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公开(公告)号：US09291505B2
公开(公告)日：2016-03-22
申请号：US13707979
申请日：2012-12-07
IPC分类号： G01B9/02 , G01J4/00 , G01N21/954 , G01D5/353
CPC分类号： G01J4/00 , G01D5/35316 , G01D5/35393 , G01N21/954
摘要： A system and method to obtain and process interferometer output scans is described. The interferometer-based sensor system includes a tunable laser to transmit a transmit signal and a polarization scrambler to produce a polarization state change on the transmit signal. The system also includes an interferometer to provide an output scan based on the transmit signal with the polarization state change and a processor to process the output scan.
摘要翻译： 描述了获得和处理干涉仪输出扫描的系统和方法。 基于干涉仪的传感器系统包括用于传输发射信号的可调谐激光器和偏振加扰器，以在发射信号上产生极化状态变化。 该系统还包括干涉仪，用于基于具有偏振态变化的发射信号和处理器来处理输出扫描来提供输出扫描。
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12.发明授权Optical network configuration with intrinsic delay for swept-wavelength interferometry systems 有权具有扫描波长干涉测量系统固有延迟的光网络配置公开(公告)号：US08797541B2
公开(公告)日：2014-08-05
申请号：US13180059
申请日：2011-07-11
IPC分类号： G01B9/02
CPC分类号： G01D5/35387 , G01D5/35367 , G01D5/35374
摘要： A method, apparatus and optical network for obtaining a signal from a sensor in a fiber optic cable at a downhole location is disclosed. A reference signal is propagated through the fiber optic cable. A beam of light is received from the fiber optic cable, wherein the beam of light includes the propagated reference signal and the signal from the sensor generated from an interaction of the sensor and the reference signal. The propagated reference signal is obtained from the received beam of light. The signal from the sensors is obtained by sampling the received beam of light using the obtained propagated reference signal.
摘要翻译： 公开了一种用于从位于井下位置处的光纤电缆中的传感器获得信号的方法，装置和光网络。 参考信号通过光纤传播。 从光纤电缆接收光束，其中光束包括传播的参考信号和来自传感器与参考信号的相互作用产生的来自传感器的信号。 从所接收的光束获得传播的参考信号。 通过使用获得的传播参考信号对接收的光束进行采样来获得来自传感器的信号。
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13.发明授权公开(公告)号：US09683902B2
公开(公告)日：2017-06-20
申请号：US13744044
申请日：2013-01-17
CPC分类号： G01K11/32 , G01K5/48 , Y10T29/49826
摘要： A temperature sensing arrangement includes a member having a first coefficient of thermal expansion, and an optical fiber having a second coefficient of thermal expansion. The optical fiber is strain transmissively mounted to the member. And the first coefficient of thermal expansion is greater than the second coefficient of thermal expansion such that strain measurable in the optical fiber is correlatable to temperature changes in the member.
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公开(公告)号：US20150146209A1
公开(公告)日：2015-05-28
申请号：US14525341
申请日：2014-10-28
CPC分类号： G01D5/35312 , E21B47/0002
摘要： An interferometer and a method of monitoring a downhole environment are described. The interferometer includes a coherent light source to emit pulses of light on a fiber, and a plurality of reflectors arranged on the fiber to reflect light from the coherent light source, each of the plurality of reflectors comprising broad band fiber Bragg gratings (FBGs), the fiber being rigidly disposed within a cable that is rigidly attached in the downhole environment. The interferometer also includes a processor to process a reflection signal resulting from the light reflected by two or more of the plurality of reflectors.
摘要翻译： 描述了干涉仪和监测井下环境的方法。 干涉仪包括相干光源，以在光纤上发射光脉冲，以及多个反射器，布置在光纤上以反射来自相干光源的光，多个反射器中的每一个包括宽带光纤布拉格光栅（FBG）， 该纤维刚性地设置在刚性地连接在井下环境中的电缆内。 所述干涉仪还包括处理器，用于处理由所述多个反射器中的两个或多个反射器反射的光产生的反射信号。
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公开(公告)号：US20140150548A1
公开(公告)日：2014-06-05
申请号：US13690324
申请日：2012-11-30
IPC分类号： G01V1/22
摘要： A method and system to perform distributed downhole acoustic sensing in a borehole are described. The system includes an optical fiber comprising at least one reflector, and a tunable laser configured to perform a transmission of a range of wavelengths through the optical fiber. The system also includes a receiver configured to receive an interferometer signal resulting from the transmission, and a processor configured to determine a component of the interferometer signal.
摘要翻译： 描述了在井眼中执行分布式井下声学感测的方法和系统。 该系统包括包括至少一个反射器的光纤和被配置为执行通过光纤的波长范围的透射的可调谐激光器。 该系统还包括被配置为接收由该传输产生的干涉仪信号的接收机以及被配置为确定该干涉仪信号的分量的处理器。
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16.发明授权Programmable filters for improving data fidelity in swept-wavelength interferometry-based systems 有权可编程滤波器，用于提高基于扫描波长干涉测量的系统中的数据保真度公开(公告)号：US08592747B2
公开(公告)日：2013-11-26
申请号：US13008979
申请日：2011-01-19
摘要： A method, system and apparatus for obtaining a parameter of interest from a plurality of sensors in a fiber optic cable deployed in a wellbore are disclosed. Light having variable frequency within a range of frequencies is propagated along the fiber optic cable. Signals are received that are responsive to interaction of the propagated light with the plurality of sensors. The received signals are filtered using a programmable filter. The parameter of interest is obtained from the filtered signals. In one aspect, the fiber optic cable is coupled to a member deployed in the wellbore and the parameter of interest is related to the member.
摘要翻译： 公开了一种用于从布置在井眼中的光纤电缆中的多个传感器获得感兴趣的参数的方法，系统和装置。 在频率范围内具有可变频率的光沿着光纤传播。 接收响应于传播的光与多个传感器的相互作用的信号。 使用可编程滤波器对接收到的信号进行滤波。 感兴趣的参数是从滤波信号中获得的。 在一个方面，光纤电缆耦合到部署在井眼中的构件，并且所关心的参数与构件有关。
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公开(公告)号：US20150048243A1
公开(公告)日：2015-02-19
申请号：US14322160
申请日：2014-07-02
CPC分类号： B29C71/00 , B29K2105/253 , B29K2995/0018 , B29K2995/0031 , B29L2011/00 , B29L2031/731 , B29L2031/752 , E21B47/123 , G01H9/004 , G01V1/226
摘要： An apparatus for estimating at least one parameter in a downhole environment includes: an optical fiber configured to be disposed in a borehole, the optical fiber having a property that causes intrinsic backscattering of signals transmitted therein. The property varies along a length of the optical fiber to generate a variable intensity of the backscattering, the intensity of backscattering varying along the optical fiber as a function of distance from an end of the optical fiber. The apparatus also includes a light source configured to send an optical signal into the optical fiber; and a detector configured to receive a return signal including backscattered signals.
摘要翻译： 一种用于估计井下环境中的至少一个参数的装置，包括：配置成设置在钻孔中的光纤，所述光纤具有导致其中传输的信号的固有后向散射的性质。 该特性随着光纤的长度而变化，以产生后向散射的可变强度，作为距离光纤端部的距离的函数，沿着光纤的后向散射强度变化。 该装置还包括配置成将光信号发送到光纤中的光源; 以及检测器，被配置为接收包括反向散射信号的返回信号。
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18.发明申请公开(公告)号：US20140198823A1
公开(公告)日：2014-07-17
申请号：US13744044
申请日：2013-01-17
IPC分类号： G01K11/32
CPC分类号： G01K11/32 , G01K5/48 , Y10T29/49826
摘要： A temperature sensing arrangement includes a member having a first coefficient of thermal expansion, and an optical fiber having a second coefficient of thermal expansion. The optical fiber is strain transmissively mounted to the member. And the second coefficient of thermal expansion is greater than the first coefficient of thermal expansion such that strain measurable in the optical fiber is correlatable to temperature changes in the member.
摘要翻译： 温度检测装置包括具有第一热膨胀系数的构件和具有第二热膨胀系数的光纤。 光纤是透射式安装在构件上的应变。 并且第二热膨胀系数大于第一热膨胀系数，使得光纤中可测量的应变与构件中的温度变化相关。
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公开(公告)号：US20140160483A1
公开(公告)日：2014-06-12
申请号：US13707979
申请日：2012-12-07
CPC分类号： G01J4/00 , G01D5/35316 , G01D5/35393 , G01N21/954
摘要： A system and method to obtain and process interferometer output scans is described. The interferometer-based sensor system includes a tunable laser to transmit a transmit signal and a polarization scrambler to produce a polarization state change on the transmit signal. The system also includes an interferometer to provide an output scan based on the transmit signal with the polarization state change and a processor to process the output scan.
摘要翻译： 描述了获得和处理干涉仪输出扫描的系统和方法。 基于干涉仪的传感器系统包括用于传输发射信号的可调谐激光器和偏振加扰器，以在发射信号上产生极化状态变化。 该系统还包括干涉仪，用于基于具有偏振态变化的发射信号和处理器来处理输出扫描来提供输出扫描。
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公开(公告)号：US20140158877A1
公开(公告)日：2014-06-12
申请号：US13711133
申请日：2012-12-11
CPC分类号： G01V8/02 , G01V13/00 , Y10T29/49002 , Y10T29/49826
摘要： An apparatus for estimating at least one parameter in a downhole environment includes: an optical fiber configured to be disposed in a borehole, the optical fiber including a core having a first index of refraction and a cladding surrounding the core and having a second index of refraction that is lower than the first index of refraction, at least a portion of the core being made from a hydrogen resistant material; at least one fiber Bragg grating (FBG) formed within the hydrogen resistant material; a light source configured to send an optical signal into the optical fiber; and a detector configured to receive a return signal generated by the at least one FBG and generate data representative of the at least one parameter.
摘要翻译： 一种用于估计井下环境中的至少一个参数的装置包括：配置成设置在钻孔中的光纤，所述光纤包括具有第一折射率的芯和围绕所述芯的包层，并具有第二折射率 低于第一折射率，芯的至少一部分由耐氢材料制成; 形成在耐氢材料内的至少一个光纤布拉格光栅（FBG）; 光源，被配置为将光信号发送到所述光纤中; 以及检测器，其被配置为接收由所述至少一个FBG生成的返回信号，并生成表示所述至少一个参数的数据。
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