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1.发明授权Non-intrusive fiber optic pressure sensor for measuring unsteady pressures within a pipe 失效用于测量管道内不稳定压力的非侵入式光纤压力传感器公开(公告)号：US06450037B1
公开(公告)日：2002-09-17
申请号：US09344093
申请日：1999-06-25
申请人： Rebecca S. McGuinn , Daniel L. Gysling , Charles R. Winston , Allen R. Davis , John M. Faustino
发明人： Rebecca S. McGuinn , Daniel L. Gysling , Charles R. Winston , Allen R. Davis , John M. Faustino
IPC分类号： G01L900
CPC分类号： G01L1/246 , G01L11/025
摘要： Non-intrusive pressure sensors 14-18 for measuring unsteady pressures within a pipe 12 include an optical fiber 10 wrapped in coils 20-24 around the circumference of the pipe 12. The length or change in length of the coils 20-24 is indicative of the unsteady pressure in the pipe. Bragg gratings 310-324 impressed in the fiber 10 may be used having reflection wavelengths &lgr; that relate to the unsteady pressure in the pipe. One or more of sensors 14-18 may be axially distributed along the fiber 10 using wavelength division multiplexing and/or time division multiplexing.
摘要翻译： 用于测量管12内的不稳定压力的非侵入式压力传感器14-18包括围绕管12的圆周缠绕在线圈20-24中的光纤10.线圈20-24的长度或长度的变化指示 管道中的不稳定压力。 可以使用印在纤维10中的布拉格光栅310-324，其具有与管中的不稳定压力有关的反射波长。 传感器14-18中的一个或多个可以使用波分复用和/或时分复用沿光纤10轴向分布。
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公开(公告)号：US06782150B2
公开(公告)日：2004-08-24
申请号：US09740760
申请日：2000-11-29
申请人： Allen R. Davis , Daniel L. Gysling , Charles R. Winston , John M. Faustino , Rebecca S. McGuinn
发明人： Allen R. Davis , Daniel L. Gysling , Charles R. Winston , John M. Faustino , Rebecca S. McGuinn
IPC分类号： G02B600
CPC分类号： G01F1/668 , E21B47/102 , G01F1/666
摘要： An apparatus for non-intrusively sensing fluid flow within a pipe is provided. The apparatus includes a first sensing array for sensing acoustic signals traveling at the speed of sound through fluid flow within the pipe, a second sensing array for sensing local pressure variations traveling with the fluid flow, and a housing attached to the pipe for enclosing the sensing arrays. The first sensing array includes a plurality of first optical pressure sensors and the second sensing array includes a plurality of second optical pressure sensors.
摘要翻译： 提供了一种用于非侵入式地感测管内流体流动的装置。 该装置包括用于感测通过管内的流体流以声速传播的声信号的第一感测阵列，用于感测与流体流动一起行进的局部压力变化的第二感测阵列，以及附接到管道的壳体，用于封闭感测 阵列 第一感测阵列包括多个第一光学压力传感器，并且第二感测阵列包括多个第二光学压力传感器。
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3.发明授权Apparatus and method having an optical fiber disposed circumferentially around the pipe for measuring unsteady pressure within a pipe 有权具有围绕管道周向设置用于测量管内的不稳定压力的光纤的装置和方法公开(公告)号：US06959604B2
公开(公告)日：2005-11-01
申请号：US10224821
申请日：2002-08-21
CPC分类号： E21B47/06 , G01L1/246 , G01L11/025
摘要： A fiber optic pressure sensor for measuring unsteady pressures within a pipe include at least one optical fiber disposed circumferentially around a portion of a circumference of the pipe, which provides an optical signal indicative of the length of the optical fiber. An optical instrument measures the change in length of the optical fiber to determine the unsteady pressure within the pipe. The pressure sensor may include a plurality of optical fiber sections disposed circumferentially around a portion of the circumference of the pipe that are optically connected together by optical fiber sections disposed axially along the pipe. The optical fiber sections may include fiber Bragg gratings having substantially the same or different reflection wavelengths to permit for example the sensors to be axially distributed along the fiber using wavelength division multiplexing and/or time division multiplexing.
摘要翻译： 用于测量管道内的不稳定压力的光纤压力传感器包括至少一个围绕管道的圆周部分周向设置的光纤，其提供指示光纤长度的光学信号。 光学仪器测量光纤的长度变化，以确定管内的不稳定压力。 压力传感器可以包括围绕管的圆周的一部分周向设置的多个光纤段，其通过沿着管轴向设置的光纤段光学连接在一起。 光纤部分可以包括具有基本上相同或不同的反射波长的光纤布拉格光栅，以允许例如传感器使用波分复用和/或时分复用沿光纤轴向分布。
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4.发明授权公开(公告)号：US06601671B1
公开(公告)日：2003-08-05
申请号：US09612775
申请日：2000-07-10
申请人： Xiaomin Zhao , Francis X. Bostick , Jian-Qun Wu , Daniel L. Gysling , Peter C. Ogle , Allen R. Davis , Alan D. Kersey , Bob A. Hardage
发明人： Xiaomin Zhao , Francis X. Bostick , Jian-Qun Wu , Daniel L. Gysling , Peter C. Ogle , Allen R. Davis , Alan D. Kersey , Bob A. Hardage
IPC分类号： G10K1100
摘要： The present invention provides a new and unique method, sensor, and apparatus for performing a seismic survey of an earth formation in relation to a borehole. The method includes arranging at least one strain seismic sensor in conjunction with a borehole structure, and mechanically coupling the borehole structure to the borehole to allow seismic data to be accurately transferred to the sensor. The sensor is preferably a fiber optic sensor, including a Fiber Bragg Grating which may be coupled to a relevant borehole structure in a number of ways.
摘要翻译： 本发明提供了一种新的和独特的方法，传感器和装置，用于相对于钻孔执行地层的地震勘测。 该方法包括将至少一个应变地震传感器与钻孔结构相结合，并将钻孔结构机械耦合到钻孔，以使地震数据准确地传递到传感器。 传感器优选地是光纤传感器，其包括可以多种方式耦合到相关钻孔结构的光纤布拉格光栅。
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5.发明授权公开(公告)号：US06558036B2
公开(公告)日：2003-05-06
申请号：US09726062
申请日：2000-11-29
IPC分类号： G01K108
CPC分类号： G01K11/3206 , E21B47/065 , E21B47/123 , G01K1/143
摘要： An apparatus for sensing the temperature of a fluid being drawn from a well includes a pipe having a wall, a sensor mounted on the outer surface of the pipe wall, an insulator, and a housing attached to the pipe that encloses the sensor and the insulator. The fluid to be sensed is drawn from the well through the pipe. The thermal conductivity of the pipe wall is greater than that of the insulator.
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6.发明授权公开(公告)号：US06501067B2
公开(公告)日：2002-12-31
申请号：US09726060
申请日：2000-11-29
IPC分类号： G01J104
CPC分类号： G01F1/666 , G01D5/35316 , G01D5/35374
摘要： An apparatus for non-intrusively sensing fluid flow within a pipe is provided. The apparatus includes an array of sensors that include a plurality of optical fiber coils. The array of sensors senses the fluid flow inside the pipe. At least one optical reflective device is disposed between adjacent optical fiber coils. An isolation pad is disposed between each optical reflective device and the pipe.
摘要翻译： 提供了一种用于非侵入式地感测管内流体流动的装置。 该装置包括包括多个光纤线圈的传感器阵列。 传感器阵列检测管道内的流体流动。 至少一个光学反射装置设置在相邻的光纤线圈之间。 隔离垫设置在每个光反射装置和管之间。
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公开(公告)号：US06785004B2
公开(公告)日：2004-08-31
申请号：US09726059
申请日：2000-11-29
IPC分类号： G01B902
CPC分类号： G01D5/35383 , E21B47/102
摘要： An apparatus and method for interrogating fiber optic sensors non-intrusively sensing fluid flow within a pipe is provided. The apparatus includes a two-beam interferometer which comprises an optical circuit for generating a series of discrete light pulses that are directed at sensors positioned between pairs of low reflectivity fiber Bragg gratings. The successive light pulses are split into first light pulses and second light pulses, and the second light pulses are delayed a known time period relative to the first pulses. The first and second light pulses are combined onto a single optical fiber and directed through the low reflectivity gratings and the sensors positioned between the gratings. Reflected pulses from the series of pulses impinge on a photo receiver and interrogator, wherein the phase shift between the reflected first light pulses from a particular grating and the reflected second light pulses from the preceding grating, for each sensor are determined. Phase shifts from successive pulses for each sensor are compared, and a change in a measured parameter of the fluid is determined.
摘要翻译： 提供了一种用于询问光纤传感器非侵入式地感测管道内的流体流动的装置和方法。 该装置包括双光束干涉仪，其包括用于产生一系列离散光脉冲的光学电路，其被定向在位于低反射率光纤布拉格光栅对之间的传感器处。 连续的光脉冲被分成第一光脉冲和第二光脉冲，并且第二光脉冲相对于第一脉冲被延迟已知的时间周期。 第一和第二光脉冲被组合到单个光纤上并被引导通过位于光栅之间的低反射率光栅和传感器。 来自一系列脉冲的反射脉冲撞击光接收器和询问器，其中确定来自特定光栅的反射的第一光脉冲与来自前一光栅的反射的第二光脉冲之间对于每个传感器的相移。 比较每个传感器的连续脉冲的相移，并确定流体的测量参数的变化。
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公开(公告)号：US06278811B1
公开(公告)日：2001-08-21
申请号：US09399504
申请日：1999-09-20
申请人： Arthur D. Hay , Alan D. Kersey , Robert J. Maron , Phillip Edmund Pruett , Mark R. Fernald , Guy A. Daigle , F. Kevin Didden , Allen R. Davis , Michael A. Davis , Timothy J. Bailey
发明人： Arthur D. Hay , Alan D. Kersey , Robert J. Maron , Phillip Edmund Pruett , Mark R. Fernald , Guy A. Daigle , F. Kevin Didden , Allen R. Davis , Michael A. Davis , Timothy J. Bailey
IPC分类号： G02B600
CPC分类号： G01L11/025
摘要： A fiber optic Bragg grating pressure sensor particularly suited for measuring ambient pressure of a fluid includes a pressuring detecting device 12 such as a glass element whose elastic deformation is proportional to applied pressure. An optical fiber 28 with an integral first grating 33 is wrapped at least once around the device and has at least a portion of its length fused to the device 12 such that elastic deformation of the device 12 generates a corresponding axial strain in the fiber 28 and/or the grating 33 and thus a corresponding change of the fiber length and/or characteristic reflectance wavelength of the grating 33. A second grating 35 may be formed near the pressure detecting device 12 so as to sense ambient temperature but not be affected by deformation of the device 12 for temperature compensation. Also, the fiber 28 may have more than one grating or be doped at least between a pair of gratings 160,162, to form a fiber laser or a DFB fiber laser which lasing wavelength changes with changing pressure.
摘要翻译： 特别适用于测量流体环境压力的光纤布拉格光栅压力传感器包括加压检测装置12，例如玻璃元件，其弹性变形与施加的压力成比例。 具有集成的第一光栅33的光纤28至少缠绕在设备周围，并且其长度的至少一部分与设备12融合，使得设备12的弹性变形在纤维28中产生相应的轴向应变，并且 /或光栅33，从而光栅33的光纤长度和/或特征反射波长的相应变化。第二光栅35可以形成在压力检测装置12附近，以便感测环境温度但不受变形影响 的温度补偿装置12。 此外，光纤28可以具有多于一个光栅或者至少在一对光栅160,162之间被掺杂，以形成激光波长随着变化的压力而变化的光纤激光器或DFB光纤激光器。
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公开(公告)号：US4952534A
公开(公告)日：1990-08-28
申请号：US285087
申请日：1988-12-15
申请人： Allen R. Davis , Elbert A. Willis
发明人： Allen R. Davis , Elbert A. Willis
CPC分类号： B05D1/12 , F27D1/0009 , F27D1/1642
摘要： A gunnable plastic refractory is made by adding a hydrocolloid, for example a polysaccharide ether such as methylcellulose, to the refractory composition and adjusting the moisture content to be from about 4% to about 10%. The workability index of the refractory mix is from about 8% to about 30%. The refractory can be gunned without stoppages caused by clogging of hoses and the rebound rate is low.
摘要翻译： 通过将水胶体（例如多糖醚如甲基纤维素）加入到耐火材料组合物中并将水分含量调节至约4％至约10％来制备可喷射的塑料耐火材料。 耐火混合物的可加工性指数为约8％至约30％。 耐火材料可以在没有由软管堵塞引起的停机的情况下进行枪击，反弹率低。
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10.发明授权Method and apparatus for measuring a parameter of a fluid flowing within a pipe using an array of sensors 有权使用传感器阵列来测量在管道内流动的流体的参数的方法和装置公开(公告)号：US07110893B2
公开(公告)日：2006-09-19
申请号：US10964044
申请日：2004-10-12
申请人： Douglas H. Loose , Allen R. Davis
发明人： Douglas H. Loose , Allen R. Davis
IPC分类号： G06F19/00
CPC分类号： G01F1/3254
摘要： Various methods are described which increase the efficiency and accuracy of a signal processor in determining parameters of a fluid using signals output by a spatial array of sensors disposed along a pipe. In one aspect, parameters used for calculating the temporal Fourier transform of the pressure signals, specifically the amount or duration of the data that the windowing function is applied to and the temporal frequency range, are adjusted in response to the determined parameter. In another aspect, an initialization routine estimates flow velocity so the window length and temporal frequency range can be initially set prior to the full array processing. In another aspect, the quality of one or more of the parameters is determined and used to gate the output of the apparatus in the event of low confidence in the measurement and/or no flow conditions. In another aspect, a method for determining a convective ridge of the pressure signals in the k-ω plane is provided.
摘要翻译： 描述了各种方法，其增加信号处理器在使用由沿着管道设置的传感器的空间阵列输出的信号确定流体参数时的效率和精度。 在一个方面，响应于所确定的参数来调整用于计算压力信号的时间傅立叶变换的参数，具体地说，加窗功能被应用的数据量或持续时间和时间频率范围。 在另一方面，初始化程序估计流速，因此窗口长度和时间频率范围可以在完整阵列处理之前被初始化。 在另一方面，一个或多个参数的质量被确定并且用于在测量和/或没有流动条件下置信度低的情况下对设备的输出进行门控。 在另一方面，提供了一种用于确定k-ω平面中的压力信号的对流脊的方法。
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