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公开(公告)号：US20110199618A1
公开(公告)日：2011-08-18
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：US20110172959A1
公开(公告)日：2011-07-14
申请号：US12772253
申请日：2010-05-03
CPC分类号： G01V8/02 , G01B9/02023 , G01B9/02025 , G01B2290/25 , G01D5/268 , G01K5/48 , G01K11/3206
摘要： An apparatus for estimating a property includes a hollow core tube and an input light guide disposed at least partially within hollow core tube. The apparatus also includes a second gap disposed within the hollow core tube and separated from the input light guide by an air gap width. The second gap is formed of a first solid material and has a second gap width. The apparatus also includes a third gap disposed at least partially within the hollow core tube and being further from the input light guide than the second gap. The third gap is formed of a second solid material and has a third gap width.
摘要翻译： 用于估计特性的装置包括中空芯管和至少部分地设置在中空芯管内的输入光导。 该设备还包括设置在中空芯管内的第二间隙，并且通过气隙宽度与输入光导分离。 第二间隙由第一固体材料形成并具有第二间隙宽度。 该装置还包括至少部分地设置在中空芯管内并且比第二间隙更远离输入光导的第三间隙。 第三间隙由第二固体材料形成并且具有第三间隙宽度。
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53.发明申请NOVEL SENSOR ARRAY CONFIGURATION FOR EXTENDING USEFUL SENSING LENGTH OF A SWEPT-WAVELENGTH INTERFEROMETRY BASED SYSTEM 有权新型传感器阵列配置，用于扩展基于SWEPT-WAVELENGTH INTERFEROMETRY的系统的有效感测长度公开(公告)号：US20110110621A1
公开(公告)日：2011-05-12
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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54.发明申请LOCATION DEPENDENT CALIBRATION FOR DISTRIBUTED TEMPERATURE SENSOR MEASUREMENTS 有权用于分布式温度传感器测量的位置相关校准公开(公告)号：US20080232425A1
公开(公告)日：2008-09-25
申请号：US12051984
申请日：2008-03-20
申请人： Travis S. Hall , Brooks A. Childers
发明人： Travis S. Hall , Brooks A. Childers
IPC分类号： G01K15/00
摘要： A method for calibrating distributed temperature sensing (DTS) systems is disclosed. The method includes: receiving temperature data associated with one or more locations along a length of an optical fiber; calculating a set of unique calibration coefficients specific to each of the one or more locations along the fiber length; and applying the set of calibration coefficients specific to each of the one or more locations along the fiber length to the temperature data for calibrated correction thereof. Also disclosed is a system for calibrating DTS data and a wellbore for providing calibrated DTS data.
摘要翻译： 公开了一种用于校准分布式温度感测（DTS）系统的方法。 该方法包括：沿着光纤长度接收与一个或多个位置相关联的温度数据; 计算沿着所述光纤长度的所述一个或多个位置中的每一个特有的唯一校准系数集合; 以及将沿所述光纤长度的所述一个或多个位置中的每一个特定的所述一组校准系数应用于所述温度数据以进行校准校正。 还公开了用于校准DTS数据的系统和用于提供校准DTS数据的井眼。
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公开(公告)号：US09335502B1
公开(公告)日：2016-05-10
申请号：US14577840
申请日：2014-12-19
申请人： Paul F. Wysocki , Christopher H. Lambert , Juan P. Franco , Carl W. Stoesz , Brooks A. Childers
发明人： Paul F. Wysocki , Christopher H. Lambert , Juan P. Franco , Carl W. Stoesz , Brooks A. Childers
CPC分类号： G02B6/443 , E21B47/0006 , E21B47/01 , G01L1/242 , G01L1/243 , G02B6/4427 , G02B6/4434
摘要： A fiber optic cable arrangement includes a core, a sheath surrounding the core and being strain locked to the core, and at least one optical fiber positioned within the sheath being strain locked to the core.
摘要翻译： 光纤电缆布置包括芯，围绕芯并且应变锁定到芯的护套，并且位于护套内的至少一个光纤被应变锁定到芯。
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56.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：US08558994B2
公开(公告)日：2013-10-15
申请号：US12958712
申请日：2010-12-02
CPC分类号： G01B9/0205 , G01B9/02057 , G01B2290/25 , G01D5/268 , G01K11/3206
摘要： An apparatus for estimating a property, the apparatus includes: a hollow core tube having a first opening and a second opening; a first optical waveguide disposed within the first opening; and a second optical waveguide disposed within the second opening and spaced a distance from the first optical waveguide, the distance being related to the property; wherein a portion of at least one of the optical waveguides within the tube is perimetrically isolated from the tube.
摘要翻译： 一种用于估计特性的装置，该装置包括：具有第一开口和第二开口的中空芯管; 布置在第一开口内的第一光波导; 以及第二光波导，其设置在所述第二开口内并且与所述第一光波导间隔开一定距离，所述距离与所述特性相关; 其中所述管内的所述光波导中的至少一个的一部分与所述管周边隔离。
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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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公开(公告)号：US20120314988A1
公开(公告)日：2012-12-13
申请号：US13589653
申请日：2012-08-20
申请人： Brooks A. Childers , Daniel S. Homa
发明人： Brooks A. Childers , Daniel S. Homa
CPC分类号： E21B47/0006 , G01L1/246 , G02B6/022
摘要： An apparatus for estimating a shape, the apparatus including: an optical fiber configured to conform to the shape and having a first core offset from a centerline of the optical fiber, the first core having an optical characteristic configured to change due to a change in shape of the optical fiber wherein a change in the optical characteristic is used to estimate the shape. A method for estimating a shape is also disclosed.
摘要翻译： 一种用于估计形状的装置，所述装置包括：光纤，被配置为符合形状并具有偏离光纤的中心线的第一芯，所述第一芯具有被配置为由于形状变化而改变的光学特性 其中使用光学特性的变化来估计形状。 还公开了一种用于估计形状的方法。
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