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。

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。

公开(公告)号：US06351987B1

公开(公告)日：2002-03-05

申请号：US09548792

申请日：2000-04-13

申请人： Charles R. Winston ,  Daniel L. Gysling ,  Mark R. Myers ,  Alan D. Kersey ,  Rebecca S. McGuinn

发明人： Charles R. Winston ,  Daniel L. Gysling ,  Mark R. Myers ,  Alan D. Kersey ,  Rebecca S. McGuinn

IPC分类号： G01N1100

CPC分类号： G01L19/0092 ,  E21B47/00 ,  G01D5/35383 ,  G01L9/0007 ,  G01L11/025 ,  G01L11/04 ,  G01L19/0023 ,  G01N33/2823

摘要： A DC pressure and temperature sensor system for sensing and measuring the DC pressure and temperature of a production fluid (such as oil, gas and water mixtures) in tubing, such as tubing used to extract production fluid from a drilled site. The sensor system includes at least one fluid sensor, but sometimes two. Only one is needed if either the DC pressure or temperature of the production fluid (but not both) is provided by an independent measurement. In general, though, the sensor system includes: a first and second fluid sensor, the first using a first sensing material, and the second using a second sensing material in which sound travels at a rate that depends on the DC pressure and temperature of the second sensing material in a measurably different way than for the first sensing material. Each sensing material is coupled to the production fluid, preferably via a thin-walled membrane, so as to be at a DC pressure and temperature that is, preferably, the same as for the production fluid. Each fluid sensor is used to provide information about the speed of sound in its sensing material, and since the speed of sound depends on the DC pressure and temperature of the sensing material, in providing information about the speed of sound, each fluid sensor also provides information about the DC pressure and temperature of the sensing material, which is either the same as that of the production fluid or can be correlated to that of the production fluid.

摘要翻译： 直流压力和温度传感器系统，用于感测和测量管道中的生产流体（如油，气体和水混合物）的直流压力和温度，例如用于从钻孔部位提取生产流体的管道。 传感器系统包括至少一个流体传感器，但有时两个。 如果生产流体（但不是两者）的直流压力或温度是通过独立测量提供的，则只需要一个。 然而，通常，传感器系统包括：第一和第二流体传感器，第一和第二流体传感器，第一和第二流体传感器，第一和第二流体传感器，第一和第二流体传感器，第一和第二流体传感器，第一和第二流体传感器， 第二感测材料以与第一感测材料相比可测量的方式不同。 每个感测材料优选通过薄壁膜与生产流体相连，以便处于与制备流体相同的DC压力和温度。 每个流体传感器用于提供关于其感测材料中的声速的信息，并且由于声音的速度取决于传感材料的直流压力和温度，在提供关于声速的信息时，每个流体传感器还提供 关于传感材料的直流压力和温度的信息，其与生产流体的直流压力和温度相同，或者可以与生产流体的相关。

公开(公告)号：US06536291B1

公开(公告)日：2003-03-25

申请号：US09345827

申请日：1999-07-02

申请人： Daniel L. Gysling ,  Rebecca S. McGuinn ,  Charles R. Winston

发明人： Daniel L. Gysling ,  Rebecca S. McGuinn ,  Charles R. Winston

IPC分类号： G01F134

CPC分类号： G01F1/7086 ,  G01F1/34 ,  G01F1/704

摘要： A fiber optic strain gauge based flow rate measurement system includes two measurement regions located an average axial distance &Dgr;X apart along the pipe, the first measurement region having two fiber optic strain gauges located a distance X1 apart, and the second measurement region having two other fiber optic strain gauges located a distance X2 apart, each capable of measuring the unsteady pressure in the pipe 12. Signals from each pair of fiber optic strain gauges are differenced by summers to form spatial wavelength filters. Each spatial filter filters out acoustic pressure disturbances Pacoustic and other long wavelength pressure disturbances in the pipe and passes short-wavelength low-frequency vortical pressure disturbances Pvortical associated with the vortical flow field. The spatial filters provide signals to band pass filters that filter out high frequency signals. The Pvortical-dominated filtered signals from the two sensing regions are cross-correlated to determine a time delay &tgr; between the two sensing locations which is divided into the distance &Dgr;X to obtain a convection velocity Uc(t) that is related to an average flow rate of the fluid (i.e., one or more liquids and/or gases) flowing in the pipe 12. The invention may also be configured detect the velocity of any desired inhomogeneous pressure field in the flow.

摘要翻译： 基于光纤应变计的流量测量系统包括沿着管道分开的平均轴向距离DELTAX的两个测量区域，第一测量区域具有位于距离X1的两个光纤应变计，并且第二测量区域具有两个另外的光纤 光学应变计位于距离X2的距离处，每个能量测量管12中的不稳定压力。来自每对光纤应变仪的信号由夏天差分以形成空间波长滤波器。 每个空间滤波器滤除声压干扰管道中的声波和其他长波长压力干扰，并通过短波长低频涡旋压力扰动与涡旋流场相关的涡流。 空间滤波器为滤除高频信号的带通滤波器提供信号。 来自两个感测区域的以波特率为主的滤波信号是相互关联的，以确定两个感测位置之间的时间延迟τ，其被分成距离DELTAX以获得与平均流量相关的对流速度Uc（t） 流体（即，一个或多个液体和/或气体）在管道12中流动。本发明还可以被配置为检测流中任何期望的不均匀压力场的速度。

公开(公告)号：US06435030B1

公开(公告)日：2002-08-20

申请号：US09344070

申请日：1999-06-25

申请人： Daniel L. Gysling ,  Rebecca S. McGuinn

发明人： Daniel L. Gysling ,  Rebecca S. McGuinn

IPC分类号： G01N2900

CPC分类号： G01F1/662 ,  E21B47/101 ,  G01F1/74 ,  G01H3/00 ,  G01N2291/02836

摘要： A pipe 16 having a produced fluid 18 (liquid an/or gas) and at least two acoustic pressure sensors 20-24, is provided with a cylindrical sleeve 30 attached to the pipe 16 at two locations around a sensing region where the sensors 20-24 are located, the sleeve forming a closed cavity 32 filled with a fluid (or material) having an acoustic impedance (&rgr;c2) that is much less than the acoustic impedance (&rgr;c1) of the produced fluid 18 in the pipe 16 (i.e., &rgr;c2

摘要翻译： 具有产生的流体18（液体或/或气体）和至少两个声压传感器20-24的管道16设置有圆柱形套筒30，圆柱形套筒30在感测区域周围的两个位置处附接到管道16，传感器20- 如图24所示，套筒形成封闭的空腔32，该空腔充满流体（或材料），该流体（或材料）的声阻抗（rhoc2）远小于管16中产生的流体18的声阻抗（rhoc1）（即rhoc2 “rhoc1”，其导致套筒20隔离声学传感器20,22,24受到空腔32的声学特性和管16外部的声学特性的影响。对于大多数有效的声学，空腔32可被抽真空 。