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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
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。
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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
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）。
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13.发明授权公开(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
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。
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14.发明申请公开(公告)号：US20090120636A1
公开(公告)日：2009-05-14
申请号：US11990960
申请日：2006-07-26
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）
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15.发明授权Method for displaying acoustic well logging data by producing travel time stacks 失效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
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。
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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
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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公开(公告)号：US08538699B2
公开(公告)日：2013-09-17
申请号：US12375188
申请日：2007-07-30
摘要： Method for rapid inversion of data from a controlled-source electromagnetic survey of a subterranean region. Selected (51) common-receiver or common-source gathers of the data are reformed into composite gathers (52) by summing their data. Each composite gather is forward modeled (in the inversion process) with multiple active source locations (53). Computer time is reduced in proportion to the ratio of the total number of composite gathers to the total number of original common-receiver or common-source gathers. The data may be phase encoded to prevent data cancellation. Methods for mitigating loss of far offset information by data overlap in the summing process are disclosed.
摘要翻译： 从地下区域的受控源电磁勘探中快速反演数据的方法。 通过对数据进行求和，所选择的（51）公共接收器或公共源数据集合被重新组合成复合集合（52）。 每个复合聚集在多个活动源位置（53）向前建模（在反演过程中）。 计算机时间与复合收集总数与原始公共接收者或共同源集合总数的比例成正比地减少。 可以对数据进行相位编码以防止数据取消。 公开了通过求和过程中的数据重叠来减轻远偏移信息的丢失的方法。
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公开(公告)号：US08498845B2
公开(公告)日：2013-07-30
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
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。
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公开(公告)号：US08311745B2
公开(公告)日：2012-11-13
申请号：US13299164
申请日：2011-11-17
申请人： Dennis E. Willen
发明人： Dennis E. Willen
摘要： The invention is a method for suppressing noise in controlled source electromagnetic survey data based on the frequency content of the noise. The invention recognizes that some data variations across bins cannot be attributed to resistivity variations within the earth. This variation across bins constitutes a model of noise in such surveys, and the invention mitigates noises that obey this model. Noise varying rapidly in either space or time is removed by filtering temporal frequency domain data (131) with a low-pass filter (134) having a selected cutoff frequency (133).
摘要翻译： 本发明是一种基于噪声的频率含量来抑制受控源电磁勘测数据中的噪声的方法。 本发明认识到，一些数据变化不能归因于地球内的电阻率变化。 这种变化在这种调查中构成了噪声模型，本发明减轻了遵守这一模型的噪声。 通过用具有选择的截止频率（133）的低通滤波器（134）对时间频域数据（131）进行滤波来消除在空间或时间上快速变化的噪声。
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公开(公告)号：US20120061092A1
公开(公告)日：2012-03-15
申请号：US13299164
申请日：2011-11-17
申请人： Dennis E. Willen
发明人： Dennis E. Willen
摘要： The invention is a method for suppressing noise in controlled source electromagnetic survey data based on the frequency content of the noise. The invention recognizes that some data variations across bins cannot be attributed to resistivity variations within the earth. This variation across bins constitutes a model of noise in such surveys, and the invention mitigates noises that obey this model. Noise varying rapidly in either space or time is removed by filtering temporal frequency domain data (131) with a low-pass filter (134) having a selected cutoff frequency (133).
摘要翻译： 本发明是一种基于噪声的频率含量来抑制受控源电磁勘测数据中的噪声的方法。 本发明认识到，一些数据变化不能归因于地球内的电阻率变化。 这种变化在这种调查中构成了噪声模型，本发明减轻了遵守这一模型的噪声。 通过用具有选择的截止频率（133）的低通滤波器（134）对时间频域数据（131）进行滤波来消除在空间或时间上快速变化的噪声。
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