NO965241L - Transduser for sonisk logging under boring - Google Patents

Transduser for sonisk logging under boring

Info

Publication number
NO965241L
NO965241L NO965241A NO965241A NO965241L NO 965241 L NO965241 L NO 965241L NO 965241 A NO965241 A NO 965241A NO 965241 A NO965241 A NO 965241A NO 965241 L NO965241 L NO 965241L
Authority
NO
Norway
Prior art keywords
transduce
drilling
sonic logging
sonic
logging
Prior art date
Application number
NO965241A
Other languages
English (en)
Other versions
NO965241D0 (no
NO328922B1 (no
Inventor
Jeffrey B Aron
Shu-Kong Chang
Donald A Klasel
Ting M Lau
Original Assignee
Anadrill Int Sa
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 Anadrill Int Sa filed Critical Anadrill Int Sa
Publication of NO965241D0 publication Critical patent/NO965241D0/no
Publication of NO965241L publication Critical patent/NO965241L/no
Publication of NO328922B1 publication Critical patent/NO328922B1/no

Links

Classifications

    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
    • E21B47/017—Protecting measuring instruments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
    • G01V1/52—Structural details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
    • G01V1/52—Structural details
    • G01V2001/526—Mounting of transducers

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geophysics (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Acoustics & Sound (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
NO19965241A 1995-12-07 1996-12-06 Transduser for sonisk logging under boring NO328922B1 (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/569,027 US5753812A (en) 1995-12-07 1995-12-07 Transducer for sonic logging-while-drilling

Publications (3)

Publication Number Publication Date
NO965241D0 NO965241D0 (no) 1996-12-06
NO965241L true NO965241L (no) 1997-06-09
NO328922B1 NO328922B1 (no) 2010-06-14

Family

ID=24273794

Family Applications (1)

Application Number Title Priority Date Filing Date
NO19965241A NO328922B1 (no) 1995-12-07 1996-12-06 Transduser for sonisk logging under boring

Country Status (8)

Country Link
US (1) US5753812A (no)
EP (1) EP0778473B1 (no)
CN (1) CN1102742C (no)
AU (1) AU721408B2 (no)
BR (1) BR9605866B1 (no)
CA (1) CA2192276C (no)
DE (1) DE69632300D1 (no)
NO (1) NO328922B1 (no)

Families Citing this family (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6196335B1 (en) * 1998-06-29 2001-03-06 Dresser Industries, Inc. Enhancement of drill bit seismics through selection of events monitored at the drill bit
US6366531B1 (en) 1998-09-22 2002-04-02 Dresser Industries, Inc. Method and apparatus for acoustic logging
US6564899B1 (en) 1998-09-24 2003-05-20 Dresser Industries, Inc. Method and apparatus for absorbing acoustic energy
US6213250B1 (en) 1998-09-25 2001-04-10 Dresser Industries, Inc. Transducer for acoustic logging
US6429784B1 (en) 1999-02-19 2002-08-06 Dresser Industries, Inc. Casing mounted sensors, actuators and generators
US7028806B2 (en) * 1999-06-03 2006-04-18 Baker Hughes Incorporated Acoustic isolator for downhole applications
US6915875B2 (en) * 1999-06-03 2005-07-12 Baker Hughes Incorporated Acoustic isolator for downhole applications
US6930616B2 (en) * 2000-11-13 2005-08-16 Baker Hughes Incorporated Method and apparatus for LWD shear velocity measurement
US6985086B2 (en) 2000-11-13 2006-01-10 Baker Hughes Incorporated Method and apparatus for LWD shear velocity measurement
US6850168B2 (en) * 2000-11-13 2005-02-01 Baker Hughes Incorporated Method and apparatus for LWD shear velocity measurement
US6909666B2 (en) 2000-11-13 2005-06-21 Baker Hughes Incorporated Method and apparatus for generating acoustic signals for LWD shear velocity measurement
US7301338B2 (en) * 2001-08-13 2007-11-27 Baker Hughes Incorporated Automatic adjustment of NMR pulse sequence to optimize SNR based on real time analysis
US6631327B2 (en) * 2001-09-21 2003-10-07 Schlumberger Technology Corporation Quadrupole acoustic shear wave logging while drilling
US6782970B2 (en) 2002-04-25 2004-08-31 Schlumberger Technology Corporation Acoustic source using a shaftless electrical hammer
US7098858B2 (en) * 2002-09-25 2006-08-29 Halliburton Energy Services, Inc. Ruggedized multi-layer printed circuit board based downhole antenna
US6995500B2 (en) * 2003-07-03 2006-02-07 Pathfinder Energy Services, Inc. Composite backing layer for a downhole acoustic sensor
US7513147B2 (en) * 2003-07-03 2009-04-07 Pathfinder Energy Services, Inc. Piezocomposite transducer for a downhole measurement tool
US7075215B2 (en) * 2003-07-03 2006-07-11 Pathfinder Energy Services, Inc. Matching layer assembly for a downhole acoustic sensor
US7036363B2 (en) * 2003-07-03 2006-05-02 Pathfinder Energy Services, Inc. Acoustic sensor for downhole measurement tool
US7063144B2 (en) * 2003-07-08 2006-06-20 Klamath Falls, Inc. Acoustic well recovery method and device
US7207397B2 (en) * 2003-09-30 2007-04-24 Schlumberger Technology Corporation Multi-pole transmitter source
PL1700001T3 (pl) * 2003-12-31 2013-12-31 Varco I/P Inc Oprzyrządowany, wewnętrzny zawór przeciwerupcyjny do mierzenia parametrów wiercenia kolumny eksploatacyjnej
US7460435B2 (en) * 2004-01-08 2008-12-02 Schlumberger Technology Corporation Acoustic transducers for tubulars
US7364007B2 (en) * 2004-01-08 2008-04-29 Schlumberger Technology Corporation Integrated acoustic transducer assembly
US7367392B2 (en) * 2004-01-08 2008-05-06 Schlumberger Technology Corporation Wellbore apparatus with sliding shields
US7730967B2 (en) * 2004-06-22 2010-06-08 Baker Hughes Incorporated Drilling wellbores with optimal physical drill string conditions
US20060062082A1 (en) * 2004-09-23 2006-03-23 Halliburton Energy Services, Inc. Method and apparatus for generating acoustic signal with single mode of propagation
US8125848B2 (en) * 2005-02-22 2012-02-28 Halliburton Energy Services, Inc. Acoustic logging-while-drilling tools having a hexapole source configuration and associated logging methods
US7372777B2 (en) * 2005-09-23 2008-05-13 Probe Technology Services, Inc. Sonic instrumentation apparatus and method for cement bond logging
US7637161B2 (en) * 2006-04-19 2009-12-29 Raytheon Utd Inc. Substrate penetrating acoustic sensor
US8467266B2 (en) 2006-06-13 2013-06-18 Seispec, L.L.C. Exploring a subsurface region that contains a target sector of interest
US7382684B2 (en) 2006-06-13 2008-06-03 Seispec, L.L.C. Method for selective bandlimited data acquisition in subsurface formations
US7587936B2 (en) * 2007-02-01 2009-09-15 Smith International Inc. Apparatus and method for determining drilling fluid acoustic properties
CA2673243C (en) * 2007-05-21 2015-07-07 Halliburton Energy Services, Inc. Logging systems and methods with tilt compensation for sector-based acoustic tools
US8279713B2 (en) * 2007-07-20 2012-10-02 Precision Energy Services, Inc. Acoustic transmitter comprising a plurality of piezoelectric plates
US7864629B2 (en) * 2007-11-20 2011-01-04 Precision Energy Services, Inc. Monopole acoustic transmitter comprising a plurality of piezoelectric discs
US8336394B2 (en) * 2008-01-10 2012-12-25 Metering & Technology Sas Device for measuring the flow rate of a fluid flowing in a pipe
EP2104111A1 (de) * 2008-03-20 2009-09-23 Nanoworld AG SPM-Sonde mit verkürztem Federbalken
GB2465504C (en) 2008-06-27 2019-12-25 Rasheed Wajid Expansion and sensing tool
US20100020638A1 (en) * 2008-07-24 2010-01-28 Precision Energy Services, Inc. Monopole acoustic transmitter ring comprising piezoelectric material
US8117907B2 (en) * 2008-12-19 2012-02-21 Pathfinder Energy Services, Inc. Caliper logging using circumferentially spaced and/or angled transducer elements
EP2770347A3 (en) * 2009-06-24 2014-10-22 Bergen Technology Center AS Transducer assembly
WO2011051776A2 (en) 2009-10-26 2011-05-05 Schlumberger Technology B.V. Apparatus for logging while drilling accoustic measurment
CN101845942B (zh) * 2010-05-21 2012-08-15 中国海洋石油总公司 一种可插拔式密封电路装置
US8944183B2 (en) 2010-08-11 2015-02-03 Baker Hughes Incorporated Low frequency formation shear slowness from drilling noise derived quadrupole array data
US9181798B2 (en) 2012-03-29 2015-11-10 Schlumberger Technology Corporation Removable modular antenna assembly for downhole applications
US9453407B2 (en) * 2012-09-28 2016-09-27 Rosemount Inc. Detection of position of a plunger in a well
CN102877827B (zh) * 2012-10-10 2015-03-11 中国石油天然气集团公司 一种随钻声波测井的声系模块
US9664016B2 (en) 2013-03-15 2017-05-30 Chevron U.S.A. Inc. Acoustic artificial lift system for gas production well deliquification
US9587470B2 (en) * 2013-03-15 2017-03-07 Chevron U.S.A. Inc. Acoustic artificial lift system for gas production well deliquification
US9534491B2 (en) 2013-09-27 2017-01-03 Rosemount Inc. Detection of position of a plunger in a well
US9568629B2 (en) 2014-10-02 2017-02-14 Saudi Arabian Oil Company Evaluation of rock boundaries and acoustic velocities using drill bit sound during vertical drilling
US20160109322A1 (en) * 2014-10-20 2016-04-21 HGST Netherlands B.V. Leak detection using acoustic wave transducer
WO2016141110A1 (en) * 2015-03-03 2016-09-09 Schlumberger Technology Corporation Multi-mode acoustic tool and method
CN105158805B (zh) * 2015-08-11 2017-10-27 中国石油天然气集团公司 声波测井相控方位接收换能器安装结构
US11143022B2 (en) 2016-08-14 2021-10-12 Halliburton Energy Services, Inc. Telemetry system
CN106522925B (zh) * 2016-11-21 2018-04-13 中国科学院地质与地球物理研究所 一种随钻方位声波信号接收换能器封装装置
US10968737B2 (en) * 2017-05-31 2021-04-06 Saudi Arabian Oil Company Acoustic coupler for downhole logging while drilling applications
US11493657B2 (en) 2018-02-08 2022-11-08 Schlumberger Technology Corporation Ultrasonic transducers for measuring formation velocities
US11921249B2 (en) 2018-02-08 2024-03-05 Schlumberger Technology Corporation Ultrasonic acoustic sensors for measuring formation velocities
US11346213B2 (en) 2018-05-14 2022-05-31 Schlumberger Technology Corporation Methods and apparatus to measure formation features
US10851641B2 (en) 2018-09-05 2020-12-01 Saudi Arabian Oil Company Acoustic testing of core samples
CN111119869B (zh) * 2018-11-01 2023-04-04 中国石油化工股份有限公司 超声换能器检测装置及随钻超声换能器检测方法
US11726223B2 (en) 2019-12-10 2023-08-15 Origin Rose Llc Spectral analysis and machine learning to detect offset well communication using high frequency acoustic or vibration sensing
US11248455B2 (en) 2020-04-02 2022-02-15 Saudi Arabian Oil Company Acoustic geosteering in directional drilling
EP4158154A1 (en) 2020-05-26 2023-04-05 Saudi Arabian Oil Company Water detection for geosteering in directional drilling
US11781419B2 (en) 2020-05-26 2023-10-10 Saudi Arabian Oil Company Instrumented mandrel for coiled tubing drilling
WO2021240197A1 (en) 2020-05-26 2021-12-02 Saudi Arabian Oil Company Geosteering in directional drilling
US11920460B2 (en) 2021-12-08 2024-03-05 Saudi Arabian Oil Company Identifying formation layer tops while drilling a wellbore
US11920467B2 (en) 2022-01-13 2024-03-05 Saudi Arabian Oil Company Minimization of drill string rotation rate effect on acoustic signal of drill sound

Family Cites Families (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2350371A (en) * 1940-07-23 1944-06-06 Sperry Sun Well Surveying Co Borehole logging apparatus
US2596023A (en) * 1944-12-16 1952-05-06 Eastman Oil Well Survey Co Audio caliper device
US2596024A (en) * 1944-12-16 1952-05-06 Eastman Oil Well Survey Co Audio caliper device
US2757358A (en) * 1953-04-03 1956-07-31 Socony Mobil Oil Co Inc Mechanically coupled acoustic well logging system
US2788510A (en) * 1953-07-06 1957-04-09 United Geophysical Corp Seismic prospecting apparatus
GB752296A (en) * 1954-08-15 1956-07-11 Socony Mobil Oil Co Mechanically coupled acoustic well logging system
US3063035A (en) * 1957-12-26 1962-11-06 Shell Oil Co Coupling for transducers in a well-logging device
US3144090A (en) * 1959-02-10 1964-08-11 Texaco Inc Acoustical well logging tool having low acoustical velocity between transducers
US3054471A (en) * 1960-01-15 1962-09-18 California Research Corp Acoustic filters for attenuating vertically propagated interference in borehole seismology
US3093810A (en) * 1960-02-01 1963-06-11 Pan American Petroleum Corp Seismic well logging data display
US3136381A (en) * 1960-05-03 1964-06-09 Halliburton Co Directed acoustic velocity logging
US3190388A (en) * 1961-05-16 1965-06-22 Schlumberger Well Surv Corp Acoustic logging tools with acoustic attenuating structure
US3191141A (en) * 1961-05-16 1965-06-22 Schlumberger Well Surv Corp Logging tool housing with acoustic delay
US3191142A (en) * 1961-05-16 1965-06-22 Schlumberger Well Surv Corp Low acoustic velocity support member for logging tools
US3191143A (en) * 1961-05-16 1965-06-22 Schlumberger Well Surv Corp Acoustic delay member for well logging tools
US3161256A (en) * 1961-05-16 1964-12-15 Schiumberger Well Surveying Co Acoustic logging tools
US3213415A (en) * 1962-08-27 1965-10-19 Schlumberger Well Surv Corp Pressure equalizing arrangement for acoustic logging
US3271733A (en) * 1964-07-08 1966-09-06 Schlumberger Well Surv Corp Acoustic well logging device
US3288245A (en) * 1964-12-04 1966-11-29 Halliburton Co Rigid acoustically isolated well logging tool
US3340953A (en) * 1966-02-18 1967-09-12 Mobil Oil Corp Acoustic logging of cased boreholes at a frequency determined by casing thickness
US3364463A (en) * 1966-07-01 1968-01-16 Schlumberger Technology Corp Well logging tool
US3381267A (en) * 1966-07-26 1968-04-30 Schlumberger Technology Corp Well logging tool
US3493921A (en) * 1968-02-05 1970-02-03 Gearhart Owen Industries Sonic wave energy apparatus and systems
US3608373A (en) * 1968-11-04 1971-09-28 Dresser Ind Method and well logging apparatus having acoustic and neutron pads
US3504757A (en) * 1968-11-20 1970-04-07 Schlumberger Technology Corp Acoustic well-logging apparatus
US3811529A (en) * 1970-04-07 1974-05-21 Schlumberger Technology Corp Acoustic logging apparatus for travel time and cement bond logging
US4020452A (en) * 1971-05-24 1977-04-26 Schlumberger Technology Corporation Apparatus for use in investigating earth formations
US4855963A (en) * 1972-11-08 1989-08-08 Exxon Production Research Company Shear wave logging using acoustic multipole devices
US3997867A (en) * 1973-09-17 1976-12-14 Schlumberger Technology Corporation Well bore data-transmission apparatus
US3982606A (en) * 1975-01-22 1976-09-28 Mobil Oil Corporation Acoustical logging apparatus having signal delay means
US4103281A (en) 1976-09-29 1978-07-25 Schlumberger Technology Corporation Measuring-while-drilling system having motor speed detection during encoding
US4100528A (en) 1976-09-29 1978-07-11 Schlumberger Technology Corporation Measuring-while-drilling method and system having a digital motor control
US4167000A (en) 1976-09-29 1979-09-04 Schlumberger Technology Corporation Measuring-while drilling system and method having encoder with feedback compensation
US4293936A (en) * 1976-12-30 1981-10-06 Sperry-Sun, Inc. Telemetry system
US4149409A (en) * 1977-11-14 1979-04-17 Shosei Serata Borehole stress property measuring system
SU716013A1 (ru) * 1978-01-05 1980-02-15 Всесоюзный научно-исследовательский и проектно-конструкторский институт геофизических исследований геологоразведочных скважин Акустический изол тор дл скважинных приборов акустического каротажа
US4265305A (en) * 1979-08-27 1981-05-05 Teleco Oilfield Services Inc. Mounting and shock absorber assembly for borehole telemetry apparatus
US4302826A (en) * 1980-01-21 1981-11-24 Sperry Corporation Resonant acoustic transducer system for a well drilling string
US4494072A (en) * 1980-04-21 1985-01-15 Exploration Logging, Inc. Well logging apparatus with replaceable sensor carrying insulating sleeve disposed in rotation restrained position around a drill string
US4541081A (en) * 1982-02-25 1985-09-10 Dresser Industries, Inc. Electroacoustic transducer
US4932003A (en) * 1982-05-19 1990-06-05 Exxon Production Research Company Acoustic quadrupole shear wave logging device
US5027331A (en) * 1982-05-19 1991-06-25 Exxon Production Research Company Acoustic quadrupole shear wave logging device
US4546459A (en) * 1982-12-02 1985-10-08 Magnavox Government And Industrial Electronics Company Method and apparatus for a phased array transducer
FR2570916B1 (fr) * 1983-06-23 1988-04-15 France Etat Armement Procede et transducteur electro-acoustique pour emettre ou recevoir des ondes acoustiques dans plusieurs bandes passantes
US4636999A (en) * 1983-06-30 1987-01-13 Nl Industries, Inc. Magnetostrictive pulse generator
US4649526A (en) * 1983-08-24 1987-03-10 Exxon Production Research Co. Method and apparatus for multipole acoustic wave borehole logging
US4665511A (en) * 1984-03-30 1987-05-12 Nl Industries, Inc. System for acoustic caliper measurements
US4682308A (en) * 1984-05-04 1987-07-21 Exxon Production Research Company Rod-type multipole source for acoustic well logging
US4685091A (en) * 1984-05-10 1987-08-04 Exxon Production Research Co. Method and apparatus for acoustic well logging
US4641520A (en) * 1984-08-23 1987-02-10 The United States Of America As Represented By The United States Department Of Energy Shear wave transducer for stress measurements in boreholes
US4870627A (en) * 1984-12-26 1989-09-26 Schlumberger Technology Corporation Method and apparatus for detecting and evaluating borehole wall fractures
US4888740A (en) * 1984-12-26 1989-12-19 Schlumberger Technology Corporation Differential energy acoustic measurements of formation characteristic
US4759000A (en) * 1985-06-13 1988-07-19 Reitz Ronald P Acoustic energy absorbing material
US4752895A (en) * 1985-12-31 1988-06-21 The Boeing Company Ultrasonic inspection system apparatus and method using multiple receiving transducers
US4964085A (en) * 1986-02-25 1990-10-16 Baroid Technology, Inc. Non-contact borehole caliber measurement
US4791797A (en) * 1986-03-24 1988-12-20 Nl Industries, Inc. Density neutron self-consistent caliper
US4744245A (en) * 1986-08-12 1988-05-17 Atlantic Richfield Company Acoustic measurements in rock formations for determining fracture orientation
JPS63207300A (ja) * 1987-02-24 1988-08-26 Toshiba Corp 超音波プロ−ブ
US4832148A (en) * 1987-09-08 1989-05-23 Exxon Production Research Company Method and system for measuring azimuthal anisotropy effects using acoustic multipole transducers
US4899112A (en) 1987-10-30 1990-02-06 Schlumberger Technology Corporation Well logging apparatus and method for determining formation resistivity at a shallow and a deep depth
US4850450A (en) * 1987-11-19 1989-07-25 Schlumberger Technology Corporation Logging tool housing with acoustic delay
US4879463A (en) 1987-12-14 1989-11-07 Schlumberger Technology Corporation Method and apparatus for subsurface formation evaluation
US5164548A (en) * 1988-02-08 1992-11-17 Chevron Research And Technology Company Method and apparatus for ultrasonic scanning of a borehole having improved sensor array and timing circuit
US5274606A (en) * 1988-04-21 1993-12-28 Drumheller Douglas S Circuit for echo and noise suppression of accoustic signals transmitted through a drill string
US4872526A (en) * 1988-07-18 1989-10-10 Schlumberger Technology Corporation Sonic well logging tool longitudinal wave attenuator
CN1025368C (zh) * 1988-12-22 1994-07-06 施户默格海外有限公司 在井孔中进行声波勘探的设备和方法
US5309404A (en) * 1988-12-22 1994-05-03 Schlumberger Technology Corporation Receiver apparatus for use in logging while drilling
US5036945A (en) * 1989-03-17 1991-08-06 Schlumberger Technology Corporation Sonic well tool transmitter receiver array including an attenuation and delay apparatus
US5030873A (en) * 1989-08-18 1991-07-09 Southwest Research Institute Monopole, dipole, and quadrupole borehole seismic transducers
US4969129A (en) * 1989-09-20 1990-11-06 Texaco Inc. Coding seismic sources
US5214251A (en) * 1990-05-16 1993-05-25 Schlumberger Technology Corporation Ultrasonic measurement apparatus and method
FR2678074B1 (fr) * 1991-06-18 1996-05-24 Schlumberger Services Petrol Procede d'exploration geophysique.
US5237540A (en) 1992-08-21 1993-08-17 Schlumberger Technology Corporation Logging while drilling tools utilizing magnetic positioner assisted phase shifts
US5460047A (en) * 1992-11-13 1995-10-24 Panametrics, Inc. Flow measurement system including ultrasonic transducers
US5377160A (en) * 1993-08-05 1994-12-27 Computalog Research, Inc. Transmitter and receiver to radially scan the cementing conditions in cased wells
CA2133286C (en) * 1993-09-30 2005-08-09 Gordon Moake Apparatus and method for measuring a borehole
US5387767A (en) * 1993-12-23 1995-02-07 Schlumberger Technology Corporation Transmitter for sonic logging-while-drilling
NO308264B1 (no) * 1994-03-22 2000-08-21 Western Atlas Int Inc Brønnloggesonde med tilnærmet sylindrisk oppstilling av piezo- elektriske akustiske transdusere for elektronisk styring og fokusering av akustiske signaler

Also Published As

Publication number Publication date
NO965241D0 (no) 1996-12-06
EP0778473A3 (en) 1999-08-11
DE69632300D1 (de) 2004-06-03
CA2192276C (en) 2005-02-08
AU721408B2 (en) 2000-07-06
BR9605866A (pt) 1998-08-25
AU7410796A (en) 1997-06-12
CA2192276A1 (en) 1997-06-08
US5753812A (en) 1998-05-19
EP0778473A2 (en) 1997-06-11
EP0778473B1 (en) 2004-04-28
BR9605866B1 (pt) 2008-11-18
NO328922B1 (no) 2010-06-14
CN1165956A (zh) 1997-11-26
CN1102742C (zh) 2003-03-05

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