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    • 3. 发明授权
    • Method for repeating messages in long intelligent completion system lines
    • 在长时间智能完成系统线路中重复消息的方法
    • US06798350B2
    • 2004-09-28
    • US10126802
    • 2002-04-19
    • Jorge O. MaxitIzhar AhmadDon A. HopmannDan CousinTerry A. Gibson
    • Jorge O. MaxitIzhar AhmadDon A. HopmannDan CousinTerry A. Gibson
    • G01V300
    • E21B47/12
    • A method for two-way communication for controlling production from a formation having at least one producing well and a plurality of producing zones. In one embodiment, the method comprises installing a flow control device with a controller proximate each of the producing zones, where each controller has a predetermined communication address, and each controller is adapted to act as a repeater on command from a surface controller; connecting each controller to a transmission bus where the transmission bus is connected to the surface controller; transmitting a command message from the surface controller to a predetermined downhole controller, where the command message determines a predetermined path along the transmission bus according to a predetermined protocol; receiving the command message by the predetermined controller; and executing the command message to control the flow control device. Transmitting a response message back along the predetermined path.
    • 一种用于控制从具有至少一个生产井和多个生产区的地层中的生产的双向通信的方法。 在一个实施例中,该方法包括在每个生产区附近安装具有控制器的流量控制装置,其中每个控制器具有预定的通信地址,并且每个控制器适于作为来自表面控制器的命令中继器; 将每个控制器连接到传输总线,其中传输总线连接到表面控制器; 从表面控制器发送命令消息到预定的井下控制器,其中命令消息根据预定协议确定沿着传输总线的预定路径; 由所述预定控制器接收所述命令消息; 并执行命令消息来控制流量控制装置。 沿预定路径发送回应消息。
    • 6. 发明授权
    • Carrierless amplitude and phase modulation telementry for use in
electric wireline well logging
    • 用于电缆测井的无载波幅度和相位调制远程监控
    • US5504479A
    • 1996-04-02
    • US473441
    • 1995-06-07
    • Mark R. DoyleFuling LiuJorge O. Maxit
    • Mark R. DoyleFuling LiuJorge O. Maxit
    • E21B47/12H04L25/49G01V1/00
    • H04L25/4921E21B47/122
    • An apparatus for communicating signals from a well logging tool to a recording unit is disclosed. The logging tool includes a transmitter comprising a source of digital bits representing measurements made by the tool, an encoder connected to the source of digital bits for transforming groups of the digital bits into multivalued symbols, a first in-phase filter and a first quadrature filter connected to the encoder so that first coordinates of the symbols are filtered in the in-phase filter, second coordinates of the symbols are filtered in the quadrature filter, the filters having responses forming a Hilbert transform pair, a digital subtractor connected to the first filters for calculating a difference between outputs of the filters, and a digital-to-analog converter connected to the output of the subtractor for generating signals to be communicated to the recording unit over a communication channel.The recording unit includes a receiver comprising an analog-to-digital converter to receive and digitize signals from the communication channel, a second in-phase filter and a second quadrature filter connected to the analog-to-digital converter, the second filters respectively having substantially the same response characteristics as the first in-phase and quadrature filters, a decision feedback equalizer connected to the second filters for correcting timing and distortion errors in the signals from the logging tool and demodulating the multivalued symbols, and a decoder connected to the equalizer for converting demodulated multivalued symbols output from the equalizer into the groups of bits conducted to the encoder in the logging tool.
    • 公开了一种用于将测井工具的信号传送到记录单元的装置。 记录工具包括发射机,包括表示由该工具进行的测量的数字位源;连接到数字位源的编码器,用于将数字位组的组变换为多值符号;第一同相滤波器和第一正交滤波器 连接到编码器,使得符号的第一坐标在同相滤波器中被滤波,符号的第二坐标在正交滤波器中被滤波,滤波器具有形成希尔伯特变换对的响应,连接到第一滤波器的数字减法器 用于计算滤波器的输出之间的差异,以及连接到减法器的输出的数模转换器,用于通过通信信道产生要传送到记录单元的信号。 记录单元包括一个接收机,包括一个模拟 - 数字转换器,用于接收和数字化来自通信信道的信号,第二同相滤波器和连接到模拟 - 数字转换器的第二正交滤波器,第二滤波器分别具有 与第一同相和正交滤波器基本相同的响应特性,连接到第二滤波器的判决反馈均衡器,用于校正来自测井工具的信号中的定时和失真误差并解调多值符号,以及连接到均衡器的解码器 用于将从均衡器输出的解调多值符号转换成在测井工具中传送到编码器的位组。
    • 8. 发明申请
    • SYSTEM AND METHOD FOR MEASURING RESISTIVITY PARAMETERS OF AN EARTH FORMATION
    • 用于测量地球形成电阻率参数的系统和方法
    • US20100114492A1
    • 2010-05-06
    • US12262330
    • 2008-10-31
    • Jinsong ZhaoJorge O. Maxit
    • Jinsong ZhaoJorge O. Maxit
    • G01V3/18G01V3/08G01V3/00
    • G01V3/24
    • Disclosed herein is a method of measuring a resistivity parameter of an earth formation. The method includes: applying a first electric measurement current including a first series of pulses to a first electrode and inducing a first formation current in the earth formation; applying a second electric measurement current including a second series of pulses to a second electrode and inducing a second formation current in the earth formation, the first series of pulses and the second series of pulses occupying distinct portions of a time domain in a selected time window; measuring the first measurement current, the first formation current, the second measurement current and the second formation current by coherent in-phase demodulation; and calculating at least one resistivity parameter by i) comparing the first measurement current to the first formation current and ii) comparing the second measurement current to the second formation current. A system for measuring a resistivity parameter of an earth formation is also provided.
    • 本文公开了一种测量地层电阻率参数的方法。 该方法包括:将包括第一系列脉冲的第一电测量电流施加到第一电极并且在地层中引起第一形成电流; 将包括第二系列脉冲的第二电测量电流施加到第二电极并且在地层中引起第二形成电流,所述第一脉冲序列和所述第二脉冲序列占据选定时间窗中的时域的不同部分 ; 通过相干同相解调测量第一测量电流,第一地层电流,第二测量电流和第二地层电流; 以及通过以下步骤来计算至少一个电阻率参数:i)将所述第一测量电流与所述第一形成电流进行比较,以及ii)将所述第二测量电流与所述第二形成电流进行比较。 还提供了一种用于测量地层电阻率参数的系统。