CA2120400A1 - Nuclear magnetic resonance measuring apparatus - Google Patents

Nuclear magnetic resonance measuring apparatus

Info

Publication number
CA2120400A1
CA2120400A1 CA002120400A CA2120400A CA2120400A1 CA 2120400 A1 CA2120400 A1 CA 2120400A1 CA 002120400 A CA002120400 A CA 002120400A CA 2120400 A CA2120400 A CA 2120400A CA 2120400 A1 CA2120400 A1 CA 2120400A1
Authority
CA
Canada
Prior art keywords
magnets
magnetic resonance
nuclear magnetic
current loop
measuring apparatus
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.)
Granted
Application number
CA002120400A
Other languages
French (fr)
Other versions
CA2120400C (en
Inventor
Abdurrahman Sezginer
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.)
Schlumberger Canada Ltd
Original Assignee
Schlumberger Canada Ltd
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 Schlumberger Canada Ltd filed Critical Schlumberger Canada Ltd
Publication of CA2120400A1 publication Critical patent/CA2120400A1/en
Application granted granted Critical
Publication of CA2120400C publication Critical patent/CA2120400C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • G01R33/3808—Magnet assemblies for single-sided MR wherein the magnet assembly is located on one side of a subject only; Magnet assemblies for inside-out MR, e.g. for MR in a borehole or in a blood vessel, or magnet assemblies for fringe-field MR
    • 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
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • 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

Abstract

The disclosure invention is directed to a nuclear magnetic resonance measurement apparatus that can be utilized in a logging device which operates generally centrally in a borehole, and has a generally circumferential region of investigation, but which permits usage of relatively powerful permanent magnets, such as rare-earth magnets, that are not permeable to the RF magnetic field. This is achieved by employing side-by-side spaced apart elongated magnets, and an RF current loop in the region between the magnets. In a disclosed embodiment, the magnets are each in the shape of a segment of a cylinder, and the respective axes of elongation of the magnets are parallel. The magnets have respective casings with electrically conductive surfaces, and the RF current loop includes at least a portion of the conductive surfaces of the magnet casings.
CA002120400A 1993-04-01 1994-03-31 Nuclear magnetic resonance measuring apparatus Expired - Lifetime CA2120400C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/041,643 US5376884A (en) 1993-04-01 1993-04-01 Nuclear magnetic resonance measuring apparatus
US08/041,643 1993-04-01

Publications (2)

Publication Number Publication Date
CA2120400A1 true CA2120400A1 (en) 1994-10-02
CA2120400C CA2120400C (en) 2003-12-30

Family

ID=21917589

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002120400A Expired - Lifetime CA2120400C (en) 1993-04-01 1994-03-31 Nuclear magnetic resonance measuring apparatus

Country Status (5)

Country Link
US (2) US5376884A (en)
EP (1) EP0618458B1 (en)
AU (1) AU672674B2 (en)
CA (1) CA2120400C (en)
NO (1) NO305579B1 (en)

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0581666B1 (en) * 1992-07-30 1997-10-01 Schlumberger Limited Pulsed nuclear magnetism tool for formation evaluation while drilling
US5923167A (en) * 1992-07-30 1999-07-13 Schlumberger Technology Corporation Pulsed nuclear magnetism tool for formation evaluation while drilling
US5376884A (en) * 1993-04-01 1994-12-27 Schlumberger Technology Corporation Nuclear magnetic resonance measuring apparatus
US5936405A (en) * 1995-09-25 1999-08-10 Numar Corporation System and method for lithology-independent gas detection using multifrequency gradient NMR logging
US6242912B1 (en) 1995-10-12 2001-06-05 Numar Corporation System and method for lithology-independent gas detection using multifrequency gradient NMR logging
US6512371B2 (en) 1995-10-12 2003-01-28 Halliburton Energy Services, Inc. System and method for determining oil, water and gas saturations for low-field gradient NMR logging tools
US6956371B2 (en) * 1995-10-12 2005-10-18 Halliburton Energy Services, Inc. Method and apparatus for detecting diffusion sensitive phases with estimation of residual error in NMR logs
US6005389A (en) * 1996-03-15 1999-12-21 Numar Corporation Pulse sequences and interpretation techniques for NMR measurements
US6069479A (en) * 1996-11-04 2000-05-30 Western Atlas International, Inc. Permanent magnet material composition and structure for eddy current suppression in a nuclear magnetic resonance sensing apparatus
US5831433A (en) * 1996-12-04 1998-11-03 Sezginer; Abdurrahman Well logging method and apparatus for NMR and resistivity measurements
US6531868B2 (en) 1996-12-30 2003-03-11 Halliburton Energy Services, Inc. System and methods for formation evaluation while drilling
US6051973A (en) 1996-12-30 2000-04-18 Numar Corporation Method for formation evaluation while drilling
US6204663B1 (en) 1997-03-26 2001-03-20 Numar Corporation Pulse sequence and method for suppression of magneto-acoustic artifacts in NMR data
US6255817B1 (en) 1997-06-23 2001-07-03 Schlumberger Technology Corporation Nuclear magnetic resonance logging with azimuthal resolution
US5977768A (en) * 1997-06-23 1999-11-02 Schlumberger Technology Corporation Nuclear magnetic resonance logging with azimuthal resolution
US6166540A (en) * 1997-06-30 2000-12-26 Wollin Ventures, Inc. Method of resistivity well logging utilizing nuclear magnetic resonance
GB2368128B (en) * 1997-10-29 2002-08-28 Western Atlas Int Inc NMR sensing apparatus and methods
US6111408A (en) * 1997-12-23 2000-08-29 Numar Corporation Nuclear magnetic resonance sensing apparatus and techniques for downhole measurements
US6268726B1 (en) 1998-01-16 2001-07-31 Numar Corporation Method and apparatus for nuclear magnetic resonance measuring while drilling
US6023164A (en) * 1998-02-20 2000-02-08 Numar Corporation Eccentric NMR well logging apparatus and method
US6107796A (en) * 1998-08-17 2000-08-22 Numar Corporation Method and apparatus for differentiating oil based mud filtrate from connate oil
US6377042B1 (en) 1998-08-31 2002-04-23 Numar Corporation Method and apparatus for merging of NMR echo trains in the time domain
US6163151A (en) * 1998-09-09 2000-12-19 Baker Hughes Incorporated Apparatus and method for making nuclear magnetic measurements in a borehole
EG22421A (en) * 1998-10-02 2003-01-29 Shell Int Research Nmr logging assembly
US6366087B1 (en) 1998-10-30 2002-04-02 George Richard Coates NMR logging apparatus and methods for fluid typing
US6316940B1 (en) 1999-03-17 2001-11-13 Numar Corporation System and method for identification of hydrocarbons using enhanced diffusion
US6489763B1 (en) * 1999-07-12 2002-12-03 Schlumberger Technology Corporation Magnet assembly for nuclear magnetic resonance well logging tools
US6661226B1 (en) 1999-08-13 2003-12-09 Halliburton Energy Services, Inc. NMR apparatus and methods for measuring volumes of hydrocarbon gas and oil
US6255819B1 (en) 1999-10-25 2001-07-03 Halliburton Energy Services, Inc. System and method for geologically-enhanced magnetic resonance imaging logs
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
US6348792B1 (en) * 2000-07-27 2002-02-19 Baker Hughes Incorporated Side-looking NMR probe for oil well logging
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
US6940378B2 (en) 2001-01-19 2005-09-06 Halliburton Energy Services Apparatus and method for magnetic resonance measurements in an interior volume
RU2181901C1 (en) * 2001-01-19 2002-04-27 Акционерное общество закрытого типа Научно-производственная фирма по геофизическим и геоэкологическим работам "КАРОТАЖ" Logging method and device using nuclear-magnetic resonance
CA2440178C (en) * 2001-03-09 2009-12-29 Shell Canada Limited Logging system for use in a wellbore
US6518756B1 (en) 2001-06-14 2003-02-11 Halliburton Energy Services, Inc. Systems and methods for determining motion tool parameters in borehole logging
FR2832255B1 (en) * 2001-11-13 2004-11-26 France Telecom COMB AND METHOD FOR DERIVING PRE-EXISTING WIRING
US6984980B2 (en) * 2002-02-14 2006-01-10 Baker Hughes Incorporated Method and apparatus for NMR sensor with loop-gap resonator
US6956372B2 (en) * 2002-09-11 2005-10-18 Halliburton Energy Services, Inc. System and method for NMR logging with helical polarization
US6856132B2 (en) 2002-11-08 2005-02-15 Shell Oil Company Method and apparatus for subterranean formation flow imaging
WO2004099817A2 (en) 2003-05-02 2004-11-18 Halliburton Energy Services, Inc. Systems and methods for nmr logging
CA2852097A1 (en) 2003-10-03 2005-04-21 Halliburton Energy Services, Inc. System and methods for t1-based logging
US7586309B2 (en) * 2005-10-21 2009-09-08 Baker Hughes, Inc. Apparatus and method for guiding energy in a subsurface electromagnetic measuring system
US7221158B1 (en) 2005-12-12 2007-05-22 Schlumberger Technology Corporation Permeability determinations from nuclear magnetic resonance measurements
US8185314B2 (en) 2007-02-13 2012-05-22 Schlumberger Technology Corporation Method and system for determining dynamic permeability of gas hydrate saturated formations
US9575204B2 (en) 2012-02-08 2017-02-21 Halliburton Energy Services, Inc. Nuclear magnetic resonance logging tool having multiple pad-mounted atomic magnetometers
US10725130B2 (en) 2016-09-28 2020-07-28 Halliburton Energy Services, Inc. Nuclear magnetic resonance sensing device for downhole measurements

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3179878A (en) * 1953-03-09 1965-04-20 Schlumberger Well Surv Corp Method and apparatus for the nondestructive testing of materials
US3667035A (en) * 1970-03-17 1972-05-30 Texaco Development Corp Nuclear magnetism logging
US4350955A (en) * 1980-10-10 1982-09-21 The United States Of America As Represented By The United States Department Of Energy Magnetic resonance apparatus
GB2141236B (en) * 1983-06-09 1986-12-10 Nat Res Dev Nuclear magnetic logging
US4710713A (en) * 1986-03-11 1987-12-01 Numar Corporation Nuclear magnetic resonance sensing apparatus and techniques
US4714881A (en) * 1986-07-15 1987-12-22 Mobil Oil Corporation Nuclear magnetic resonance borehole logging tool
US4717876A (en) * 1986-08-13 1988-01-05 Numar NMR magnet system for well logging
US4933638A (en) * 1986-08-27 1990-06-12 Schlumber Technology Corp. Borehole measurement of NMR characteristics of earth formations, and interpretations thereof
US5055787A (en) * 1986-08-27 1991-10-08 Schlumberger Technology Corporation Borehole measurement of NMR characteristics of earth formations
US4717877A (en) * 1986-09-25 1988-01-05 Numar Corporation Nuclear magnetic resonance sensing apparatus and techniques
US4717878A (en) * 1986-09-26 1988-01-05 Numar Corporation Nuclear magnetic resonance sensing apparatus and techniques
US5153514A (en) * 1991-02-19 1992-10-06 Schlumberger Technology Corp. Antenna and wear plates for borehole logging apparatus
US5376884A (en) * 1993-04-01 1994-12-27 Schlumberger Technology Corporation Nuclear magnetic resonance measuring apparatus

Also Published As

Publication number Publication date
EP0618458A3 (en) 1995-05-24
NO305579B1 (en) 1999-06-21
US5376884A (en) 1994-12-27
AU5919994A (en) 1994-10-06
NO941203L (en) 1994-10-03
US5486761A (en) 1996-01-23
AU672674B2 (en) 1996-10-10
NO941203D0 (en) 1994-03-30
EP0618458A2 (en) 1994-10-05
CA2120400C (en) 2003-12-30
EP0618458B1 (en) 2002-06-19

Similar Documents

Publication Publication Date Title
CA2120400A1 (en) Nuclear magnetic resonance measuring apparatus
GB2339024B (en) Nuclear magnetic resonance logging with azimuthal resolution
DE69325255T2 (en) Magnetic resonance imaging enhancements
DE69419096D1 (en) Magnetic resonance imaging enhancements
DE69319090D1 (en) Magnetic resonance imaging enhancements
EP0231879A3 (en) Self-shielded gradient coils for nuclear magnetic resonance imaging
DE68907278T2 (en) Superconducting magnetic resonance magnet.
EP0964263A3 (en) Open supercondutive magnet having shielding
EP0217520A3 (en) Gradient field structure and method for use with magnetic resonance imaging apparatus
CA2246279A1 (en) Permanent magnet material composition and structure for eddy current suppression in a nuclear magnetic resonance sensing apparatus
NO955208L (en) Method and apparatus for examining an electrically conductive article
DE69407848D1 (en) Magnet arrangement for magnetic resonance imaging
DE60030144D1 (en) MR IMAGING SYSTEM WITH IMPROVED ACCESS
ES470479A1 (en) Device for detecting magnetic fields and method of making same
GB8321236D0 (en) Gradient null displacement coil
GB2317455B (en) Ferromagnetic spatial shielding for the superconducting high field magnet of an NMR spectrometer
GB2298927B (en) NMR spectrometer with superconducting magnet coil
DE69700319D1 (en) Magnet arrangement for imaging magnetic resonance with opposing permanent magnets
CA2269170A1 (en) Electromagnetic wave source probing device and probing method with the probing device
GB2388909B (en) NMR High field magnet coil system with superconducting capability and having an outwardly protruding inner coil section
IL108953A0 (en) Super conductive magnet for magnetic resonance systems
MY123093A (en) Magnetic position sensor
DE69113732T2 (en) Magnetic circuit with permanent magnet.
IT1264605B1 (en) ELECTRIC MOTOR WITH A DEVICE TO DETECT THE POSITION OF THE ROTOR, THE NUMBER OF REVOLUTIONS AND, OR THE DIRECTION OF ROTATION
GB9508540D0 (en) Ferromagnetic room shielding for the superconducting high field magnet of an nmr spectrometer

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20140331