Methods and Apparatus to Process Time Series Data for Propagating Signals in A Subterranean Formation
    31.
    发明申请
    Methods and Apparatus to Process Time Series Data for Propagating Signals in A Subterranean Formation 审中-公开
    用于处理地层中传播信号的时间序列数据的方法和装置

    公开(公告)号:US20120201096A1

    公开(公告)日:2012-08-09

    申请号:US13497252

    申请日:2010-10-27

    IPC分类号: G01V1/40

    CPC分类号: G01V1/44

    摘要: Methods and apparatus to process time series data for propagating signals in a subterranean formation are disclosed. An example method described herein for processing measured data comprises receiving a time series of measured data obtained by sensing a propagating signal, the propagating signal having passed through a subterranean formation, transforming the time series of measured data to generate a time-frequency representation of the time series, and processing the time-frequency representation to at least one of reduce noise in the time frequency representation, or enhance a component of the propagating signal present in the time-frequency representation.

    摘要翻译: 公开了处理地层中传播信号的时间序列数据的方法和装置。 本文描述的用于处理测量数据的示例性方法包括接收通过感测传播信号获得的测量数据的时间序列,传播信号已经通过地下地层,变换测量数据的时间序列以产生时间序列 时间序列,并且将时间频率表示处理为时间频率表示中的减少噪声中的至少一个,或增强存在于时间频率表示中的传播信号的分量。

    AUTOMATIC DISPERSION EXTRACTION OF MULTIPLE TIME OVERLAPPED ACOUSTIC SIGNALS
    32.
    发明申请
    AUTOMATIC DISPERSION EXTRACTION OF MULTIPLE TIME OVERLAPPED ACOUSTIC SIGNALS 有权
    多时间叠加声音信号的自动分散提取

    公开(公告)号:US20100157731A1

    公开(公告)日:2010-06-24

    申请号:US12644862

    申请日:2009-12-22

    IPC分类号: G01V1/00

    摘要: Slowness dispersion characteristics of multiple possibly interfering signals in broadband acoustic waves as received by an array of two or more sensors are extracted without using a physical model. The problem of dispersion extraction is mapped to the problem of reconstructing signals having a sparse representation in an appropriately chosen over-complete dictionary of basis elements. A sparsity penalized signal reconstruction algorithm is described where the sparsity constraints are implemented by imposing a l1 norm type penalty. The candidate modes that are extracted are consolidated by means of a clustering algorithm to extract phase and group slowness estimates at a number of frequencies which are then used to reconstruct the desired dispersion curves. These estimates can be further refined by building time domain propagators when signals are known to be time compact, such as by using the continuous wavelet transform.

    摘要翻译: 在不使用物理模型的情况下提取由两个或更多个传感器的阵列接收的宽带声波中的多个可能干扰信号的慢度色散特性。 色散提取的问题被映射到在基本元素的适当选择的过完整字典中重建具有稀疏表示的信号的问题。 描述了稀疏惩罚信号重建算法,其中稀疏约束通过施加l1范数类型惩罚来实现。 提取的候选模式通过聚类算法进行合并,以提取多个频率的相位和组慢度估计,然后用于重建所需的色散曲线。 当已知信号是时间紧凑的,例如通过使用连续小波变换,可以通过构建时域传播器来进一步改进这些估计。

    Methods and systems for detecting arrivals of interest
    33.
    发明授权
    Methods and systems for detecting arrivals of interest 有权
    检测感兴趣的人的方法和系统

    公开(公告)号:US07675813B2

    公开(公告)日:2010-03-09

    申请号:US12186533

    申请日:2008-08-06

    IPC分类号: G01V1/40

    CPC分类号: G01V1/48 G01V1/288

    摘要: Methods and systems for taking measurements related to subterranean formations. The methods and systems provide robust, reliable first arrival data for component signals of interest, which may be used to estimate formation slowness, characterize formation slowness zones, or act as an input to other processes. The methods and systems are capable of automatically providing good first arrival data based on signals received without any human interaction, and without setting or changing any parameters.

    摘要翻译: 用于测量与地下地层相关的测量方法和系统。 方法和系统为感兴趣的分量信号提供鲁棒,可靠的第一到达数据,其可用于估计地层慢度,表征地层慢度带,或作为其他过程的输入。 这些方法和系统能够基于接收到的信号而自动提供良好的第一到达数据,而不需要任何人类交互,并且不设置或改变任何参数。

    AUTOMATED MUD SLOWNESS ESTIMATION
    34.
    发明申请
    AUTOMATED MUD SLOWNESS ESTIMATION 有权
    自动化MUD SLOWNESS估算

    公开(公告)号:US20090257307A1

    公开(公告)日:2009-10-15

    申请号:US12100211

    申请日:2008-04-09

    IPC分类号: G01V1/50 E21B47/14

    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。

    Methods and systems for detecting arrivals of interest
    36.
    发明授权
    Methods and systems for detecting arrivals of interest 有权
    检测感兴趣的人的方法和系统

    公开(公告)号:US07423930B2

    公开(公告)日:2008-09-09

    申请号:US10819362

    申请日:2004-04-06

    IPC分类号: G01V1/40 G01V1/50

    CPC分类号: G01V1/48 G01V1/288

    摘要: Methods and systems for taking measurements related to subterranean formations. The methods and systems provide robust, reliable first arrival data for component signals of interest, which may be used to estimate formation slowness, characterize formation slowness zones, or act as an input to other processes. The methods and systems are capable of automatically providing good first arrival data based on signals received without any human interaction, and without setting or changing any parameters.

    摘要翻译: 用于测量与地下地层相关的测量方法和系统。 方法和系统为感兴趣的分量信号提供鲁棒,可靠的第一到达数据,其可用于估计地层慢度,表征地层慢度带,或作为其他过程的输入。 这些方法和系统能够基于接收到的信号而自动提供良好的第一到达数据,而不需要任何人类交互,并且不设置或改变任何参数。

    Methods and systems for detecting arrivals of interest
    37.
    发明申请
    Methods and systems for detecting arrivals of interest 有权
    检测感兴趣的人的方法和系统

    公开(公告)号:US20050128872A1

    公开(公告)日:2005-06-16

    申请号:US10819362

    申请日:2004-04-06

    IPC分类号: G01V1/28 G01V1/48 G01V1/40

    CPC分类号: G01V1/48 G01V1/288

    摘要: Methods and systems for taking measurements related to subterranean formations. The methods and systems provide robust, reliable first arrival data for component signals of interest, which may be used to estimate formation slowness, characterize formation slowness zones, or act as an input to other processes. The methods and systems are capable of automatically providing good first arrival data based on signals received without any human interaction, and without setting or changing any parameters.

    摘要翻译: 用于测量与地下地层相关的测量方法和系统。 方法和系统为感兴趣的分量信号提供鲁棒,可靠的第一到达数据,其可用于估计地层慢度,表征地层慢度带,或作为其他过程的输入。 这些方法和系统能够基于接收到的信号而自动提供良好的第一到达数据,而不需要任何人类交互,并且不设置或改变任何参数。