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公开(公告)号：US20090016160A1
公开(公告)日：2009-01-15
申请号：US12170845
申请日：2008-07-10
IPC分类号： E21B47/18
CPC分类号： E21B47/18 , G01V11/002
摘要： Separation of telemetry and noise signals in a telemetry system is accomplished by modeling the system as one in which two sources are operating simultaneously. Direct and indirect implementations by IIR and FIR filters are discussed.
摘要翻译： 遥测系统中遥测和噪声信号的分离是通过将系统建模为两个源同时工作的系统来实现的。 讨论了IIR和FIR滤波器的直接和间接实现。
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公开(公告)号：US09726010B2
公开(公告)日：2017-08-08
申请号：US12170845
申请日：2008-07-10
CPC分类号： E21B47/18 , G01V11/002
摘要： The disclosure is directed to method and apparatus for communication through a fluid. The method includes measuring signals in the fluid at at least two spaced apart positions; estimating a subset of a separation matrix; and using the estimated subset and the signals to estimate a signal sent by the message source. The apparatus may include a message source on a bottom hole assembly; sensors disposed at least two spaced apart locations; and at least one processor configured to: estimate a subset of a separation matrix based on the signals and use the subset to estimate a message signal set by the message source.
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公开(公告)号：US08013756B2
公开(公告)日：2011-09-06
申请号：US11763712
申请日：2007-06-15
IPC分类号： H04H9/00
CPC分类号： E21B47/18 , E21B47/187 , G01V11/002
摘要： Measurements made with at least two sensors (flow rate or pressure) during generation of a message concurrently with operation of a noise source are used to estimate a channel transfer function. The estimated transfer function is then used to attenuate pump noise in a mud pulse telemetry system. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
摘要翻译： 使用与噪声源的操作同时产生消息期间用至少两个传感器（流量或压力）进行的测量来估计信道传递函数。 估计传递函数用于衰减泥浆脉冲遥测系统中的泵噪声。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。
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公开(公告)号：US20080002524A1
公开(公告)日：2008-01-03
申请号：US11763712
申请日：2007-06-15
IPC分类号： H04H9/00
CPC分类号： E21B47/18 , E21B47/187 , G01V11/002
摘要： Measurements made with at least two sensors (flow rate or pressure) during generation of a message concurrently with operation of a noise source are used to estimate a channel transfer function. The estimated transfer function is then used to attenuate pump noise in a mud pulse telemetry system. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
摘要翻译： 使用与噪声源的操作同时产生消息期间用至少两个传感器（流量或压力）进行的测量来估计信道传递函数。 估计传递函数用于衰减泥浆脉冲遥测系统中的泵噪声。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。
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7.发明授权Identification of the channel frequency response using chirps and stepped frequencies 有权使用啁啾声和阶跃频率识别信道频率响应公开(公告)号：US07453372B2
公开(公告)日：2008-11-18
申请号：US11284319
申请日：2005-11-21
申请人： Nabil Hentati , Hanno Reckmann , Ingolf Wassermann
发明人： Nabil Hentati , Hanno Reckmann , Ingolf Wassermann
IPC分类号： G01V1/00
CPC分类号： E21B47/18 , G01H15/00 , G01V1/003 , G01V11/002
摘要： The transfer function of the communication channel in a mud pulse telemetry system is determined by sending a known signal through the channel and spectral analysis of the received signal. The known signal may be a chirp signal or a stepped frequency signal. Based on the determined transfer function, operating parameters of the pulser are adjusted.
摘要翻译： 泥浆脉冲遥测系统中通信信道的传递函数是通过通过信道发送已知信号和接收信号的频谱分析来确定的。 已知的信号可以是啁啾信号或阶梯式频率信号。 根据确定的传递函数，调整脉冲发生器的运行参数。
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8.发明申请Identification of the channel frequency response using chirps and stepped frequencies 有权使用啁啾声和阶跃频率识别信道频率响应公开(公告)号：US20060114747A1
公开(公告)日：2006-06-01
申请号：US11284319
申请日：2005-11-21
申请人： Nabil Hentati , Hanno Reckmann , Ingolf Wassermann
发明人： Nabil Hentati , Hanno Reckmann , Ingolf Wassermann
CPC分类号： E21B47/18 , G01H15/00 , G01V1/003 , G01V11/002
摘要： The transfer function of the communication channel in a mud pulse telemetry system is determined by sending a known signal through the channel and spectral analysis of the received signal. The known signal may be a chirp signal or a stepped frequency signal. Based on the determined transfer function, operating parameters of the pulser are adjusted.
摘要翻译： 泥浆脉冲遥测系统中通信信道的传递函数是通过通过信道发送已知信号和接收信号的频谱分析来确定的。 已知的信号可以是啁啾信号或阶梯式频率信号。 根据确定的传递函数，调整脉冲发生器的运行参数。
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公开(公告)号：US20070189119A1
公开(公告)日：2007-08-16
申请号：US11674938
申请日：2007-02-14
申请人： Christian Klotz , Hanno Reckmann , Ingolf Wassermann , John D. Macpherson , Jose Alonso Ortiz , Andrew G. Brooks
发明人： Christian Klotz , Hanno Reckmann , Ingolf Wassermann , John D. Macpherson , Jose Alonso Ortiz , Andrew G. Brooks
IPC分类号： H04H9/00
CPC分类号： E21B47/18
摘要： A system for transmitting information in a well comprises a tubular string disposed in the well and having a drilling fluid flowing therethrough. A pulser is disposed in the tubular string and transmits a pulse synchronization marker comprising a chirp signal. A surface controller, acting under programmed instructions, detects the chirp signal adjusts a signal decoding technique based on the detected chirp signal.
摘要翻译： 用于在井中传送信息的系统包括设置在井中并具有流过其中的钻井流体的管状柱。 脉冲发生器设置在管状串中并且传输包括啁啾信号的脉冲同步标记。 在编程指令下运行的表面控制器检测啁啾信号基于检测到的线性调频信号调整信号解码技术。
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公开(公告)号：US20070132606A1
公开(公告)日：2007-06-14
申请号：US11675025
申请日：2007-02-14
申请人： Hanno Reckmann , Ingolf Wassermann
发明人： Hanno Reckmann , Ingolf Wassermann
IPC分类号： G01V3/00
CPC分类号： E21B47/18 , G01V11/002
摘要： Channel estimation and signal equalization is used in a mud-pulse telemetry system for uplink communication during drilling of wellbores.
摘要翻译： 信道估计和信号均衡用于钻井中的上行链路通信的泥浆脉冲遥测系统。
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