接收器）处接收的信号沿恒定声速的线堆叠以产生用于显示堆叠信号。优选地，原始信号在堆叠步骤之前被加权，以便随着发射机到接收机距离的增加来补偿感兴趣的声学到达的幅度的减小。产生的堆叠信号可以以各种格式显示，例如以反声速度的线性或对数尺度或形成孔隙度。在优选实施例中，产生用于显示在钻孔轴方向上提供更高分辨率的堆叠信号，成对堆叠信号是从在相邻接收机处接收的数据产生的，并且在两个或多个声发射器在钻孔中的不同位置发射，将与公共深度间隔相关联的成对堆叠信号相加在一起，并且显示针对每个深度间隔的所得到的公共深度堆叠。该方法充分利用根据其处理的各个接收机信号的整个波束，并且足以有效地促进在井位处的声学测井数据的处理和显示。

10. 发明授权

US11231516B2 Direct migration of simultaneous-source survey data 有权
公开(公告)号：US11231516B2
公开(公告)日：2022-01-25
申请号：US16399216
申请日：2019-04-30
申请人： Young Ho Cha , Dennis E. Willen
发明人： Young Ho Cha , Dennis E. Willen
IPC分类号： G01V1/34 , G01V1/28 , G01V1/36
摘要： A method and apparatus for hydrocarbon management including generating an image of a subsurface formation by: obtaining simultaneous-source survey data, an earth model, and a first and a second velocity model of the subsurface formation; generating synthetic survey data with at least one of the earth model, the first velocity model, and the second velocity model. The method and apparatus may include directly migrating the simultaneous-source survey data; migrating the synthetic survey data; and subtracting the migrated synthetic survey data from the migrated simultaneous-source survey data. The method and apparatus may include subtracting the synthetic survey data from the simultaneous-source survey data; and directly migrating the result of the subtraction. The method and apparatus may include generating an artifact-reduced image.

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