NO20032311D0 - Fremgangsmåte og system for måling av lydhastigheten i en v¶ske i et v¶skefylt rör - Google Patents

Fremgangsmåte og system for måling av lydhastigheten i en v¶ske i et v¶skefylt rör

Info

Publication number
NO20032311D0
NO20032311D0 NO20032311A NO20032311A NO20032311D0 NO 20032311 D0 NO20032311 D0 NO 20032311D0 NO 20032311 A NO20032311 A NO 20032311A NO 20032311 A NO20032311 A NO 20032311A NO 20032311 D0 NO20032311 D0 NO 20032311D0
Authority
NO
Norway
Prior art keywords
liquid
measuring
sound velocity
filled tube
filled
Prior art date
Application number
NO20032311A
Other languages
English (en)
Other versions
NO329870B1 (no
NO20032311L (no
Inventor
Daniel L Gysling
Alan D Kersey
James D Paduano
Original Assignee
Weatherford Lamb
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
Application filed by Weatherford Lamb filed Critical Weatherford Lamb
Publication of NO20032311D0 publication Critical patent/NO20032311D0/no
Publication of NO20032311L publication Critical patent/NO20032311L/no
Publication of NO329870B1 publication Critical patent/NO329870B1/no

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02Analysing fluids
    • G01N29/024Analysing fluids by measuring propagation velocity or propagation time of acoustic waves
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/4472Mathematical theories or simulation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/46Processing the detected response signal, e.g. electronic circuits specially adapted therefor by spectral analysis, e.g. Fourier analysis or wavelet analysis
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/28Processing seismic data, e.g. for interpretation or for event detection
    • G01V1/30Analysis
    • G01V1/303Analysis for determining velocity profiles or travel times
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/02Indexing codes associated with the analysed material
    • G01N2291/028Material parameters
    • G01N2291/02872Pressure
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/10Number of transducers
    • G01N2291/106Number of transducers one or more transducer arrays

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Mathematical Physics (AREA)
  • Acoustics & Sound (AREA)
  • Remote Sensing (AREA)
  • Mathematical Analysis (AREA)
  • Algebra (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Pipeline Systems (AREA)
NO20032311A 2000-12-04 2003-05-22 Fremgangsmåte og system for å bestemme lydens hastighet gjennom et fluid i et rør NO329870B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25099700P 2000-12-04 2000-12-04
PCT/GB2001/005352 WO2002046737A2 (en) 2000-12-04 2001-12-04 Method and system for determining the speed of sound in a fluid within a conduit

Publications (3)

Publication Number Publication Date
NO20032311D0 true NO20032311D0 (no) 2003-05-22
NO20032311L NO20032311L (no) 2003-07-18
NO329870B1 NO329870B1 (no) 2011-01-17

Family

ID=22950050

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20032311A NO329870B1 (no) 2000-12-04 2003-05-22 Fremgangsmåte og system for å bestemme lydens hastighet gjennom et fluid i et rør

Country Status (7)

Country Link
US (1) US6587798B2 (no)
EP (1) EP1356272B1 (no)
AU (1) AU2002220879A1 (no)
CA (1) CA2428336C (no)
DE (1) DE60103781T2 (no)
NO (1) NO329870B1 (no)
WO (1) WO2002046737A2 (no)

Families Citing this family (96)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
US7328624B2 (en) * 2002-01-23 2008-02-12 Cidra Corporation Probe for measuring parameters of a flowing fluid and/or multiphase mixture
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
CA2486732C (en) * 2002-04-10 2012-10-02 Cidra Corporation Probe for measuring parameters of a flowing fluid and/or multiphase mixture
US7181955B2 (en) * 2002-08-08 2007-02-27 Weatherford/Lamb, Inc. Apparatus and method for measuring multi-Phase flows in pulp and paper industry applications
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
US7096719B2 (en) * 2003-01-13 2006-08-29 Cidra Corporation Apparatus for measuring parameters of a flowing multiphase mixture
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
CA2514696C (en) * 2003-01-21 2012-12-11 Cidra Corporation Measurement of entrained and dissolved gases in process flow lines
WO2004065912A2 (en) * 2003-01-21 2004-08-05 Cidra Corporation Apparatus and method for measuring unsteady pressures within a large diameter pipe
US20060048583A1 (en) * 2004-08-16 2006-03-09 Gysling Daniel L Total gas meter using speed of sound and velocity measurements
ATE413591T1 (de) * 2003-01-21 2008-11-15 Expro Meters Inc Vorrichtung und verfahren zur messung der gasvolumenfraktion eines in einem rohr strömenden fluids
WO2004079306A1 (en) * 2003-03-04 2004-09-16 Cidra Corporation An apparatus having a multi-band sensor assembly for measuring a parameter of a fluid flow flowing within a pipe
WO2004109239A2 (en) * 2003-06-05 2004-12-16 Cidra Corporation Apparatus for measuring velocity and flow rate of a fluid having a non-negligible axial mach number using an array of sensors
US7121152B2 (en) * 2003-06-06 2006-10-17 Cidra Corporation Portable flow measurement apparatus having an array of sensors
US7197938B2 (en) * 2003-06-24 2007-04-03 Cidra Corporation Contact-based transducers for characterizing unsteady pressures in pipes
US20050050956A1 (en) * 2003-06-24 2005-03-10 Gysling Daniel L. Contact-based transducers for characterizing unsteady pressures in pipes
WO2005003695A1 (en) * 2003-06-24 2005-01-13 Cidra Corporation Characterizing unsteady pressures in pipes using optical measurement devices
CA2530596C (en) * 2003-06-24 2013-05-21 Cidra Corporation System and method for operating a flow process
WO2005054789A1 (en) * 2003-07-08 2005-06-16 Cidra Corporation Method and apparatus for measuring characteristics of core-annular flow
WO2005010468A2 (en) * 2003-07-15 2005-02-03 Cidra Corporation A 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
US7299705B2 (en) * 2003-07-15 2007-11-27 Cidra Corporation Apparatus and method for augmenting a Coriolis meter
WO2005010469A2 (en) * 2003-07-15 2005-02-03 Cidra Corporation A dual function flow measurement apparatus having an array of sensors
US7152460B2 (en) * 2003-07-15 2006-12-26 Cidra Corporation Apparatus and method for compensating a coriolis meter
US7882750B2 (en) * 2003-08-01 2011-02-08 Cidra Corporate Services, Inc. Method and apparatus for measuring parameters of a fluid flowing within a pipe using a configurable array of sensors
US7322251B2 (en) * 2003-08-01 2008-01-29 Cidra Corporation Method and apparatus for measuring a parameter of a high temperature fluid flowing within a pipe using an array of piezoelectric based flow sensors
WO2005012843A2 (en) 2003-08-01 2005-02-10 Cidra Corporation Method and apparatus for measuring parameters of a fluid flowing within a pipe using a configurable array of sensors
US7308820B2 (en) * 2003-08-08 2007-12-18 Cidra Corporation Piezocable based sensor for measuring unsteady pressures inside a pipe
US7110893B2 (en) * 2003-10-09 2006-09-19 Cidra Corporation Method and apparatus for measuring a parameter of a fluid flowing within a pipe using an array of sensors
US7237440B2 (en) * 2003-10-10 2007-07-03 Cidra Corporation Flow measurement apparatus having strain-based sensors and ultrasonic sensors
US7171315B2 (en) * 2003-11-25 2007-01-30 Cidra Corporation Method and apparatus for measuring a parameter of a fluid flowing within a pipe using sub-array processing
WO2005059479A1 (en) * 2003-12-11 2005-06-30 Cidra Corporation Method and apparatus for determining a quality metric of a measurement of a fluid parameter
US7330797B2 (en) * 2004-03-10 2008-02-12 Cidra Corporation Apparatus and method for measuring settlement of solids in a multiphase flow
AU2005220972B2 (en) * 2004-03-10 2010-12-23 Cidra Corporate Services, Inc. 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
US7707143B2 (en) * 2004-06-14 2010-04-27 International Business Machines Corporation Systems, methods, and computer program products that automatically discover metadata objects and generate multidimensional models
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
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
US7561203B2 (en) * 2005-01-10 2009-07-14 Nokia Corporation User input device
WO2006099342A1 (en) * 2005-03-10 2006-09-21 Cidra Corporation An industrial flow meter having an accessible digital interface
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
US7440873B2 (en) * 2005-03-17 2008-10-21 Expro Meters, Inc. Apparatus and method of processing data to improve the performance of a flow monitoring system
CA2912218C (en) * 2005-05-16 2018-02-27 Expro Meters, Inc. Method and apparatus for detecting and characterizing particles in a multiphase fluid
EP1886098B1 (en) * 2005-05-27 2016-03-09 Expro Meters, Inc. An apparatus and method for measuring a parameter of a multiphase flow
US7526966B2 (en) * 2005-05-27 2009-05-05 Expro Meters, Inc. Apparatus and method for measuring a parameter of a multiphase flow
US7249525B1 (en) 2005-06-22 2007-07-31 Cidra Corporation Apparatus for measuring parameters of a fluid in a lined pipe
US7603916B2 (en) 2005-07-07 2009-10-20 Expro Meters, Inc. Wet gas metering using a differential pressure and a sonar based flow meter
EP1899686B1 (en) 2005-07-07 2011-09-28 CiDra Corporation Wet gas metering using a differential pressure based flow meter with a sonar based flow meter
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
US7523640B2 (en) * 2005-08-01 2009-04-28 Baker Hughes Incorporated Acoustic fluid analyzer
US8794062B2 (en) * 2005-08-01 2014-08-05 Baker Hughes Incorporated Early kick detection in an oil and gas well
US7614302B2 (en) * 2005-08-01 2009-11-10 Baker Hughes Incorporated Acoustic fluid analysis method
US9109433B2 (en) 2005-08-01 2015-08-18 Baker Hughes Incorporated Early kick detection in an oil and gas well
WO2007136788A2 (en) * 2006-05-16 2007-11-29 Cidra Corporation Apparatus and method for determining a parameter in a wet gas flow
WO2008013957A1 (en) * 2006-07-27 2008-01-31 Cidra Corporation Apparatus and method for attenuating acoustic waves in propagating within a pipe wall
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
US7881884B2 (en) * 2007-02-06 2011-02-01 Weatherford/Lamb, Inc. Flowmeter array processing algorithm with wide dynamic range
US8346491B2 (en) 2007-02-23 2013-01-01 Expro Meters, Inc. Sonar-based flow meter operable to provide product identification
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
AU2015200314B2 (en) * 2009-05-27 2017-02-02 Silixa Limited Method and apparatus for optical sensing
GB2517322B (en) 2009-05-27 2016-02-24 Silixa Ltd Apparatus for optical sensing
KR101870977B1 (ko) 2010-03-09 2018-06-25 사이드라 코포레이트 서비시즈 아이엔씨. 부유식 탱크들, 칼럼들, 드럼들, 튜브들, 배트들 내에서 폭기된 유체들 및 액체들에 대한 가스 부피 분율(gvf)을 결정하는 방법 및 장치
DE102010019811A1 (de) * 2010-05-06 2011-11-10 Airbus Operations Gmbh Verfahren und Vorrichtung zur Messung der Strömungsgeschwindigkeit mittels eines Plasmas
IT1400033B1 (it) * 2010-05-07 2013-05-17 Mulargia Antenna sismica a campionamento spaziale uniforme in lunghezza d'onda.
US11269361B2 (en) * 2011-10-05 2022-03-08 Cidra Corporate Services Inc. Method and apparatus for using velocity profile measurements in recovering bitumen from a coarse tailings line
CA2850231C (en) 2011-10-05 2021-03-16 Cidra Corporate Services Inc. Method and apparatus for using velocity profile measurements in recovering bitumen from a coarse tailings line
RU2477498C1 (ru) * 2011-11-25 2013-03-10 Учреждение Российской академии наук Тихоокеанский океанологический институт им. В.И. Ильичева Дальневосточного отделения РАН (ТОИ ДВО РАН) Метод мониторинга вертикального распределения скорости звука в условиях мелководных акваторий
US9366133B2 (en) 2012-02-21 2016-06-14 Baker Hughes Incorporated Acoustic standoff and mud velocity using a stepped transmitter
CA2890568A1 (en) * 2012-12-28 2014-07-03 Halliburton Energy Services, Inc. Method and apparatus for the downhole in-situ determination of the speed of sound in a formation fluid
US10316648B2 (en) 2015-05-06 2019-06-11 Baker Hughes Incorporated Method of estimating multi-phase fluid properties in a wellbore utilizing acoustic resonance
CN105651372B (zh) * 2015-12-31 2018-07-27 西北工业大学 一种使用多载频信号的声速测量方法
EP3670830B1 (en) 2016-04-07 2021-08-11 BP Exploration Operating Company Limited Detecting downhole events using acoustic frequency domain features
BR112018070565A2 (pt) 2016-04-07 2019-02-12 Bp Exploration Operating Company Limited detecção de eventos de fundo de poço usando características de domínio da frequência acústicas
CN107918149A (zh) * 2016-10-09 2018-04-17 中国石油化工股份有限公司 观测系统覆盖次数评价方法及系统
EP3608503B1 (en) 2017-03-31 2022-05-04 BP Exploration Operating Company Limited Well and overburden monitoring using distributed acoustic sensors
CA3073623A1 (en) 2017-08-23 2019-02-28 Bp Exploration Operating Company Limited Detecting downhole sand ingress locations
AU2018350092A1 (en) 2017-10-11 2020-05-14 Bp Exploration Operating Company Limited Detecting events using acoustic frequency domain features
CA3120164A1 (en) 2018-11-29 2020-06-04 Bp Exploration Operating Company Limited Event detection using das features with machine learning
GB201820331D0 (en) 2018-12-13 2019-01-30 Bp Exploration Operating Co Ltd Distributed acoustic sensing autocalibration
US11650089B2 (en) 2019-07-10 2023-05-16 Expro Meters, Inc. Apparatus and method for measuring fluid flow parameters
WO2021073741A1 (en) 2019-10-17 2021-04-22 Lytt Limited Fluid inflow characterization using hybrid das/dts measurements
WO2021073740A1 (en) 2019-10-17 2021-04-22 Lytt Limited Inflow detection using dts features
WO2021093974A1 (en) 2019-11-15 2021-05-20 Lytt Limited Systems and methods for draw down improvements across wellbores
CA3180595A1 (en) 2020-06-11 2021-12-16 Lytt Limited Systems and methods for subterranean fluid flow characterization
EP4168647A1 (en) 2020-06-18 2023-04-26 Lytt Limited Event model training using in situ data
CN112051610B (zh) * 2020-10-21 2021-06-11 中国地质大学(北京) 一种矢量场多模式面波频散计算方法及系统

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952578A (en) 1974-10-07 1976-04-27 The United States Of America As Represented By The Secretary Of The Department Of Health, Education And Welfare Scanning ultrasonic spectrograph for fluid analysis
US4320659A (en) 1978-02-27 1982-03-23 Panametrics, Inc. Ultrasonic system for measuring fluid impedance or liquid level
US4896540A (en) * 1988-04-08 1990-01-30 Parthasarathy Shakkottai Aeroacoustic flowmeter
DE4306119A1 (de) 1993-03-01 1994-09-08 Pechhold Wolfgang Prof Dr Mechanisches Breitbandspektrometer
FI94909C (fi) * 1994-04-19 1995-11-10 Valtion Teknillinen Akustinen virtausmittausmenetelmä ja sitä soveltava laite
US5948959A (en) 1997-05-29 1999-09-07 The United States Of America As Represented By The Secretary Of The Navy Calibration of the normal pressure transfer function of a compliant fluid-filled cylinder
US6354147B1 (en) * 1998-06-26 2002-03-12 Cidra Corporation Fluid parameter measurement in pipes using acoustic pressures
CA2335457C (en) * 1998-06-26 2007-09-11 Cidra Corporation Fluid parameter measurement in pipes using acoustic pressures
US6378357B1 (en) * 2000-03-14 2002-04-30 Halliburton Energy Services, Inc. Method of fluid rheology characterization and apparatus therefor

Also Published As

Publication number Publication date
EP1356272B1 (en) 2004-06-09
US6587798B2 (en) 2003-07-01
NO329870B1 (no) 2011-01-17
US20020100327A1 (en) 2002-08-01
DE60103781T2 (de) 2005-07-14
NO20032311L (no) 2003-07-18
WO2002046737A2 (en) 2002-06-13
AU2002220879A1 (en) 2002-06-18
DE60103781D1 (de) 2004-07-15
CA2428336A1 (en) 2002-06-13
EP1356272A2 (en) 2003-10-29
CA2428336C (en) 2007-03-06
WO2002046737A3 (en) 2003-04-24

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Owner name: WEATHERFORD TECHNOLOGY HOLDINGS, US

CREP Change of representative

Representative=s name: BRYN AARFLOT AS, STORTINGSGATA 8, 0161 OSLO, NORGE

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