FR2770304B1 - Structure et composition d'un materiau magnetique permanent pour la suppression des courants de foucault dans un capteur a resonance magnetique nucleaire - Google Patents

Structure et composition d'un materiau magnetique permanent pour la suppression des courants de foucault dans un capteur a resonance magnetique nucleaire

Info

Publication number
FR2770304B1
FR2770304B1 FR9813767A FR9813767A FR2770304B1 FR 2770304 B1 FR2770304 B1 FR 2770304B1 FR 9813767 A FR9813767 A FR 9813767A FR 9813767 A FR9813767 A FR 9813767A FR 2770304 B1 FR2770304 B1 FR 2770304B1
Authority
FR
France
Prior art keywords
suppression
composition
eddy currents
resonance sensor
magnetic resonance
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
FR9813767A
Other languages
English (en)
Other versions
FR2770304A1 (fr
Inventor
Zvi Taicher Gersh
Arcady Reiderman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Western Atlas International Inc
Original Assignee
Western Atlas International 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 Western Atlas International Inc filed Critical Western Atlas International Inc
Publication of FR2770304A1 publication Critical patent/FR2770304A1/fr
Application granted granted Critical
Publication of FR2770304B1 publication Critical patent/FR2770304B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
    • G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
    • G01N24/081—Making measurements of geologic samples, e.g. measurements of moisture, pH, porosity, permeability, tortuosity or viscosity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/383—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using permanent magnets
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
    • G01V3/32—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with electron or nuclear magnetic resonance

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Geophysics (AREA)
  • Remote Sensing (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Hard Magnetic Materials (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
FR9813767A 1997-10-29 1998-10-29 Structure et composition d'un materiau magnetique permanent pour la suppression des courants de foucault dans un capteur a resonance magnetique nucleaire Expired - Fee Related FR2770304B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/959,766 US6069479A (en) 1996-11-04 1997-10-29 Permanent magnet material composition and structure for eddy current suppression in a nuclear magnetic resonance sensing apparatus

Publications (2)

Publication Number Publication Date
FR2770304A1 FR2770304A1 (fr) 1999-04-30
FR2770304B1 true FR2770304B1 (fr) 2001-02-02

Family

ID=25502379

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9813767A Expired - Fee Related FR2770304B1 (fr) 1997-10-29 1998-10-29 Structure et composition d'un materiau magnetique permanent pour la suppression des courants de foucault dans un capteur a resonance magnetique nucleaire

Country Status (8)

Country Link
US (1) US6069479A (fr)
CA (1) CA2246279C (fr)
FR (1) FR2770304B1 (fr)
GB (1) GB2331809B (fr)
ID (1) ID21428A (fr)
IL (1) IL126051A (fr)
NO (1) NO983931L (fr)
RU (1) RU2195007C2 (fr)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7235970B2 (en) * 2000-06-28 2007-06-26 Baker Hughes Incorporated Antenna core material for use in MWD resistivity measurements and NMR measurements
US6452388B1 (en) * 2000-06-28 2002-09-17 Baker Hughes Incorporated Method and apparatus of using soft non-ferritic magnetic material in a nuclear magnetic resonance probe
US6844727B2 (en) * 2000-06-28 2005-01-18 Baker Hughes Incorporated Method and apparatus of reducing ringing in a nuclear magnetic resonance probe
DE10039076A1 (de) * 2000-08-10 2002-02-21 Bosch Gmbh Robert Brennstoffeinspritzventil
US6518754B1 (en) 2000-10-25 2003-02-11 Baker Hughes Incorporated Powerful bonded nonconducting permanent magnet for downhole use
US6577125B2 (en) * 2000-12-18 2003-06-10 Halliburton Energy Services, Inc. Temperature compensated magnetic field apparatus for NMR measurements
RU2181901C1 (ru) * 2001-01-19 2002-04-27 Акционерное общество закрытого типа Научно-производственная фирма по геофизическим и геоэкологическим работам "КАРОТАЖ" Способ каротажа с использованием ядерно-магнитного резонанса и устройство для его осуществления
FR2832255B1 (fr) * 2001-11-13 2004-11-26 France Telecom Peigne et procede de derivation d'un cablage preexistant
US6856132B2 (en) 2002-11-08 2005-02-15 Shell Oil Company Method and apparatus for subterranean formation flow imaging
EP1642156B1 (fr) * 2003-05-02 2020-03-04 Halliburton Energy Services, Inc. Systemes et procedes pour la diagraphie par resonance magnetique nucleaire
US6938469B2 (en) * 2003-08-06 2005-09-06 Schlumberger Technology Corporation Method for determining properties of formation fluids
US7660074B1 (en) 2003-09-11 2010-02-09 Hutchinson Technology Incorporated Webbed ground plane structure for integrated lead suspensions
CA2540791C (fr) 2003-10-03 2013-12-10 Halliburton Energy Services, Inc. Systeme et procedes de diagraphie a base t1
US7298136B1 (en) * 2005-07-06 2007-11-20 Kevin Mark Curtis Magnetically coupled electrical test lead
CN101568294A (zh) * 2006-12-20 2009-10-28 皇家飞利浦电子股份有限公司 用于影响和/或检测作用区域中的磁性颗粒的布置和方法
EP2258032A2 (fr) * 2008-02-22 2010-12-08 Access Business Group International LLC Positionnement magnétique pour couplage inductif
WO2011112391A1 (fr) * 2010-03-09 2011-09-15 Conocophillips Company-Ip Services Group Systèmes de surveillance des déformations des formations souterraines
WO2012170014A1 (fr) * 2011-06-07 2012-12-13 Halliburton Energy Services, Inc. Indexage en rotation pour optimiser le volume de détection d'un outil de diagraphie par résonance magnétique nucléaire
CN102915778B (zh) * 2012-09-21 2015-07-08 中国核电工程有限公司 利用功能组分析法对核电厂数字化仪控系统进行失电分析的方法
US20140363326A1 (en) 2013-06-10 2014-12-11 Grid Logic Incorporated System and method for additive manufacturing
WO2015050886A1 (fr) 2013-10-02 2015-04-09 Grid Logic Incorporated Chauffage par concentrateurs de flux
US10241850B2 (en) 2013-10-02 2019-03-26 Grid Logic Incorporated Non-magnetodielectric flux concentrator
AU2014415659B2 (en) 2014-12-30 2018-04-05 Halliburton Energy Services, Inc. Nuclear magnetic resonance tool with projections for improved measurements
CN108698160B (zh) 2016-02-03 2021-08-10 网格逻辑有限公司 用于制造部件的系统和方法
JP2022543664A (ja) * 2019-08-12 2022-10-13 ボマテック マネジメント アーゲー １つ以上の溝を有する、電気機械で使用するための永久磁石
CN111472766A (zh) * 2020-05-06 2020-07-31 中国石油天然气集团有限公司 一种井下核磁共振测井仪的磁体
WO2021226531A2 (fr) 2020-05-08 2021-11-11 Grid Logic Incorporated Système et procédé de fabrication d'une pièce

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2141236B (en) * 1983-06-09 1986-12-10 Nat Res Dev Nuclear magnetic logging
EP0167639A1 (fr) * 1984-06-28 1986-01-15 E.I. Du Pont De Nemours And Company Appareil pour la production d'images en résonance magnétique nucléaire comportant un aimant permanent
US5055787A (en) * 1986-08-27 1991-10-08 Schlumberger Technology Corporation Borehole measurement of NMR characteristics of earth formations
JPS6449549A (en) * 1987-08-20 1989-02-27 Sanyo Electric Co Magnetic resonance imaging apparatus
JPS6474681A (en) * 1987-09-17 1989-03-20 Nissan Motor Segment detecting device
DE69332601D1 (de) * 1992-03-18 2003-02-06 Sumitomo Spec Metals Magnetfeld-generator zur bilddarstellung mittels kernresonanz
US5376884A (en) * 1993-04-01 1994-12-27 Schlumberger Technology Corporation Nuclear magnetic resonance measuring apparatus
US5757186A (en) * 1996-02-23 1998-05-26 Western Atlas International, Inc. Nuclear magnetic resonance well logging apparatus and method adapted for measurement-while-drilling
US5659250A (en) * 1996-03-19 1997-08-19 Intermagnetics General Corporation Full brick construction of magnet assembly having a central bore
JPH10174681A (ja) * 1996-12-17 1998-06-30 Shin Etsu Chem Co Ltd 永久磁石磁気回路

Also Published As

Publication number Publication date
GB2331809B (en) 2002-06-05
GB9819056D0 (en) 1998-10-28
CA2246279A1 (fr) 1999-04-10
NO983931D0 (no) 1998-08-26
GB2331809A (en) 1999-06-02
FR2770304A1 (fr) 1999-04-30
RU2195007C2 (ru) 2002-12-20
IL126051A0 (en) 1999-05-09
NO983931L (no) 1999-04-30
IL126051A (en) 2002-07-25
US6069479A (en) 2000-05-30
CA2246279C (fr) 2002-03-26
ID21428A (id) 1999-06-10

Similar Documents

Publication Publication Date Title
FR2770304B1 (fr) Structure et composition d'un materiau magnetique permanent pour la suppression des courants de foucault dans un capteur a resonance magnetique nucleaire
EP1053487A4 (fr) Appareil et techniques de detection par resonance magnetique nucleaire
BR9503634A (pt) Composição nanocompósita magnética composição de tonalizador magnético e composição nanocompósita
DE69517895T2 (de) Magnetischer Toner und Bildherstellungsverfahren
DE69609493D1 (de) Magnetische modulation des kraftsensors zur wechseldetektion in einem rasterkraftmikroskop
DE69306085T2 (de) Lagesensor mit dauermagnet und magnetfeldmessung
FI932615A (fi) Järjestely napakengillä varustetun magneettikuvauslaitteen pyörrevirtojen minimoimiseksi
FI960242A0 (fi) Metod foer kvantifiering av vaotstyrkan hos papper och tillaempning av foerfarandet
ZA974197B (en) Magnetic detection of discontinuities in magnetic materials.
ITSV970048A0 (it) Magnete permanente per il rilevamento d'immagini in risonaza magnetica nucleare.
GB2245071B (en) Ferromagnetic eddy current probe having multiple levels of magnetization
ITSV20000017A0 (it) Metodo e macchina per il rilevamento d'immagini in risonanza magnetica nucleare
DE69310755D1 (de) Magnetischer sensor und magnetischer detektor
DE69622132T2 (de) Wirbelstrombremse des Permanentmagnettyps
DE69813093D1 (de) Amorphes Magnetmaterial und Magnetkern davon
IT1294051B1 (it) Struttura magnetica per la generazione di campi magnetici adatti all'uso nel rilevamento d'immagine in risonanza magnetica nucleare
DE69133005D1 (de) Verfahren und Gerät zur Messung des magnetischen Flussvektors
IT1296967B1 (it) Chiusura magnetica particolarmente per capi di abbigliamento e simili
FR2802681B1 (fr) Detection automatisee d'une information d'image sur faces en dessus et en dessous
DE69831983D1 (de) Reduktion von Wirbelströmen in "Fingerprint"-Gradientenspulen für die bildgebende magnetische Resonanz
DE69833781D1 (de) Verfahren und gerät der magnetischen resonanz zur bestimmung eines perfusions-bildes
EP0686854A3 (fr) Détection blindée des champs magnétiques à proximité
IT1273709B (it) Procedimento e dispositivo per la misura e la caratterizzazione ad alta velocita' di materiali magnetici
NO944598D0 (no) Fremgangsmåte for å detektere full magnetisering av elektro-permanent-magneter
IT1283651B1 (it) Chelati paramagnetici ad alta relassivita' in siero

Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20160630