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13 条记录 (耗时 0.025 秒)

    Data recovery for pulse telemetry using pulse position modulation
    1.
    发明授权
    Data recovery for pulse telemetry using pulse position modulation 有权
    使用脉冲位置调制的脉冲遥测数据恢复

    公开(公告)号：US06963290B2

    公开(公告)日：2005-11-08

    申请号：US10305529

    申请日：2002-11-27

    申请人： Laban M. Marsh ,  Cili Sun ,  Bipin K. Pillai ,  Leonardo Viana

    发明人： Laban M. Marsh ,  Cili Sun ,  Bipin K. Pillai ,  Leonardo Viana

    IPC分类号： E21B47/18 ,  G08C19/20

    CPC分类号： E21B47/18

    摘要： The specification discloses algorithms for error recovery in pulse position modulation-based mud pulse telemetry. More particularly, the specification discloses detection and attempted correction of at least five possible error mechanisms: the missed detection of a pulse that creates an interval greater than maximum; the missed detection of a pulse that results in an interval still within acceptable boundaries; detection of an extra pulse; a pulse shift that results in data in contiguous intervals being affected; and a pulse shift resulting in a single interval data corruption.

    摘要翻译： 该规范公开了基于脉冲位置调制的泥浆脉冲遥测中的误差恢复算法。 更具体地，本说明书公开了至少五种可能的误差机制的检测和尝试校正：产生大于最大值的间隔的脉冲的漏检; 错误检测导致间隔仍在可接受边界内的脉冲; 检测额外脉冲; 导致连续间隔中的数据受到影响的脉冲移位; 并且脉冲移位导致单个间隔数据损坏。

    Structure and method for pulse telemetry
    3.
    发明授权
    Structure and method for pulse telemetry 有权
    脉冲遥测的结构和方法

    公开(公告)号：US06788219B2

    公开(公告)日：2004-09-07

    申请号：US10306487

    申请日：2002-11-27

    申请人： Cili Sun ,  Laban M. Marsh ,  Bipin K. Pillai

    发明人： Cili Sun ,  Laban M. Marsh ,  Bipin K. Pillai

    IPC分类号： H04L2730

    CPC分类号： G01V11/002

    摘要： A mud pulse telemetry technique that uses a number of bits per interval based on parameters of the pulse position modulation system in order to reduce data transfer time in a pulse position modulation system. More particularly, depending on parameters of the pulse position modulation such as the minimum-time and the bit-width, it may be possible to decrease overall transmission time by splitting values having a larger number of bits into multiple transmissions with each transmission having a smaller number of bits.

    摘要翻译： 一种泥浆脉冲遥测技术，其基于脉冲位置调制系统的参数使用每个间隔的位数，以减少脉冲位置调制系统中的数据传输时间。 更具体地，根据诸如最小时间和位宽的脉冲位置调制的参数，可以通过将具有较大位数的值分成多个传输来减少总传输时间，每个传输具有较小的 位数。

    Method and system for predicting performance of a drilling system
    6.
    发明授权
    Method and system for predicting performance of a drilling system 有权
    用于预测钻井系统性能的方法和系统

    公开(公告)号：US09249654B2

    公开(公告)日：2016-02-02

    申请号：US13122149

    申请日：2009-08-17

    申请人： Michael John Strachan ,  Cili Sun

    发明人： Michael John Strachan ,  Cili Sun

    IPC分类号： E21B12/02 ,  E21B44/00

    CPC分类号： E21B44/00

    摘要： A system for drilling a well comprises a drill string in a wellbore having a bit at a distal end thereof. At least one sensor measures a drilling parameter. A computer controller has a set of instructions stored therein to process the measured drilling parameter over a drilled interval to calculate, in substantially real time, an updated friction slope and an updated worn bit slope and to calculate an updated drilling parameter for at least a portion of the well-based on the updated friction slope and the updated worn bit slope.

    摘要翻译： 用于钻井的系统包括在井眼中的钻柱，在其远端具有钻头。 至少有一个传感器测量钻孔参数。 计算机控制器具有存储在其中的一组指令，以在钻孔间隔上处理测量的钻孔参数，以基本上实时的方式计算更新的摩擦斜率和更新的磨损位斜率，并计算至少一部分的更新的钻孔参数 基于更新的摩擦坡度和更新的磨损位斜率。

    Downlink telemetry system
    10.
    发明授权
    Downlink telemetry system 有权
    下行遥测系统

    公开(公告)号：US06920085B2

    公开(公告)日：2005-07-19

    申请号：US09783158

    申请日：2001-02-14

    申请人： Michael Dewayne Finke ,  Doyle Raymond Warren, II ,  Cili Sun ,  Bipin Kumar Pillai

    发明人： Michael Dewayne Finke ,  Doyle Raymond Warren, II ,  Cili Sun ,  Bipin Kumar Pillai

    IPC分类号： E21B47/18 ,  H04H60/31 ,  H04H9/00

    CPC分类号： E21B47/185

    摘要： A downlink telemetry system providing improved apparatus and methods for communicating instructions via pressure pulses from surface equipment to a downhole assembly. The apparatus comprises a surface transmitter for generating pressure pulses, a control system, and a downhole receiver for receiving and decoding pulses.In operation, a bypass valve is opened and closed to create a series of pressure pulses received and decoded by a downhole receiver. The method significantly reduces the time required for downlink communication without interrupting drilling and without interrupting uplink communications such that simultaneous, bi-directional communication is achievable if the uplink and downlink signals are sent at different frequencies.The telemetry scheme and algorithm provide an inventive method for filtering and decoding the downlink signals. The algorithm determines the time intervals between pulse peaks and decodes the intervals into an instruction. The algorithm also includes error checking for verifying that the instruction was properly received downhole.

    摘要翻译： 一种下行链路遥测系统，其提供改进的装置和方法，用于经由来自地面设备的压力脉冲向井下组件通信指令。 该装置包括用于产生压力脉冲的表面发射器，用于接收和解码脉冲的控制系统和井下接收器。 在操作中，旁通阀被打开和关闭以产生由井下接收器接收和解码的一系列压力脉冲。 该方法显着地减少下行链路通信所需的时间，而不会中断钻孔，而不会中断上行链路通信，以便如果以不同的频率发送上行链路和下行链路信号，则可以实现同时的双向通信。 遥测方案和算法提供了用于对下行链路信号进行滤波和解码的创新方法。 该算法确定脉冲峰值之间的时间间隔，并将间隔解码为指令。 该算法还包括用于验证指令是否正确接收到井下的错误检查。