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21. 发明授权

US07995209B2 Time domain multiplexing of interferometric sensors 有权
标题翻译：干涉测量传感器的时域复用
公开(公告)号：US07995209B2
公开(公告)日：2011-08-09
申请号：US12245921
申请日：2008-10-06
申请人： Arthur H. Hartog
发明人： Arthur H. Hartog
IPC分类号： G01B9/02
CPC分类号： E21B47/123 , G01D5/35383 , G01K1/026 , G01K11/3206 , G01L1/246 , G01L11/025 , H04L67/12
摘要： An optical sensor array includes a plurality of interferometric sensors that are disposed at a plurality of locations in a region of interest. To determine a physical parameter at the plurality of locations, the array is interrogated with a plurality of optical pulses covering a range of optical wavelengths. The signals returned in response to the interrogating pulses are analyzed to determine an optical path imbalance associated with each sensor, where the optical path imbalance bears a relationship to the physical parameter of interest. Each sensor's contribution to the returned signals is determined by measuring the transit time between the launching of the interrogating pulses and the detection of the returned signals. By determining each sensor's contribution, the physical parameter may be determined at each of the plurality of locations.
摘要翻译：光学传感器阵列包括多个干涉测量传感器，其设置在感兴趣区域中的多个位置处。为了确定多个位置处的物理参数，利用覆盖一定范围的光波长的多个光脉冲来询问该阵列。分析响应于询问脉冲返回的信号，以确定与每个传感器相关联的光路不平衡，其中光路不平衡与感兴趣的物理参数具有关系。每个传感器对返回信号的贡献通过测量询问脉冲发射与检测返回信号之间的通过时间来确定。通过确定每个传感器的贡献，可以在多个位置中的每一个处确定物理参数。

22. 发明授权

US07859654B2 Frequency-scanned optical time domain reflectometry 有权
标题翻译：频率扫描光时域反射计
公开(公告)号：US07859654B2
公开(公告)日：2010-12-28
申请号：US12174712
申请日：2008-07-17
申请人： Arthur H. Hartog
发明人： Arthur H. Hartog
IPC分类号： G01N21/00
CPC分类号： G01M11/3127 , G01D5/35361 , G01H9/004
摘要： A frequency-scanned optical time domain reflectometry technique includes launching a plurality of interrogating pulses into an optical fiber at a plurality of optical carrier frequencies. A Rayleigh backscatter signal is detected for each interrogating pulse as a function of time between the launching of the pulse and the detection of the backscatter signal. The time resolved Rayleigh backscatter signal at each optical frequency may then be examined to determine a distribution of a physical parameter along the length of the optical fiber.
摘要翻译：频率扫描光时域反射技术包括在多个光载波频率下将多个询问脉冲发射到光纤中。对于每个询问脉冲，检测到瑞利反向散射信号作为脉冲发射与反向散射信号检测之间的时间的函数。然后可以检查在每个光学频率处的时间分辨的瑞利反向散射信号以确定沿着光纤的长度的物理参数的分布。

23. 发明申请

US20100207019A1 OPTICAL MONITORING OF FLUID FLOW 审中-公开
标题翻译：流体流动的光学监测
公开(公告)号：US20100207019A1
公开(公告)日：2010-08-19
申请号：US12705767
申请日：2010-02-15
申请人： Arthur H. Hartog , Colin A. Wilson
发明人： Arthur H. Hartog , Colin A. Wilson
IPC分类号： E21B47/01 , G01V8/16 , E21B47/06
CPC分类号： E21B47/101
摘要： A distributed vibration sensor is positioned in a wellbore to measure fluid flow. The output of the sensor is monitored to acquire a distribution of vibration along a region of interest in the wellbore. An indication of the effectiveness of a well treatment to stimulate fluid flow in the wellbore may be provided based on the acquired vibration distribution. In some embodiments, the well treatment may be adjusted based on the indication of effectiveness.
摘要翻译：分布式振动传感器位于井眼中以测量流体流动。监测传感器的输出以获得沿着井筒中的感兴趣区域的振动分布。可以基于所获得的振动分布来提供用于刺激井筒中的流体流动的井处理的有效性的指示。在一些实施例中，可以基于有效性的指示来调整井处理。

24. 发明授权

US07668411B2 Distributed vibration sensing system using multimode fiber 有权
标题翻译：分布式振动感应系统采用多模光纤
公开(公告)号：US07668411B2
公开(公告)日：2010-02-23
申请号：US12134339
申请日：2008-06-06
申请人： Dylan Davies , Arthur H. Hartog , Kamal Kader
发明人： Dylan Davies , Arthur H. Hartog , Kamal Kader
IPC分类号： G02B6/00
CPC分类号： G01H9/004 , G01M11/3109
摘要： An optical time domain reflectometry (OTDR) system is configured to detect Rayleigh backscatter reflected from a multimode sensing optical fiber. The system includes a single spatial mode filtering system to select a single speckle of the Rayleigh backscatter produced in response to an optical pulse launched into the multimode fiber. The detected single speckle may be used for distributed disturbance (vibration) detection.
摘要翻译：光时域反射测量（OTDR）系统被配置为检测从多模感测光纤反射的瑞利反向散射。该系统包括单个空间模式滤波系统，用于响应于发射到多模光纤中的光脉冲而选择产生的瑞利反向散射的单个斑点。检测到的单个斑点可用于分布式扰动（振动）检测。

25. 发明申请

US20100025032A1 METHODS AND SYSTEMS TO ACTIVATE DOWNHOLE TOOLS WITH LIGHT 有权
标题翻译：用光激活井下工具的方法和系统
公开(公告)号：US20100025032A1
公开(公告)日：2010-02-04
申请号：US12430486
申请日：2009-04-27
申请人： David R. Smith , Rogerio T. Ramos , Arthur H. Hartog , Vladimir Vaynshteyn
发明人： David R. Smith , Rogerio T. Ramos , Arthur H. Hartog , Vladimir Vaynshteyn
IPC分类号： E21B43/00
CPC分类号： F42C11/00 , E21B23/00 , E21B47/123 , F42B3/113 , G01V11/002
摘要： The present invention comprises a system and methods to actuate downhole tools by transmitting an optical signal through an optical fiber to the downhole tool. The optical signal can comprise a specific optical signal frequency, signal, wavelength or intensity. The downhole tool can comprise packers, perforating guns, flow control valves, such as sleeve valves and ball valves, samplers, sensors, pumps, screens (such as to expand), chemical cutters, plugs, detonators, or nipples.
摘要翻译：本发明包括通过将光信号通过光纤传输到井下工具来致动井下工具的系统和方法。光信号可以包括特定的光信号频率，信号，波长或强度。井下工具可以包括封隔器，射孔枪，流量控制阀，例如套管阀和球阀，取样器，传感器，泵，屏幕（如扩展），化学切割器，塞子，雷管或乳头。

26. 发明申请

US20090304322A1 DISTRIBUTED VIBRATION SENSING SYSTEM USING MULTIMODE FIBER 有权
标题翻译：使用多模光纤的分布式振动传感系统
公开(公告)号：US20090304322A1
公开(公告)日：2009-12-10
申请号：US12134339
申请日：2008-06-06
申请人： Dylan Davies , Arthur H. Hartog , Kamal Kader
发明人： Dylan Davies , Arthur H. Hartog , Kamal Kader
IPC分类号： G02B6/00
CPC分类号： G01H9/004 , G01M11/3109
摘要： An optical time domain reflectometry (OTDR) system is configured to detect Rayleigh backscatter reflected from a multimode sensing optical fiber. The system includes a single spatial mode filtering system to select a single speckle of the Rayleigh backscatter produced in response to an optical pulse launched into the multimode fiber. The detected single speckle may be used for distributed disturbance (vibration) detection.
摘要翻译：光时域反射测量（OTDR）系统被配置为检测从多模感测光纤反射的瑞利反向散射。该系统包括单个空间模式滤波系统，用于响应于发射到多模光纤中的光脉冲而选择产生的瑞利反向散射的单个斑点。检测到的单个斑点可用于分布式扰动（振动）检测。

27. 发明授权

US09429450B2 Measuring brillouin backscatter from an optical fibre using digitisation 有权
标题翻译：使用数字化从光纤测量布里渊后向散射
公开(公告)号：US09429450B2
公开(公告)日：2016-08-30
申请号：US12377548
申请日：2007-08-07
申请人： Arthur H. Hartog
发明人： Arthur H. Hartog
IPC分类号： G01D5/353 , G01K11/32 , G01M11/00
CPC分类号： G01D5/35364 , G01K2011/322 , G01M11/3109 , G01M11/3145
摘要： A method for measuring Brillouin backscattering from an optical fiber, comprising mixing backscattered light received from the optical fiber and having a Brillouin frequency fβ(t) with coherent light at a frequency f i in an optical detector to produce an electrical signal with a difference frequency ΔF(t)=fβ(t)−f15 and directly digitizing the electrical signal using an analog-to-digital converter to generate a sequence of samples representing the electrical signal, the samples then being processed to determine one or more properties of the Brillouin spectral line. The difference frequency may be further reduced by an additional frequency mixing stage to allow digitization at a lower sampling rate.
摘要翻译：一种用于从光纤测量布里渊后向散射的方法，包括将从光纤接收的背散射光混合并且具有布里渊频率fβ（t）与光学检测器中的频率f 1处的相干光以产生具有差频ΔF的电信号（t）=fβ（t）-f15，并且使用模拟 - 数字转换器直接数字化电信号，以产生表示电信号的样本序列，然后处理样本以确定布里渊光谱的一个或多个特性线。可以通过附加的频率混合级来进一步减小差分频率，以允许以更低采样率进行数字化。

28. 发明授权

US08924158B2 Seismic acquisition system including a distributed sensor having an optical fiber 有权
标题翻译：地震采集系统包括具有光纤的分布式传感器
公开(公告)号：US08924158B2
公开(公告)日：2014-12-30
申请号：US12853057
申请日：2010-08-09
申请人： Ed Kragh , Everhard Muyzert , Johan Robertsson , Douglas E. Miller , Arthur H. Hartog
发明人： Ed Kragh , Everhard Muyzert , Johan Robertsson , Douglas E. Miller , Arthur H. Hartog
IPC分类号： G01V1/18 , G01H9/00 , G01V1/38 , G01D5/353
CPC分类号： G01V1/003 , E21B47/02208 , E21B49/087 , G01D5/35358 , G01H9/004 , G01V1/00 , G01V1/36 , G01V1/3808 , G01V8/00
摘要： A seismic acquisition system includes a distributed optical sensor (having an optical fiber) and an interrogation subsystem configured to generate a light signal to emit into the optical fiber. The interrogation subsystem receives, from the distributed optical sensor, backscattered light responsive to the emitted light signal, wherein the backscattered light is affected by one or both of seismic signals reflected from a subterranean structure and noise. Output data corresponding to the backscattered light is provided to a processing subsystem to determine a characteristic of the subterranean structure.
摘要翻译：地震采集系统包括分布式光学传感器（具有光纤）和被配置为产生发射到光纤中的光信号的询问子系统。询问子系统从分布式光学传感器接收响应于发出的光信号的反向散射光，其中后向散射光受到从地下结构和噪声反射的地震信号中的一个或两个的影响。与后向散射光对应的输出数据被提供给处理子系统以确定地下结构的特征。

29. 发明申请

US20130188168A1 FIBER OPTIC FORMATION DIMENSIONAL CHANGE MONITORING 审中-公开
标题翻译：光纤形成尺寸变化监测
公开(公告)号：US20130188168A1
公开(公告)日：2013-07-25
申请号：US13354629
申请日：2012-01-20
申请人： Arthur H. Hartog , Barry Read
发明人： Arthur H. Hartog , Barry Read
IPC分类号： G01B11/02 , G01B11/16
CPC分类号： G01B11/161 , E21B47/102 , E21B47/123 , G01V8/02 , G01V9/00
摘要： Fiber optic monitoring of dimensional changes within a subterranean formation includes deploying a fiber optic cable assembly in a wellbore and attaching the cable assembly to first and second attachment points on either side of the formation. A surface fiber optic measurement system measures changes in the optical path length between the attachment points of the fiber optic cable assembly. The changes in optical path length are directly indicative of dimensional changes within the formation.
摘要翻译：地下地层内的尺寸变化的光纤监测包括将光纤电缆组件部署在井筒中，并将缆线组件附接到地层两侧的第一和第二附接点。表面光纤测量系统测量光纤电缆组件的附接点之间的光程长度的变化。光程长度的变化直接表示地层内的尺寸变化。

30. 发明授权

US08134696B2 Measuring Brillouin backscatter from an optical fibre using a tracking signal 有权
标题翻译：使用跟踪信号从光纤测量布里渊反向散射
公开(公告)号：US08134696B2
公开(公告)日：2012-03-13
申请号：US12444186
申请日：2007-09-20
申请人： Arthur H. Hartog
发明人： Arthur H. Hartog
IPC分类号： G01N21/00
CPC分类号： G01M11/319 , G01D5/35364
摘要： A method for measuring Brillouin backscattering from an optical fiber, includes frequency mixing a first signal with a frequency representative of the Brillouin frequency shift in backscattered light received from a deployed optical fiber with a second signal at a frequency that varies in time in the same manner as a Brillouin shift previously measured from the fiber to produce a difference signal with a difference frequency that has a nominally constant value corresponding to the situation where the received light has a Brillouin shift that matches the previously measured shift. The difference signal is acquired and processed to determine properties of the Brillouin shift and corresponding physical parameters producing the shift. The frequency mixing can be carried out optically or electrically. Techniques for acquisition of the difference signal include the use of parallel frequency measurement channels and fast rate digital sampling.
摘要翻译：一种用于从光纤测量布里渊后向散射的方法包括：以表示在部署光纤中接收的后向散射光中的布里渊频移的频率的频率混合第一信号，并以相同方式以时间变化的频率具有第二信号作为先前从光纤测量的布里渊移动，以产生具有对应于接收的光具有与先前测量的移位相匹配的布里渊偏移的情况的具有标称常数值的差分信号的差分信号。获取并处理差分信号以确定布里渊位移的特性和产生偏移的相应物理参数。频率混合可以光学或电学进行。用于采集差分信号的技术包括使用并行频率测量通道和快速数字采样。

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