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    Systems and methods for distributed interferometric acoustic monitoring
    1.
    发明授权
    Systems and methods for distributed interferometric acoustic monitoring 有权
    分布式干涉声学监测系统和方法

    公开(公告)号：US08347958B2

    公开(公告)日：2013-01-08

    申请号：US13528608

    申请日：2012-06-20

    申请人： Arthur H. Hartog ,  J. Ernest Brown ,  John Cook ,  Jonathan James Elphick ,  Paul Simon Hammond ,  Ashley Bernard Johnson

    发明人： Arthur H. Hartog ,  J. Ernest Brown ,  John Cook ,  Jonathan James Elphick ,  Paul Simon Hammond ,  Ashley Bernard Johnson

    IPC分类号： E21B47/00

    CPC分类号： G01V8/02 ,  E21B41/0064 ,  E21B43/26 ,  E21B47/06 ,  E21B47/123 ,  G01V1/226 ,  G01V8/16 ,  Y02C10/14

    摘要： Acoustic monitoring is carried out using a fiber optic cable. Coherent Rayleigh noise generated by the transmission of a coherent beam of radiation through the fiber optic cable is detected, a phase of the coherent Rayleigh noise is measured and the measured phase is processed to identify an acoustic occurrence along the fiber optic cable. In certain aspects, an optical fiber serves as a distributed interferometer that may be used to monitor a conduit, wellbore or reservoir. The distributed interferometric monitoring provides for accurate detection of acoustic occurrences along the fiber optic cable and these acoustic occurrences may include fluid flow in a pipeline or wellbore, processes taking place in a wellbore or pipeline, fracturing, gravel packing, or production logging.

    摘要翻译： 使用光纤电缆进行声学监测。 检测到通过光纤电缆传输相干的辐射束产生的相干瑞利噪声，测量相干瑞利噪声的相位，并且处理测量的相位以识别沿着光纤电缆的声音发生。 在某些方面，光纤用作分布式干涉仪，其可用于监测导管，井筒或储层。 分布式干涉测量提供对沿着光纤电缆的声学发生的精确检测，并且这些声学发生可以包括在管道或井眼中的流体流动，在井眼或管道中发生的过程，压裂，砾石填充或生产测井。

    Raman amplification in distributed optical fiber sensing systems
    5.
    发明授权
    Raman amplification in distributed optical fiber sensing systems 有权
    分布式光纤传感系统中的拉曼放大

    公开(公告)号：US08989526B2

    公开(公告)日：2015-03-24

    申请号：US12375306

    申请日：2007-07-12

    申请人： Arthur H. Hartog

    发明人： Arthur H. Hartog

    IPC分类号： G02B6/00 ,  G01D5/353 ,  G01M11/00 ,  G01N21/63

    CPC分类号： G01D5/353 ,  G01D5/35364 ,  G01D5/35383 ,  G01M11/319 ,  G01N2021/638 ,  H01S3/06754 ,  H01S3/094076 ,  H01S3/302 ,  H04B10/2916

    摘要： A method of providing Raman amplification in an optical fiber sensing system, comprises generating a probe pulse of light and launching the pulse into a sensing optical fiber, generating pump light at a shorter wavelength and modulating it to produce a time-varying intensity profile, and launching the pump light into the sensing fiber. such that the intensity of the launched pump light during launch of the probe pulse is different from the intensity at other times. Raman amplification of backscattered light produced by the probe pulse as it propagates along the fiber is achieved, as is amplification of the probe pulse if the pump power is non-zero during launch of the probe pulse.

    摘要翻译： 一种在光纤感测系统中提供拉曼放大的方法，包括产生光的探针脉冲并将脉冲发射到感测光纤中，产生较短波长的泵浦光并调制它以产生时变强度分布，以及 将泵浦光引入传感光纤。 使得在发射探针脉冲期间所发射的泵浦光的强度与其他时间的强度不同。 实现当探头脉冲沿着光纤传播时由探针脉冲产生的反向散射光的拉曼放大，如果在发射探针脉冲期间泵功率不为零，探针脉冲的放大。

    FIBER OPTIC CABLE
    6.
    发明申请
    FIBER OPTIC CABLE 有权
    光纤电缆

    公开(公告)号：US20110229099A1

    公开(公告)日：2011-09-22

    申请号：US12293424

    申请日：2007-02-22

    申请人： Arthur H. Hartog ,  Andrew P. Strong

    发明人： Arthur H. Hartog ,  Andrew P. Strong

    IPC分类号： G02B6/44

    CPC分类号： G01L1/242 ,  G01L1/246 ,  G02B6/4401 ,  G02B6/4432

    摘要： A fiber optic cable includes a strain element including a first optical fiber and an optical element including a second optical fiber. The optical element is compliantly coupled with the strain element to transfer a portion of strain experienced by the strain element to the optical element. A fiber optic cable includes a strain transfer member, a central optical fiber disposed through the strain transfer member, and a tight jacket mechanically coupling the central optical fiber and the strain transfer member. The fiber optic cable further includes a compliant layer disposed about and affixed to the strain transfer member; a peripheral optical fiber disposed in the compliant layer, such that a portion of the strain experienced by the strain transfer member is transferred to the peripheral optical fiber via the compliant layer; and a protective cover disposed about the compliant layer.

    摘要翻译： 光纤电缆包括包括第一光纤的应变元件和包括第二光纤的光学元件。 光学元件与应变元件顺应地耦合以将应变元件经历的应变的一部分转移到光学元件。 光纤电缆包括应变传递部件，通过应变传递部件设置的中心光纤以及将中心光纤与应变传递部件机械连接的紧套。 光纤电缆还包括设置在应变传递部件周围并固定到应变传递部件上的柔顺层; 设置在柔性层中的周边光纤，使得应变传递部件经受的应变的一部分经由柔性层传递到外围光纤; 以及围绕柔顺层设置的保护盖。

    Methods and systems to activate downhole tools with light
    7.
    发明授权
    Methods and systems to activate downhole tools with light 有权
    用光激活井下工具的方法和系统

    公开(公告)号：US07854267B2

    公开(公告)日：2010-12-21

    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： E21B41/00 ,  E21B47/01

    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。

    MEASURING BRILLOUIN BACKSCATTER FROM AN OPTICAL FIBRE USING A TRACKING SIGNAL
    8.
    发明申请
    MEASURING BRILLOUIN BACKSCATTER FROM AN OPTICAL FIBRE USING A TRACKING SIGNAL 有权
    使用跟踪信号从光纤测量BRILLUIN背板

    公开(公告)号：US20100002226A1

    公开(公告)日：2010-01-07

    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： G01N21/47

    CPC分类号： G01M11/319 ,  G01D5/35364

    摘要： A method for measuring Brillouin backscattering from an optical fibre (18), comprises frequency mixing a first signal with a frequency f B (t) representative of the Brillouin frequency shift in backscattered light received from a deployed optical fibre with a second signal at a frequency f i (t) that varies in time in the same manner as a Brillouin shift previously measured from the fibre to produce a difference signal with a difference frequency iF(t) 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（18）测量布里渊后向散射的方法，包括以表示频率f B（t）的频率混合第一信号，频率f B（t）表示从部署的光纤接收的后向散射光中的布里渊频移，频率为第二信号 fi（t）以与先前从光纤测量的布里渊偏移相同的方式在时间上变化，以产生具有与所接收的光具有的情况相对应的具有标称常数值的差异频率iF（t）的差分信号 布里渊偏移符合先前测量的位移。 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。 可以进行混频。 光学或电学。 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。

    RAMAN AMPLIFICATION IN DISTRIBUTED OPTICAL FIBER SENSING SYSTEMS
    9.
    发明申请
    RAMAN AMPLIFICATION IN DISTRIBUTED OPTICAL FIBER SENSING SYSTEMS 有权
    分布式光纤传感系统中的拉曼放大

    公开(公告)号：US20090263069A1

    公开(公告)日：2009-10-22

    申请号：US12375306

    申请日：2007-07-12

    申请人： Arthur H. Hartog

    发明人： Arthur H. Hartog

    IPC分类号： G02B6/00 ,  H01S3/30

    CPC分类号： G01D5/353 ,  G01D5/35364 ,  G01D5/35383 ,  G01M11/319 ,  G01N2021/638 ,  H01S3/06754 ,  H01S3/094076 ,  H01S3/302 ,  H04B10/2916

    摘要： A method of providing Raman amplification in an optical fiber sensing system, comprises generating a probe pulse of light and launching the pulse into a sensing optical fiber, generating pump light at a shorter wavelength and modulating it to produce a time-varying intensity profile, and launching the pump light into the sensing fiber. such that the intensity of the launched pump light during launch of the probe pulse is different from the intensity at other times. Raman amplification of backscattered light produced by the probe pulse as it propagates along the fiber is achieved, as is amplification of the probe pulse if the pump power is non-zero during launch of the probe pulse.

    摘要翻译： 一种在光纤感测系统中提供拉曼放大的方法，包括产生光的探针脉冲并将脉冲发射到感测光纤中，产生较短波长的泵浦光并调制它以产生时变强度分布，以及 将泵浦光引入传感光纤。 使得在发射探针脉冲期间所发射的泵浦光的强度与其他时间的强度不同。 实现当探头脉冲沿着光纤传播时由探针脉冲产生的反向散射光的拉曼放大，如果在发射探针脉冲期间泵功率不为零，探针脉冲的放大。

    Optical time domain reflectometry
    10.
    发明授权
    Optical time domain reflectometry 有权
    光时域反射

    公开(公告)号：US07304725B2

    公开(公告)日：2007-12-04

    申请号：US10502616

    申请日：2003-01-30

    申请人： Arthur H. Hartog ,  Peter C. Wait

    发明人： Arthur H. Hartog ,  Peter C. Wait

    IPC分类号： G01N21/00

    CPC分类号： G01M11/319 ,  G01M11/3109 ,  H04B10/071

    摘要： An optical time domain reflectometry apparatus for sensing a parameter in a region of interest is characterized in that the optical fiber includes a first section into which optical radiation at the probe wavelength is launched and a second section deployed in the region of interest. The first section has a higher intensity threshold for the onset of non-linear effects than the second section. The source launches the optical radiation into the first section at an intensity lower than the non-linear effects intensity threshold of the first section but higher than the non-linear effects intensity threshold of the second section. The attenuation characteristics of the first section are chosen such that the intensity of the optical radiation at the probe wavelength that reaches the second section is below the threshold for the onset of non-linear effects of the second section.

    摘要翻译： 用于感测感兴趣区域中的参数的光学时域反射测量装置的特征在于，光纤包括其中发射探针波长的光辐射的第一部分和在感兴趣区域中部署的第二部分。 第一部分具有比第二部分更高的非线性效应开始的强度阈值。 光源以比第一部分的非线性效应强度阈值低的强度将光辐射发射到第一部分中，但高于第二部分的非线性效应强度阈值。 选择第一部分的衰减特性使得到达第二部分的探针波长处的光辐射的强度低于第二部分的非线性效应开始的阈值。