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公开(公告)号：US06943709B2
公开(公告)日：2005-09-13
申请号：US10755753
申请日：2004-01-12
CPC分类号： G01V1/48
摘要： A self-adaptable data compression technique includes compressing the digital data points of a waveform according to at least a first protocol and a second protocol, and various comparing the compressed data under various protocols to determine which would require the least memory for storage.
摘要翻译： 自适应数据压缩技术包括根据至少第一协议和第二协议压缩波形的数字数据点，以及各种协议下的压缩数据的各种比较，以确定哪个将需要最少的存储器进行存储。
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公开(公告)号：US20140090891A1
公开(公告)日：2014-04-03
申请号：US14118776
申请日：2011-05-31
IPC分类号： E21B49/00
CPC分类号： E21B49/006 , G01V1/42 , G01V1/50 , G01V2210/624 , G01V2210/6242
摘要： Methods and systems for gathering, deriving, and displaying the azimuthal brittleness index of a borehole. At least some embodiments include various methods for calculating and displaying borehole measurements in real-time for geosteering and drilling operations. At least one disclosed method embodiment for calculating and displaying azimuthal brittleness includes taking measurements of compressional and shear wave velocities as a function of position and orientation from inside the borehole. These velocity measurements are taken by a azimuthal sonic tool. Azimuthal brittleness is then derived based at least in part on the compressional and shear wave velocities.
摘要翻译： 收集，推导和显示井眼方位脆性指数的方法和系统。 至少一些实施例包括用于实时地进行地质导向和钻井操作的用于计算和显示钻孔测量的各种方法。 用于计算和显示方位脆性的至少一个公开的方法实施例包括从井眼内部测量作为位置和取向的函数的压缩和剪切波速度。 这些速度测量由方位声波工具进行。 至少部分地基于压缩和剪切波速度导出方位角脆性。
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公开(公告)号：US20110231097A1
公开(公告)日：2011-09-22
申请号：US12595294
申请日：2007-04-19
申请人： Jennifer A. Market
发明人： Jennifer A. Market
CPC分类号： G01V1/48
摘要： A tool and processing system to provide an acoustic radial profile. A frequency semblance is performed on received time signals obtained from an array of acoustic receivers (FIG. 2, blocks 204, 206) so as to provide a set of frequency semblance values in frequency-slowness coordinate space. These frequency semblance values are transformed to a set of frequency semblance values in wavelength-slowness coordinate space (FIG. 2, block 208), from which a radial profile (FIG. 2, block 210) may be provided by utilizing a relationship between wavelength and radial depth.
摘要翻译： 提供声学径向剖面的工具和处理系统。 对从声学接收器阵列（图2，框204,206）获得的接收到的时间信号执行频率外形，以便在频率 - 慢度坐标空间中提供一组频率相似值。 这些频率相似值被转换成波长 - 慢度坐标空间中的一组频率相似值（图2，方框208），可以通过利用波长之间的关系来提供径向轮廓（图2，框210） 和径向深度。
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公开(公告)号：US06691036B2
公开(公告)日：2004-02-10
申请号：US10243471
申请日：2002-09-13
IPC分类号： G01R148
CPC分类号： G01V1/48
摘要： A method for creating a frequency domain semblance for use in conjunction with acoustic logging tools is disclosed. Such a frequency domain semblance may be obtained by transforming an acoustic signal received at multiple depths into the frequency domain, combining the received waveforms corresponding to the different depth, and expressing the result in a graph with slowness and frequency axes. This graph shows the frequency-slowness location for the acoustic signal, as well as for other related signals that may inadvertently be generated by the acoustic logging tool. This information may then be used to more clearly measure the slowness of the received acoustic signal. Another aspect of the invention is the treatment of two or more time domain semblances as probability density functions of the slowness for an acoustic signal. This enables the combination of time domain semblances from the same depth in the wellbore.
摘要翻译： 公开了一种用于创建与声学测井工具结合使用的频域外观的方法。 可以通过将在多个深度处接收到的声信号变换为频域，组合对应于不同深度的接收波形，并将该结果表示为具有慢度和频率轴的图形来获得这样的频域相似度。 该图显示了声信号的频率 - 慢度位置，以及可能无意中由声学测井工具产生的其他相关信号。 然后可以使用该信息来更清楚地测量接收的声信号的慢度。 本发明的另一方面是将两个或更多个时域外观的处理作为声信号的慢度的概率密度函数。 这使得能够在井眼中从相同深度组合时域外观。
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公开(公告)号：US09238966B2
公开(公告)日：2016-01-19
申请号：US14118776
申请日：2011-05-31
CPC分类号： E21B49/006 , G01V1/42 , G01V1/50 , G01V2210/624 , G01V2210/6242
摘要： Methods and systems for gathering, deriving, and displaying the azimuthal brittleness index of a borehole. At least some embodiments include various methods for calculating and displaying borehole measurements in real-time for geosteering and drilling operations. At least one disclosed method embodiment for calculating and displaying azimuthal brittleness includes taking measurements of compressional and shear wave velocities as a function of position and orientation from inside the borehole. These velocity measurements are taken by a azimuthal sonic tool. Azimuthal brittleness is then derived based at least in part on the compressional and shear wave velocities.
摘要翻译： 收集，推导和显示井眼方位脆性指数的方法和系统。 至少一些实施例包括用于实时地进行地质导向和钻井操作的用于计算和显示钻孔测量的各种方法。 用于计算和显示方位脆性的至少一个公开的方法实施例包括从井眼内部测量作为位置和取向的函数的压缩和剪切波速度。 这些速度测量由方位声波工具进行。 至少部分地基于压缩和剪切波速度导出方位角脆性。
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公开(公告)号：US06453240B1
公开(公告)日：2002-09-17
申请号：US09547304
申请日：2000-04-11
IPC分类号： G01R148
CPC分类号： G01V1/48
摘要： A method for creating a frequency domain semblance for use in conjunction with acoustic logging tools is disclosed. Such a frequency domain semblance may be obtained by transforming an acoustic signal received at multiple depths into the frequency domain, combining the received waveforms corresponding to the different depth, and expressing the result in a graph with slowness and frequency axes. This graph shows the frequency-slowness location for the acoustic signal, as well as for other related signals that may inadvertently be generated by the acoustic logging tool. This information may then be used to more clearly measure the slowness of the received acoustic signal. Another aspect of the invention is the treatment of two or more time domain semblances as probability density functions of the slowness for an acoustic signal. This enables the combination of time domain semblances from the same depth in the wellbore. Once combined, the time domain semblances more accurately depict the slowness of an acoustic wave through the formation at the selected depth. In addition, a related self-adaptation method to compress the waveform data downhole for storage or transmission is also disclosed.
摘要翻译： 公开了一种用于创建与声学测井工具结合使用的频域外观的方法。 可以通过将在多个深度处接收到的声信号变换为频域，组合对应于不同深度的接收波形，并将该结果表示为具有慢度和频率轴的图形来获得这样的频域相似度。 该图显示了声信号的频率 - 慢度位置，以及可能无意中由声学测井工具产生的其他相关信号。 然后可以使用该信息来更清楚地测量接收的声信号的慢度。 本发明的另一方面是将两个或更多个时域外观的处理作为声信号的慢度的概率密度函数。 这使得能够在井眼中从相同深度组合时域外观。 一旦组合，时域外观更准确地描绘了通过选定深度处的地层的声波的缓慢。 另外，还公开了用于压缩在井下进行存储或传输的波形数据的相关自适应方法。
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