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公开(公告)号：US09321222B2
公开(公告)日：2016-04-26
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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公开(公告)号：US08681322B2
公开(公告)日：2014-03-25
申请号：US13271852
申请日：2011-10-12
申请人： Alexander M. Barry , Roger Glen Duncan , Brooks A. Childers , Robert M. Harman , Daniel S. Homa , Ajit Balagopal , Philip Robin Couch
发明人： Alexander M. Barry , Roger Glen Duncan , Brooks A. Childers , Robert M. Harman , Daniel S. Homa , Ajit Balagopal , Philip Robin Couch
IPC分类号： G01C3/08
CPC分类号： G01S17/08 , E21B47/06 , E21B47/123 , G01L1/246 , G01S7/4818 , G01S17/88
摘要： A method for estimating a distance includes: generating an optical signal having a wavelength that is within a wavelength range, the optical signal modulated via a modulation signal having a modulation frequency; transmitting the modulated optical signal from a light source into the optical fiber, the optical fiber in contact with a moveable strain inducing element located at the position along the optical fiber, the optical fiber including a plurality of sensing locations configured to reflect light within the wavelength range when under strain from the strain inducing element and transmit light within the wavelength range when not under strain from the strain inducing element; receiving a reflected signal including light reflected from at least one of the sensing locations; demodulating the reflected signal with a reference signal to generate reflected signal data; and determining the distance to the position along the optical fiber based on the reflected signal data.
摘要翻译： 用于估计距离的方法包括：产生具有在波长范围内的波长的光信号，经由调制频率调制信号调制的光信号; 将来自光源的调制光信号传输到光纤中，该光纤与位于沿着光纤的位置处的可移动应变感应元件接触，该光纤包括被配置为反射波长内的光的多个感测位置 当应变诱发元件处于应变状态并且当不受应变诱发元件的应变时在波长范围内透射光; 接收包括从所述感测位置中的至少一个反射的光的反射信号; 用参考信号解调反射信号以产生反射信号数据; 以及基于反射信号数据确定沿着光纤的位置的距离。
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3.发明授权Enhancing functionality of reflectometry based systems using parallel mixing operations 有权使用并行混合操作增强基于反射计的系统的功能公开(公告)号：US09546915B2
公开(公告)日：2017-01-17
申请号：US13271683
申请日：2011-10-12
申请人： Roger Glen Duncan , Alexander M. Barry , Brooks A. Childers , Robert M. Harman , Philip Robin Couch
发明人： Roger Glen Duncan , Alexander M. Barry , Brooks A. Childers , Robert M. Harman , Philip Robin Couch
CPC分类号： G01K11/32 , G01D5/35354 , G01L1/242
摘要： A method for estimating a parameter includes: generating an optical signal, the optical signal modulated via a modulation signal; transmitting the modulated optical signal from a light source into an optical fiber, the optical fiber including a plurality of sensing locations disposed along the optical fiber and configured to reflect light; receiving a reflected signal including light reflected from the plurality of sensing locations; and combining, in parallel, each of a plurality of reference signals with the reflected signal to estimate a value of the parameter.
摘要翻译： 一种用于估计参数的方法包括：产生光信号，经由调制信号调制的光信号; 将调制的光信号从光源传输到光纤中，所述光纤包括沿着所述光纤布置并被配置为反射光的多个感测位置; 接收包括从所述多个检测位置反射的光的反射信号; 并且并行地将多个参考信号中的每一个与反射信号组合以估计该参数的值。
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4.发明申请FIBER OPTIC DISTRIBUTED ACOUSTIC MEASUREMENTS VIA FMCW INTERROGATION 审中-公开光纤分布式声学测量通过FMCW INTERROGATION公开(公告)号：US20150085610A1
公开(公告)日：2015-03-26
申请号：US14462804
申请日：2014-08-19
CPC分类号： G01V1/226 , G01V1/40 , G01V2210/1234
摘要： A system and method to obtain acoustic information from a borehole penetrating the earth are described. The system includes a light source to provide a continuous output beam and a modulator to modulate the continuous output beam with a modulation signal to provide a frequency modulated continuous wave (FMCW) to be sent out on an optical fiber disposed along the borehole, the optical fiber including a plurality of reflectors at known locations along the optical fiber. The system also includes a processor to process a light reflection signal from the optical fiber to determine the acoustic information.
摘要翻译： 描述从穿透地球的钻孔获得声学信息的系统和方法。 该系统包括用于提供连续输出光束的光源和用调制信号调制连续输出光束的调制器，以提供在沿钻孔设置的光纤上发送的调频连续波（FMCW），光学 光纤包括沿着光纤的已知位置处的多个反射器。 该系统还包括处理器，用于处理来自光纤的光反射信号以确定声学信息。
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公开(公告)号：US20130094011A1
公开(公告)日：2013-04-18
申请号：US13271852
申请日：2011-10-12
申请人： Alexander M. Barry , Roger Glen Duncan , Brooks A. Childers , Robert M. Harman , Daniel S. Homa , Ajit Balagopal , Philip Robin Couch
发明人： Alexander M. Barry , Roger Glen Duncan , Brooks A. Childers , Robert M. Harman , Daniel S. Homa , Ajit Balagopal , Philip Robin Couch
IPC分类号： G01C3/08
CPC分类号： G01S17/08 , E21B47/06 , E21B47/123 , G01L1/246 , G01S7/4818 , G01S17/88
摘要： A method for estimating a distance includes: generating an optical signal having a wavelength that is within a wavelength range, the optical signal modulated via a modulation signal having a modulation frequency; transmitting the modulated optical signal from a light source into the optical fiber, the optical fiber in contact with a moveable strain inducing element located at the position along the optical fiber, the optical fiber including a plurality of sensing locations configured to reflect light within the wavelength range when under strain from the strain inducing element and transmit light within the wavelength range when not under strain from the strain inducing element; receiving a reflected signal including light reflected from at least one of the sensing locations; demodulating the reflected signal with a reference signal to generate reflected signal data; and determining the distance to the position along the optical fiber based on the reflected signal data.
摘要翻译： 用于估计距离的方法包括：产生具有在波长范围内的波长的光信号，经由调制频率调制信号调制的光信号; 将来自光源的调制光信号传输到光纤中，该光纤与位于沿着光纤的位置处的可移动应变感应元件接触，该光纤包括被配置为反射波长内的光的多个感测位置 当应变诱发元件处于应变状态并且当不受应变诱发元件的应变时在波长范围内透射光; 接收包括从所述感测位置中的至少一个反射的光的反射信号; 用参考信号解调反射信号以产生反射信号数据; 以及基于反射信号数据确定沿着光纤的位置的距离。
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6.发明申请Optical Network Configuration with Intrinsic Delay for Swept-Wavelength Interferometry Systems 有权用于扫频波长干涉测量系统的具有固有延迟的光网络配置公开(公告)号：US20130016979A1
公开(公告)日：2013-01-17
申请号：US13180059
申请日：2011-07-11
IPC分类号： H04B10/12
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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7.发明申请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：US20120181420A1
公开(公告)日：2012-07-19
申请号：US13008979
申请日：2011-01-19
IPC分类号： G01V5/08
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筒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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8.发明申请Sensor Array Configuration for Swept-Wavelength Interferometric-Based Sensing Systems 有权基于扫描波长干涉测量系统的传感器阵列配置公开(公告)号：US20120175513A1
公开(公告)日：2012-07-12
申请号：US13004268
申请日：2011-01-11
IPC分类号： G01V5/04
摘要： A method, system and apparatus for obtaining a parameter of interest relating to a wellbore is disclosed. A fiber optic cable having a plurality of sensors is disposed in the wellbore, wherein the plurality of sensors have reflectivity values configured to provide improved signal-to-noise ratio compared to signal-to-noise ratio of a plurality of sensors having substantially same reflectivity values. Light is propagated into the fiber optic cable from a light source and signals are received at a detector from the plurality of sensors in response to interaction of the propagated light with the plurality of sensors. A processor may be used to obtain the parameter of interest from the received signals. The fiber optic cable may be coupled to a member in the wellbore, wherein the parameter of interest is related to the member.
摘要翻译： 公开了一种用于获得与井眼有关的参数的方法，系统和装置。 具有多个传感器的光缆被布置在井筒中，其中多个传感器具有反射率值，其被配置为提供与具有基本上相同反射率的多个传感器的信噪比相比提供的改善的信噪比 价值观。 光从光源传播到光纤电缆中，响应于传播的光与多个传感器的相互作用，信号在多个传感器的检测器处被接收。 可以使用处理器从接收到的信号获得感兴趣的参数。 光纤电缆可以耦合到井筒中的构件，其中感兴趣的参数与构件相关。
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公开(公告)号：US09784862B2
公开(公告)日：2017-10-10
申请号：US13690324
申请日：2012-11-30
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.
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公开(公告)号：US09410903B2
公开(公告)日：2016-08-09
申请号：US13271968
申请日：2011-10-12
IPC分类号： G01V3/00 , G01N21/954
CPC分类号： G01N21/954
摘要： A method for estimating a parameter includes: transmitting a control signal to a coherent optical source, the control signal configured to chaotically vary an output of the optical source and generate a chaotically excited optical signal; transmitting the optical signal from the optical source into an optical fiber, the optical fiber including at least one sensing location; receiving a reflected signal including light reflected from the at least one sensing location; and estimating a value of the parameter using the reflected signal.
摘要翻译： 一种用于估计参数的方法包括：将控制信号发送到相干光源，所述控制信号被配置为混沌地改变光源的输出并产生混沌激励的光信号; 将所述光信号从所述光源传输到光纤中，所述光纤包括至少一个感测位置; 接收包括从所述至少一个感测位置反射的光的反射信号; 以及使用所述反射信号估计所述参数的值。
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