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公开(公告)号：US20180245460A1
公开(公告)日：2018-08-30
申请号：US15961410
申请日：2018-04-24
Applicant: Ajit Balagopal , Juan P. Franco , Paul F. Wysocki
Inventor： Ajit Balagopal , Juan P. Franco , Paul F. Wysocki
CPC classification number: E21B47/123 , G02B6/4413 , G02B6/4415 , G02B6/4435
Abstract: An embodiment of a method of manufacturing a fiber optic cable includes selecting a cable support structure configured to support an optical fiber sensor, adhering the optical fiber sensor to the cable support structure by applying a temporary adhesive, and installing a protective layer around the cable support structure and the temporarily adhered optical fiber sensor. The method further includes removing a bond between the optical fiber sensor and the temporary adhesive, wherein removing the bond includes injecting a debonding material into a space formed between the cable support structure and the protective layer, and injecting a permanent adhesive into the space, the permanent adhesive configured to immobilize the optical fiber sensor relative to the protective layer and allow strain to be transferred from the protective layer to the optical fiber sensor.
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公开(公告)号：US10132161B2
公开(公告)日：2018-11-20
申请号：US15961410
申请日：2018-04-24
Applicant: Ajit Balagopal , Juan P. Franco , Paul F. Wysocki
Inventor： Ajit Balagopal , Juan P. Franco , Paul F. Wysocki
Abstract: An embodiment of a method of manufacturing a fiber optic cable includes selecting a cable support structure configured to support an optical fiber sensor, adhering the optical fiber sensor to the cable support structure by applying a temporary adhesive, and installing a protective layer around the cable support structure and the temporarily adhered optical fiber sensor. The method further includes removing a bond between the optical fiber sensor and the temporary adhesive, wherein removing the bond includes injecting a debonding material into a space formed between the cable support structure and the protective layer, and injecting a permanent adhesive into the space, the permanent adhesive configured to immobilize the optical fiber sensor relative to the protective layer and allow strain to be transferred from the protective layer to the optical fiber sensor.
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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
Applicant: Brooks A. Childers , Roger Glen Duncan , Ajit Balagopal , Dan R. Provenzano
Inventor： Brooks A. Childers , Roger Glen Duncan , Ajit Balagopal , Dan R. Provenzano
IPC: G01B9/02 , G01J4/00 , G01N21/954 , G01D5/353
CPC classification number: G01J4/00 , G01D5/35316 , G01D5/35393 , G01N21/954
Abstract: 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.
Abstract translation: 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：US20160040527A1
公开(公告)日：2016-02-11
申请号：US14792944
申请日：2015-07-07
Applicant: Ajit Balagopal , Juan P. Franco , Paul F. Wysocki
Inventor： Ajit Balagopal , Juan P. Franco , Paul F. Wysocki
IPC: E21B47/12
CPC classification number: E21B47/123 , G02B6/4413 , G02B6/4415 , G02B6/4435
Abstract: An embodiment of a method of manufacturing a fiber optic cable includes selecting a cable support structure configured to support an optical fiber sensor, adhering the optical fiber sensor to the cable support structure by applying a temporary adhesive, and installing a protective layer around the cable support structure and the temporarily adhered optical fiber sensor. The method further includes removing a bond between the optical fiber sensor and the temporary adhesive, wherein removing the bond includes injecting a debonding material into a space formed between the cable support structure and the protective layer, and injecting a permanent adhesive into the space, the permanent adhesive configured to immobilize the optical fiber sensor relative to the protective layer and allow strain to be transferred from the protective layer to the optical fiber sensor.
Abstract translation: 制造光纤电缆的方法的一个实施例包括选择配置成支撑光纤传感器的电缆支撑结构，通过施加临时粘合剂将光纤传感器粘附到电缆支撑结构，以及在电缆支架周围安装保护层 结构和临时粘贴的光纤传感器。 该方法还包括去除光纤传感器和临时粘合剂之间的接合，其中去除接合包括将脱粘材料注入到形成在电缆支撑结构和保护层之间的空间中，以及将永久性粘合剂注入到该空间中， 永久性粘合剂被配置为相对于保护层固定光纤传感器，并且允许应变从保护层转移到光纤传感器。
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公开(公告)号：US09188495B2
公开(公告)日：2015-11-17
申请号：US13705301
申请日：2012-12-05
Applicant: Christopher Lambert , Ajit Balagopal , Jonas Ivasauskas
Inventor： Christopher Lambert , Ajit Balagopal , Jonas Ivasauskas
CPC classification number: G01L1/246 , G01M5/0025 , G01M5/0041 , G01M5/0091 , G01M11/086 , Y10T29/49826 , Y10T29/49925
Abstract: A strain sensing cable including one or more strain sensing elements and a strain transfer medium extruded directly onto the one or more strain sensing elements disposed within the strain transfer medium. The strain transfer medium is operatively arranged to transfer strain experienced by the cable to the one or more strain sensing elements. A method of making a strain sensing cable is also included.
Abstract translation: 应变传感电缆，其包括一个或多个应变传感元件和直接挤压到设置在应变传输介质内的一个或多个应变传感元件上的应变传递介质。 应变传递介质可操作地布置成将由电缆经历的应变传递到一个或多个应变感测元件。 还包括制造应变感测电缆的方法。
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Patent Agency Ranking
6.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
Applicant: Roger G. Duncan , Brooks A. Childers , Robert M. Harman , Ajit Balagopal
Inventor： Roger G. Duncan , Brooks A. Childers , Robert M. Harman , Ajit Balagopal
CPC classification number: E21B47/0007 , E21B47/123
Abstract: 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.
Abstract translation: 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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公开(公告)号：US20140150563A1
公开(公告)日：2014-06-05
申请号：US13705301
申请日：2012-12-05
Applicant: Christopher Lambert , Ajit Balagopal , Jonas Ivasauskas
Inventor： Christopher Lambert , Ajit Balagopal , Jonas Ivasauskas
CPC classification number: G01L1/246 , G01M5/0025 , G01M5/0041 , G01M5/0091 , G01M11/086 , Y10T29/49826 , Y10T29/49925
Abstract: A strain sensing cable including one or more strain sensing elements and a strain transfer medium extruded directly onto the one or more strain sensing elements disposed within the strain transfer medium. The strain transfer medium is operatively arranged to transfer strain experienced by the cable to the one or more strain sensing elements. A method of making a strain sensing cable is also included.
Abstract translation: 应变传感电缆，其包括一个或多个应变传感元件和直接挤压到设置在应变传输介质内的一个或多个应变传感元件上的应变传递介质。 应变传递介质可操作地布置成将由电缆经历的应变传递到一个或多个应变感测元件。 还包括制造应变感测电缆的方法。
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8.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
Applicant: Roger G. Duncan , Alexander M. Barry , Brooks A. Childers , Ajit Balagopal , Philip Robin Couch
Inventor： Roger G. Duncan , Alexander M. Barry , Brooks A. Childers , Ajit Balagopal , Philip Robin Couch
IPC: H04B10/08
CPC classification number: E21B47/0006 , E21B47/123 , G01D5/35354
Abstract: 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.
Abstract translation: 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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公开(公告)号：US20180230049A1
公开(公告)日：2018-08-16
申请号：US15431032
申请日：2017-02-13
Applicant: Paul Francis Wysocki , Ajit Balagopal , Christopher Howard Lambert , Daniel Scott Homa
CPC classification number: C03C25/6208 , C03B37/032 , C03C25/1062 , C03C25/109 , C03C25/26 , C03C25/285 , C03C25/40 , C03C25/44 , E21B47/00 , E21B47/102 , E21B47/123 , G02B6/02152 , G02B6/02395 , G02B2006/02157
Abstract: A method for producing a protected optical fiber with distributed sensors includes heating an optical fiber preform and drawing the heated optical fiber preform to form a drawn optical fiber. The method also includes coating the drawn optical fiber with a carbon coating after the optical fiber is drawn to provide a carbon coated optical fiber and then writing a series of fiber Bragg gratings (FBGs) into the carbon coated optical fiber to provide a carbon coated optical fiber with FBGs. The method further includes coating the carbon coated optical fiber with FBGs with one or more layers of a polymer to provide the protected optical fiber with distributed sensors, wherein the heating, drawing, carbon coating the drawn optical fiber, writing, coating the carbon coated optical fiber are performed in that sequence while the protected optical fiber is being produced.
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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
Applicant: Alexander M. Barry , Roger Glen Duncan , Brooks A. Childers , Robert M. Harman , Daniel S. Homa , Ajit Balagopal , Philip Robin Couch
Inventor： Alexander M. Barry , Roger Glen Duncan , Brooks A. Childers , Robert M. Harman , Daniel S. Homa , Ajit Balagopal , Philip Robin Couch
IPC: G01C3/08
CPC classification number: G01S17/08 , E21B47/06 , E21B47/123 , G01L1/246 , G01S7/4818 , G01S17/88
Abstract: 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.
Abstract translation: 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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