Method and apparatus of measuring ultrasonic time travel information
obtained from logging operations in a well borehole
    21.
    发明授权
    Method and apparatus of measuring ultrasonic time travel information obtained from logging operations in a well borehole 失效
    测量井眼中测井作业获得的超声时间旅行信息的方法和装置

    公开(公告)号:US4930109A

    公开(公告)日:1990-05-29

    申请号:US291633

    申请日:1988-12-29

    申请人: Donald G. Kyle

    发明人: Donald G. Kyle

    IPC分类号: G01V1/50

    CPC分类号: G01V1/50

    摘要: A method for measuring time of travel information of an acoustic return obtained from borehole logging operations avoids the phenomena of cycle skipping. The time of travel is determined from a threshold travel time and a digitization travel time. The threshold travel time is measured from the generated acoustic waveform to the detected threshold level of the acoustic return. The digitization travel time is measured from the threshold travel time to the time of the peak amplitude of the acoustic return.

    摘要翻译: 用于测量从井眼测井操作获得的声学返回的旅行信息时间的方法避免了循环跳过现象。 旅行时间由阈值旅行时间和数字化旅行时间确定。 阈值行进时间是从产生的声波形到检测到的声学返回的阈值水平进行测量的。 数字化行进时间是从阈值行进时间到声音返回的峰值振幅的时间测量的。

    RECEIVER FOR AN ACOUSTIC TELEMETRY SYSTEM
    24.
    发明申请
    RECEIVER FOR AN ACOUSTIC TELEMETRY SYSTEM 审中-公开
    接收器用于声学电报系统

    公开(公告)号:US20080137481A1

    公开(公告)日:2008-06-12

    申请号:US11945055

    申请日:2007-11-26

    IPC分类号: E21B47/16 G01V1/40

    CPC分类号: E21B47/16 E21B47/12 E21B47/14

    摘要: One embodiment includes a method comprising receiving an acoustic signal that is propagated along a drill string. The method also includes correlating the acoustic signal to a first stored acoustic signal representing a first symbol, wherein the first stored acoustic signal is acquired from a propagation along the drill string in an approximately noise free environment.

    摘要翻译: 一个实施例包括一种方法,包括接收沿着钻柱传播的声信号。 该方法还包括将声学信号与表示第一符号的第一存储的声学信号相关联,其中,在大致无噪声的环境中,沿着钻柱的传播获取第一存储的声学信号。

    Receiver for an acoustic telemetry system
    25.
    发明授权
    Receiver for an acoustic telemetry system 有权
    用于声学遥测系统的接收器

    公开(公告)号:US07301473B2

    公开(公告)日:2007-11-27

    申请号:US10925267

    申请日:2004-08-24

    IPC分类号: G01V3/00

    CPC分类号: E21B47/16 E21B47/12 E21B47/14

    摘要: One embodiment includes a method comprising receiving an acoustic signal that is propagated along a drill string. The method also includes correlating the acoustic signal to a first stored acoustic signal representing a first symbol, wherein the first stored acoustic signal is acquired from a propagation along the drill string in an approximately noise free environment.

    摘要翻译: 一个实施例包括一种方法,包括接收沿着钻柱传播的声信号。 该方法还包括将声学信号与表示第一符号的第一存储的声学信号相关联,其中,在大致无噪声的环境中,沿着钻柱的传播获取第一存储的声学信号。

    Pressure change signals for remote control of downhole tools
    26.
    发明授权
    Pressure change signals for remote control of downhole tools 失效
    用于井下工具远程控制的压力变化信号

    公开(公告)号:US5355960A

    公开(公告)日:1994-10-18

    申请号:US993260

    申请日:1992-12-18

    IPC分类号: E21B34/10 E21B34/16

    CPC分类号: E21B34/16 E21B34/102

    摘要: Methods of controlling a downhole tool in a well are disclosed wherein pressure change signals are introduced into a column of fluid standing in the well. The command signal includes at least one high level pressure change applied to the column of fluid. The high level pressure change includes a change from a first value to a second value, with the second value being at least about 1,000 psi above hydrostatic pressure of the column of fluid in the well, and with pressure being maintained at the second value for an interval of time corresponding to information stored in a control system of the downhole valve. A number of suitable command signal formats are disclosed, particularly including pressure drop signals.

    摘要翻译: 公开了一种控制井中井下工具的方法,其中将压力变化信号引入到井中的流体柱中。 命令信号包括施加到流体列的至少一个高压变化。 高水平压力变化包括从第一值到第二值的变化,其中第二值比井中流体柱的静水压力至少大约1,000psi,并且压力保持在第二值 时间间隔对应于存储在井下阀控制系统中的信息。 公开了许多合适的命令信号格式,特别地包括压降信号。

    Surface instrumentation configuration for drilling rig operation
    27.
    发明授权
    Surface instrumentation configuration for drilling rig operation 有权
    钻机操作的表面仪表配置

    公开(公告)号:US08132622B2

    公开(公告)日:2012-03-13

    申请号:US13026450

    申请日:2011-02-14

    IPC分类号: E21B47/14

    CPC分类号: G01V1/52 E21B47/16

    摘要: Methods and systems for a surface instrumentation configuration for drilling rig-related operations are described. In one embodiment, pack off material is positioned in an annulus between a casing along sides of a borehole and a drill tubing in the borehole, wherein the pack off material includes surface instrumentation with an acoustic receiver. The acoustic receiver receives acoustic signals transmitted from the downhole instrumentation.

    摘要翻译: 描述了用于钻机相关操作的表面仪表配置的方法和系统。 在一个实施例中,包装材料被定位在沿钻孔侧面的壳体和钻孔中的钻管之间的环形空间中,其中包装材料包括具有声学接收器的表面仪器。 声学接收器接收从井下仪器传输的声信号。

    Surface instrumentation configuration for drilling rig operation
    29.
    发明授权
    Surface instrumentation configuration for drilling rig operation 有权
    钻机操作的表面仪表配置

    公开(公告)号:US07886817B2

    公开(公告)日:2011-02-15

    申请号:US12206282

    申请日:2008-09-08

    IPC分类号: E21B47/14

    CPC分类号: G01V1/52 E21B47/16

    摘要: One embodiment includes an apparatus comprising a pack off material to be positioned in an annulus between a casing along sides of a borehole and a drill tubing in the borehole. The pack off material further includes surface instrumentation for communication with downhole instrumentation.

    摘要翻译: 一个实施例包括一种装置,其包括待置于沿着钻孔侧面的壳体之间的环形空间中的包装材料和钻孔中的钻管。 包装材料还包括用于与井下仪器通信的表面仪器。