NO20061391L - Kjernemagnetiske resonansmalinger i bronnlogging som benytter en optimalisert refaseregulerende pulssekvens - Google Patents

Kjernemagnetiske resonansmalinger i bronnlogging som benytter en optimalisert refaseregulerende pulssekvens

Info

Publication number
NO20061391L
NO20061391L NO20061391A NO20061391A NO20061391L NO 20061391 L NO20061391 L NO 20061391L NO 20061391 A NO20061391 A NO 20061391A NO 20061391 A NO20061391 A NO 20061391A NO 20061391 L NO20061391 L NO 20061391L
Authority
NO
Norway
Prior art keywords
high frequency
generate
field
pulse
paints
Prior art date
Application number
NO20061391A
Other languages
English (en)
Inventor
Robert Andrew Slade
Robert Hawkes
Alun Lucas
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
Publication of NO20061391L publication Critical patent/NO20061391L/no
Application filed by Baker Hughes Inc filed Critical Baker Hughes Inc

Links

Classifications

    • 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
    • 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
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
    • G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
    • G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
    • G01R33/5615—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE]
    • G01R33/5617—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE] using RF refocusing, e.g. RARE

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geology (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Remote Sensing (AREA)
  • Geophysics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

Et pulset NMR-redskap har et magnetarrangement som anvendes for å generere et statisk magnetfelt med hovedsakelig uniform feltstyrke innenfor et område av den formasjon som omgir borehullet. En høyfrekvensspole anvendes for å frembringe pulserende høyfrekvensfelt hovedsakelig vinkelrett på det statiske felt i det område som skal undersøkes. Kjernespinnene i formasjonen retter seg selv inn langs det utenfra påført statiske magnetfelt. Et pulserende høyfrekvensfelt påføres for å tippe spinnene inn i det tversgående plan, hvilket fører til en presesjon av spinnene. Tippepulsen etterfølges av en rekke refokuseringspulser og de resulterende rekker av pulsekkoer detekteres. Tidsstyringen og varigheten av høyfrekvenspulsene er forandret sammenlignet med vanlig CPMG for å oppnå størst mulig signalstyrke og nedsette høyfrekvens-effektforbruket til et minimum. En tilleggspuls for tvungen tilbakevending ved slutten av et ekkotog kan anvendes for å gjøre signaluttaket raskere og/eller frembringe et signal for å slette kunstig ringing.
NO20061391A 1999-04-19 2006-03-27 Kjernemagnetiske resonansmalinger i bronnlogging som benytter en optimalisert refaseregulerende pulssekvens NO20061391L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13000599P 1999-04-19 1999-04-19

Publications (1)

Publication Number Publication Date
NO20061391L true NO20061391L (no) 2000-10-20

Family

ID=22442600

Family Applications (3)

Application Number Title Priority Date Filing Date
NO20002028A NO324200B1 (no) 1999-04-19 2000-04-18 Kjernemagnetiske resonansmalinger i bronnlogging som benytter en optimalisert refaseregulerende pulssekvens
NO20061392A NO327685B1 (no) 1999-04-19 2006-03-27 Kjernemagnetisk resonansmalinger i bronnlegging som benytter en optimalisert refaseregulerende pulssekvens
NO20061391A NO20061391L (no) 1999-04-19 2006-03-27 Kjernemagnetiske resonansmalinger i bronnlogging som benytter en optimalisert refaseregulerende pulssekvens

Family Applications Before (2)

Application Number Title Priority Date Filing Date
NO20002028A NO324200B1 (no) 1999-04-19 2000-04-18 Kjernemagnetiske resonansmalinger i bronnlogging som benytter en optimalisert refaseregulerende pulssekvens
NO20061392A NO327685B1 (no) 1999-04-19 2006-03-27 Kjernemagnetisk resonansmalinger i bronnlegging som benytter en optimalisert refaseregulerende pulssekvens

Country Status (5)

Country Link
US (1) US6466013B1 (no)
AU (2) AU768699B2 (no)
CA (1) CA2306342C (no)
GB (1) GB2354326B (no)
NO (3) NO324200B1 (no)

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US6531868B2 (en) * 1996-12-30 2003-03-11 Halliburton Energy Services, Inc. System and methods for formation evaluation while drilling
US6541969B2 (en) * 1999-12-15 2003-04-01 Halliburton Energy Services, Inc. Method and apparatus for improving the vertical resolution of NMR logs
US6624629B1 (en) * 2000-05-08 2003-09-23 Schlumberger Technology Corporation Optimizing characteristics of RF pulses used in NMR measurements
US7126332B2 (en) * 2001-07-20 2006-10-24 Baker Hughes Incorporated Downhole high resolution NMR spectroscopy with polarization enhancement
WO2003019219A1 (en) * 2001-08-31 2003-03-06 Bondoc Edwin L Electron capture by magnetic resonance
US6686737B2 (en) * 2001-10-12 2004-02-03 Baker Hughes Incorporated Amplitude and/or phase modulated NMR pulse sequences
US6518757B1 (en) * 2002-03-08 2003-02-11 Schlumberger Technology Corporation Use of CPMG sequences with phase cycled refocusing pulses in inside-out NMR for phase encoded imaging and to eliminate coherent ringing within one scan
US7015694B2 (en) * 2002-08-19 2006-03-21 Baker Hughes Incorporated NMR apparatus and method for stochastic pulsing of earth formations
US7301337B2 (en) 2003-09-30 2007-11-27 Baker Hughes Incorporated Frequency dithering to avoid excitation pulse ringing
US20050080332A1 (en) * 2003-10-10 2005-04-14 Shiu Almon S. Near simultaneous computed tomography image-guided stereotactic radiotherapy
US7126333B2 (en) * 2004-04-19 2006-10-24 Baker Hughes Incorporated Method and apparatus for correcting ringing in NMR signals
US7180287B2 (en) * 2004-05-05 2007-02-20 Baker Hughes Incorporated Reduction of motion artifacts in NMR
US7034529B2 (en) * 2004-06-10 2006-04-25 Baker Hughes Incorporated Phase-alternated Carr-Purcell NMR echo sequence
US7196516B2 (en) 2004-08-16 2007-03-27 Baker Hughes Incorporated Correction of NMR artifacts due to constant-velocity axial motion and spin-lattice relaxation
CA2587896A1 (en) * 2004-11-22 2006-06-01 Baker Hughes Incorporated Fast t1 measurement of an earth formation by using driven equilibrium
US20070032956A1 (en) * 2004-11-22 2007-02-08 Baker Hughes Incorporated Fast T1 measurement by using driven equilibrium
GB2444680B (en) * 2006-06-06 2011-03-16 Halliburton Energy Serv Inc Fluid typing
US7804297B2 (en) * 2008-01-30 2010-09-28 Baker Hughes Incorporated Methodology for interpretation and analysis of NMR distributions
US8330460B2 (en) * 2008-01-30 2012-12-11 Baker Hughes Incorporated Method and apparatus for determining multiscale similarity between NMR measurements and a reference well log
US7808238B2 (en) * 2008-02-20 2010-10-05 Baker Hughes Incorporated Echo-decay-acceleration data acquisition method for gas identification using a low-field gradient
US8532929B2 (en) * 2009-12-07 2013-09-10 Baker Hughes Incorporated Method and apparatus to incorporate internal gradient and restricted diffusion in NMR inversion
US8836328B2 (en) * 2010-02-03 2014-09-16 Baker Hughes Incorporated Acoustic excitation with NMR pulse
US8781745B2 (en) 2010-08-03 2014-07-15 Baker Hughes Incorporated NMR-DNA fingerprint
US9658358B2 (en) * 2011-12-27 2017-05-23 Schlumberger Technology Corporation Refocusing pulses and excitation pulses for NMR logging
US20130181706A1 (en) 2012-01-18 2013-07-18 Baker Hughes Incorporated System and method to estimate a property of a fluid flow
US8912916B2 (en) 2012-02-15 2014-12-16 Baker Hughes Incorporated Non-uniform echo train decimation
AU2013330185B2 (en) * 2012-10-12 2018-01-18 Cgg Data Services Ag Electromagnetic system utilizing multiple pulse transmitter waveforms
US10488486B2 (en) * 2013-05-30 2019-11-26 Halliburton Energy Services, Inc. Nuclear magnetic resonance tool calibration
US20180217289A1 (en) * 2014-11-12 2018-08-02 Halliburton Energy Services Inc. Borehole Signal Reduction for a Side-Looking NMR Logging Tool Using a Refocusing Pulse Flipping Angle
DE102015222935B3 (de) * 2015-11-20 2017-03-09 Bruker Biospin Ag Winkelverstellbarer Messkopf einer NMR-MAS-Apparatur
DE102016108996A1 (de) * 2016-05-15 2017-11-16 Krohne Ag Verfahren zum Betreiben eines kernmagnetischen Durchflussmessgeräts und kernmagnetisches Durchflussmessgerät
US10900916B2 (en) 2018-07-16 2021-01-26 Baker Hughes, A Ge Company, Llc Method and apparatus to detect free induction decay NMR signals
US11346974B2 (en) 2018-09-11 2022-05-31 Schlumberger Technology Corporation Techniques for NMR logging with antenna arrays

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Also Published As

Publication number Publication date
NO327685B1 (no) 2009-09-14
GB2354326A8 (en) 2004-01-12
NO20061392L (no) 2000-10-20
GB2354326A (en) 2001-03-21
GB0009754D0 (en) 2000-06-07
AU768699B2 (en) 2004-01-08
AU2004200905A1 (en) 2004-04-01
AU2887300A (en) 2000-10-26
CA2306342C (en) 2003-07-29
GB2354326B (en) 2002-01-16
NO20002028D0 (no) 2000-04-18
CA2306342A1 (en) 2000-10-19
NO324200B1 (no) 2007-09-10
US6466013B1 (en) 2002-10-15
NO20002028L (no) 2000-10-20

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