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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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2.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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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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公开(公告)号：US20130093599A1
公开(公告)日：2013-04-18
申请号：US13271968
申请日：2011-10-12
IPC分类号： G01V3/12
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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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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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：US20150177411A1
公开(公告)日：2015-06-25
申请号：US14138972
申请日：2013-12-23
IPC分类号： G01V8/16
CPC分类号： G01V8/16 , E21B47/06 , E21B47/09 , E21B47/123 , G01D5/35316 , G01J3/10 , G01K11/3206 , G01K2011/322 , G01L1/246 , G01L11/025 , G01N2201/088 , G01N2201/0886 , G01V8/00 , G01V8/10 , G01V8/12 , G02B6/02 , G02B6/02057 , G02B6/02076 , G02B6/02347
摘要： A method for estimating an environmental parameter includes transmitting a first interrogation signal into an optical fiber, receiving a reflected return signal including light reflected from one or more of the plurality of FBG's in the fiber and receiving at a processor data describing the reflected return signal. The received data is comparted to expected data to determine a shift in wavelength of light reflected for one or more of the plurality of FBGs and a change in a length of a dead zone of the optical fiber based on the comparison is also determined. From this, estimates of locations two or more of the plurality of FBG's are formed.
摘要翻译： 一种用于估计环境参数的方法包括将第一询问信号发送到光纤中，接收包括从光纤中的多个FBG中的一个或多个反射的光的反射的返回信号，并且以描述反射的返回信号的处理器数据进行接收。 接收到的数据被分配到期望数据以确定针对多个FBG中的一个或多个的反射的光的偏移，并且还确定基于该比较的光纤的死区长度的变化。 由此，形成多个FBG中的两个以上的位置的估计。
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公开(公告)号：US10429542B2
公开(公告)日：2019-10-01
申请号：US14138972
申请日：2013-12-23
IPC分类号： G01V8/16 , G01L1/24 , G01V8/00 , G01V8/12 , G01V8/10 , G02B6/02 , E21B47/06 , G01K11/32 , G01J3/10 , E21B47/12 , G01D5/353 , G01L11/02 , E21B47/09
摘要： A method for estimating an environmental parameter includes transmitting a first interrogation signal into an optical fiber, receiving a reflected return signal including light reflected from one or more of the plurality of FBG's in the fiber and receiving at a processor data describing the reflected return signal. The received data is comparted to expected data to determine a shift in wavelength of light reflected for one or more of the plurality of FBGs and a change in a length of a dead zone of the optical fiber based on the comparison is also determined. From this, estimates of locations two or more of the plurality of FBG's are formed.
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9.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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