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    • 1. 发明授权
    • Method and apparatus for acoustic detection of a fluid leak behind a casing of a borehole
    • 用于声学检测钻孔套管后面的流体泄漏的方法和装置
    • US07219762B2
    • 2007-05-22
    • US10559090
    • 2004-05-12
    • Simon JamesPeter Fitzgerald
    • Simon JamesPeter Fitzgerald
    • G01V1/00
    • G01V1/50E21B47/101
    • An acoustic detection of a discrete acoustic signal allows to detect a leak behind a casing (23) of a borehole. An acoustic amplitude (AA) is sampled during a recording time period (24; 64) at a determined position along the tube. Time intervals (26; 66) are defined inside of the recording time period (24), and for each time interval (26) the measured acoustic amplitudes are processed to obtain respectively a corresponding power-frequency spectrum (261). A plurality of the power-frequency spectra are analyzed to identify the discrete acoustic signal by detecting time and frequency dependant changes of power. Preferably the processing involves a Fourier transform analysis. A power-frequency time plot is used to conveniently identify the discrete acoustic event.
    • 离散声学信号的声学检测允许检测钻孔的壳体(23)后面的泄漏。 在记录时间段(24; 64)期间,沿着管的确定位置采样声振幅(AA)。 时间间隔(26; 66)被定义在记录时间周期(24)内,并且对于每个时间间隔(26),处理测量的声振幅以分别获得对应的功率频谱(261)。 通过检测功率的时间和频率相关的变化来分析多个功率频谱以识别离散的声学信号。 优选地,处理涉及傅里叶变换分析。 功率频率时间图用于方便地识别离散声学事件。
    • 2. 发明申请
    • Method and apparatus for acoustic detection of a fluid leak behind a casing of a borehole
    • 用于声学检测钻孔套管后面的流体泄漏的方法和装置
    • US20060133203A1
    • 2006-06-22
    • US10559090
    • 2004-05-12
    • Simon JamesPeter Fitzgerald
    • Simon JamesPeter Fitzgerald
    • G01V1/00
    • G01V1/50E21B47/101
    • An acoustic detection of a discrete acoustic signal allows to detect a leak behind a casing (23) of a borehole. An acoustic amplitude (AA) is sampled during a recording time period (24;64) at a determined position along the tube. Time intervals (26;66) are defined inside of the recording time period (24), and for each time interval (26) the measured acoustic amplitudes are processed to obtain respectively a corresponding power-frequency spectrum (261). A plurality of the power-frequency spectra are analyzed to identify the discrete acoustic signal by detecting time and frequency dependant changes of power. Preferably the processing involves a Fourier transform analysis. A power-frequency time plot is used to conveniently identify the discrete acoustic event.
    • 离散声学信号的声学检测允许检测钻孔的壳体(23)后面的泄漏。 在记录时间段(24; 64)期间,沿着管的确定位置采样声振幅(AA)。 时间间隔(26; 66)被定义在记录时间周期(24)内,并且对于每个时间间隔(26),处理测量的声振幅以分别获得对应的功率频谱(261)。 通过检测功率的时间和频率相关的变化来分析多个功率频谱以识别离散的声学信号。 优选地,处理涉及傅里叶变换分析。 功率频率时间图用于方便地识别离散声学事件。
    • 4. 发明授权
    • Method for determining the size of tubular pipe to be inserted in a borehole
    • 用于确定插入钻孔中的管状管的尺寸的方法
    • US07905281B2
    • 2011-03-15
    • US11952607
    • 2007-12-07
    • Peter Fitzgerald
    • Peter Fitzgerald
    • E21B47/00
    • E21B47/08E21B43/10
    • A method for determining the size of tubular pipe to be inserted into an interval of cased or uncased borehole is disclosed. The position of the borehole wall or innermost casing surface in the interval is determined and a window length that is less than the length of the interval is defined. A series of windows along the interval is defined and for each window, the determined position of the borehole wall in that window is used to define a polygon, the edges of which are defined by the parts of the borehole wall closest to the borehole axis in that window. The maximum size of pipe diameter that will fit inside the polygon in each window without intersecting the edges is determined and the size of pipe to be inserted into the interval selected based on the maximum size of diameter pipe determined for each window.
    • 公开了一种用于确定插入到套管或未钻井的间隔中的管状管的尺寸的方法。 确定间隔中钻孔壁或最内壳体表面的位置,并定义小于间隔长度的窗口长度。 定义了沿着间隔的一系列窗口,并且对于每个窗口,在该窗口中确定的井眼壁的位置用于限定多边形,其多边形由最靠近钻孔轴线的钻孔壁的部分限定 那个窗口。 确定将在每个窗口内的多边形内部不会与边缘相交的最大尺寸的管道直径,并根据为每个窗口确定的直径管道的最大尺寸选择要插入的间隔的管道尺寸。
    • 5. 发明授权
    • Well access line positioning assembly
    • 接入线定位组件
    • US07874372B2
    • 2011-01-25
    • US12170512
    • 2008-07-10
    • Joseph VarkeyPeter FitzgeraldHifzi Ardic
    • Joseph VarkeyPeter FitzgeraldHifzi Ardic
    • E21B19/22
    • E21B19/22E21B47/0006
    • An assembly for positioning a well access line in a well. The assembly is located between a supply of well access line and a well, with the line running through the assembly and to the well. Multiple pulleys are incorporated into the assembly about which a well access line such as a conventional wireline may be wrapped. The pulleys are biased to one another such that slack in the line may be stored at the assembly and drawn on in the event of line tension spiking up to a predetermined amount. As such, tension in the line may be kept to a minimum so as to avoid damage to the line during a well access operation. Furthermore, should the tension in the line fail to come back down to below the predetermined amount, the well access operation may be halted in an automated manner. Halting may proceed while continuing to allow take-up of the slack in the line until completed halting of the operation is achieved.
    • 用于将井接入线定位在井中的组件。 组件位于井口供水管线和井之间,管线穿过组件和井。 多个滑轮被并入到组件中,诸如常规电缆的井接入线可围绕该组滑动。 滑轮彼此偏置,使得线路中的松弛可以被存储在组件处,并且在线张力尖峰到达预定量的情况下被拉开。 因此,线路中的张力可以保持最小,以避免在井接入操作期间损坏线路。 此外,如果线路中的张力不能恢复到低于预定量,则可以以自动方式停止井口操作。 停止可以继续允许收回线路中的松弛,直到完成停止操作。
    • 10. 发明申请
    • Drum Load Monitoring
    • 鼓负荷监测
    • US20100319910A1
    • 2010-12-23
    • US12486882
    • 2009-06-18
    • Sebastien IvesPeter Fitzgerald
    • Sebastien IvesPeter Fitzgerald
    • E21B19/00E21B47/00G01L1/00G06F19/00
    • E21B47/00B66D1/58E21B19/02E21B19/08G01B21/02G01L5/04
    • An assembly for monitoring load on a drum during an operation in a well with a well access line deployed from the drum. The assembly may include multiple line detection mechanisms for acquiring real-time information relative to dynamic characteristics of the lone over the course of the operation. The assembly also includes a processor for computing the real-time information in light of pre-stored information relative to physical characteristics of the line and the drum. As a result, real-time monitoring of a load on the drum may be achieved. Thus, the operation may be adjusted in real-time as necessary to avoid over-loading of the drum. Additionally, a drum load history may be recorded so as to better account for the true condition of the drum following successive operations.
    • 一种用于监测在与从滚筒展开的井接入线的井中的操作期间在滚筒上的负载的组件。 组件可以包括用于在操作过程中相对于孤独的动态特性获取实时信息的多线检测机构。 该组件还包括一个处理器,用于根据预先存储的关于线和滚筒的物理特性的信息来计算实时信息。 因此,可以实现对滚筒上的负载的实时监控。 因此,可以根据需要实时地调整操作以避免滚筒的过载。 此外,可以记录鼓的负载历史,以便更好地说明连续操作之后的滚筒的真实状况。