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1. 发明授权

US07764572B2 Methods and systems for acoustic waveform processing 有权
标题翻译：用于声波形处理的方法和系统
公开(公告)号：US07764572B2
公开(公告)日：2010-07-27
申请号：US11007402
申请日：2004-12-08
申请人： Peter T. Wu , Jahir Pabon
发明人： Peter T. Wu , Jahir Pabon
IPC分类号： G01V1/40
CPC分类号： G01V1/44
摘要： A technique for processing acoustic waveforms includes: (a) transforming at least a portion of the acoustic waveforms to produce frequency-domain signals; (b) obtaining a model dispersion curve based on a borehole-formation model having a set of borehole-formation parameters; (c) adjusting phases of the frequency-domain signals according to the model dispersion curve to produce back-propagated signals; (d) computing coherence of the back-propagated signals; (e) repeating steps (b)-(d) by varying values of the set of borehole-formation parameters until the coherence reaches a selected criterion; and (f) outputting at least a portion of the set of borehole-formation parameters.
摘要翻译：一种用于处理声波的技术包括：（a）转换至少一部分声波形以产生频域信号; （b）基于具有一组钻孔形成参数的钻孔形成模型获得模型分散曲线; （c）根据模型色散曲线调整频域信号的相位以产生反向传播的信号; （d）计算反向传播信号的相干性; （e）通过改变所述一组钻孔形成参数的值来重复步骤（b） - （d），直到所述一致性达到选定的标准; 和（f）输出该组钻孔形成参数的至少一部分。

2. 发明授权

US07668043B2 Methods and systems for sonic log processing 有权
标题翻译：声波记录处理方法和系统
公开(公告)号：US07668043B2
公开(公告)日：2010-02-23
申请号：US10904035
申请日：2004-10-20
申请人： Peter T. Wu
发明人： Peter T. Wu
IPC分类号： G01V1/40
CPC分类号： G01V1/48
摘要： Techniques for processing sonic waveform data include processing the data based on an initial set of formation-borehole parameters, to produce initial coherence peak attributes, wherein the processing is performed in a borehole; sending the initial coherence peak attributes uphole via telemetry; and correcting the initial coherence peak attributes, based on a second set of formation-borehole parameters, to produce corrected coherence peak attributes.
摘要翻译：用于处理声波波形数据的技术包括基于地层 - 钻孔参数的初始集合处理数据，以产生初始相干峰值属性，其中在钻孔中执行处理; 通过遥测发送初始相干峰属性; 并且基于第二组地层钻孔参数来校正初始相干峰值属性，以产生校正的相干峰值属性。

3. 发明授权

US06957572B1 Apparatus and methods for measuring mud slowness in a borehole 有权
标题翻译：用于测量井眼泥浆慢度的装置和方法
公开(公告)号：US06957572B1
公开(公告)日：2005-10-25
申请号：US10710128
申请日：2004-06-21
申请人： Peter T. Wu
发明人： Peter T. Wu
IPC分类号： E21B47/18 , E21B49/00 , G01V20060101 , G01V1/36 , G01V1/40 , G01V1/48 , G01V1/50
CPC分类号： G01V1/50
摘要： A method for determining mud slowness of a mud in a borehole includes determining slowness as a function of frequency for at least one fluid mode from a set of measurements acquired with a sonic tool in the borehole; and determining the mud slowness from the slowness as a function of frequency for the at least one fluid mode. A downhole sonic tool includes a transmitter capable of generating signals covering a frequency range, a high end of which is more than 30 KHz; and a receiver array comprising a plurality of receivers, which are responsive to the frequency range of the transmitter, wherein the transmitter and the receiver array are spaced apart on a tool body at a selected TR spacing.
摘要翻译：用于确定钻孔中泥浆的泥浆慢度的方法包括：从用钻孔中的声波工具获取的一组测量来确定作为至少一种流体模式的频率的函数的慢度; 以及根据所述至少一种流体模式的频率的函数从所述慢度确定泥浆缓慢。井下声波工具包括能够产生覆盖频率范围的信号的发射机，其高端大于30KHz; 以及接收器阵列，其包括响应于所述发射器的频率范围的多个接收器，其中所述发射器和接收器阵列在所选择的TR间隔处在工具主体上间隔开。

4. 发明授权

US06832159B2 Intelligent diagnosis of environmental influence on well logs with model-based inversion 有权
标题翻译：通过基于模型的反演智能诊断测井对环境的影响
公开(公告)号：US06832159B2
公开(公告)日：2004-12-14
申请号：US10249612
申请日：2003-04-23
申请人： Jan W. Smits , Peter T. Wu , Qiming Li , Cheng Bing Liu
发明人： Jan W. Smits , Peter T. Wu , Qiming Li , Cheng Bing Liu
IPC分类号： G01V1100
CPC分类号： G01V11/00 , G01V1/50
摘要： A method for identifying environmental effects in well log data includes selecting a plurality of models, each of the plurality of models including at least one parameter to be optimized; fitting the models to the well log data by optimizing the at least one parameter, the fitting producing a plurality of optimized models; determining an indicator of goodness of fit for each of the plurality of optimized models; and selecting a model representing a best fit of the well log data based on the indicator.
摘要翻译：用于识别测井数据中的环境影响的方法包括选择多个模型，所述多个模型中的每个模型包括要优化的至少一个参数; 通过优化所述至少一个参数将所述模型拟合到所述测井数据，所述拟合产生多个优化模型; 确定所述多个优化模型中的每一个的适合度的指标; 并根据该指标选择表示井测井数据的最佳拟合的模型。

5. 发明授权

US09606257B2 Real-time fracture detection and fracture orientation estimation using tri-axial induction measurements 有权
$Real-time fracture detection and fracture orientation estimation using tri-axial induction measurements$
公开(公告)号：US09606257B2
公开(公告)日：2017-03-28
申请号：US13217983
申请日：2011-08-25
申请人： Peter T. Wu , Dong Weixin , Thomas D. Barber , Dean Homan
发明人： Peter T. Wu , Dong Weixin , Thomas D. Barber , Dean Homan
IPC分类号： G01V1/40 , G01V3/28
CPC分类号： G01V3/28 , G01V3/38
摘要： A method for determining existence of a fracture in a formation surrounding a wellbore drilled through subsurface rock formations includes calculating vertical resistivity, horizontal resistivity, apparent formation dip, apparent formation azimuth and axial resistivity for a plurality of longitudinal instrument spacings using measurements from a triaxial induction well logging instrument disposed in the formation. A spread in the axial resistivity values is determined and the axial resistivity spread threshold therefrom. Fracture indicator values and fracture orientation values are calculated from transverse components of the triaxial induction measurements. Presence of a fracture is indicated when at least one of the fracture indicator value exceeds a selected threshold, the axial resistivity spread exceeds the spread threshold and when the apparent formation dip exceeds a selected threshold.

6. 发明授权

US08571797B2 Determining borehole corrected formation on properties 失效
标题翻译：确定钻孔校正结构的性质
公开(公告)号：US08571797B2
公开(公告)日：2013-10-29
申请号：US12597977
申请日：2008-05-08
申请人： Peter T. Wu , Hanming Wang , Gerald N. Minerbo
发明人： Peter T. Wu , Hanming Wang , Gerald N. Minerbo
IPC分类号： G01V3/38
CPC分类号： G01V13/00 , G01V1/50 , G01V3/38
摘要： A method to determine one or more borehole corrected formation properties using measurements made using a logging tool disposed in a borehole penetrating an earth formation is disclosed. The measurements are used to determine an apparent conductivity tensor for the formation and, for a set of parameters, a parameter value for each parameter in a subset of the set of parameters. A parameter value for each parameter in the set of parameters not in the subset is provided and a borehole-inclusive modeled conductivity tensor is computed. The apparent conductivity tensor and the borehole-inclusive modeled conductivity tensor are iteratively used to optimize the parameter values, and the optimized parameter values are used to compute an optimized conductivity tensor. A borehole corrected conductivity tensor is computed using the optimized conductivity tensor, and the borehole corrected formation properties are determined using the borehole corrected conductivity tensor and/or the optimized parameter values.
摘要翻译：公开了一种使用设置在穿透地层的钻孔中的测井工具进行的测量来确定一个或多个钻孔校正地层特性的方法。测量用于确定形成的表观电导率张量，并且对于一组参数，确定该组参数的子集中的每个参数的参数值。提供不在子集中的参数集中的每个参数的参数值，并计算包含井眼的建模的电导率张量。迭代地使用表观电导率张量和含钻孔的建模的电导率张量来优化参数值，并且使用优化的参数值来计算优化的电导率张量。使用优化的电导率张量计算钻孔校正的电导率张量，并且使用钻孔校正的电导率张量和/或优化的参数值来确定钻孔校正的形成性质。

7. 发明授权

US08238194B2 Methods and systems for compressing sonic log data 有权
标题翻译：用于压缩声波测井数据的方法和系统
公开(公告)号：US08238194B2
公开(公告)日：2012-08-07
申请号：US11566600
申请日：2006-12-04
申请人： Peter T. Wu , Pierre Campanac , Shu-Kong Chang , James G. L. Thompson , Anshuman Sinha
发明人： Peter T. Wu , Pierre Campanac , Shu-Kong Chang , James G. L. Thompson , Anshuman Sinha
IPC分类号： G01V1/00
CPC分类号： G01V11/002 , G01V1/48 , G01V2200/16 , G01V2210/72
摘要： Methods for compression of sonic log data include STC processing, sorting peak components in the sonic data; filtering the sorted peak components to remove high-frequency portions in the peak components; and decimating the filtered peak components according to a selected ratio to produce compressed data. One method for telemetry transmission of downhole sonic log data includes sorting peak components in the sonic log data; compressing the sorted peak components to produce compressed data; packing the compressed data to produce data packets for telemetry transmission; and sending the data packets using telemetry.
摘要翻译：声波测井数据的压缩方法包括STC处理，在声波数据中排列峰分量; 过滤排序的峰值分量以去除峰值分量中的高频部分; 并根据所选择的比例抽取滤波的峰值分量以产生压缩数据。井下声波测井数据遥测传输的一种方法包括：在声波测井数据中排列峰值分量; 压缩排序的峰值分量以产生压缩数据; 打包压缩数据，产生用于遥测传输的数据包; 并使用遥测发送数据包。

8. 发明申请

US20100198569A1 DETERMINING BOREHOLE CORRECTED FORMATION PROPERTIES 失效
标题翻译：确定孔洞修正形成特性
公开(公告)号：US20100198569A1
公开(公告)日：2010-08-05
申请号：US12597977
申请日：2008-05-08
申请人： Peter T. Wu , Hanming Wang , Gerald N. Minerbo
发明人： Peter T. Wu , Hanming Wang , Gerald N. Minerbo
IPC分类号： G06G7/48
CPC分类号： G01V13/00 , G01V1/50 , G01V3/38
摘要： A method to determine one or more borehole corrected formation properties using measurements made using a logging tool disposed in a borehole penetrating an earth formation is disclosed. The measurements are used to determine an apparent conductivity tensor for the formation and, for a set of parameters, a parameter value for each parameter in a subset of the set of parameters. A parameter value for each parameter in the set of parameters not in the subset is provided and a borehole-inclusive modeled conductivity tensor is computed. The apparent conductivity tensor and the borehole-inclusive modeled conductivity tensor are iteratively used to optimize the parameter values, and the optimized parameter values are used to compute an optimized conductivity tensor. A borehole corrected conductivity tensor is computed using the optimized conductivity tensor, and the borehole corrected formation properties are determined using the borehole corrected conductivity tensor and/or the optimized parameter values.
摘要翻译：公开了一种使用设置在穿透地层的钻孔中的测井工具进行的测量来确定一个或多个钻孔校正地层特性的方法。测量用于确定形成的表观电导率张量，并且对于一组参数，确定该组参数的子集中的每个参数的参数值。提供不在子集中的参数集中的每个参数的参数值，并计算包含井眼的建模的电导率张量。迭代地使用表观电导率张量和含钻孔的建模的电导率张量来优化参数值，并且使用优化的参数值来计算优化的电导率张量。使用优化的电导率张量计算钻孔校正的电导率张量，并且使用钻孔校正的电导率张量和/或优化的参数值来确定钻孔校正的形成性质。

9. 发明授权

US5900733A Well logging method and apparatus for determining downhole Borehole fluid resistivity, borehole diameter, and borehole corrected formation resistivity 失效
标题翻译：测井方法和装置，用于确定井下井眼流体电阻率，井眼直径和钻孔校正地层电阻率
公开(公告)号：US5900733A
公开(公告)日：1999-05-04
申请号：US789902
申请日：1997-01-29
申请人： Peter T. Wu , Jacques R. Tabanou
发明人： Peter T. Wu , Jacques R. Tabanou
IPC分类号： G01V3/30 , G01V3/08 , G01V3/10
CPC分类号： G01V3/30
摘要： A well logging method and apparatus are disclosed for determining borehole corrected formation resistivity, borehole diameter, and downhole borehole fluid (mud) resistivity with improved accuracy. A logging device in the borehole transmits electromagnetic energy from a transmitter, which energy is received at receivers on the logging device. The phase and amplitude of the received energy are measured at the receivers and a phase shift, phase average, and attenuation are associated with the transmitter-to-receivers spacing. The process is then repeated for a plurality of further transmitters having different spacings from the receivers. A formation and borehole model having model values of borehole corrected formation resistivity, borehole diameter, and borehole fluid resistivity is generated. Values of borehole corrected formation resistivity, borehole diameter, and borehole fluid resistivity that would produce a model phase shift, phase average and attenuation corresponding to the measured values of these parameters are then determined.
摘要翻译：公开了一种测井方法和装置，用于确定井眼校正地层电阻率，钻孔直径和井下井眼流体（泥浆）电阻率并提高精度。钻孔中的测井装置从发射器发射电磁能，该能量在测井装置的接收器处被接收。在接收机处测量接收能量的相位和幅度，并且相移，相位平均和衰减与发射机到接收机的间隔相关联。然后对于与接收器具有不同间隔的多个另外的发射器重复该过程。产生具有钻孔校正地层电阻率，井眼直径和井眼流体电阻率的模型值的地层和井眼模型。然后确定将产生对应于这些参数的测量值的模型相移，相位平均和衰减的钻孔校正地层电阻率，井眼直径和钻孔流体电阻率的值。

10. 发明授权

US09482775B2 Real-time formation anisotropy and dip evaluation using tri-axial induction measurements 有权
标题翻译：使用三轴感应测量的实时地层各向异性和浸渍评估
公开(公告)号：US09482775B2
公开(公告)日：2016-11-01
申请号：US13574665
申请日：2011-01-21
申请人： Peter T. Wu , Thomas D. Barber
发明人： Peter T. Wu , Thomas D. Barber
IPC分类号： G01V3/12 , G01V1/42 , G01V3/30 , G06F19/00
CPC分类号： G01V3/12 , G01V1/42 , G01V3/30 , G06F19/00
摘要： The present disclosure relates to a method to determine a formation property of a subsurface formation. A downhole logging tool having two or more tri-axial antennas is provided and used to obtain azimuthally sensitive data. Borehole correction is performed on the obtained data and a ZD-inversion is performed on the borehole corrected data for all antenna spacing groups. A formation indicator flag is determined and, depending on the determined formation indicator flag, a 1D-axial inversion and/or a 1D-radial inversion is performed over selected zones, or neither is performed. The best ZD-inversion results are selected and the 1D-axial inversion results and/or the 1D-radial inversion results, if any, are combined with the selected best ZD-inversion results to form a composite inversion result. The formation property of the subsurface formation is determined using the composite inversion result.
摘要翻译：本公开涉及确定地下地层的地层特性的方法。提供具有两个或更多个三轴天线的井下测井工具，用于获得方位角敏感数据。对获得的数据进行钻孔校正，并对所有天线间隔组的钻孔校正数据执行ZD反转。确定地层指示符标志，并且根据所确定的地层指示标志，在所选择的区域上执行1D轴向反演和/或1D-径向反转，或者两者都不执行。选择最佳ZD反演结果，并将1D轴向反演结果和/或1D-径向反演结果（如果有的话）与所选择的最佳ZD反演结果组合以形成复合反演结果。使用复合反演结果确定地下地层的形成特征。

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