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公开(公告)号：US09170149B2
公开(公告)日：2015-10-27
申请号：US13221280
申请日：2011-08-30
申请人： Arthur Hartog , Kamal Kader
发明人： Arthur Hartog , Kamal Kader
IPC分类号： G01J1/42 , G01H9/00 , G02F1/295 , G02B6/10 , G02B26/10 , E21B41/00 , G01D5/353 , G01L1/24 , G01M11/08
CPC分类号： G01H9/004 , E21B41/00 , G01D5/35361 , G01L1/242 , G01M11/083 , G02B6/10 , G02B26/103 , G02F1/295 , G02F1/2955
摘要： A fiber optic sensor system includes an optical source to output a first optical signal to launch into an optical fiber, and a coherent detector to mix a coherent Rayleigh backscatter signal generated by the optical fiber in response to the first optical signal with a second optical signal output by the optical source and to generate a mixed output signal. A phase detection and acquisition system determines a phase difference between first and second locations along the optical fiber based on phase information extracted from the mixed output signal and combines the phase information extracted from multiple acquisitions to detect strain on the optical fiber sensor.
摘要翻译： 光纤传感器系统包括用于输出第一光信号以发射到光纤中的光源，以及相干检测器，用于响应于第一光信号与第二光信号混合由光纤产生的相干瑞利反向散射信号 由光源输出并产生混合输出信号。 相位检测和采集系统基于从混合输出信号提取的相位信息确定沿着光纤的第一和第二位置之间的相位差，并且组合从多个获取中提取的相位信息以检测光纤传感器上的应变。
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公开(公告)号：US20120067118A1
公开(公告)日：2012-03-22
申请号：US13221280
申请日：2011-08-30
申请人： Arthur Hartog , Kamal Kader
发明人： Arthur Hartog , Kamal Kader
CPC分类号： G01H9/004 , E21B41/00 , G01D5/35361 , G01L1/242 , G01M11/083 , G02B6/10 , G02B26/103 , G02F1/295 , G02F1/2955
摘要： A fiber optic sensor system includes an optical source to output a first optical signal to launch into an optical fiber, and a coherent detector to mix a coherent Rayleigh backscatter signal generated by the optical fiber in response to the first optical signal with a second optical signal output by the optical source and to generate a mixed output signal. A phase detection and acquisition system determines a phase difference between first and second locations along the optical fiber based on phase information extracted from the mixed output signal and combines the phase information extracted from multiple acquisitions to detect strain on the optical fiber sensor.
摘要翻译： 光纤传感器系统包括用于输出第一光信号以发射到光纤中的光源，以及相干检测器，用于响应于第一光信号与第二光信号混合由光纤产生的相干瑞利反向散射信号 由光源输出并产生混合输出信号。 相位检测和采集系统基于从混合输出信号提取的相位信息确定沿着光纤的第一和第二位置之间的相位差，并且组合从多个获取中提取的相位信息以检测光纤传感器上的应变。
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公开(公告)号：US20100107754A1
公开(公告)日：2010-05-06
申请号：US12611952
申请日：2009-11-04
申请人： Arthur H. Hartog , Douglas Miller , Kamal Kader , Gareth P. Lees , Graeme Hilton , Stephen Mullens
发明人： Arthur H. Hartog , Douglas Miller , Kamal Kader , Gareth P. Lees , Graeme Hilton , Stephen Mullens
IPC分类号： E21B47/14
CPC分类号： E21B47/123 , E21B47/101 , G01V1/226 , G01V1/44 , G01V8/16
摘要： A distributed acoustic wave detection system and method is provided. The system may include a fiber optic cable deployed in a well and configured to react to pressure changes resulting from a propagating acoustic wave and an optical source configured to launch interrogating pulses into the fiber optic cable. In addition, the system may include a receiver configured to detect coherent Rayleigh noise produced in response to the interrogating pulses. The CRN signal may be use to track the propagation of the acoustic wave in the well.
摘要翻译： 提供了一种分布式声波检测系统和方法。 系统可以包括部署在井中并被配置为对由传播声波引起的压力变化和被配置为向盘状光缆发射询问脉冲的光源的光纤电缆。 此外，系统可以包括被配置为检测响应于询问脉冲而产生的相干瑞利噪声的接收机。 CRN信号可以用于跟踪声波在井中的传播。
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公开(公告)号：US08408064B2
公开(公告)日：2013-04-02
申请号：US12611952
申请日：2009-11-04
申请人： Arthur H. Hartog , Douglas Miller , Kamal Kader , Gareth P. Lees , Graeme Hilton , Stephen Mullens
发明人： Arthur H. Hartog , Douglas Miller , Kamal Kader , Gareth P. Lees , Graeme Hilton , Stephen Mullens
CPC分类号： E21B47/123 , E21B47/101 , G01V1/226 , G01V1/44 , G01V8/16
摘要： A distributed acoustic wave detection system and method is provided. The system may include a fiber optic cable deployed in a well and configured to react to pressure changes resulting from a propagating acoustic wave and an optical source configured to launch interrogating pulses into the fiber optic cable. In addition, the system may include a receiver configured to detect coherent Rayleigh noise produced in response to the interrogating pulses. The CRN signal may be use to track the propagation of the acoustic wave in the well.
摘要翻译： 提供了一种分布式声波检测系统和方法。 系统可以包括部署在井中并被配置为对由传播声波引起的压力变化和被配置为向盘状光缆发射询问脉冲的光源的光纤电缆。 此外，系统可以包括被配置为检测响应于询问脉冲而产生的相干瑞利噪声的接收机。 CRN信号可以用于跟踪声波在井中的传播。
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公开(公告)号：US07668411B2
公开(公告)日：2010-02-23
申请号：US12134339
申请日：2008-06-06
申请人： Dylan Davies , Arthur H. Hartog , Kamal Kader
发明人： Dylan Davies , Arthur H. Hartog , Kamal Kader
IPC分类号： G02B6/00
CPC分类号： G01H9/004 , G01M11/3109
摘要： An optical time domain reflectometry (OTDR) system is configured to detect Rayleigh backscatter reflected from a multimode sensing optical fiber. The system includes a single spatial mode filtering system to select a single speckle of the Rayleigh backscatter produced in response to an optical pulse launched into the multimode fiber. The detected single speckle may be used for distributed disturbance (vibration) detection.
摘要翻译： 光时域反射测量（OTDR）系统被配置为检测从多模感测光纤反射的瑞利反向散射。 该系统包括单个空间模式滤波系统，用于响应于发射到多模光纤中的光脉冲而选择产生的瑞利反向散射的单个斑点。 检测到的单个斑点可用于分布式扰动（振动）检测。
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公开(公告)号：US20090304322A1
公开(公告)日：2009-12-10
申请号：US12134339
申请日：2008-06-06
申请人： Dylan Davies , Arthur H. Hartog , Kamal Kader
发明人： Dylan Davies , Arthur H. Hartog , Kamal Kader
IPC分类号： G02B6/00
CPC分类号： G01H9/004 , G01M11/3109
摘要： An optical time domain reflectometry (OTDR) system is configured to detect Rayleigh backscatter reflected from a multimode sensing optical fiber. The system includes a single spatial mode filtering system to select a single speckle of the Rayleigh backscatter produced in response to an optical pulse launched into the multimode fiber. The detected single speckle may be used for distributed disturbance (vibration) detection.
摘要翻译： 光时域反射测量（OTDR）系统被配置为检测从多模感测光纤反射的瑞利反向散射。 该系统包括单个空间模式滤波系统，用于响应于发射到多模光纤中的光脉冲而选择产生的瑞利反向散射的单个斑点。 检测到的单个斑点可用于分布式扰动（振动）检测。
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