[go: up one dir, main page]

NO20080835L - Akustisk fluidanalysator - Google Patents

Akustisk fluidanalysator

Info

Publication number
NO20080835L
NO20080835L NO20080835A NO20080835A NO20080835L NO 20080835 L NO20080835 L NO 20080835L NO 20080835 A NO20080835 A NO 20080835A NO 20080835 A NO20080835 A NO 20080835A NO 20080835 L NO20080835 L NO 20080835L
Authority
NO
Norway
Prior art keywords
fluid
density
compressibility
fluid analyzer
acoustic fluid
Prior art date
Application number
NO20080835A
Other languages
English (en)
Other versions
NO343792B1 (no
Inventor
Rocco Difoggio
Weimin Yao
Original Assignee
Baker Hughes Inc
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 Baker Hughes Inc filed Critical Baker Hughes Inc
Publication of NO20080835L publication Critical patent/NO20080835L/no
Publication of NO343792B1 publication Critical patent/NO343792B1/no

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating 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
    • G01N29/02—Analysing fluids
    • G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic waves
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
    • E21B49/10—Obtaining fluid samples or testing fluids, in boreholes or wells using side-wall fluid samplers or testers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating 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
    • G01N29/02—Analysing fluids
    • G01N29/032—Analysing fluids by measuring attenuation of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating 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
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating 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
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/222—Constructional or flow details for analysing fluids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/024—Mixtures
    • G01N2291/02433—Gases in liquids, e.g. bubbles, foams
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02881—Temperature

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

Det er beskrevet en fremgangsmåte for å bestemme egenskaper ved et formasjonsfluid basert på målinger av fluidlydhastighet, en måling av fluiddensitet, eller begge deler. Egenskapene innbefatter kompressibilitet, termisk konduktivitet og gass/olje-forhold. Kompressibiliteten til et fluid er lik den resiproke verdien av produktet av lydhastig-heten i kvadrat og fluiddensiteten. Densiteten og lydhastigheten kan måles akustisk. Fremgangsmåten innbefatter videre en måte for å behandle data, innbefattende å anvende Savitzky/Golay-metoden og benytte en teknikk med variabel terskel.
NO20080835A 2005-08-01 2008-02-15 Akustisk fluidanalysator NO343792B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/194,365 US7523640B2 (en) 2005-08-01 2005-08-01 Acoustic fluid analyzer
PCT/US2006/029690 WO2007016464A2 (en) 2005-08-01 2006-07-31 Acoustic fluid analyzer

Publications (2)

Publication Number Publication Date
NO20080835L true NO20080835L (no) 2008-04-28
NO343792B1 NO343792B1 (no) 2019-06-11

Family

ID=37692821

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20080835A NO343792B1 (no) 2005-08-01 2008-02-15 Akustisk fluidanalysator

Country Status (8)

Country Link
US (2) US7523640B2 (no)
EP (1) EP1917417B1 (no)
CN (1) CN101268251A (no)
BR (1) BRPI0614129B1 (no)
EA (1) EA012154B1 (no)
MY (1) MY145219A (no)
NO (1) NO343792B1 (no)
WO (1) WO2007016464A2 (no)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7523640B2 (en) * 2005-08-01 2009-04-28 Baker Hughes Incorporated Acoustic fluid analyzer
US20080047337A1 (en) * 2006-08-23 2008-02-28 Baker Hughes Incorporated Early Kick Detection in an Oil and Gas Well
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
US8037747B2 (en) * 2006-03-30 2011-10-18 Baker Hughes Incorporated Downhole fluid characterization based on changes in acoustic properties
NO327568B1 (no) * 2006-04-26 2009-08-17 Det Norske Veritas As Akustisk fremgangsmate og anordning for deteksjon eller karakterisering av et medium inneholdt i en struktur, saerlig en gass, et kondensat eller et hydrat i en rorledning for transport av hydrokarboner
US7703328B2 (en) * 2006-05-18 2010-04-27 Baker Hughes Incorporated Pressure sensor utilizing a low thermal expansion material
US20080242997A1 (en) * 2007-03-26 2008-10-02 Luna Innovations Incorporated Method and apparatus for classifying gaseous and non-gaseous objects
US8612154B2 (en) * 2007-10-23 2013-12-17 Schlumberger Technology Corporation Measurement of sound speed of downhole fluid by helmholtz resonator
DE102007056543A1 (de) * 2007-11-23 2009-05-28 Robert Bosch Gmbh Verfahren zur Untersuchung von Phasenzuständen
US8032311B2 (en) 2008-05-22 2011-10-04 Baker Hughes Incorporated Estimating gas-oil ratio from other physical properties
US8434356B2 (en) 2009-08-18 2013-05-07 Schlumberger Technology Corporation Fluid density from downhole optical measurements
US7913556B2 (en) * 2008-06-11 2011-03-29 Schlumberger Technology Corporation Methods and apparatus to determine the compressibility of a fluid
US9631480B2 (en) 2009-05-11 2017-04-25 Halliburton Energy Services, Inc. Acoustic velocity measurements using tilted transducers
WO2010132039A1 (en) * 2009-05-11 2010-11-18 Paul Cooper Acoustic velocity measurements using tilted transducers
US8250902B2 (en) * 2009-05-27 2012-08-28 Caterpillar Inc. System and method for measuring aeration of a liquid
US20100315900A1 (en) * 2009-06-12 2010-12-16 Baker Hughes Incorporated Method and apparatus for high resolution sound speed measurements
GB2472081B (en) 2009-07-24 2014-03-05 Bios Developments Ltd A method for determining speed of a signal species in a medium and associated apparatus
CN102597741B (zh) * 2009-08-03 2014-04-09 乌尔蒂莫测量有限责任公司 用于测量船中易流动性材料的物理性质的方法和装置
CN103201600B (zh) 2010-11-11 2015-05-20 Ssi技术公司 确定柴油机排气流体的质量和/或深度的系统和方法
FR2973390B1 (fr) 2011-04-01 2015-01-02 Seb Sa Article culinaire anti-rayures et procede de fabrication d'un tel article
US8824240B2 (en) 2011-09-07 2014-09-02 Weatherford/Lamb, Inc. Apparatus and method for measuring the acoustic impedance of wellbore fluids
US8773948B2 (en) 2011-09-27 2014-07-08 Schlumberger Technology Corporation Methods and apparatus to determine slowness of drilling fluid in an annulus
US9366133B2 (en) 2012-02-21 2016-06-14 Baker Hughes Incorporated Acoustic standoff and mud velocity using a stepped transmitter
AU2012397797A1 (en) * 2012-12-28 2015-05-07 Halliburton Energy Services, Inc. Method and apparatus for the downhole in-situ determination of the speed of sound in a formation fluid
US9279317B2 (en) 2013-03-14 2016-03-08 Baker Hughes Incorporated Passive acoustic resonator for fiber optic cable tubing
WO2015020647A1 (en) 2013-08-07 2015-02-12 Halliburton Energy Services, Inc. High-speed, wireless data communication through a column of wellbore fluid
US9594057B2 (en) * 2014-01-21 2017-03-14 Baker Hughes Incorporated Reflection-only sensor for fluid acoustic impedance, sound speed, and density
WO2016109451A1 (en) 2014-12-29 2016-07-07 Concentric Meter Corporation Electromagnetic transducer
EP3215812B1 (en) 2014-12-29 2020-10-07 Concentric Meter Corporation Fluid parameter sensor and meter
US10126266B2 (en) 2014-12-29 2018-11-13 Concentric Meter Corporation Fluid parameter sensor and meter
CA2973061A1 (en) 2015-02-13 2016-08-18 Halliburton Energy Services, Inc. Real-time ultrasound techniques to determine particle size distribution
US10316648B2 (en) 2015-05-06 2019-06-11 Baker Hughes Incorporated Method of estimating multi-phase fluid properties in a wellbore utilizing acoustic resonance
FR3036429A1 (no) * 2015-05-22 2016-11-25 Halliburton Energy Services Inc
DE102015110726A1 (de) * 2015-07-03 2017-01-05 Miele & Cie. Kg Verfahren zum Betreiben eines Kochsystems
US10101255B2 (en) 2015-09-11 2018-10-16 Schlumberger Technology Corporation Apparatus and methods for analysis of reservoir fluids
WO2017062848A1 (en) 2015-10-07 2017-04-13 Cummins Inc. Systems and methods for estimating fuel type and fuel properties using sonic speed
JP7152951B2 (ja) * 2015-10-12 2022-10-13 ラブサイト インコーポレイテッド 容器に標識を付けて、容器の特性を音響的に確認する、システム及び方法
CN105548373B (zh) * 2015-12-15 2018-03-27 华南理工大学 一种准单次正交互补Golay(A,B)码超声相控阵编码激励方法
US10564256B2 (en) * 2016-04-01 2020-02-18 Rockwell Collins, Inc. Beam sharpening radar system and method
CA3180983C (en) * 2016-08-18 2025-06-10 Seismos, Inc. METHOD FOR EVALUATING AND MONITORING THE TREATMENT OF A FRACTURE IN A FORMATION USING FLUID PRESSURE WAVES
US10876941B2 (en) * 2016-08-31 2020-12-29 Halliburton Energy Services, Inc. Determining fluid density in a pressure pump using bulk modulus measurements
CN107255672B (zh) * 2017-07-31 2020-07-17 中国石油大学(华东) 基于超声波测量原油压缩系数实验系统及方法
CN109463821A (zh) * 2017-09-07 2019-03-15 南宁市富久信息技术有限公司 一种基于手势识别的安全指导作业手套
EP3822613B1 (en) * 2019-11-13 2023-09-06 ABB Schweiz AG Measurement system for determining liquid properties in a vessel
US12203893B2 (en) 2022-10-28 2025-01-21 Baker Hughes Oilfield Operations Llc Fluid density from tunable acoustic impedance matching

Family Cites Families (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4416152A (en) * 1981-10-09 1983-11-22 Dresser Industries, Inc. Formation fluid testing and sampling apparatus
US4571693A (en) * 1983-03-09 1986-02-18 Nl Industries, Inc. Acoustic device for measuring fluid properties
FR2556845B1 (fr) * 1983-12-16 1986-04-11 Cgr Ultrasonic Procede de caracterisation par ondes acoustiques de la structure d'un milieu et dispositif mettant en oeuvre ce procede
US4769793A (en) * 1985-07-24 1988-09-06 Ultrasonic Arrays, Inc. Dual reference surface transducer
US4938066A (en) * 1988-01-29 1990-07-03 Xecutek Corporation Ultrasonic apparatus for measuring the speed of sound in a gaseous medium
GB9424430D0 (en) * 1994-12-02 1995-01-18 British Gas Plc Measurement of a gas characteristic
AU714953B2 (en) 1995-12-29 2000-01-13 Ian Basil Shine Method for testing a cell sample
US5741962A (en) * 1996-04-05 1998-04-21 Halliburton Energy Services, Inc. Apparatus and method for analyzing a retrieving formation fluid utilizing acoustic measurements
NL1003595C2 (nl) * 1996-04-10 1997-10-14 Tno Werkwijze en inrichting voor het karakteriseren van suspensies.
JPH10170485A (ja) * 1996-10-08 1998-06-26 Toyota Motor Corp 超音波式ガソリン特性判別方法および装置
US6393895B1 (en) 1997-10-08 2002-05-28 Symyx Technologies, Inc. Method and apparatus for characterizing materials by using a mechanical resonator
US6494079B1 (en) * 2001-03-07 2002-12-17 Symyx Technologies, Inc. Method and apparatus for characterizing materials by using a mechanical resonator
DE69913937T2 (de) * 1998-01-16 2004-12-23 Lattice Intellectual Property Ltd. Methode und gerät zur messung der relativen dichte eines gases
US6116080A (en) * 1998-04-17 2000-09-12 Lorex Industries, Inc. Apparatus and methods for performing acoustical measurements
GB9823675D0 (en) 1998-10-30 1998-12-23 Schlumberger Ltd Flowmeter
WO2000046583A1 (en) * 1999-02-04 2000-08-10 Bechtel Bwxt Idaho, Llc Ultrasonic fluid quality sensor system
US6688176B2 (en) * 2000-01-13 2004-02-10 Halliburton Energy Services, Inc. Single tube densitometer
AU2001247336B2 (en) * 2000-03-10 2006-02-02 Smiths Detection, Inc. Control for an industrial process using one or more multidimensional variables
US6672163B2 (en) * 2000-03-14 2004-01-06 Halliburton Energy Services, Inc. Acoustic sensor for fluid characterization
US6626026B2 (en) 2000-04-07 2003-09-30 Interuniversitair Microelektronica Centrum (Imec) Acoustic wave based sensor
US6651513B2 (en) 2000-04-27 2003-11-25 Endress + Hauser Flowtec Ag Vibration meter and method of measuring a viscosity of a fluid
US6587798B2 (en) * 2000-12-04 2003-07-01 Weatherford/Lamb, Inc. Method and system for determining the speed of sound in a fluid within a conduit
GB0031564D0 (en) * 2000-12-22 2001-02-07 Borealis Tech Oy Viscosity measurement
RU2232384C2 (ru) * 2001-01-23 2004-07-10 Яхно Татьяна Анатольевна Способ исследования многокомпонентной жидкости
JP2002243536A (ja) * 2001-02-19 2002-08-28 Ngk Spark Plug Co Ltd 超音波伝播時間測定方法及びガス濃度センサ
JP4188087B2 (ja) * 2001-03-23 2008-11-26 シュルンベルジェ ホールディングス リミテッド 流体特性センサー
AUPR458201A0 (en) * 2001-04-23 2001-05-24 Commonwealth Scientific And Industrial Research Organisation Fluid properties evaluation
US7317989B2 (en) * 2001-05-15 2008-01-08 Baker Hughes Incorporated Method and apparatus for chemometric estimations of fluid density, viscosity, dielectric constant, and resistivity from mechanical resonator data
EP1397661B1 (en) * 2001-05-15 2008-09-10 Baker Hughes Incorporated Method and apparatus for downhole fluid characterization using flxural mechanical resonators
WO2003004998A1 (en) * 2001-07-05 2003-01-16 David James Method and apparatus for measuring the elasticity of fluids
US6789426B2 (en) * 2001-07-31 2004-09-14 Board Of Trustees Of The Leland Stanford Junior University Microfluidic channels with integrated ultrasonic transducers for temperature measurement and method
US6712138B2 (en) * 2001-08-09 2004-03-30 Halliburton Energy Services, Inc. Self-calibrated ultrasonic method of in-situ measurement of borehole fluid acoustic properties
US7059172B2 (en) * 2001-11-07 2006-06-13 Weatherford/Lamb, Inc. Phase flow measurement in pipes using a density meter
US20030101819A1 (en) * 2001-12-04 2003-06-05 Mutz Mitchell W. Acoustic assessment of fluids in a plurality of reservoirs
US7354141B2 (en) * 2001-12-04 2008-04-08 Labcyte Inc. Acoustic assessment of characteristics of a fluid relevant to acoustic ejection
EP1467948A1 (en) * 2002-01-24 2004-10-20 Cantion A/S A sensor
US6763698B2 (en) * 2002-03-15 2004-07-20 Battelle Memorial Institute Self calibrating system and technique for ultrasonic determination of fluid properties
EP1347293A1 (en) * 2002-03-18 2003-09-24 Ultrasonic Scientific Limited Acoustical cell for material analysis
US6640625B1 (en) * 2002-05-08 2003-11-04 Anthony R. H. Goodwin Method and apparatus for measuring fluid density downhole
US6892812B2 (en) * 2002-05-21 2005-05-17 Noble Drilling Services Inc. Automated method and system for determining the state of well operations and performing process evaluation
US7155967B2 (en) * 2002-07-09 2007-01-02 Schlumberger Technology Corporation Formation testing apparatus and method
US6820702B2 (en) * 2002-08-27 2004-11-23 Noble Drilling Services Inc. Automated method and system for recognizing well control events
WO2004063741A2 (en) * 2003-01-13 2004-07-29 Cidra Corporation Apparatus for measuring parameters of a flowing multiphase fluid mixture
US7039530B2 (en) * 2003-12-29 2006-05-02 Ashcroft Inc. Fluid measurement
US7024917B2 (en) * 2004-03-16 2006-04-11 Baker Hughes Incorporated Method and apparatus for an acoustic pulse decay density determination
US20050268703A1 (en) * 2004-03-31 2005-12-08 Theodor Funck Sample receptacle for ultrasonic measurements
US7377169B2 (en) * 2004-04-09 2008-05-27 Shell Oil Company Apparatus and methods for acoustically determining fluid properties while sampling
IL161937A (en) * 2004-05-11 2008-08-07 Nexense Ltd Sensor system for high-precision measurements of temperature, composition and/or pressure of a fluid
US7614302B2 (en) 2005-08-01 2009-11-10 Baker Hughes Incorporated Acoustic fluid analysis method
US7523640B2 (en) 2005-08-01 2009-04-28 Baker Hughes Incorporated Acoustic fluid analyzer

Also Published As

Publication number Publication date
WO2007016464B1 (en) 2007-11-08
EP1917417B1 (en) 2017-04-19
MY145219A (en) 2012-01-13
BRPI0614129B1 (pt) 2018-04-03
EA012154B1 (ru) 2009-08-28
EA200800394A1 (ru) 2008-08-29
US7523640B2 (en) 2009-04-28
WO2007016464A3 (en) 2007-09-27
CN101268251A (zh) 2008-09-17
EP1917417A2 (en) 2008-05-07
US20090229341A1 (en) 2009-09-17
NO343792B1 (no) 2019-06-11
BRPI0614129A2 (pt) 2011-03-09
US7921691B2 (en) 2011-04-12
WO2007016464A2 (en) 2007-02-08
US20070022803A1 (en) 2007-02-01
EP1917417A4 (en) 2015-04-08

Similar Documents

Publication Publication Date Title
NO20080835L (no) Akustisk fluidanalysator
SA522432270B1 (ar) توصيف تدفق مائع للداخل باستخدام قياسات مستشعر صوتي موزع/ استشعار درجة حرارة موزع مختلطة
Deroo et al. Detection of damage in concrete using diffuse ultrasound
EA200970165A1 (ru) Определение расхода текучей среды
NO20065135L (no) Apparat og fremgangsmate for a akkustisk bestemme fluidegenskaper samtidig med provetaking
CN104535275B (zh) 基于气泡声学的水下气体泄漏量的检测方法和检测装置
CN103321633B (zh) 油井动液面深度检测方法及装置
CN102636249B (zh) 一种利用表面波测量材料声速的方法
WO2007127003A3 (en) Downhole fluid characterization based on changes in acoustic properties with pressure
WO2006130499A3 (en) An apparatus and method for fiscal measuring of an aerated fluid
DE59803202D1 (de) Messen physikalischer oder technischer grössen viskoser medien mittels rayleigh-wellen
MX2010005017A (es) Metodos y aparatos para determinar una concentracion de nitrogeno en un fluido de fondo de pozo.
EA201070356A1 (ru) Акустические измерения толщины, использующие газ в качестве связующей среды
WO2009117470A3 (en) Downhole fluid characterization based on changes in acoustic properties
CN113916719A (zh) 一种流体密度与流速在线同步检测系统与检测方法
WO2009055197A3 (en) Measurement of sound speed of downhole fluid by helmholtz resonator
WO2010004289A3 (en) Hydrate monitoring system with measurement of sound velocity and electrical conductivity
WO2008030844A3 (en) Method and system for determining the direction of fluid flow
EA200500319A1 (ru) Ультразвуковой способ измерения расхода жидких и/или газообразных сред и устройство для его осуществления
CA2474071A1 (en) Apparatus and method for measuring parameters of a mixture having solid particles suspended in a fluid flowing in a pipe
CN102590337B (zh) 一种检测微量六氟化硫浓度的声学方法及其装置
CN102426035B (zh) 一种多孔吸声材料静流阻率和曲折度的测试方法
CN104062645A (zh) 一种测量参量阵差频波与同频小振幅波信号相位差的方法
EA201400525A1 (ru) Устройство для определения компонентного состава продукции нефтегазовой скважины
CN103196998A (zh) 一种柱状样沉积物声速测量方法

Legal Events

Date Code Title Description
CHAD Change of the owner's name or address (par. 44 patent law, par. patentforskriften)

Owner name: BAKER HUGHES, US