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    • 2. 发明授权
    • Multimode acoustic imaging in cased wells
    • 套管井中的多模声学成像
    • US07522471B2
    • 2009-04-21
    • US10566934
    • 2004-08-02
    • Benoit FroelichJean-Luc Le CalvezEmmanuel LegendreSmaine Zeroug
    • Benoit FroelichJean-Luc Le CalvezEmmanuel LegendreSmaine Zeroug
    • G01V1/40G01V1/50
    • G01V1/50E21B47/0005
    • A well casing is insonified with a first acoustic wave in a first mode that may be any mode of a set including: extensional mode, thickness mode, flexural mode. A first echo is received at a first acoustic transducer for receiving, a first signal is produced and a first measurement is extracted from the first signal. The casing is then insonified with a second acoustic wave in a second mode that may be any mode of the set of modes but is distinct from the first mode. A second echo is received at a selected second acoustic transducer for receiving and a second signal is produced. A second measurement is extracted from the second signal. The zone behind the casing of the well is evaluated from a combination of the first measurement and the second measurement.
    • 使用第一模式的第一声波来增强井套,其可以是包括延伸模式,厚度模式,弯曲模式在内的任何模式。 在第一声学换能器处接收第一回波用于接收,产生第一信号并且从第一信号中提取第一测量值。 然后,壳体以第二模式的第二声波被增强,其可以是该组模式中的任何模式,但是与第一模式不同。 在所选择的第二声换能器处接收第二回波用于接收,并且产生第二信号。 从第二信号提取第二测量。 从第一测量和第二测量的组合评估井的壳体后面的区域。
    • 4. 发明申请
    • Slowness-frequency projection display and animation
    • 慢频投影显示和动画
    • US20050190651A1
    • 2005-09-01
    • US10789210
    • 2004-02-27
    • Thomas PlonaMichael KaneRam ShenoySmaine Zeroug
    • Thomas PlonaMichael KaneRam ShenoySmaine Zeroug
    • G01V1/34G01V1/50
    • G01V1/50G01V1/34
    • The present invention describes several techniques for displaying sonic logging data that provide highly reliable, visual quality-control (QC) indicators. One aspect of the present invention is directed to a novel display of sonic logging data corresponding to a slowness frequency analysis (SFA) projection log. One of the benefits of the SFA projection log display of the present invention is that the format of the information displayed may be used to visually confirm the accuracy/inaccuracy of the processed sonic logging data over selected depth intervals. The SFA projection log display may also be used to visually identify any potential problematic or inconsistent portions of the processed sonic logging information. An overlay of estimated wave slowness information may also be displayed onto the SFA log display in a manner which enables an observer of the SFA log display to visually assess the relative accuracy of the estimated wave slowness information over selected depth intervals. The SFA log display may also include a navigable pointer mechanism configured or designed to allow a user to navigate within the SFA log display in order to access depth specific sonic logging information associated with selected depths. In this way selected characteristics of depth specific sonic logging information may be accessed and displayed concurrently with log information for an entire depth interval.
    • 本发明描述了用于显示提供高度可靠的视觉质量控制(QC)指标的声波测井数据的几种技术。 本发明的一个方面涉及对应于慢速频率分析(SFA)投影日志的声波测井数据的新颖显示。 本发明的SFA投影记录显示器的优点之一是所显示的信息的格式可以用于在所选择的深度间隔上视觉地确认经处理的声波记录数据的准确度/不准确度。 SFA投影记录显示器也可用于视觉识别经处理的声波测井信息的任何潜在的有问题或不一致的部分。 估计的波浪慢度信息的叠加也可以以使得SFA日志显示的观察者可视地评估所选择的深度间隔上的估计的波浪慢度信息的相对精度的方式显示在SFA日志显示上。 SFA日志显示器还可以包括被配置或设计为允许用户在SFA日志显示内导航以便访问与所选择的深度相关联的深度特定声波记录信息的导航指针机构。 以这种方式,可以与整个深度间隔的日志信息同时访问和显示深度特定声波记录信息的所选特征。