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    • 3. 发明授权
    • Method and apparatus for monitoring vibration using fiber optic sensors
    • 使用光纤传感器监测振动的方法和装置
    • US09200508B2
    • 2015-12-01
    • US12985773
    • 2011-01-06
    • Roger G. DuncanBrooks A. ChildersRobert M. HarmanAjit Balagopal
    • Roger G. DuncanBrooks A. ChildersRobert M. HarmanAjit Balagopal
    • G01V3/38E21B47/00E21B47/12
    • E21B47/0007E21B47/123
    • A apparatus for monitoring a downhole component is disclosed. The apparatus includes: an optical fiber sensor including a plurality of sensing locations distributed along a length of the optical fiber sensor; an interrogation assembly configured to transmit an electromagnetic interrogation signal into the optical fiber sensor and receive reflected signals from each of the plurality of sensing locations; and a processing unit configured to receive the reflected signals, select a measurement location along the optical fiber sensor, select a first reflected signal associated with a first sensing location in the optical fiber sensor, the first sensing location corresponding with the measurement location, select a second reflected signal associated with a second sensing location in the optical fiber sensor, estimate a phase difference between the first signal and the second signal, and estimate a parameter of the downhole component at the measurement location based on the phase difference.
    • 公开了一种用于监测井下部件的装置。 该装置包括:光纤传感器,包括沿着光纤传感器的长度分布的多个感测位置; 询问组件,被配置为将电磁询问信号传输到所述光纤传感器中,并接收来自所述多个感测位置中的每一个的反射信号; 以及处理单元,被配置为接收所述反射信号,选择沿着所述光纤传感器的测量位置,选择与所述光纤传感器中的第一感测位置相关联的第一反射信号,所述第一感测位置对应于所述测量位置, 与光纤传感器中的第二感测位置相关联的第二反射信号,估计第一信号和第二信号之间的相位差,并且基于相位差来估计测量位置处的井下分量的参数。
    • 5. 发明申请
    • METHOD AND APPARATUS FOR MONITORING VIBRATION USING FIBER OPTIC SENSORS
    • 使用光纤传感器监测振动的方法和装置
    • US20120179378A1
    • 2012-07-12
    • US12985773
    • 2011-01-06
    • Roger G. DuncanBrooks A. ChildersRobert M. HarmanAjit Balagopal
    • Roger G. DuncanBrooks A. ChildersRobert M. HarmanAjit Balagopal
    • G01V5/04G06F19/00
    • E21B47/0007E21B47/123
    • A apparatus for monitoring a downhole component is disclosed. The apparatus includes: an optical fiber sensor including a plurality of sensing locations distributed along a length of the optical fiber sensor; an interrogation assembly configured to transmit an electromagnetic interrogation signal into the optical fiber sensor and receive reflected signals from each of the plurality of sensing locations; and a processing unit configured to receive the reflected signals, select a measurement location along the optical fiber sensor, select a first reflected signal associated with a first sensing location in the optical fiber sensor, the first sensing location corresponding with the measurement location, select a second reflected signal associated with a second sensing location in the optical fiber sensor, estimate a phase difference between the first signal and the second signal, and estimate a parameter of the downhole component at the measurement location based on the phase difference.
    • 公开了一种用于监测井下部件的装置。 该装置包括:光纤传感器,包括沿着光纤传感器的长度分布的多个感测位置; 询问组件,被配置为将电磁询问信号传输到所述光纤传感器中,并接收来自所述多个感测位置中的每一个的反射信号; 以及处理单元,被配置为接收所述反射信号,选择沿着所述光纤传感器的测量位置,选择与所述光纤传感器中的第一感测位置相关联的第一反射信号,所述第一感测位置对应于所述测量位置, 与光纤传感器中的第二感测位置相关联的第二反射信号,估计第一信号和第二信号之间的相位差,并且基于相位差来估计测量位置处的井下分量的参数。