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    • 3. 发明申请
    • STRAIN LOCKED FIBER OPTIC CABLE AND METHODS OF MANUFACTURE
    • 应变锁定光纤电缆及其制造方法
    • US20160040527A1
    • 2016-02-11
    • US14792944
    • 2015-07-07
    • Ajit BalagopalJuan P. FrancoPaul F. Wysocki
    • Ajit BalagopalJuan P. FrancoPaul F. Wysocki
    • E21B47/12
    • E21B47/123G02B6/4413G02B6/4415G02B6/4435
    • An embodiment of a method of manufacturing a fiber optic cable includes selecting a cable support structure configured to support an optical fiber sensor, adhering the optical fiber sensor to the cable support structure by applying a temporary adhesive, and installing a protective layer around the cable support structure and the temporarily adhered optical fiber sensor. The method further includes removing a bond between the optical fiber sensor and the temporary adhesive, wherein removing the bond includes injecting a debonding material into a space formed between the cable support structure and the protective layer, and injecting a permanent adhesive into the space, the permanent adhesive configured to immobilize the optical fiber sensor relative to the protective layer and allow strain to be transferred from the protective layer to the optical fiber sensor.
    • 制造光纤电缆的方法的一个实施例包括选择配置成支撑光纤传感器的电缆支撑结构,通过施加临时粘合剂将光纤传感器粘附到电缆支撑结构,以及在电缆支架周围安装保护层 结构和临时粘贴的光纤传感器。 该方法还包括去除光纤传感器和临时粘合剂之间的接合,其中去除接合包括将脱粘材料注入到形成在电缆支撑结构和保护层之间的空间中,以及将永久性粘合剂注入到该空间中, 永久性粘合剂被配置为相对于保护层固定光纤传感器,并且允许应变从保护层转移到光纤传感器。
    • 10. 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。