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NO20006621D0 - Ikke-inntrengende fiberoptisk trykksensor for måling av ustabilt trykk i et rör - Google Patents

Ikke-inntrengende fiberoptisk trykksensor for måling av ustabilt trykk i et rör

Info

Publication number
NO20006621D0
NO20006621D0 NO20006621A NO20006621A NO20006621D0 NO 20006621 D0 NO20006621 D0 NO 20006621D0 NO 20006621 A NO20006621 A NO 20006621A NO 20006621 A NO20006621 A NO 20006621A NO 20006621 D0 NO20006621 D0 NO 20006621D0
Authority
NO
Norway
Prior art keywords
tube
fiber optic
pressure sensor
pressure
penetrating fiber
Prior art date
Application number
NO20006621A
Other languages
English (en)
Other versions
NO322412B1 (no
NO20006621L (no
Inventor
Rebecca S Mcguinn
Daniel L Gysling
Charles R Winston
Allen R Davis
John M Faustino
Original Assignee
Cidra Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/344,093 external-priority patent/US6450037B1/en
Application filed by Cidra Corp filed Critical Cidra Corp
Publication of NO20006621D0 publication Critical patent/NO20006621D0/no
Publication of NO20006621L publication Critical patent/NO20006621L/no
Publication of NO322412B1 publication Critical patent/NO322412B1/no

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/06Measuring temperature or pressure
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00Measuring force or stress, in general
    • G01L1/24Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • G01L1/242Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
    • G01L1/246Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using integrated gratings, e.g. Bragg gratings
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L11/00Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
    • G01L11/02Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by optical means
    • G01L11/025Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by optical means using a pressure-sensitive optical fibre

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geophysics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Measuring Fluid Pressure (AREA)
  • Length Measuring Devices By Optical Means (AREA)
NO20006621A 1998-06-26 2000-12-22 Ikke-inntrengende fiberoptisk trykksensor for maling av ustabilt trykk i et ror NO322412B1 (no)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10552598A 1998-06-26 1998-06-26
US09/344,093 US6450037B1 (en) 1998-06-26 1999-06-25 Non-intrusive fiber optic pressure sensor for measuring unsteady pressures within a pipe
PCT/US1999/014588 WO2000000799A1 (en) 1998-06-26 1999-06-28 Non-intrusive fiber optic pressure sensor for measuring unsteady pressures within a pipe

Publications (3)

Publication Number Publication Date
NO20006621D0 true NO20006621D0 (no) 2000-12-22
NO20006621L NO20006621L (no) 2001-02-07
NO322412B1 NO322412B1 (no) 2006-10-02

Family

ID=26802671

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20006621A NO322412B1 (no) 1998-06-26 2000-12-22 Ikke-inntrengende fiberoptisk trykksensor for maling av ustabilt trykk i et ror

Country Status (9)

Country Link
US (1) US6959604B2 (no)
EP (1) EP1099101B1 (no)
CN (1) CN1140785C (no)
AU (1) AU754039B2 (no)
CA (1) CA2335469C (no)
DE (1) DE69927274T2 (no)
NO (1) NO322412B1 (no)
RU (1) RU2001102591A (no)
WO (1) WO2000000799A1 (no)

Families Citing this family (104)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6785004B2 (en) 2000-11-29 2004-08-31 Weatherford/Lamb, Inc. Method and apparatus for interrogating fiber optic sensors
US6501067B2 (en) * 2000-11-29 2002-12-31 Weatherford/Lamb, Inc. Isolation pad for protecting sensing devices on the outside of a conduit
BE1014373A6 (nl) * 2001-09-19 2003-09-02 Voet Marc Werkwijze en sensor voor het bewaken van een naad.
US6971259B2 (en) * 2001-11-07 2005-12-06 Weatherford/Lamb, Inc. Fluid density measurement in pipes using acoustic pressures
US7059172B2 (en) 2001-11-07 2006-06-13 Weatherford/Lamb, Inc. Phase flow measurement in pipes using a density meter
US6870975B1 (en) 2001-11-14 2005-03-22 Fiber Optic Systems Technology, Inc. Fiber optic sensor usable over wide range of gage lengths
US6804008B1 (en) 2001-11-14 2004-10-12 Fiber Optic Systems Technology, Inc. Fiber optic sensing instrument and system with fiber of adjustable optical path length and method of using it
US7032432B2 (en) * 2002-01-23 2006-04-25 Cidra Corporation Apparatus and method for measuring parameters of a mixture having liquid droplets suspended in a vapor flowing in a pipe
US7474966B2 (en) * 2002-01-23 2009-01-06 Expro Meters. Inc Apparatus having an array of piezoelectric film sensors for measuring parameters of a process flow within a pipe
US7328624B2 (en) * 2002-01-23 2008-02-12 Cidra Corporation Probe for measuring parameters of a flowing fluid and/or multiphase mixture
US7359803B2 (en) * 2002-01-23 2008-04-15 Cidra Corporation Apparatus and method for measuring parameters of a mixture having solid particles suspended in a fluid flowing in a pipe
US7275421B2 (en) * 2002-01-23 2007-10-02 Cidra Corporation Apparatus and method for measuring parameters of a mixture having solid particles suspended in a fluid flowing in a pipe
US6813403B2 (en) 2002-03-14 2004-11-02 Fiber Optic Systems Technology, Inc. Monitoring of large structures using brillouin spectrum analysis
US7194913B2 (en) * 2002-08-26 2007-03-27 Shell Oil Company Apparatuses and methods for monitoring stress in steel catenary risers
AU2003287645A1 (en) * 2002-11-12 2004-06-03 Cidra Corporation An apparatus having an array of piezoelectric film sensors for measuring parameters of a process flow within a pipe
US7165464B2 (en) * 2002-11-15 2007-01-23 Cidra Corporation Apparatus and method for providing a flow measurement compensated for entrained gas
US7139667B2 (en) * 2002-11-22 2006-11-21 Cidra Corporation Method for calibrating a volumetric flow meter having an array of sensors
EP1585944B1 (en) * 2003-01-13 2010-09-08 Expro Meters, Inc. Apparatus and method using an array of ultrasonic sensors for determining the velocity of a fluid within a pipe
WO2004063741A2 (en) * 2003-01-13 2004-07-29 Cidra Corporation Apparatus for measuring parameters of a flowing multiphase fluid mixture
WO2004065913A2 (en) 2003-01-21 2004-08-05 Cidra Corporation An apparatus and method of measuring gas volume fraction of a fluid flowing within a pipe
US7343818B2 (en) * 2003-01-21 2008-03-18 Cidra Corporation Apparatus and method of measuring gas volume fraction of a fluid flowing within a pipe
US7058549B2 (en) * 2003-01-21 2006-06-06 C1Dra Corporation Apparatus and method for measuring unsteady pressures within a large diameter pipe
CN100480639C (zh) 2003-03-04 2009-04-22 塞德拉公司 一种具有用于测量在管道内流动的流体流的参数的多带传感器组件的设备
FR2854689B1 (fr) * 2003-05-07 2005-09-02 Commissariat Energie Atomique Dispositif, systeme et procede de mesure de deformations mecaniques et/ou thermiques uniaxiales au moyen d'une fibre optique a reseau de bragg
US7197942B2 (en) 2003-06-05 2007-04-03 Cidra Corporation Apparatus for measuring velocity and flow rate of a fluid having a non-negligible axial mach number using an array of sensors
WO2005001394A2 (en) * 2003-06-06 2005-01-06 Cidra Corporation A portable flow measurement apparatus having an array of sensors
WO2005001586A2 (en) * 2003-06-24 2005-01-06 Cidra Corporation System and method for operating a flow process
US7245385B2 (en) * 2003-06-24 2007-07-17 Cidra Corporation Characterizing unsteady pressures in pipes using optical measurement devices
WO2005054789A1 (en) * 2003-07-08 2005-06-16 Cidra Corporation Method and apparatus for measuring characteristics of core-annular flow
CA2532468C (en) 2003-07-15 2013-04-23 Cidra Corporation A dual function flow measurement apparatus having an array of sensors
US7295933B2 (en) * 2003-07-15 2007-11-13 Cidra Corporation Configurable multi-function flow measurement apparatus having an array of sensors
US7134320B2 (en) * 2003-07-15 2006-11-14 Cidra Corporation Apparatus and method for providing a density measurement augmented for entrained gas
CA2537800C (en) * 2003-08-08 2013-02-19 Cidra Corporation Piezocable based sensor for measuring unsteady pressures inside a pipe
US7237440B2 (en) * 2003-10-10 2007-07-03 Cidra Corporation Flow measurement apparatus having strain-based sensors and ultrasonic sensors
US7330797B2 (en) * 2004-03-10 2008-02-12 Cidra Corporation Apparatus and method for measuring settlement of solids in a multiphase flow
US20050246111A1 (en) * 2004-03-10 2005-11-03 Gysling Daniel L Method and apparatus for measuring parameters of a stratified flow
US7367239B2 (en) * 2004-03-23 2008-05-06 Cidra Corporation Piezocable based sensor for measuring unsteady pressures inside a pipe
US7426852B1 (en) 2004-04-26 2008-09-23 Expro Meters, Inc. Submersible meter for measuring a parameter of gas hold-up of a fluid
EP1751503B1 (en) * 2004-05-17 2011-10-12 Expro Meters, Inc. Apparatus and method for measuring the composition of a mixture flowing in a pipe
US7480056B2 (en) 2004-06-04 2009-01-20 Optoplan As Multi-pulse heterodyne sub-carrier interrogation of interferometric sensors
US7109471B2 (en) 2004-06-04 2006-09-19 Weatherford/Lamb, Inc. Optical wavelength determination using multiple measurable features
WO2006112878A2 (en) 2004-09-16 2006-10-26 Cidra Corporation Apparatus and method for providing a fluid cut measurement of a multi-liquid mixture compensated for entrained gas
BRPI0517922A (pt) * 2004-11-03 2008-10-21 Shell Int Research sistema para retroativamente equipar um sensor e sistema de comunicação de sensor para monitorar um elemento estrutural instalado, e, método para monitorar mudanças fìsicas em um elemento submarino
US7389687B2 (en) * 2004-11-05 2008-06-24 Cidra Corporation System for measuring a parameter of an aerated multi-phase mixture flowing in a pipe
DE602004015820D1 (de) 2004-12-16 2008-09-25 Insensys Oil & Gas Ltd Vorrichtung zur Überwachung von Spannungen in einer Verbindung von Strukturen
US7962293B2 (en) 2005-03-10 2011-06-14 Expro Meters, Inc. Apparatus and method for providing a stratification metric of a multiphase fluid flowing within a pipe
WO2006099342A1 (en) * 2005-03-10 2006-09-21 Cidra Corporation An industrial flow meter having an accessible digital interface
CA2912218C (en) * 2005-05-16 2018-02-27 Expro Meters, Inc. Method and apparatus for detecting and characterizing particles in a multiphase fluid
BRPI0610244A2 (pt) * 2005-05-27 2010-06-08 Cidra Corp método e aparelho para medição de um parametro de um fluxo multifásico
US7526966B2 (en) 2005-05-27 2009-05-05 Expro Meters, Inc. Apparatus and method for measuring a parameter of a multiphase flow
US7603916B2 (en) 2005-07-07 2009-10-20 Expro Meters, Inc. Wet gas metering using a differential pressure and a sonar based flow meter
ATE526562T1 (de) * 2005-07-07 2011-10-15 Cidra Corp Feuchtgasmessung unter verwendung eines differentialdruckbasierten durchflussmeters mit einem sonarbasierten durchflussmeter
WO2007009097A1 (en) 2005-07-13 2007-01-18 Cidra Corporation Method and apparatus for measuring parameters of a fluid flow using an array of sensors
WO2007061932A1 (en) 2005-11-21 2007-05-31 Shell Internationale Research Maatschappij B.V. Method for monitoring fluid properties
JP5362362B2 (ja) * 2005-12-20 2013-12-11 シュルンベルジェ ホールディングス リミテッド ガスハイドレートを含む炭化水素含有層内の坑井ケーシングへの粒状物の侵入を監視するための方法及びシステム
WO2007072172A1 (en) 2005-12-20 2007-06-28 Schlumberger Technology B.V. Method and system for development of hydrocarbon bearing formations including depressurization of gas hydrates
GB2435689B (en) * 2006-03-02 2009-04-08 Insensys Ltd Structural monitoring
WO2007136788A2 (en) * 2006-05-16 2007-11-29 Cidra Corporation Apparatus and method for determining a parameter in a wet gas flow
US7624650B2 (en) 2006-07-27 2009-12-01 Expro Meters, Inc. Apparatus and method for attenuating acoustic waves propagating within a pipe wall
US7624651B2 (en) * 2006-10-30 2009-12-01 Expro Meters, Inc. Apparatus and method for attenuating acoustic waves in pipe walls for clamp-on ultrasonic flow meter
US7673526B2 (en) * 2006-11-01 2010-03-09 Expro Meters, Inc. Apparatus and method of lensing an ultrasonic beam for an ultrasonic flow meter
WO2008060942A2 (en) 2006-11-09 2008-05-22 Cidra Corporation Apparatus and method for measuring a fluid flow parameter within an internal passage of an elongated body
CN100533086C (zh) * 2006-12-07 2009-08-26 中国科学院半导体研究所 一种光纤光栅压强传感器及其使用方法
US7826288B2 (en) * 2007-03-09 2010-11-02 International Business Machines Corporation Device threshold calibration through state dependent burn-in
US7729567B2 (en) * 2007-05-14 2010-06-01 The Hong Kong Polytechnic University Fiber optic transducer for simultaneous pressure and temperature measurement in fluid flow
WO2008154604A1 (en) * 2007-06-11 2008-12-18 Bmt Scientific Marine Services Inc, Device and method for providing strain measurements of insulated pipes
GB2456300B (en) * 2008-01-08 2010-05-26 Schlumberger Holdings Monitoring system for pipelines or risers in floating production installations
US8736822B2 (en) * 2008-01-17 2014-05-27 Halliburton Energy Services, Inc. Apparatus and method for detecting pressure signals
WO2009091413A1 (en) 2008-01-17 2009-07-23 Halliburton Energy Services Inc. Apparatus and method for detecting pressure signals
US20110109912A1 (en) 2008-03-18 2011-05-12 Halliburton Energy Services , Inc. Apparatus and method for detecting pressure signals
US8061186B2 (en) 2008-03-26 2011-11-22 Expro Meters, Inc. System and method for providing a compositional measurement of a mixture having entrained gas
US7903907B1 (en) 2008-04-10 2011-03-08 Intelligent Fiber Optic Systems, Inc. Force and deflection sensor with shell membrane and optical gratings and method of manufacture
US8375798B2 (en) * 2008-06-17 2013-02-19 Robert C. Anderson External pressure measuring device
GB2473380A (en) 2008-06-26 2011-03-09 Schlumberger Holdings System and method for monitoring bending of a flexible riser
US8973434B2 (en) * 2008-08-27 2015-03-10 Shell Oil Company Monitoring system for well casing
WO2010106336A1 (en) * 2009-03-18 2010-09-23 Schlumberger Holdings Limited System and method for uniform and localized wall thickness measurement using fiber optic sensors
GB2516779B (en) 2009-05-27 2015-04-01 Silixa Ltd Optical sensor
US20140290374A1 (en) * 2013-03-28 2014-10-02 David V. Brower Apparatus to Monitor Flow Assurance Properties in Conduits
GB2475257A (en) 2009-11-11 2011-05-18 Ably As A method and apparatus for the measurement of flow in gas or oil pipes
GB2496561B (en) * 2010-09-01 2015-12-02 Schlumberger Holdings Pipeline with integrated fiber optic cable
EP2643757A1 (en) 2010-11-23 2013-10-02 Bmt Scientific Marine Services Inc, Remotely accessible subsea strain sensor assemblies and methods
US9109968B2 (en) * 2011-01-20 2015-08-18 Omni-Sens Sa Strain sensor apparatus and method of strain sensing
CN102589767B (zh) * 2012-02-24 2013-08-07 山东大学 岩芯内应力场测试仪及其使用方法
CN102587897B (zh) * 2012-03-16 2015-01-21 山东省科学院激光研究所 非浸入式井下光纤流量监测系统
US9719309B2 (en) * 2012-04-26 2017-08-01 David V. Brower Instrumented strakes and fairings for subsea riser and pipeline monitoring
WO2015026332A1 (en) 2013-08-20 2015-02-26 Halliburton Energy Services, Inc. Downhole drilling optimization collar with fiber optics
CA3145585A1 (en) 2014-07-04 2016-01-07 Hifi Engineering Inc. A device and system for detecting dynamic strain
WO2016000064A1 (en) 2014-07-04 2016-01-07 Hifi Engineering Inc. Method and system for detecting dynamic strain
CN106793878B (zh) 2014-09-30 2018-07-06 深圳市大耳马科技有限公司 姿态和生命体征监测系统及方法
GB2553679B (en) * 2015-04-13 2021-07-28 Halliburton Energy Services Inc Modulating downhole reflector
US10746208B2 (en) 2015-12-18 2020-08-18 Hifi Engineering Inc. Method and system for non-intrusive pipeline testing
KR20170086264A (ko) * 2016-01-18 2017-07-26 한국전자통신연구원 Twdm 기반 물리량 측정 장치 및 방법
CN105890679B (zh) * 2016-06-20 2019-11-22 天津大学 局部弯曲导流的光纤法珀式流量测试方法
CN106441674A (zh) * 2016-10-31 2017-02-22 中国核动力研究设计院 一种光纤式测力传感系统及测力方法
CN106545749A (zh) * 2016-12-20 2017-03-29 上海至纯洁净系统科技股份有限公司 一种液态源供应装置
CN107990153A (zh) * 2017-12-25 2018-05-04 北京市热力工程设计有限责任公司 一种带光缆的热力管道
DE102018105703A1 (de) 2018-03-13 2019-09-19 Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum - GFZ Stiftung des Öffentlichen Rechts des Landes Brandenburg Verfahren und System zur Überwachung eines Materials und/oder einer Vorrichtung in einem Bohrloch unter Verwendung eines faseroptischen Messkabels
WO2019237170A1 (pt) * 2018-06-11 2019-12-19 Faculdades Católicas Conjunto e método para medição da vazão de fluido em tubulações
CN109520666B (zh) * 2019-01-03 2020-07-14 大连理工大学 一种管道内部压强的无损监测方法
CA3128927A1 (en) * 2019-02-07 2020-08-13 Hifi Engineering Inc. Methods of wrapping optical fiber around a fluid conduit
CN113324694B (zh) * 2020-02-29 2025-01-03 潍坊嘉腾液压技术有限公司 一种鱼型光纤光栅大量程压力传感器
CN112944222A (zh) * 2021-03-30 2021-06-11 上海传输线研究所(中国电子科技集团公司第二十三研究所) 一种适用于长距离海管泄露监测的传感器及其监测方法
CN113970401B (zh) * 2021-12-22 2022-04-01 季华实验室 一种管道压力传感器
DE102023208721A1 (de) * 2023-09-08 2024-09-05 Carl Zeiss Smt Gmbh Sensorvorrichtung mit Drucksensor, Verfahren zum Erfassen einer Druckänderung und Projektionsbelichtungsanlage

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4360272A (en) * 1980-03-20 1982-11-23 Optelecom, Inc. Fiber optic energy sensor and optical demodulation system and methods of making same
US5218197A (en) * 1991-05-20 1993-06-08 The United States Of America As Represented By The Secretary Of The Navy Method and apparatus for the non-invasive measurement of pressure inside pipes using a fiber optic interferometer sensor
US5317544A (en) * 1992-11-09 1994-05-31 Litton Systems, Inc. Multiple segment fiber optic hydrophone
US5845033A (en) * 1996-11-07 1998-12-01 The Babcock & Wilcox Company Fiber optic sensing system for monitoring restrictions in hydrocarbon production systems
US6004639A (en) * 1997-10-10 1999-12-21 Fiberspar Spoolable Products, Inc. Composite spoolable tube with sensor
US6191414B1 (en) * 1998-06-05 2001-02-20 Cidra Corporation Composite form as a component for a pressure transducer
US6450037B1 (en) * 1998-06-26 2002-09-17 Cidra Corporation Non-intrusive fiber optic pressure sensor for measuring unsteady pressures within a pipe
DE69923783D1 (de) * 1998-12-04 2005-03-24 Weatherford Lamb Drucksensor mit bragg-gitter

Also Published As

Publication number Publication date
WO2000000799A8 (en) 2000-07-06
US20030038231A1 (en) 2003-02-27
CA2335469A1 (en) 2000-01-06
WO2000000799A9 (en) 2000-08-03
DE69927274T2 (de) 2006-06-22
DE69927274D1 (de) 2005-10-20
CA2335469C (en) 2009-06-09
EP1099101A1 (en) 2001-05-16
NO322412B1 (no) 2006-10-02
AU5457799A (en) 2000-01-17
CN1140785C (zh) 2004-03-03
CN1307678A (zh) 2001-08-08
US6959604B2 (en) 2005-11-01
NO20006621L (no) 2001-02-07
WO2000000799A1 (en) 2000-01-06
RU2001102591A (ru) 2003-03-10
AU754039B2 (en) 2002-10-31
EP1099101B1 (en) 2005-09-14

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