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.

    Processing sonic waveform measurements
    3.
    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
    4.
    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。

    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。

    Cased borehole tool orientation measurement
    8.
    发明授权
    Cased borehole tool orientation measurement 有权
    套管井眼工具定位测量

    公开(公告)号:US08141635B2

    公开(公告)日:2012-03-27

    申请号:US12248176

    申请日:2008-10-09

    IPC分类号: E21B47/00 E21B47/022

    CPC分类号: E21B47/024

    摘要: Methods and related systems are described for use for determining orientation of a measurement tool in a cased borehole. The measurement tool is deployed in a cased section of a borehole. The tool includes a volume containing a reference fluid having a first density, and a marker within the fluid having a different density. The position of the marker within volume containing the reference fluid is senses, and orientation information of the measurement tool is determined based at least in part on combining information relating to the position of the marker with prior recorded data representing orientation measurements made while the section of the borehole was not yet cased.

    摘要翻译: 描述了用于确定套管钻孔中的测量工具的取向的方法和相关系统。 测量工具部署在钻孔的套管部分。 该工具包括含有具有第一密度的参考流体的体积,以及具有不同密度的流体内的标记物。 标记在包含参考流体的体积内的位置是感觉的,并且至少部分地基于组合关于标记的位置的信息与表示当在 钻孔还没有开始。

    Automated mud slowness estimation
    9.
    发明授权
    Automated mud slowness estimation 有权
    自动泥浆慢度估计

    公开(公告)号:US08009509B2

    公开(公告)日:2011-08-30

    申请号:US12100211

    申请日:2008-04-09

    IPC分类号: G01V1/28 G01V1/50

    CPC分类号: G01V1/50

    摘要: An integrated framework is described for automating some or all of mud slowness estimation for both fast and slow formations. An estimation of fluid slowness based on monopole radial profiling is calculated if conditions permit. Alternatively, an estimation of fluid slowness based on Scholte wave slowness is estimated if conditions do not permit calculation based on monopole radial profiling. Tool standoff may also be estimated based on monopole radial profiling.

    摘要翻译: 描述了一个综合框架,用于自动化快速和慢速地层的部分或全部泥浆慢度估计。 如果条件允许,则计算基于单极径向剖面的流体缓慢的估计。 或者,如果条件不允许基于单极径向剖面的计算,则估计基于Scholte波慢度的流体慢度的估计。 也可以基于单极径向轮廓来估计刀具对位。

    Processing time series data embedded in high noise
    10.
    发明授权
    Processing time series data embedded in high noise 有权
    处理时间序列数据嵌入高噪声

    公开(公告)号:US09334718B2

    公开(公告)日:2016-05-10

    申请号:US12652405

    申请日:2010-01-05

    IPC分类号: G01V1/40 E21B43/26 G01V1/28

    摘要: Automatic detection and accurate time picking of weak events embedded in strong noise such as microseismicity induced by hydraulic fracturing is accomplished by: a noise reduction step to separate out the noise and estimate its spectrum; an events detection and confidence indicator step, in which a new statistical test is applied to detect which time windows contain coherent arrivals across components and sensors in the multicomponent array and to indicate the confidence in this detection; and a time-picking step to accurately estimate the time of onset of the arrivals detected above and measure the time delay across the array using a hybrid beamforming method incorporating the use of higher order statistics. In the context of hydraulic fracturing, this could enhance the coverage and mapping of the fractures while also enabling monitoring from the treatment well itself where there is usually much higher and spatially correlated noise.

    摘要翻译: 自动检测和精确时间采集嵌入强噪声(如水力压裂引起的微震)的弱事件是通过以下方式实现的:通过降噪步骤分离噪声并估计其频谱; 事件检测和置信指标步骤,其中应用新的统计测试以检测哪个时间窗口包含多组件阵列中的组件和传感器之间的相干到达,并指示该检测的置信度; 以及精确估计上述检测到达时间的时间选择步骤,并且使用结合使用更高阶统计量的混合波束成形方法来测量阵列上的时间延迟。 在水力压裂的背景下,这可以增强裂缝的覆盖和映射,同时还能够从处理井本身进行监测,其中通常有更高的空间相关噪声。