FILTERING ACOUSTIC WAVEFORMS IN DOWNHOLE ENVIRONMENTS
    2.
    发明申请
    FILTERING ACOUSTIC WAVEFORMS IN DOWNHOLE ENVIRONMENTS 有权
    在井下环境中滤波声波

    公开(公告)号:US20120147702A1

    公开(公告)日:2012-06-14

    申请号:US13310780

    申请日:2011-12-04

    IPC分类号: G01V1/40

    CPC分类号: G01V1/48 G01V1/44 G01V2210/23

    摘要: Methods and apparatus to filter acoustic waveforms in downhole environments are described. An example method involves receiving acoustic waveform data representing acoustic signals traversing at least a portion of a borehole adjacent a subterranean formation and performing a direct transform operation on the acoustic waveform data to generate wavelet map data. The wavelet map data comprises a time-frequency representation of the acoustic waveform data. The example method also involves identifying a waveform of interest via the wavelet map data, extracting data associated with the waveform of interest from the wavelet map data, generating filtered wavelet map data based on the extracted data, and performing an inverse transform operation on the filtered wavelet map data to generate filtered acoustic waveform data

    摘要翻译: 描述了在井下环境中滤波声波的方法和装置。 示例性方法包括接收表示穿过邻近地层的钻孔的至少一部分的声信号的声波形数据,并且对声波形数据执行直接变换操作以产生小波图数据。 小波图数据包括声波形数据的时间 - 频率表示。 该示例方法还涉及通过小波变换图数据识别感兴趣的波形,从小波变换数据中提取与感兴趣波形相关联的数据,基于所提取的数据产生滤波后的小波变换数据,并对经滤波的 小波图数据生成滤波后的声波形数据

    Global classification of sonic logs
    3.
    发明授权
    Global classification of sonic logs 有权
    声波测井全球分类

    公开(公告)号:US07337068B2

    公开(公告)日:2008-02-26

    申请号:US11010204

    申请日:2004-12-10

    IPC分类号: G01V1/00

    CPC分类号: G01V1/48

    摘要: A method of determining the sonic slowness of a formation traversed by a borehole comprising generating tracks from sonic waveform peaks received at a plurality of depths wherein the peaks that are not classified prior to tracking is set forth. A method for generating a slowness versus depth log is generated for waveform arrivals by classifying long tracks, classifying small tracks; classifying tracks that overlap; filling in gaps; and creating a final log is disclosed. In further improvements, non-classified tracks and interpolation are used to fill in gaps.

    摘要翻译: 确定由钻孔穿过的地层的声音慢度的方法包括从在多个深度处接收的声波波形峰值产生轨迹,其中在跟踪之前未分类的峰值被阐述。 通过对长轨道进行分类,对小轨迹进行分类,生成波形到达时间的生成慢度对深度对数的方法; 分类重叠的曲目; 填补空白; 并且公开了创建最终日志。 在进一步的改进中,使用非分类轨迹和内插填补空白。

    Filtering acoustic waveforms in downhole environments
    4.
    发明授权
    Filtering acoustic waveforms in downhole environments 有权
    在井下环境中滤波声波

    公开(公告)号:US08848484B2

    公开(公告)日:2014-09-30

    申请号:US13310780

    申请日:2011-12-04

    IPC分类号: G01V1/48 G01V1/44

    CPC分类号: G01V1/48 G01V1/44 G01V2210/23

    摘要: Methods and apparatus to filter acoustic waveforms in downhole environments are described. An example method involves receiving acoustic waveform data representing acoustic signals traversing at least a portion of a borehole adjacent a subterranean formation and performing a direct transform operation on the acoustic waveform data to generate wavelet map data. The wavelet map data comprises a time-frequency representation of the acoustic waveform data. The example method also involves identifying a waveform of interest via the wavelet map data, extracting data associated with the waveform of interest from the wavelet map data, generating filtered wavelet map data based on the extracted data, and performing an inverse transform operation on the filtered wavelet map data to generate filtered acoustic waveform data

    摘要翻译: 描述了在井下环境中滤波声波的方法和装置。 示例性方法包括接收表示穿过邻近地层的钻孔的至少一部分的声信号的声波形数据,并且对声波形数据执行直接变换操作以产生小波图数据。 小波图数据包括声波形数据的时间 - 频率表示。 该示例方法还涉及通过小波变换图数据识别感兴趣的波形,从小波变换数据中提取与感兴趣波形相关联的数据,基于所提取的数据产生滤波后的小波变换数据,并对经滤波的 小波图数据生成滤波后的声波形数据

    Global classification of sonic logs
    5.
    发明申请
    Global classification of sonic logs 有权
    声波测井全球分类

    公开(公告)号:US20050143922A1

    公开(公告)日:2005-06-30

    申请号:US11010204

    申请日:2004-12-10

    IPC分类号: G01V1/48 G01V1/00

    CPC分类号: G01V1/48

    摘要: A method of determining the sonic slowness of a formation traversed by a borehole comprising generating tracks from sonic waveform peaks received at a plurality of depths wherein the peaks that are not classified prior to tracking is set forth. A method for generating a slowness versus depth log is generated for waveform arrivals by classifying long tracks, classifying small tracks; classifying tracks that overlap; filling in gaps; and creating a final log is disclosed. In further improvements, non-classified tracks and interpolation are used to fill in gaps.

    摘要翻译: 确定由钻孔穿过的地层的声音慢度的方法包括从在多个深度处接收的声波波形峰值产生轨迹,其中在跟踪之前未分类的峰值被阐述。 通过对长轨道进行分类,对小轨迹进行分类,生成波形到达时间的生成慢度对深度对数的方法; 分类重叠的曲目; 填补空白; 并且公开了创建最终日志。 在进一步的改进中,使用非分类轨迹和内插填补空白。

    Processing sonic waveform measurements
    6.
    发明授权
    Processing sonic waveform measurements 有权
    处理声波测量

    公开(公告)号:US06654688B1

    公开(公告)日:2003-11-25

    申请号:US09937935

    申请日:2002-01-18

    IPC分类号: G01V300

    CPC分类号: G01V1/48

    摘要: Methods for determining the best value for at least one slowness-related parameter that has been determined in a number of ways is disclosed. Sonic logging data input in the methods are processed to determine multiple values of at least one slowness-related parameter using slowness/time coherence (STC) processing methods. The error of each determined parameter is determined and the determined errors used in selecting a representative parameter value from the multiple determined slowness-related parameter values.

    摘要翻译: 公开了用于确定已经以多种方式确定的至少一个慢度相关参数的最佳值的方法。 使用慢度/时间相干(STC)处理方法处理方法中输入的声波记录数据以确定至少一个慢度相关参数的多个值。 确定每个确定的参数的误差,并且从多个确定的慢度相关参数值中选择确定的误差用于选择代表参数值。

    Global classification of sonic logs

    公开(公告)号:US06845325B2

    公开(公告)日:2005-01-18

    申请号:US10005497

    申请日:2001-11-08

    IPC分类号: G01V1/48 G01V1/00 G01V1/28

    CPC分类号: G01V1/48

    摘要: A method of determining the sonic slowness of a formation traversed by a borehole comprising generating tracks from sonic waveform peaks received at a plurality of depths wherein the peaks that are not classified prior to tracking is set forth. A method for generating a slowness versus depth log is generated for waveform arrivals by classifying long tracks, classifying small tracks; classifying tracks that overlap; filling in gaps; and creating a final log is disclosed. In further improvements, non-classified tracks and interpolation are used to fill in gaps.