NO983931L - Materialsammensetning for permanentmagnet og struktur for hvirvelstr°msundertrykking i et kjernemagnetisk resonans (NMR)-sensorapparat - Google Patents

Materialsammensetning for permanentmagnet og struktur for hvirvelstr°msundertrykking i et kjernemagnetisk resonans (NMR)-sensorapparat

Info

Publication number
NO983931L
NO983931L NO983931A NO983931A NO983931L NO 983931 L NO983931 L NO 983931L NO 983931 A NO983931 A NO 983931A NO 983931 A NO983931 A NO 983931A NO 983931 L NO983931 L NO 983931L
Authority
NO
Norway
Prior art keywords
magnetic
radio frequency
magnet
magnetic material
field
Prior art date
Application number
NO983931A
Other languages
English (en)
Other versions
NO983931D0 (no
Inventor
Gersh Zvi Taicher
Arcady Reiderman
Original Assignee
Western Atlas Int 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 Int Inc filed Critical Western Atlas Int Inc
Publication of NO983931D0 publication Critical patent/NO983931D0/no
Publication of NO983931L publication Critical patent/NO983931L/no

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)

Abstract

Et nukleært brønnloggeapparat for måling av magnetisk reso-nans som omfatter en antenne for indusering av et magnetisk felt med radiofrekvens i geologiske formasjoner som omringer apparatet og for deteksjon av nukleære magnetiske resonans-signaler fra den geologiske formasjonene; og en magnet for induksjon av et statisk magnetisk felt innenfor den geologiske formasjonen. Magneten blir formet fra et elektrisk ledende (konduktivt) permanentmagnetisk materiale på pulverform. Kornstørrelsen til det magnetiske materialet er liten nok i forhold til frekvensen til det magnetiske radiofrekvensfeltet for hovedsakelig å forhindre effekttap i det magnetiske radiofrekvensfeltet mellom kornene. Magneten blir satt sammen av elektrisk isolerte blokker av det magnetiske materialet som hver har en tykkelse mindre enn dybden som har overflate-effekt i det magnetiske radiofrekvensfeltet innenfor det magnetiske materialet. Grensene mellom blokkene blir orien-tert for å forhindre virvelstrømmer i magneten som er et resultat av det magnetiske radiofrekvensfeltet. I en fore-trukket utførelse omfatter det magnetiske materialet Samarium-Kobolt i pulverform bundet av et harpiks av epoxy.
NO983931A 1997-10-29 1998-08-26 Materialsammensetning for permanentmagnet og struktur for hvirvelstr°msundertrykking i et kjernemagnetisk resonans (NMR)-sensorapparat NO983931L (no)

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
NO983931D0 NO983931D0 (no) 1998-08-26
NO983931L true NO983931L (no) 1999-04-30

Family

ID=25502379

Family Applications (1)

Application Number Title Priority Date Filing Date
NO983931A NO983931L (no) 1997-10-29 1998-08-26 Materialsammensetning for permanentmagnet og struktur for hvirvelstr°msundertrykking i et kjernemagnetisk resonans (NMR)-sensorapparat

Country Status (8)

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

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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 (en) * 2003-05-02 2020-03-04 Halliburton Energy Services, Inc. Systems and methods for nmr logging
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 (en) 2003-10-03 2013-12-10 Halliburton Energy Services, Inc. System and methods for t1-based logging
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 (en) * 2008-02-22 2010-12-08 Access Business Group International LLC Magnetic positioning for inductive coupling
WO2011112391A1 (en) * 2010-03-09 2011-09-15 Conocophillips Company-Ip Services Group Subterranean formation deformation monitoring systems
WO2012170014A1 (en) * 2011-06-07 2012-12-13 Halliburton Energy Services, Inc. Rotational indexing to optimize sensing volume of a nuclear magnetic resonance logging tool
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 (en) 2013-10-02 2015-04-09 Grid Logic Incorporated Flux concentrator heating
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 (en) 2020-05-08 2021-11-11 Grid Logic Incorporated System and method for manufacturing a part

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 (en) * 1984-06-28 1986-01-15 E.I. Du Pont De Nemours And Company Permanent magnet NMR imaging apparatus
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
FR2770304B1 (fr) 2001-02-02
CA2246279A1 (en) 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
IL126051A (en) 2002-07-25
US6069479A (en) 2000-05-30
CA2246279C (en) 2002-03-26
ID21428A (id) 1999-06-10

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