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1.发明授权Combined swept-carrier and swept-modulation frequency optical frequency domain reflectometry 有权组合扫频载波和扫频调制频率光频域反射测量公开(公告)号：US09267821B2
公开(公告)日：2016-02-23
申请号：US12695613
申请日：2010-01-28
CPC分类号： G01D5/35316 , G01D5/35387 , G01M11/3172
摘要： An apparatus for estimating a parameter, the apparatus includes: an optical fiber; a component in communication with the optical fiber and configured to interact with light at a wavelength related to the parameter; and an optical interrogator in communication with the optical fiber and configured to: illuminate the optical fiber with a series of light inputs, each light input in the series having a substantially constant unique optical wavelength and swept-frequency amplitude modulation; and receive a resulting light signal associated with each light input in the series; wherein the resulting light signals associated with the series of light inputs are used to estimate the parameter.
摘要翻译： 一种用于估计参数的装置，所述装置包括：光纤; 与所述光纤通信并被配置成与所述参数相关的波长的光相互作用的部件; 以及光学询问器，其与所述光纤通信并且被配置为：用一系列光输入照射所述光纤，所述串联中的每个光输入具有基本上恒定的唯一光波长和扫频振幅调制; 并接收与该系列中的每个光输入相关联的结果光信号; 其中与所述一系列光输入相关联的所得光信号用于估计所述参数。
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公开(公告)号：US09063315B2
公开(公告)日：2015-06-23
申请号：US14035328
申请日：2013-09-24
CPC分类号： G02B6/4429 , E21B47/123 , G01D5/35361 , G01L1/242 , G01M11/083 , G02B6/4402 , G02B6/4415
摘要： An optical cable includes an outer tubing. At least one optical fiber disposed within the outer tubing. A stiffening member configured to bend with bending of the outer tubing; wherein the stiffening member shifts a neutral plane of the cable away from the at least one optical fiber. Also included is a method of increasing a bending sensitivity in an optical cable.
摘要翻译： 光缆包括外管。 设置在外管内的至少一根光纤。 配置成弯曲外管弯曲的加强构件; 其中所述加强构件将所述电缆的中性平面偏离所述至少一个光纤。 还包括提高光缆中的弯曲灵敏度的方法。
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公开(公告)号：US08508747B2
公开(公告)日：2013-08-13
申请号：US12706796
申请日：2010-02-17
IPC分类号： G01B9/02
CPC分类号： G01B11/18 , G01B9/02069 , G01B2290/60
摘要： Systems and methods for providing trigger signals in an optical interrogator, wherein multiple triggers are generated within each period of a varying reference signal, and wherein the triggers are evenly spaced according to the wavenumber of the reference signal. In one embodiment, an optical frequency domain reflectometry system provides a laser beam to a reference interferometer to produce a reference signal. This signal is passed through a 4×4 optical coupler which splits the signal into a first signal and a second signal that is 90 degrees out of phase with the first signal. These signals are converted to electrical signals, and a trigger unit generates triggers at points at which the two electrical signals have zero-crossings, and at which the magnitudes of the signals are equal. The resulting triggers remain evenly spaced within the period of the reference signals, even when the period is changed.
摘要翻译： 用于在光学询问器中提供触发信号的系统和方法，其中在变化的参考信号的每个周期内产生多个触发，并且其中触发器根据参考信号的波数均匀间隔。 在一个实施例中，光频域反射系统将激光束提供给参考干涉仪以产生参考信号。 该信号通过4×4光耦合器，该信号将信号分成第一信号和与第一信号相差90度的第二信号。 这些信号被转换成电信号，并且触发单元在两个电信号具有过零点的位置处产生触发信号，并且信号的幅度在此相等。 所产生的触发信号在参考信号的周期内保持均匀间隔，即使在周期变化时也是如此。
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公开(公告)号：US08474782B2
公开(公告)日：2013-07-02
申请号：US12767607
申请日：2010-04-26
申请人： David Dixon , Robert M. Harman , Roger G. Duncan , Alan C. Reynolds , Michael C. Nuckles , Brooks A. Childers
发明人： David Dixon , Robert M. Harman , Roger G. Duncan , Alan C. Reynolds , Michael C. Nuckles , Brooks A. Childers
CPC分类号： F16F15/04 , G01B9/02052 , G01M11/088 , G01M11/31 , G01M11/3172
摘要： An interferometer has its performance enhanced by being suspended in a housing that is optionally evacuated. The frame that supports the interferometer is secured to a cover for the housing with a plurality of studs having mechanical vibration isolators. The frame comprises a support flange with a foam layer beneath the interferometer. An optics tray is disposed above the interferometer and holds the assembly to the support flange. The fibers that are connected to the interferometer enter the side of the housing and the entry is sealed off to allow the interior of the housing to be evacuated.
摘要翻译： 干涉仪的性能通过悬挂在可选择地抽出的壳体中而被增强。 支撑干涉仪的框架用多个具有机械隔振器的螺柱固定到壳体的盖上。 框架包括在干涉仪下方具有泡沫层的支撑凸缘。 光学托盘设置在干涉仪上方并将组件保持在支撑凸缘上。 连接到干涉仪的光纤进入壳体的侧面，密封入口以使壳体的内部被排空。
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5.发明申请SYSTEM AND METHOD TO COMPENSATE FOR ARBITRARY OPTICAL FIBER LEAD-INS IN AN OPTICAL FREQUENCY DOMAIN REFLECTOMETRY SYSTEM 审中-公开用于补偿光学频域反射测量系统中的光纤光栅的系统和方法公开(公告)号：US20120237205A1
公开(公告)日：2012-09-20
申请号：US13049357
申请日：2011-03-16
申请人： Roger G. Duncan , Alexander M. Barry , Brooks A. Childers , Ajit Balagopal , Philip Robin Couch
发明人： Roger G. Duncan , Alexander M. Barry , Brooks A. Childers , Ajit Balagopal , Philip Robin Couch
IPC分类号： H04B10/08
CPC分类号： E21B47/0006 , E21B47/123 , G01D5/35354
摘要： A method for estimating a parameter includes: generating an optical signal, the optical signal modulated via a modulation signal having a variable modulation frequency over a period of time; transmitting the modulated optical signal from a light source into an optical fiber, the optical fiber including at least one sensing location configured to reflect light; receiving a reflected signal including light reflected from the at least one sensing location; and demodulating the reflected signal with a reference signal, the reference signal including a time delay relative to the modulation signal based on a distance between the light source and the at least one sensing location.
摘要翻译： 一种用于估计参数的方法包括：产生光信号，经由一段时间具有可变调制频率的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，所述光纤包括被配置为反射光的至少一个感测位置; 接收包括从所述至少一个感测位置反射的光的反射信号; 以及用参考信号解调所述反射信号，所述参考信号包括基于所述光源和所述至少一个感测位置之间的距离的相对于所述调制信号的时间延迟。
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6.发明授权Sensor array configuration for extending useful sensing length of a swept-wavelength interferometry based system 有权传感器阵列配置，用于延长基于扫描波长干涉测量的系统的有用感测长度公开(公告)号：US08208767B2
公开(公告)日：2012-06-26
申请号：US12615642
申请日：2009-11-10
CPC分类号： G01L1/246 , E21B47/06 , E21B47/123 , G01D5/35303 , G01K11/3206 , G01N2201/088 , G01V1/226
摘要： An apparatus for estimating a parameter at distributed locations, the apparatus including: an optical fiber having: a first series of fiber Bragg gratings (FBGs) and configured to measure the parameter at a portion of the distributed locations; a second series of FBGs and configured to measure the parameter at another portion of the distributed locations; and an optical interrogator configured to illuminate the optical fiber and to receive light signals resulting from the illumination, the light signals including first light signals from the first series of FBGs within a first range of wavelengths, second light signals from the second series of FBGs within a second range of wavelengths, and other light signals within a third range of wavelengths, the ranges of wavelengths being distinct from each other; wherein the first light signals and the second light signals are used to estimate the parameter at the distributed locations.
摘要翻译： 一种用于估计分布位置处的参数的装置，所述装置包括：光纤，其具有：第一系列光纤布拉格光栅（FBG），并且被配置为在所述分布位置的一部分处测量所述参数; 第二系列FBG并且被配置为在分布位置的另一部分处测量参数; 以及光学询问器，被配置为照亮所述光纤并且接收由所述照明产生的光信号，所述光信号包括来自所述第一波长范围内的所述第一系列FBG的第一光信号，来自所述第二系列FBG内的第二光信号 第二波长范围以及在第三波长范围内的其它光信号，波长范围彼此不同; 其中第一光信号和第二光信号用于估计分布位置处的参数。
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7.发明申请COMBINED SWEPT-CARRIER AND SWEPT-MODULATION FREQUENCY OPTICAL FREQUENCY DOMAIN REFLECTOMETRY 有权组合式SWEPT-CARRIER和SWEPT-MODULATION频率光频域反射测试公开(公告)号：US20110181871A1
公开(公告)日：2011-07-28
申请号：US12695613
申请日：2010-01-28
CPC分类号： G01D5/35316 , G01D5/35387 , G01M11/3172
摘要： An apparatus for estimating a parameter, the apparatus includes: an optical fiber; a component in communication with the optical fiber and configured to interact with light at a wavelength related to the parameter; and an optical interrogator in communication with the optical fiber and configured to: illuminate the optical fiber with a series of light inputs, each light input in the series having a substantially constant unique optical wavelength and swept-frequency amplitude modulation; and receive a resulting light signal associated with each light input in the series; wherein the resulting light signals associated with the series of light inputs are used to estimate the parameter.
摘要翻译： 一种用于估计参数的装置，所述装置包括：光纤; 与所述光纤通信并被配置成与所述参数相关的波长的光相互作用的部件; 以及光学询问器，其与所述光纤通信并且被配置为：用一系列光输入照射所述光纤，所述串联中的每个光输入具有基本上恒定的唯一光波长和扫频振幅调制; 并接收与该系列中的每个光输入相关联的结果光信号; 其中与所述一系列光输入相关联的所得光信号用于估计所述参数。
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公开(公告)号：US09435197B2
公开(公告)日：2016-09-06
申请号：US14154638
申请日：2014-01-14
申请人： Roger G. Duncan
发明人： Roger G. Duncan
IPC分类号： E21B47/00 , G01V3/00 , G01N29/24 , G01N29/44 , G01J3/28 , E21B7/00 , E21B47/12 , E21B33/035 , E21B7/124
CPC分类号： E21B47/123 , E21B7/124 , E21B33/0355
摘要： A distributed borehole system includes a surface-based assembly located on a surface of a body of water and a marinized assembly located on a floor of the body of water adjacent to a borehole in an earth formation. The system includes a borehole interrogator including a transmitter configured to generate a signal and to transmit the signal into the borehole and a receiver configured to receive a reflected signal from the borehole based on the signal transmitted by the transmitter. The system further includes a processor configured to process the reflected signal to generate data representing characteristics of one of the borehole system, the borehole, and an earth formation defining the borehole. The processor is located in the surface-based assembly, the receiver is located in the marinized assembly, and the transmitter is located in at least one of the surface-based assembly and the marinized assembly.
摘要翻译： 分布式井眼系统包括位于水体表面上的基于表面的组件和位于与地球地层中的井眼相邻的水体的地板上的海洋化组件。 该系统包括钻孔询问器，其包括被配置为产生信号并将该信号传送到钻孔中的发射器，以及被配置为基于由发射器发送的信号从井眼接收反射信号的接收器。 该系统还包括处理器，其被配置为处理反射信号以产生表示钻孔系统，钻孔和限定钻孔的地层之一的特性的数据。 处理器位于基于表面的组件中，接收器位于海洋化组件中，并且变送器位于基于表面的组件和海洋化组件中的至少一个中。
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9.发明申请公开(公告)号：US20150083904A1
公开(公告)日：2015-03-26
申请号：US14035328
申请日：2013-09-24
CPC分类号： G02B6/4429 , E21B47/123 , G01D5/35361 , G01L1/242 , G01M11/083 , G02B6/4402 , G02B6/4415
摘要： An optical cable includes an outer tubing. At least one optical fiber disposed within the outer tubing. A stiffening member configured to bend with bending of the outer tubing; wherein the stiffening member shifts a neutral plane of the cable away from the at least one optical fiber. Also included is a method of increasing a bending sensitivity in an optical cable.
摘要翻译： 光缆包括外管。 设置在外管内的至少一根光纤。 配置成弯曲外管弯曲的加强构件; 其中所述加强构件将所述电缆的中性平面偏离所述至少一个光纤。 还包括增加光缆中的弯曲灵敏度的方法。
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10.发明申请公开(公告)号：US20120179378A1
公开(公告)日：2012-07-12
申请号：US12985773
申请日：2011-01-06
CPC分类号： E21B47/0007 , E21B47/123
摘要： 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.
摘要翻译： 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。
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