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公开(公告)号：US08682102B2
公开(公告)日：2014-03-25
申请号：US12911851
申请日：2010-10-26
申请人： Junichi Sugiura , Jun Zhang , Zhipeng Liu , Paul Boonen
发明人： Junichi Sugiura , Jun Zhang , Zhipeng Liu , Paul Boonen
摘要： A method for removing cyclic noise from a borehole image includes transforming the image into the frequency domain using a two-dimensional (2-D) transform (e.g., using a discrete cosine transform). The cyclic noise components (peaks) are removed from the transformed image which is then inverse transformed back into the spatial domain using an inverse 2-D transform to obtain a corrected image. An automated method enables the cyclic peaks to be identified and removed from the borehole image via downhole processing.
摘要翻译： 从井眼图像中去除循环噪声的方法包括使用二维（2-D）变换（例如，使用离散余弦变换）将图像变换成频域。 循环噪声分量（峰值）从变换图像中去除，然后使用逆二维变换逆向变换回空间域，以获得校正图像。 一种自动化方法使得能够通过井下处理从钻孔图像识别和去除循环峰。
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公开(公告)号：US20100322533A1
公开(公告)日：2010-12-23
申请号：US12486954
申请日：2009-06-18
申请人： Jun Zhang , Paul Boonen , Zhipeng Liu
发明人： Jun Zhang , Paul Boonen , Zhipeng Liu
摘要： A method for removing cyclic noise from a borehole image includes transforming the image into the frequency domain using a two-dimensional (2-D) Fourier Transform, removing cyclic noise components from the transformed image, and inverse transforming the image back into the spatial domain using an inverse 2-D Fourier Transform. The cyclic noise component may also be isolated by subtracting the corrected image from the original image or by removing all non-cyclic noise components from the transformed image prior to inverse transforming. Removal of the cyclic noise from a borehole image tends to enable the identification of borehole features and provide for improved accuracy in formation parameter evaluation. Evaluation of the cyclic noise component may also enable the source of the noise to be identified and mitigated.
摘要翻译： 从井眼图像中去除循环噪声的方法包括使用二维（2-D）傅里叶变换将图像变换到频域，从变换后的图像中去除循环噪声分量，以及将图像反向变换回空间域 使用逆二维傅里叶变换。 也可以通过从原始图像中减去校正图像或者在逆变换之前从变换图像中去除所有非循环噪声分量来隔离循环噪声分量。 从井眼图像中去除循环噪声往往能够识别井眼特征，并提供了改进的地层参数评估精度。 循环噪声分量的评估还可以使噪声的来源被识别和减轻。
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公开(公告)号：US08655104B2
公开(公告)日：2014-02-18
申请号：US12486954
申请日：2009-06-18
申请人： Jun Zhang , Zhipeng Liu , Paul Boonen
发明人： Jun Zhang , Zhipeng Liu , Paul Boonen
摘要： A method for removing cyclic noise from a borehole image includes transforming the image into the frequency domain using a two-dimensional (2-D) Fourier Transform, removing cyclic noise components from the transformed image, and inverse transforming the image back into the spatial domain using an inverse 2-D Fourier Transform. The cyclic noise component may also be isolated by subtracting the corrected image from the original image or by removing all non-cyclic noise components from the transformed image prior to inverse transforming. Removal of the cyclic noise from a borehole image tends to enable the identification of borehole features and provide for improved accuracy in formation parameter evaluation. Evaluation of the cyclic noise component may also enable the source of the noise to be identified and mitigated.
摘要翻译： 从井眼图像中去除循环噪声的方法包括使用二维（2-D）傅里叶变换将图像变换到频域，从变换后的图像中去除循环噪声分量，以及将图像反向变换回空间域 使用逆二维傅里叶变换。 也可以通过从原始图像中减去校正图像或者在逆变换之前从变换图像中去除所有非循环噪声分量来隔离循环噪声分量。 从井眼图像中去除循环噪声往往能够识别井眼特征，并提供了改进的地层参数评估精度。 循环噪声分量的评估还可以使噪声的来源被识别和减轻。
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公开(公告)号：US20110038559A1
公开(公告)日：2011-02-17
申请号：US12911851
申请日：2010-10-26
申请人： Junichi Sugiura , Jun Zhang , Paul Boonen , Zhipeng Liu
发明人： Junichi Sugiura , Jun Zhang , Paul Boonen , Zhipeng Liu
摘要： A method for removing cyclic noise from a borehole image includes transforming the image into the frequency domain using a two-dimensional (2-D) transform (e.g., using a discrete cosine transform). The cyclic noise components (peaks) are removed from the transformed image which is then inverse transformed back into the spatial domain using an inverse 2-D transform to obtain a corrected image. An automated method enables the cyclic peaks to be identified and removed from the borehole image via downhole processing.
摘要翻译： 从井眼图像中去除循环噪声的方法包括使用二维（2-D）变换（例如，使用离散余弦变换）将图像变换成频域。 循环噪声分量（峰值）从变换图像中去除，然后使用逆二维变换逆向变换回空间域，以获得校正图像。 一种自动化方法使得能够通过井下处理从钻孔图像识别和去除循环峰。
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公开(公告)号：US09115568B2
公开(公告)日：2015-08-25
申请号：US12568847
申请日：2009-09-29
申请人： Wei Han , Jun Zhang , Paul Boonen
发明人： Wei Han , Jun Zhang , Paul Boonen
摘要： A downhole measurement tool includes at least one regular receiver and at least one reference receiver externally deployed on a tool body. The reference receiver is configured to be acoustically isolated from the borehole, for example, via an isolation structure including a high-impedance cap and a low-impedance gap. The reference receiver may be deployed in a linear array with the regular receiver(s) and may be substantially identical to the regular receiver(s) such that it has substantially the same sensitivity to tool mode signals and internal drilling noise as do the regular receivers. Received waveforms may be processed so as to remove tool mode arrivals and/or drilling noise.
摘要翻译： 井下测量工具包括至少一个常规接收器和外部部署在工具主体上的至少一个参考接收器。 参考接收器被配置为与钻孔隔声隔离，例如通过包括高阻抗帽和低阻抗间隙的隔离结构。 参考接收机可以部署在具有常规接收机的线性阵列中，并且可以与常规接收机基本相同，使得其具有与工作模式信号和内部钻孔噪声基本相同的灵敏度，如常规接收机 。 可以处理接收的波形，以便去除工具模式到达和/或钻孔噪声。
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公开(公告)号：US20110073368A1
公开(公告)日：2011-03-31
申请号：US12568847
申请日：2009-09-29
申请人： Wei Han , Jun Zhang , Paul Boonen
发明人： Wei Han , Jun Zhang , Paul Boonen
摘要： A downhole measurement tool includes at least one regular receiver and at least one reference receiver externally deployed on a tool body. The reference receiver is configured to be acoustically isolated from the borehole, for example, via an isolation structure including a high-impedance cap and a low-impedance gap. The reference receiver may be deployed in a linear array with the regular receiver(s) and may be substantially identical to the regular receiver(s) such that it has substantially the same sensitivity to tool mode signals and internal drilling noise as do the regular receivers. Received waveforms may be processed so as to remove tool mode arrivals and/or drilling noise.
摘要翻译： 井下测量工具包括至少一个常规接收器和外部部署在工具主体上的至少一个参考接收器。 参考接收器被配置为与钻孔隔声隔离，例如通过包括高阻抗帽和低阻抗间隙的隔离结构。 参考接收机可以部署在具有常规接收机的线性阵列中，并且可以与常规接收机基本相同，使得其具有与工作模式信号和内部钻孔噪声基本相同的灵敏度，如常规接收机 。 可以处理接收的波形，以便去除工具模式到达和/或钻孔噪声。
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7.发明申请ACOUSTIC WAVEFORM STACKING USING AZIMUTHAL AND/OR STANDOFF BINNING 有权使用AZIMUTHAL和/或STANDOFF BINNING的声音波形堆叠公开(公告)号：US20120044783A1
公开(公告)日：2012-02-23
申请号：US12858626
申请日：2010-08-18
申请人： Tsili Wang , Paul Boonen
发明人： Tsili Wang , Paul Boonen
IPC分类号： G01V1/40
CPC分类号： G01V1/46 , G01V2210/47
摘要： A method for making acoustic logging measurements includes grouping received acoustic waveforms into one of a plurality of groups, each group being representative of a measured borehole condition (e.g., a range of measured standoff values and/or a range of measured azimuth angles). The waveforms stored in at least one of the groups are stacked so as to obtain an averaged waveform. The averaged waveform may be further processed, for example, via a semblance algorithm to obtain at least one acoustic wave slowness.
摘要翻译： 用于进行声学测井测量的方法包括将接收到的声波形分组成多个组中的一个组，每组代表测量的井眼状况（例如，测量的间隔值的范围和/或测量的方位角的范围）。 存储在至少一个组中的波形被堆叠以获得平均波形。 可以例如经由相似算法进一步处理平均波形以获得至少一个声波慢度。
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8.发明申请公开(公告)号：US20110280102A1
公开(公告)日：2011-11-17
申请号：US12781266
申请日：2010-05-17
申请人： Tsili Wang , Paul Boonen
发明人： Tsili Wang , Paul Boonen
IPC分类号： G01V1/40
CPC分类号： G01V1/50
摘要： A method for determining an acoustic anisotropy of a subterranean formation includes measuring acoustic wave slownesses at three or more toolface angles while rotating a logging while drilling tool in a borehole. Compressional, shear, and/or guided wave slownesses may be measured. The measured slownesses are fit to a mathematical model to obtain maximum and minimum slownesses. The maximum and minimum slownesses are processed to determine the acoustic anisotropy of the formation.
摘要翻译： 用于确定地下地层的声学各向异性的方法包括在钻孔中钻探工具的同时旋转测井同时测量三个或更多个工具面角度的声波慢度。 可以测量压缩，剪切和/或引导的波慢。 测量的慢度适合于获得最大和最小慢度的数学模型。 处理最大和最小慢度以确定地层的声学各向异性。
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公开(公告)号：US08625390B2
公开(公告)日：2014-01-07
申请号：US12858626
申请日：2010-08-18
申请人： Tsili Wang , Paul Boonen
发明人： Tsili Wang , Paul Boonen
IPC分类号： G01V1/40
CPC分类号： G01V1/46 , G01V2210/47
摘要： A method for making acoustic logging measurements includes grouping received acoustic waveforms into one of a plurality of groups, each group being representative of a measured borehole condition (e.g., a range of measured standoff values and/or a range of measured azimuth angles). The waveforms stored in at least one of the groups are stacked so as to obtain an averaged waveform. The averaged waveform may be further processed, for example, via a semblance algorithm to obtain at least one acoustic wave slowness.
摘要翻译： 用于进行声学测井测量的方法包括将接收到的声波形分组成多个组中的一个组，每组代表测量的井眼状况（例如，测量的间隔值的范围和/或测量的方位角的范围）。 存储在至少一个组中的波形被堆叠以获得平均波形。 可以例如经由相似算法进一步处理平均波形以获得至少一个声波慢度。
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10.发明授权公开(公告)号：US08547788B2
公开(公告)日：2013-10-01
申请号：US12781266
申请日：2010-05-17
申请人： Tsili Wang , Paul Boonen
发明人： Tsili Wang , Paul Boonen
IPC分类号： G01V1/00
CPC分类号： G01V1/50
摘要： A method for determining an acoustic anisotropy of a subterranean formation includes measuring acoustic wave slownesses at three or more toolface angles while rotating a logging while drilling tool in a borehole. Compressional, shear, and/or guided wave slownesses may be measured. The measured slownesses are fit to a mathematical model to obtain maximum and minimum slownesses. The maximum and minimum slownesses are processed to determine the acoustic anisotropy of the formation.
摘要翻译： 用于确定地下地层的声学各向异性的方法包括在钻孔中钻探工具的同时旋转测井同时测量三个或更多个工具面角度的声波慢度。 可以测量压缩，剪切和/或引导的波慢。 测量的慢度适合于获得最大和最小慢度的数学模型。 处理最大和最小慢度以确定地层的声学各向异性。
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