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21. 发明授权

US4992748A Period-inverting FM demodulator 失效
标题翻译：周期反相FM解调器
公开(公告)号：US4992748A
公开(公告)日：1991-02-12
申请号：US406582
申请日：1989-09-13
申请人： Michael F. Gard
发明人： Michael F. Gard
IPC分类号： H03D3/04
CPC分类号： H03D3/04
摘要： An FM discriminator (34) which independently recovers modulating information from each half-cycle of a modulated waveform (16) is disclosed. The discriminator (34) includes a comparison circuit (36-42, 80-82) which produces bipolar signals describing positive and negative half-cycles of the modulated waveform (16). These bipolar signals are de-glitched (80, 82, 52, 54) for respective positive and negative counter circuits (44p, 44n). Each of the counter circuits (44) includes a counter (58) which counts a high speed clock signal supplied by a clock generator (46) during one of the half-cycles to produce a period count that describes the duration of the half-cycle. During a subsequent half-cycle, a translation circuit (60) converts the period count into an amplitude value that describes the information modulated onto the modulated waveform (16), and a resetting circuit (64-68) presets the counter (58) to an initial value. The counter circuits each additionally include an optional D/A converter (70) to provide an analog signal. Analog signals from the positive and negative counter circuits (44p, 44n) are combined in a multiplexer (48) to supply a single analog reconstruction of the modulating information.
摘要翻译：公开了一种从调制波形（16）的每个半周期独立地恢复调制信息的FM鉴频器（34）。鉴别器（34）包括比较电路（36-42,80-82），其产生描述调制波形（16）的正半周期和负半周期的双极性信号。对于相应的正和负计数器电路（44p，44n），这些双极性信号被去毛刺（80,82,52,54）。每个计数器电路（44）包括计数器（58），计数器（58）在半个周期之一期间对由时钟发生器（46）提供的高速时钟信号进行计数，以产生描述半周期持续时间的周期计数。在随后的半周期期间，平移电路（60）将周期计数转换成描述调制到调制波形（16）上的信息的振幅值，并且复位电路（64-68）将计数器（58）预设为一个初始值。每个计数器电路还包括提供模拟信号的可选D / A转换器（70）。来自正和负计数器电路（44p，44n）的模拟信号被组合在多路复用器（48）中以提供调制信息的单个模拟重建。

22. 发明授权

US4906928A Transient electromagnetic apparatus with receiver having digitally controlled gain ranging amplifier for detecting irregularities on conductive containers 失效
标题翻译：具有接收器的瞬态电磁装置具有数字控制增益测距放大器，用于检测导电容器上的不规则性
公开(公告)号：US4906928A
公开(公告)日：1990-03-06
申请号：US291608
申请日：1988-12-29
申请人： Michael F. Gard
发明人： Michael F. Gard
IPC分类号： G01N27/00 , G01N27/20 , G01N27/90 , G01V3/08
CPC分类号： G01V3/08
摘要： A transient electromagnetic apparatus for use in detecting irregularities on conductive walls of containers forms a multichannel distributed system and includes at least one transmitting antenna, at least one transmitter unit, plural receiving antennas, plural receiver units, and a computer for controlling the transmitter and receiver units. The receiver units each include elements that suppress noise in the received signals. Each receiver unit has a preamplifier, first and second low pass Bessel type filters, a gain ranging amplifier, and an A/D converter. The gain ranging amplifier receives feedback from the output of the A/D converter and provides increased small signal resolution. Each receiver unit also rejects common mode noise with a choke and balanced input impedances in the preamplifier. The apparatus allows an arbitrary number of receiving antennas, receiver units, and even transmitting antennas, and transmitting units, so that the apparatus can be configured to a variety of containers. Each receiver unit has control logic for controlling the electronics therein and memory for storing data for transfer to the computer. The apparatus includes a median filter for filtering out sferics noise.

23. 发明授权

US4902981A Well casing potential measurement tool with compensated DC errors 失效
标题翻译：具有补偿直流误差的套管电位测量工具
公开(公告)号：US4902981A
公开(公告)日：1990-02-20
申请号：US283149
申请日：1988-12-09
申请人： Michael F. Gard , William P. Goodwill
发明人： Michael F. Gard , William P. Goodwill
IPC分类号： E21B41/02 , E21B47/00 , G01V3/22 , H03F1/30
CPC分类号： G01V3/22 , E21B41/02 , E21B47/00 , H03F1/303
摘要： A circuit for physical placement within an underground well to amplify low level differential DC voltage signals measured at a well casing is disclosed. The circuit incorporates an instrument amplifier with a first switching device before the amplifier and an inverter after the amplifier in the signal path. A second switching device selectively connects one of the amplifier and inverter outputs to a low-pass filter. The switching devices operate synchronously under control of an operating clock signal so that DC error terms associated with the amplifier are converted into a substantially AC error signal while maintaining the signal being amplified as a DC signal. The duty cycle of the operating clock signal is established to cause the substantially AC error signal to include a DC component of appropriate polarity and magnitude to compensate for DC error terms associated with the inverter and low-pass filter. The low-pass filter removes AC components, leaving an amplified DC output signal which is compensated for DC error terms of the circuit components. In addition, circuits for generating digital duration codes which define the operating clock signal duty cycle and which vary in accordance with environmental conditions are disclosed.
摘要翻译：公开了一种用于在井下进行物理放置的电路，用于放大在井套管测量的低电平差分直流电压信号。该电路包括放大器之前的第一开关器件的仪器放大器和信号通路中的放大器之后的反相器。第二开关器件选择性地将放大器和反相器输出之一连接到低通滤波器。开关装置在操作时钟信号的控制下同步工作，使得与放大器相关联的DC误差项被转换为基本上AC误差信号，同时保持信号被放大为DC信号。操作时钟信号的占空比被建立以使得基本上AC误差信号包括适当极性和幅度的DC分量，以补偿与逆变器和低通滤波器相关联的DC误差项。低通滤波器去除交流分量，留下放大的直流输出信号，补偿电路元件的直流误差项。此外，公开了用于产生定义工作时钟信号占空比并根据环境条件变化的数字持续时间码的电路。

24. 发明授权

US4891641A Method for transmitting data over logging cable 失效
标题翻译：通过测井电缆传输数据的方法
公开(公告)号：US4891641A
公开(公告)日：1990-01-02
申请号：US291568
申请日：1988-12-29
申请人： Michael F. Gard , Donald G. Kyle
发明人： Michael F. Gard , Donald G. Kyle
IPC分类号： E21B47/12
CPC分类号： E21B47/12
摘要： The present invention provides an improved method for transmitting logging data from a logging apparatus operating in a well borehole to surface equipment over a logging cable. The logging data has variations in amplitude, which are converted to a frequency-modulated signal. The center frequency of the frequency-modulated signal is relocated to a lower frequency, which is within the bandwidth of the logging cable. The frequency-modulated signal is transmitted over the logging cable and received by the surface equipment, where the logging data is reconstructed.
摘要翻译：本发明提供了一种改进的方法，用于将在钻井中操作的测井设备的测井数据传输到测井电缆上的地面设备。记录数据具有幅度变化，它们被转换成调频信号。频率调制信号的中心频率被重定位到较低频率，该频率在测井电缆的带宽内。频率调制信号通过测井电缆传输并由表面设备接收，其中重建测井数据。

25. 发明授权

US08833183B2 Method and system for monitoring bend and torque forces on a drill pipe 有权
标题翻译：用于监测钻杆上的弯曲和扭矩力的方法和系统
公开(公告)号：US08833183B2
公开(公告)日：2014-09-16
申请号：US13165418
申请日：2011-06-21
申请人： Dustin L. Blessum , Michael F. Gard , Kendall C. Young
发明人： Dustin L. Blessum , Michael F. Gard , Kendall C. Young
IPC分类号： G01L1/24 , G01B11/16
CPC分类号： G01L1/24 , G01B11/16
摘要： A system and method for monitoring bend radius and torque force exerted on a drill string. A sensor system is supported within a pipe section of the drill string and has a light source supported within the pipe section to emit a light beam within the pipe section. An optical sensing device is supported within the pipe section and spaced apart from the light source. The optical sensing device transmits a detection signal indicative of the position of the light beam on a surface of the optical sensing device to a processor that determines the bend radius and torque force exerted on the pipe section.
摘要翻译：用于监测施加在钻柱上的弯曲半径和扭矩力的系统和方法。传感器系统支撑在钻柱的管段中，并且具有支撑在管段内的光源，以在管段内发射光束。光学感测装置支撑在管道部分内并与光源隔开。光学传感装置将表示光学传感装置的表面上的光束的位置的检测信号发送到确定施加在管道部分上的弯曲半径和扭矩力的处理器。

26. 发明授权

US08497684B2 Dipole locator using multiple measurement points 有权
公开(公告)号：US08497684B2
公开(公告)日：2013-07-30
申请号：US12844886
申请日：2010-07-28
申请人： Scott B. Cole , Michael F. Gard , David R. Brown , Bradley S. Marshall
发明人： Scott B. Cole , Michael F. Gard , David R. Brown , Bradley S. Marshall
IPC分类号： G01V3/08
CPC分类号： G01V3/165 , E21B47/02224 , G01V3/081 , H01Q1/04 , H01Q7/00 , H01Q21/24
摘要： A receiver and tracking system for identifying a location of a magnetic field source. In a preferred embodiment a plurality of tri-axial antennas are positioned at three distinct points on a receiver frame. Each antenna detects a magnetic field from a source and a processor is used to determine a location of the source relative to the frame using the antenna signals. Each tri-axial antenna comprises three windings in each of three channels defined by a support structure. The windings each define an aperture area. The windings have substantially identical aperture areas and have a common center point. The receiver may to display to the operator the relative location of the field source or may direct the operator to a spot directly above the field source.

27. 发明申请

US20130057412A1 System For Wireless Communication Along A Drill String 审中-公开
标题翻译：用于钻杆无线通信的系统
公开(公告)号：US20130057412A1
公开(公告)日：2013-03-07
申请号：US13667474
申请日：2012-11-02
申请人： Michael F. Gard
发明人： Michael F. Gard
IPC分类号： G01V3/00
CPC分类号： G01V11/002 , E21B47/122
摘要： A wireless communication and drill string telemetry system. The communication system is used for communicating information along a drill string between a boring tool and a boring machine. An insulator assembly provides an electrically insulated gap between the drill string communication path and a soil engaging electrode for the electrical return path. A transmitter assembly includes a data transmitter for encoding and transmitting a data signal. A signal coupler couples the data signal to the drill string and provides a controlled electrical connection between the drill string communication path and the soil engaging electrode. The signal coupler comprises a transformer and a current regulating circuit to adjust a voltage across the transformer's primary winding. A receiver assembly is disposed proximate the drilling machine and includes a toroidal pickup coil and a signal processing assembly. The pickup coil has an annulus and is positioned such that the drill string communication path passes through the annulus. The pickup coil produces a signal voltage in response to a signal current on the drill string that the signal processing assembly processes to extract the data signal.
摘要翻译：无线通信和钻弦遥测系统。通信系统用于沿着钻孔工具和钻孔机之间的钻柱传送信息。绝缘体组件在钻柱连通路径和用于电返回路径的土壤接合电极之间提供电绝缘的间隙。发射器组件包括用于对数据信号进行编码和传输的数据发射器。信号耦合器将数据信号耦合到钻柱，并且在钻柱连通路径和土壤接合电极之间提供受控的电连接。信号耦合器包括变压器和电流调节电路，用于调整变压器初级绕组两端的电压。接收器组件设置在钻孔机附近并且包括环形拾取线圈和信号处理组件。拾取线圈具有环形并且被定位成使得钻柱连通路径穿过环形空间。拾取线圈响应于钻柱上的信号电流产生信号电压，信号处理组件处理以提取数据信号。

28. 发明申请

US20110298460A1 Method For Detection Of Signal Source Using Estimation Of Noise Statistics 有权
标题翻译：使用噪声统计估计的信号源检测方法
公开(公告)号：US20110298460A1
公开(公告)日：2011-12-08
申请号：US13210159
申请日：2011-08-15
申请人： Michael F. Gard , Scott Bryan Cole
发明人： Michael F. Gard , Scott Bryan Cole
IPC分类号： G01V3/00
CPC分类号： G01V3/15
摘要： A method for noise signal analysis and communication with an underground transmitter. The method comprises the steps of measuring a noise floor when no signal is transmitted from a transmitter, detecting a signal when the transmitter is transmitting, and estimating the noise free component of the signal by removing the noise floor measurement. The measurement of the noise floor and detecting the signal from the transmitter may be done using a root mean square technique. The noise floor measurement can be removed from the measured signal by subtracting the noise floor measurement from the measured signal or alternatively by calculating the square root of the difference between the square of the measured signal and the square of the noise floor measurement. The noise estimation technique may be used in connection with a differential phased shift keying communication scheme or other modulation techniques.
摘要翻译：一种用于噪声信号分析和与地下发射机通信的方法。该方法包括以下步骤：当没有信号从发射机发送时测量本底噪声，当发射机正在发射时检测信号，以及通过去除噪声基底测量来估计信号的无噪声分量。可以使用均方根技术来测量本底噪声和从发射机检测信号。通过从测量信号中减去噪声本底测量值，或者通过计算测量信号的平方和噪声本底测量的平方之间的差的平方根，可以从测量信号中去除噪声本底测量值。噪声估计技术可以结合差分相移键控通信方案或其他调制技术来使用。

29. 发明授权

US07786731B2 Dipole locator using multiple measurement points 有权
标题翻译：偶极定位器使用多个测量点
公开(公告)号：US07786731B2
公开(公告)日：2010-08-31
申请号：US11382644
申请日：2006-05-10
申请人： Scott B. Cole , Michael F. Gard , David R. Brown , Bradley S. Marshall
发明人： Scott B. Cole , Michael F. Gard , David R. Brown , Bradley S. Marshall
IPC分类号： G01V3/08
CPC分类号： G01V3/165 , E21B47/02224 , G01V3/081 , H01Q1/04 , H01Q7/00 , H01Q21/24
摘要： A receiver and tracking system for identifying a location of a magnetic field source. In a preferred embodiment a plurality of tri-axial antennas are positioned at three distinct points on a receiver frame. Each antenna detects a magnetic field from a source and a processor is used to determine a location of the source relative to the frame using the antenna signals. Each tri-axial antenna comprises three windings in each of three channels defined by a support structure. The windings each define an aperture area. The windings have substantially identical aperture areas and have a common center point. The receiver may to display to the operator the relative location of the field source or may direct the operator to a spot directly above the field source.
摘要翻译：用于识别磁场源的位置的接收器和跟踪系统。在优选实施例中，多个三轴天线位于接收机框架上的三个不同点处。每个天线检测来自源的磁场，并且处理器用于使用天线信号确定源相对于帧的位置。每个三轴天线包括由支撑结构限定的三个通道中的每一个中的三个绕组。绕组各限定孔径区域。绕组具有基本相同的孔径区域并且具有共同的中心点。接收器可以向操作者显示场源的相对位置，或者可以将操作者指向场源上方的位置。

30. 发明申请

US20090085406A1 Electric Horizontal Directional Drilling Machine System 有权
标题翻译：电动水平定向钻床系统
公开(公告)号：US20090085406A1
公开(公告)日：2009-04-02
申请号：US12330320
申请日：2008-12-08
申请人： Michael F. Gard
发明人： Michael F. Gard
IPC分类号： H02J1/00
CPC分类号： E21B3/02 , E21B7/046 , Y10T307/707
摘要： An electric horizontal directional drilling machine. An electric horizontal directional drilling machine is powered by an electric power assembly. The power assembly is made up of a fuel cell and inverter, or multiple fuel cells with synchronized inverters, are used to power an electric motor controller and electric motor. The electric motor operates hydraulic pumps used to advance a drill string and downhole tool through the earth and operate various machine functions. Mechanical functions of the drilling machine may also be satisfied through the use of electric rotary actuators (e.g., motors) and linear actuators (e.g., linear motors and solenoids).
摘要翻译：电动卧式定向钻机。电动水平定向钻机由电力组件供电。功率组件由燃料电池和逆变器组成，或者具有同步逆变器的多个燃料电池用于为电动机控制器和电动机供电。电动机操作用于将钻柱和井下工具推进通过地面的液压泵，并且操作各种机械功能。钻机的机械功能也可以通过使用电动旋转致动器（例如马达）和线性致动器（例如线性马达和螺线管）来实现。

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