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1. 发明授权

US06400646B1 Method for compensating for remote clock offset 有权
标题翻译：补偿远程时钟偏移的方法
公开(公告)号：US06400646B1
公开(公告)日：2002-06-04
申请号：US09457996
申请日：1999-12-09
申请人： Vimal V. Shah , John W. Minear , Robert Malloy , James R. Birchak , Wallace R. Gardner , Carl Robbins
发明人： Vimal V. Shah , John W. Minear , Robert Malloy , James R. Birchak , Wallace R. Gardner , Carl Robbins
IPC分类号： H04H900
CPC分类号： G01V1/26 , E21B47/16 , G04G7/00 , H04L7/007
摘要： A system is disclosed for synchronizing a clock in a well containing a drill string with a clock located near the surface of the well. The system includes devices for transmitting and receiving a pair of acoustic signals between locations associated with each clock and processing those signals. The system determines the time of arrival of each acoustic signal by analyzing the shape of a function of the acoustic signal chosen from a group of functions suitable to determine a clock offset with millisecond accuracy.
摘要翻译：公开了一种用于使包含钻柱的井中的时钟与位于井的表面附近的时钟同步的系统。该系统包括用于在与每个时钟相关联的位置之间发送和接收一对声信号并处理这些信号的装置。系统通过分析从适合于以毫秒精度确定时钟偏移的一组函数中选择的声信号的函数的形状来确定每个声信号的到达时间。

2. 发明申请

US20050012561A1 Downhole clock 有权
标题翻译：井下时钟
公开(公告)号：US20050012561A1
公开(公告)日：2005-01-20
申请号：US10622557
申请日：2003-07-18
申请人： David Young , Carl Robbins , Eugene Linyaev
发明人： David Young , Carl Robbins , Eugene Linyaev
IPC分类号： H03L1/02 , H03L1/04 , H03L1/00
CPC分类号： H03L1/04 , H03L1/022
摘要： A downhole crystal-based clock that is substantially insensitive to the factors that may cause frequency deviation as a result of downhole temperature. The clock may include a plurality of crystals, where a first crystal may be more stable, with respect to temperature, than a second crystal. The crystals may be thermally coupled together so that they may have substantially the same temperature. An error detector may monitor the differences between the frequencies associated with each crystal and provide this information to a storage device. This information may be determined prior to deploying the clock downhole. When deployed downhole, the signal from the error detector may be interpreted in light of the information in the storage device to provide a temperature measurement of the two crystals. The downhole temperature measurement then may be used to reduce frequency deviations in the downhole clock that may result from downhole temperatures.
摘要翻译：基于井下晶体的时钟，对由于井下温度可能引起频率偏差的因素基本上不敏感。时钟可以包括多个晶体，其中第一晶体相对于温度可以比第二晶体更稳定。晶体可以热耦合在一起，使得它们可以具有基本上相同的温度。误差检测器可以监视与每个晶体相关联的频率之间的差异，并将该信息提供给存储设备。该信息可以在井下部署时钟之前确定。当部署在井下时，来自误差检测器的信号可以根据存储装置中的信息来解释，以提供两个晶体的温度测量。然后可以使用井下温度测量来减少可能由井下温度引起的井下时钟的频率偏差。

3. 发明申请

US20060114746A1 Acoustic telemetry system using passband equalization 审中-公开
标题翻译：使用通带均衡的声学遥测系统
公开(公告)号：US20060114746A1
公开(公告)日：2006-06-01
申请号：US10998974
申请日：2004-11-29
申请人： Wallace Gardner , Vimal Shah , Carl Robbins
发明人： Wallace Gardner , Vimal Shah , Carl Robbins
IPC分类号： H04H9/00
CPC分类号： G01V11/002 , E21B47/16
摘要： An embodiment includes a method comprising receiving an acoustic signal that is modulated along a jointed tubing. The method also includes performing equalization over a passband of the acoustic signal to generate an equalized signal.
摘要翻译：一个实施例包括一种方法，包括接收沿着接合管道调制的声信号。该方法还包括在声信号的通带上执行均衡以产生均衡的信号。

4. 发明申请

US20050207277A1 Seismic acquisition system 有权
标题翻译：地震采集系统
公开(公告)号：US20050207277A1
公开(公告)日：2005-09-22
申请号：US10804669
申请日：2004-03-19
申请人： Darrell Gordy , Bruce Cornish , Denis Schmitt , Carl Robbins
发明人： Darrell Gordy , Bruce Cornish , Denis Schmitt , Carl Robbins
IPC分类号： G01V1/00 , G01V1/38
CPC分类号： G01V1/38
摘要： A seismic acquisition system comprising a remote-controlled buoy for conducting seismic acquisition operations. The buoy comprises an operating system for operating a seismic wave production device on the buoy, a placement system, a communications system, and dynamic position locating system. The seismic acquisition system also comprises a remote control system for controlling the buoy systems. The seismic acquisition system also comprises receivers for receiving the seismic wave and generating a data signal indicative of the received seismic wave. The seismic acquisition system operates by controlling the placement system with the remote control system to position the buoy and then controlling the operating system with the remote control system to produce a seismic wave from the seismic wave production device. The receivers then receive the seismic wave and generate a data signal indicative of the seismic wave. The time of producing the seismic wave as well as the position of the buoy at the time of production are then analyzed with the data signal by a data processor.
摘要翻译：一种地震采集系统，包括用于进行地震采集操作的遥控浮标。浮标包括用于在浮标上操作地震波生产装置的操作系统，放置系统，通信系统和动态位置定位系统。地震采集系统还包括用于控制浮标系统的遥控系统。地震采集系统还包括用于接收地震波并产生指示接收的地震波的数据信号的接收机。地震采集系统通过利用遥控系统控制放置系统来定位浮标，然后利用遥控系统控制操作系统，从地震波生产装置产生地震波。然后，接收器接收地震波并产生指示地震波的数据信号。然后用数据处理器用数据信号分析产生地震波的时间以及浮标在生产时的位置。

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