TWO-TIER STREAMER COMMUNICATION SYSTEM
    3.
    发明申请
    TWO-TIER STREAMER COMMUNICATION SYSTEM 有权
    两级流动通信系统

    公开(公告)号:US20100245119A1

    公开(公告)日:2010-09-30

    申请号:US12410578

    申请日:2009-03-25

    CPC分类号: H04B3/36

    摘要: A two-tier communication system for a seismic streamer. The communication system operates over an unshielded twisted-pair communication line extending the length of the streamer. Repeater units having a repeater function and a device controller function divide the twisted pair into line segments. Coils on each segment couple signals inductively to collocated external devices in a low-speed 2400 baud FSK data link between the devices and an associated device controller. A Gaussian 8-level FSK high-speed 60 kbit/s data link is established along all the segments with the repeaters re-transmitting boosted signals along the entire length of the communication line. The coils are transparent at the high-speed data rate. Time division multiple access (TDMA) or frequency division multiple access (FDMA) is used to accommodate the two links on the single twisted pair.

    摘要翻译: 一种用于地震拖缆的双层通信系统。 通信系统通过延长拖缆长度的非屏蔽双绞线通信线路进行操作。 具有中继器功能的中继器单元和设备控制器功能将双绞线划分为线段。 每个段上的线圈在设备和相关设备控制器之间的低速2400波特FSK数据链路中感应地感应到并置的外部设备。 沿着所有段建立高斯8级FSK高速60kbit / s数据链路,中继器沿着通信线路的整个长度重新发送升压信号。 线圈在高速数据速率下是透明的。 时分多址(TDMA)或频分多址(FDMA)用于容纳单个双绞线上的两个链路。

    Seismic system with ghost and motion rejection
    4.
    发明授权
    Seismic system with ghost and motion rejection 有权
    地震系统与鬼和运动拒绝

    公开(公告)号:US08730766B2

    公开(公告)日:2014-05-20

    申请号:US13011358

    申请日:2011-01-21

    IPC分类号: G01V1/18 G01V1/20

    摘要: An underwater seismic system for reducing noise due to ghost reflections or motion through the water from seismic signals. The system includes two motion sensors. One sensor has a first response and is sensitive to platform-motion-induced noise as well as to acoustic waves. The other sensor has a different construction that isolates it from the acoustic waves so that its response is mainly to motion noise. The outputs of the two sensor responses are combined to remove the effects of motion noise. When further combined with a hydrophone signal, noise due to ghost reflections is reduced.

    摘要翻译: 一种水下地震系统,用于减少由地震信号引起的幽灵反射或水中运动的噪音。 该系统包括两个运动传感器。 一个传感器具有第一响应并对平台运动引起的噪声以及声波敏感。 另一种传感器具有不同的结构,将其与声波隔离,使得其响应主要是运动噪声。 组合两个传感器响应的输出以消除运动噪声的影响。 当与水听器信号进一步组合时,由于重影反射而引起的噪音降低。

    GPS-based underwater cable positioning system
    5.
    发明授权
    GPS-based underwater cable positioning system 有权
    基于GPS的水下电缆定位系统

    公开(公告)号:US07190634B2

    公开(公告)日:2007-03-13

    申请号:US10509703

    申请日:2003-05-22

    IPC分类号: G01V1/40

    摘要: A GPS-based underwater cable positioning system for use in determining the shape and position of hydrophone streamers towed underwater behind survey vessels involved in marine seismic prospecting. The system includes a plurality of surface units towed behind the vessel. Each surface unit includes a GPS receiver to receive radio frequency GPS signals and to determine its positions. Each surface unit also has an acoustic transmitter to transmit an acoustic message signal representing its position and an optional time stamp into the water. Acoustic receiver units, attached spaced apart locations along one or more streamer cables, each include an acoustic receiver to receive the acoustic message signals from the surface units and to determine its position from the message signals. To augment the message signals from the surface units at locations distant from the surface units, acoustic transceiver units may be used. The acoustic transceiver units are attached to the streamer cables at ranges between the surface units and distant acoustic receiver units. The acoustic transceiver units each include an acoustic receiver that performs as the receivers in the acoustic receiver units and an acoustic transmitter to transmit acoustic message signals representing its position and an optional time stamp into the water to be received by the acoustic receiver units. In this way, the positions and shapes of towed streamer cables can be determined.

    摘要翻译: 一种基于GPS的水下电缆定位系统,用于确定在涉及海洋地震勘探的测量船舶后方水下拖缆拖缆的形状和位置。 该系统包括拖在容器后面的多个表面单元。 每个表面单元包括接收射频GPS信号并确定其位置的GPS接收器。 每个表面单元还具有声发射器,以将表示其位置的声学信号信号和可选的时间戳传输到水中。 声学接收器单元,沿着一个或多个拖缆电缆连接的间隔开的位置,每个包括声接收器,用于接收来自表面单元的声学信号信号,并从消息信号确定其位置。 为了从远离地面单元的位置处的表面单元增加消息信号,可以使用声收发器单元。 声学收发器单元在表面单元和远程声学接收器单元之间的范围内连接到拖缆电缆。 声收发器单元各自包括作为声接收器单元中的接收器执行的声接收器,以及声发射器,用于将表示其位置的声消息信号和可选时间戳发送到要由声接收器单元接收的水中。 以这种方式,可以确定拖缆拖缆的位置和形状。

    Two-tier streamer communication system
    6.
    发明授权
    Two-tier streamer communication system 有权
    双层流网通信系统

    公开(公告)号:US08120507B2

    公开(公告)日:2012-02-21

    申请号:US12410578

    申请日:2009-03-25

    IPC分类号: H04L25/20 H04L5/14 H04B13/02

    CPC分类号: H04B3/36

    摘要: A two-tier communication system for a seismic streamer. The communication system operates over an unshielded twisted-pair communication line extending the length of the streamer. Repeater units having a repeater function and a device controller function divide the twisted pair into line segments. Coils on each segment couple signals inductively to collocated external devices in a low-speed 2400 baud FSK data link between the devices and an associated device controller. A Gaussian 8-level FSK high-speed 60 kbit/s data link is established along all the segments with the repeaters re-transmitting boosted signals along the entire length of the communication line. The coils are transparent at the high-speed data rate. Time division multiple access (TDMA) or frequency division multiple access (FDMA) is used to accommodate the two links on the single twisted pair.

    摘要翻译: 一种用于地震拖缆的双层通信系统。 通信系统通过延长拖缆长度的非屏蔽双绞线通信线路进行操作。 具有中继器功能的中继器单元和设备控制器功能将双绞线划分为线段。 每个段上的线圈在设备和相关设备控制器之间的低速2400波特FSK数据链路中感应地感应到并置的外部设备。 沿着所有段建立高斯8级FSK高速60kbit / s数据链路,中继器沿着通信线路的整个长度重新发送升压信号。 线圈在高速数据速率下是透明的。 时分多址(TDMA)或频分多址(FDMA)用于容纳单个双绞线上的两个链路。

    SEISMIC SYSTEM WITH GHOST AND MOTION REJECTION
    7.
    发明申请
    SEISMIC SYSTEM WITH GHOST AND MOTION REJECTION 有权
    地震系统与运动拒绝

    公开(公告)号:US20110182140A1

    公开(公告)日:2011-07-28

    申请号:US13011358

    申请日:2011-01-21

    IPC分类号: G01V1/38 G10K11/00

    摘要: An underwater seismic system for reducing noise due to ghost reflections or motion through the water from seismic signals. The system includes two motion sensors. One sensor has a first response and is sensitive to platform-motion-induced noise as well as to acoustic waves. The other sensor has a different construction that isolates it from the acoustic waves so that its response is mainly to motion noise. The outputs of the two sensor responses are combined to remove the effects of motion noise. When further combined with a hydrophone signal, noise due to ghost reflections is reduced.

    摘要翻译: 一种水下地震系统,用于减少由地震信号引起的幽灵反射或水中运动的噪音。 该系统包括两个运动传感器。 一个传感器具有第一响应并对平台运动引起的噪声以及声波敏感。 另一种传感器具有不同的结构,将其与声波隔离,使得其响应主要是运动噪声。 组合两个传感器响应的输出以消除运动噪声的影响。 当与水听器信号进一步组合时,由于重影反射而引起的噪音降低。

    Seismic streamer shape estimation
    8.
    发明授权
    Seismic streamer shape estimation 有权
    地震拖缆形状估计

    公开(公告)号:US08374053B2

    公开(公告)日:2013-02-12

    申请号:US12783374

    申请日:2010-05-19

    IPC分类号: G01V1/38

    CPC分类号: G01V1/3817

    摘要: A seismic streamer system and associated methods for estimating the shape of a laterally steered seismic streamer. The streamer is divided into a series of contiguous streamer segments by lateral-steering devices. Heading sensors positioned in forward and aft portions of each segment produce heading readings. Each segment is modeled as having a linear shape in the forward portion and a curved shape in the aft portion. The shape of the segment is estimated according to the model from the heading readings on the segment.

    摘要翻译: 一种用于估计侧向转向地震拖缆的形状的地震拖缆系统和相关方法。 拖缆由侧向转向装置分成一连串的连续拖缆段。 定位在每个段的前后部分的标题传感器产生航向读数。 每个段被建模为在前部具有线性形状并且在后部中具有弯曲形状。 该段的形状根据该段上的航向读数根据模型进行估计。

    DUAL-SENSOR NOISE-REDUCTION SYSTEM FOR AN UNDERWATER CABLE
    9.
    发明申请
    DUAL-SENSOR NOISE-REDUCTION SYSTEM FOR AN UNDERWATER CABLE 有权
    用于水下电缆的双传感器噪声减少系统

    公开(公告)号:US20110176385A1

    公开(公告)日:2011-07-21

    申请号:US13009287

    申请日:2011-01-19

    申请人: Dale J. Lambert

    发明人: Dale J. Lambert

    IPC分类号: G01V1/38 G01V1/36

    摘要: A system and a method for rejecting noise in an underwater sensor cable, such as a towed streamer or an ocean-bottom cable. An adaptive hydrodynamic model of the cable produces an estimated sensor signal from a raw sensor signal from a particle-motion sensor, such as an accelerometer. The estimated sensor signal represents an estimate of the response of the underwater cable to cable motion absent seismic events. A noise-reduced response to particle motion alone is produced by subtracting the estimated sensor signal from the raw sensor signal to reject cable motion and other noise effects in the raw sensor signal. A seismic event detector uses a hydrophone signal from an acceleration-canceling hydrophone to disable the adapting of the hydrodynamic model during seismic events. The hydrophone signal is combined with the response to particle motion by PZ summation to produce a deghosted seismic response signal.

    摘要翻译: 一种用于在水下传感器电缆(例如拖缆拖缆或海底电缆)中排除噪声的系统和方法。 电缆的自适应流体动力学模型从诸如加速度计的粒子运动传感器的原始传感器信号产生估计的传感器信号。 估计的传感器信号表示水下电缆对没有地震事件的电缆运动的响应的估计。 通过从原始传感器信号中减去估计的传感器信号来抑制原始传感器信号中的电缆运动和其他噪声影响,产生对粒子运动的噪声降低的响应。 地震事件检测器使用来自加速消除水听器的水听器信号来禁止在地震事件期间适应流体动力学模型。 水听器信号与通过PZ求和的颗粒运动的响应相结合,以产生消反主要的地震响应信号。

    Serviceable measuring device
    10.
    发明授权

    公开(公告)号:US5844152A

    公开(公告)日:1998-12-01

    申请号:US808210

    申请日:1997-02-28

    申请人: Dale J. Lambert

    发明人: Dale J. Lambert

    IPC分类号: G01N11/10 G01N33/34 G01D21/00

    CPC分类号: G01N11/10 G01N33/34

    摘要: A measuring device which maximizes the surface area of a blade transducer, which is swingably coupled to a probe member, and utilizes the force of the medium, such as a slurry, flowing in an in-service pipeline to swingably align the blade transducer in a desired measuring position. The swingable coupling of the blade transducer to the probe member provides for the retraction from and insertion into the medium flowing in the in-service pipeline for repairs, replacement, or sanitization or other maintenance or servicing of such blade transducer, without shutting down the pipeline and related processes, without compromising the integrity of or disturbing the connection (sealed, flanged, welded or otherwise) between the measuring device and the transducer port in such pipeline and significantly minimizing the environmental exposure of the medium. Moreover, the retractability feature of the swingable blade transducer enables other components of the measuring device to be replaced, repaired and sanitized or otherwise maintained or serviced, as desired.