NO961198L - Kjernemagnetisk resonansloggeapparat for borehull og fremgangsmåte ved logging - Google Patents

Kjernemagnetisk resonansloggeapparat for borehull og fremgangsmåte ved logging

Info

Publication number
NO961198L
NO961198L NO961198A NO961198A NO961198L NO 961198 L NO961198 L NO 961198L NO 961198 A NO961198 A NO 961198A NO 961198 A NO961198 A NO 961198A NO 961198 L NO961198 L NO 961198L
Authority
NO
Norway
Prior art keywords
borehole
magnetic resonance
nuclear magnetic
logging procedure
logger
Prior art date
Application number
NO961198A
Other languages
English (en)
Other versions
NO961198D0 (no
NO315065B1 (no
Inventor
Robert L Kleinberg
Lawrence L Latour
Abdurrahman Sezginer
Original Assignee
Schlumberger Technology Bv
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 Technology Bv filed Critical Schlumberger Technology Bv
Publication of NO961198D0 publication Critical patent/NO961198D0/no
Publication of NO961198L publication Critical patent/NO961198L/no
Publication of NO315065B1 publication Critical patent/NO315065B1/no

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/30—Assessment of water resources

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
NO19961198A 1995-03-23 1996-03-22 Nukle¶r magnetisk resonansloggeapparat for borehull og fremgangsmåte ved logging for å bestemme et volum av hydrokarboner uavhengig av endiffusjonskoeffisient NO315065B1 (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US39499495A 1995-03-23 1995-03-23

Publications (3)

Publication Number Publication Date
NO961198D0 NO961198D0 (no) 1996-03-22
NO961198L true NO961198L (no) 1996-09-24
NO315065B1 NO315065B1 (no) 2003-06-30

Family

ID=23561257

Family Applications (1)

Application Number Title Priority Date Filing Date
NO19961198A NO315065B1 (no) 1995-03-23 1996-03-22 Nukle¶r magnetisk resonansloggeapparat for borehull og fremgangsmåte ved logging for å bestemme et volum av hydrokarboner uavhengig av endiffusjonskoeffisient

Country Status (5)

Country Link
US (1) US5796252A (no)
AU (1) AU711508B2 (no)
CA (1) CA2172424C (no)
GB (1) GB2299170B (no)
NO (1) NO315065B1 (no)

Families Citing this family (99)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US5698979A (en) * 1996-02-23 1997-12-16 Western Atlas International, Inc. Method for NMR diffusion measurement
MY122012A (en) * 1996-03-14 2006-03-31 Shell Int Research Determining a fluid fraction in an earth formation
US6051973A (en) 1996-12-30 2000-04-18 Numar Corporation Method for formation evaluation while drilling
US6531868B2 (en) 1996-12-30 2003-03-11 Halliburton Energy Services, Inc. System and methods for formation evaluation while drilling
US6166540A (en) * 1997-06-30 2000-12-26 Wollin Ventures, Inc. Method of resistivity well logging utilizing nuclear magnetic resonance
US6111408A (en) * 1997-12-23 2000-08-29 Numar Corporation Nuclear magnetic resonance sensing apparatus and techniques for downhole measurements
US6097184A (en) * 1997-12-31 2000-08-01 Schlumberger Technology Corporation Nuclear magnetic resonance well logging to determine gas-filled porosity and oil-filled porosity of earth formations without a constant static magnetic field gradient
CA2318033A1 (en) 1998-01-16 1999-07-22 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
US6184681B1 (en) 1998-03-03 2001-02-06 Schlumberger Technology Corporation Apparatus and method for computing a distribution of spin-spin relaxation times
US6291995B1 (en) 1998-03-03 2001-09-18 Schlumberger Technology Corporation Apparatus and method for generating a pulse sequence
US6246236B1 (en) 1998-03-03 2001-06-12 Schlumberger Technology Corporation Apparatus and method for obtaining a nuclear magnetic resonance measurement while drilling
US6727696B2 (en) * 1998-03-06 2004-04-27 Baker Hughes Incorporated Downhole NMR processing
US6492809B1 (en) * 1998-12-04 2002-12-10 Schlumberger Technology Corporation Preconditioning spins near a nuclear magnetic resonance region
AU737283B2 (en) * 1998-07-30 2001-08-16 Schlumberger Holdings Limited Nuclear magnetic resonance logging with azimuthal resolution using gradient coils
US6326784B1 (en) 1998-11-05 2001-12-04 Schlumberger Technology Corporation Nuclear magnetic resonance logging with azimuthal resolution using gradient coils
US6891369B2 (en) * 1998-08-13 2005-05-10 Schlumberger Technology Corporation Nuclear magnetic resonance method and logging apparatus for fluid analysis
US6346813B1 (en) * 1998-08-13 2002-02-12 Schlumberger Technology Corporation Magnetic resonance method for characterizing fluid samples withdrawn from subsurface formations
US6107796A (en) * 1998-08-17 2000-08-22 Numar Corporation Method and apparatus for differentiating oil based mud filtrate from connate oil
US6255818B1 (en) 1998-08-18 2001-07-03 Schlumberger Technology Corporation Method and apparatus for performing magnetic resonance measurements
US6377042B1 (en) 1998-08-31 2002-04-23 Numar Corporation Method and apparatus for merging of NMR echo trains in the time domain
US6429654B1 (en) * 1998-09-11 2002-08-06 Baker Hughes Incorporated Nuclear magnetic resonance pulse sequence for improving signal-to-noise ratio
US6366087B1 (en) 1998-10-30 2002-04-02 George Richard Coates NMR logging apparatus and methods for fluid typing
US6229308B1 (en) 1998-11-19 2001-05-08 Schlumberger Technology Corporation Formation evaluation using magnetic resonance logging measurements
US6316940B1 (en) 1999-03-17 2001-11-13 Numar Corporation System and method for identification of hydrocarbons using enhanced diffusion
US6570381B1 (en) * 1999-03-25 2003-05-27 Schlumberger Technology Corporation Nuclear magnetic resonance well logging method and apparatus
NO324200B1 (no) * 1999-04-19 2007-09-10 Baker Hughes Inc Kjernemagnetiske resonansmalinger i bronnlogging som benytter en optimalisert refaseregulerende pulssekvens
AU2004200906B2 (en) * 1999-04-19 2007-01-18 Baker Hughes Incorporated Nuclear magnetic resonance measurements in well logging using an optimized rephasing pulse sequence
US6661226B1 (en) 1999-08-13 2003-12-09 Halliburton Energy Services, Inc. NMR apparatus and methods for measuring volumes of hydrocarbon gas and oil
US6331775B1 (en) * 1999-09-15 2001-12-18 Baker Hughes Incorporated Gas zone evaluation by combining dual wait time NMR data with density data
US6255819B1 (en) 1999-10-25 2001-07-03 Halliburton Energy Services, Inc. System and method for geologically-enhanced magnetic resonance imaging logs
US6600497B1 (en) * 1999-11-15 2003-07-29 Elliot A. Gottfurcht Apparatus and method to navigate interactive television using unique inputs with a remote control
US7020845B1 (en) 1999-11-15 2006-03-28 Gottfurcht Elliot A Navigating internet content on a television using a simplified interface and a remote control
US6522136B1 (en) 1999-12-10 2003-02-18 Schlumberger Technology Corporation Well logging technique and apparatus for determining pore characteristics of earth formations using magnetic resonance
US6541969B2 (en) 1999-12-15 2003-04-01 Halliburton Energy Services, Inc. Method and apparatus for improving the vertical resolution of NMR logs
US20040150677A1 (en) * 2000-03-03 2004-08-05 Gottfurcht Elliot A. Method for navigating web content with a simplified interface using audible commands
US6611881B1 (en) 2000-03-15 2003-08-26 Personal Data Network Corporation Method and system of providing credit card user with barcode purchase data and recommendation automatically on their personal computer
US6498484B1 (en) * 2000-06-15 2002-12-24 Schlumberger Technology Corporation Method for reducing ringing in nuclear magnetic resonance well logging instruments
US6445180B1 (en) * 2000-06-28 2002-09-03 Baker Hughes Incorporated Nuclear magnetic resonance tool with active RF spoiler antenna
CA2325348C (en) 2000-11-08 2011-01-11 University Technologies International Inc. Quantification of bitumen using nmr
US6577125B2 (en) 2000-12-18 2003-06-10 Halliburton Energy Services, Inc. Temperature compensated magnetic field apparatus for NMR measurements
US6518755B2 (en) 2001-04-10 2003-02-11 Baker Hughes Incorporated Measurement technique and apparatus for high-resolution multi-volume NMR well logging
US6626027B1 (en) 2001-06-12 2003-09-30 Intertech Development Company Method and apparatus for detecting a gas leak using nuclear magnetic resonance
US6525534B2 (en) 2001-06-15 2003-02-25 Halliburton Energy Services, Inc. System and methods for NMR signal processing without phase alternated pair stacking
US6650114B2 (en) * 2001-06-28 2003-11-18 Baker Hughes Incorporated NMR data acquisition with multiple interecho spacing
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
US6528995B1 (en) * 2001-09-10 2003-03-04 Schlumberger Technology Corporation Methods and apparatus for measuring flow velocity in a wellbore using NMR and applications using same
US6686737B2 (en) * 2001-10-12 2004-02-03 Baker Hughes Incorporated Amplitude and/or phase modulated NMR pulse sequences
US6972564B2 (en) * 2001-11-06 2005-12-06 Baker Hughes Incorporated Objective oriented methods for NMR log acquisitions for estimating earth formation and fluid properties
FR2832255B1 (fr) * 2001-11-13 2004-11-26 France Telecom Peigne et procede de derivation d'un cablage preexistant
US6774628B2 (en) * 2002-01-18 2004-08-10 Schlumberger Technology Corporation Nuclear magnetic resonance imaging using phase encoding with non-linear gradient fields
US6984980B2 (en) * 2002-02-14 2006-01-10 Baker Hughes Incorporated Method and apparatus for NMR sensor with loop-gap resonator
US6883702B2 (en) 2002-03-21 2005-04-26 Schlumberger Technology Corporation Method and apparatus for NMR measurement of wettability
US20040150676A1 (en) * 2002-03-25 2004-08-05 Gottfurcht Elliot A. Apparatus and method for simple wide-area network navigation
US6850060B2 (en) 2002-04-17 2005-02-01 Schlumberger Technology Corporation Method and apparatus for rapid characterization of diffusion
US6833698B2 (en) * 2002-05-15 2004-12-21 Chevrontexaco U.S.A. Inc. Methods of decoupling diffusion effects from relaxation times to determine properties of porous media containing fluids
US6937013B2 (en) * 2002-06-19 2005-08-30 Schlumberger Technology Corporation NMR tool for making formation evaluation measurements using gradient echoes
US6781371B2 (en) 2002-09-06 2004-08-24 Schlumberger Technology Corporation High vertical resolution antennas for NMR logging
US6586932B1 (en) 2002-10-16 2003-07-01 Schlumberger Technology Corporation Enhanced performance antennas for NMR logging
US6856132B2 (en) 2002-11-08 2005-02-15 Shell Oil Company Method and apparatus for subterranean formation flow imaging
US6894493B2 (en) * 2003-01-16 2005-05-17 Schlumberger Technology Corporation Method and apparatus for NMR measurement of magnetic materials
US6841996B2 (en) * 2003-01-22 2005-01-11 Schlumberger Technology Corporation Nuclear magnetic resonance apparatus and methods for analyzing fluids extracted from earth formation
US7493646B2 (en) 2003-01-30 2009-02-17 United Video Properties, Inc. Interactive television systems with digital video recording and adjustable reminders
GB2397893B (en) * 2003-01-30 2005-04-06 Schlumberger Holdings Permanently eccentered formation tester
US9376910B2 (en) 2003-03-07 2016-06-28 Halliburton Energy Services, Inc. Downhole formation testing and sampling apparatus having a deployment packer
US7128144B2 (en) 2003-03-07 2006-10-31 Halliburton Energy Services, Inc. Formation testing and sampling apparatus and methods
US6937014B2 (en) * 2003-03-24 2005-08-30 Chevron U.S.A. Inc. Method for obtaining multi-dimensional proton density distributions from a system of nuclear spins
WO2004099817A2 (en) 2003-05-02 2004-11-18 Halliburton Energy Services, Inc. Systems and methods for nmr logging
MXPA06003671A (es) 2003-10-03 2006-06-20 Halliburton Energy Serv Inc Sistema y metodos para diagrafias basadas en t1.
WO2005067569A2 (en) * 2004-01-04 2005-07-28 Halliburton Energy Services, Inc. Method and apparatus for detecting hydrocarbons with nmr logs in wells drilled with oil-based muds
US7053611B2 (en) * 2004-06-04 2006-05-30 Schlumberger Technology Corporation Method and apparatus for using pulsed field gradient NMR measurements to determine fluid properties in a fluid sampling well logging tool
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
US7412898B1 (en) * 2006-07-28 2008-08-19 Disney Enterprises, Inc. Load sensing system including RFID tagged fasteners
US7253618B1 (en) 2006-12-19 2007-08-07 Schlumberger Technology Corporation Method for determining more accurate diffusion coefficient distributions of reservoir fluids using Bi-polar pulsed field gradients
US7564240B2 (en) * 2007-06-19 2009-07-21 Schlumberger Technology Corporation Method and apparatus for measuring free induction decay signal and its application to composition analysis
US7741841B2 (en) * 2007-12-28 2010-06-22 Schlumberger Technology Corporation Time-lapsed diffusivity logging for monitoring enhanced oil recovery
CA2730067A1 (en) * 2008-07-11 2010-01-14 Schlumberger Canada Limited Nmr logging of miscible displacement
US8212567B2 (en) * 2008-10-20 2012-07-03 Baker Hughes Incorporated Externally mounted band antennae requiring minimal metal cutting on drillstring for reduction of mechanical stresses
US8258790B2 (en) * 2008-11-20 2012-09-04 Baker Hughes Incorporated Oscillator sensor for determining a property of an earth formation
US8191416B2 (en) * 2008-11-24 2012-06-05 Schlumberger Technology Corporation Instrumented formation tester for injecting and monitoring of fluids
US7999542B2 (en) * 2009-04-30 2011-08-16 Schlumberger Technology Corporation Method for determining formation parameter
US10162026B2 (en) * 2009-11-09 2018-12-25 Vista Clara Inc. Noise canceling in-situ NMR detection
US8816684B2 (en) * 2009-11-09 2014-08-26 Vista Clara Inc. Noise canceling in-situ NMR detection
US8427145B2 (en) 2010-03-24 2013-04-23 Schlumberger Technology Corporation System and method for emulating nuclear magnetic resonance well logging tool diffusion editing measurements on a bench-top nuclear magnetic resonance spectrometer for laboratory-scale rock core analysis
US9494665B2 (en) 2010-06-24 2016-11-15 Ramot At Tel-Aviv University Ltd. Magnetic resonance analysis using a plurality of pairs of bipolar gradient pulses
US20120074934A1 (en) * 2010-09-29 2012-03-29 Derrick Green Nmr measurements and methods of analyzing nmr data
US10132894B2 (en) * 2012-01-11 2018-11-20 Schlumberger Technology Corporation Magnetic resonance imaging methods
US9322948B2 (en) 2012-03-07 2016-04-26 Schlumberger Technology Corporation Method of determining a formation parameter
US11073633B2 (en) * 2014-08-27 2021-07-27 Schlumberger Technology Corporation Nmr asic
US9823205B2 (en) 2014-11-17 2017-11-21 Schlumberger Technology Corporation Methods and systems for determining surface relaxivity of a medium using nuclear magnetic resonance
US20160161629A1 (en) * 2014-12-05 2016-06-09 Schlumberger Technology Corporation Monitoring Carbon Dioxide Flooding Using Nuclear Magnetic Resonance (NMR) Measurements
US9851315B2 (en) 2014-12-11 2017-12-26 Chevron U.S.A. Inc. Methods for quantitative characterization of asphaltenes in solutions using two-dimensional low-field NMR measurement
US10634746B2 (en) 2016-03-29 2020-04-28 Chevron U.S.A. Inc. NMR measured pore fluid phase behavior measurements
WO2018000044A1 (en) * 2016-07-01 2018-01-04 Nmr Services Australia Downhole diffusion coefficient measurement
CN107907911A (zh) * 2017-10-17 2018-04-13 中国石油天然气股份有限公司 基于核磁共振的致密储层含油量测定方法
CN110029990B (zh) * 2019-04-15 2022-12-09 中国海洋石油集团有限公司 一种核磁共振测井方法和装置
US20230132047A1 (en) * 2021-10-22 2023-04-27 Vista Clara Inc. Switched gradient field measurement techniques for surface nmr

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3657730A (en) * 1970-01-14 1972-04-18 Shell Oil Co Method for determining residual hydrocarbons present in a subterranean earth formation
US3826972A (en) * 1973-08-17 1974-07-30 Univ Leland Stanford Junior Method and apparatus for detecting nuclear magnetic resonance
US4719423A (en) * 1985-08-13 1988-01-12 Shell Oil Company NMR imaging of materials for transport properties
US5055788A (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
US5212447A (en) * 1990-12-03 1993-05-18 Numar Corporation Apparatus and technique for nmr diffusion measurement
EP0560893B1 (en) * 1990-12-05 1996-11-20 Numar Corporation System for nmr logging a well during the drilling thereof
US5153514A (en) * 1991-02-19 1992-10-06 Schlumberger Technology Corp. Antenna and wear plates for borehole logging apparatus
US5387865A (en) * 1991-09-20 1995-02-07 Exxon Research And Engineering Company Permeability determination from NMR relaxation measurements for fluids in porous media
DE69314261T2 (de) * 1992-07-30 1998-04-09 Schlumberger Technology Bv Gepulster NMR-Gerät zur Formationsbewertung während des Bohrens
US5486762A (en) * 1992-11-02 1996-01-23 Schlumberger Technology Corp. Apparatus including multi-wait time pulsed NMR logging method for determining accurate T2-distributions and accurate T1/T2 ratios and generating a more accurate output record using the updated T2-distributions and T1/T2 ratios
US5291137A (en) * 1992-11-02 1994-03-01 Schlumberger Technology Corporation Processing method and apparatus for processing spin echo in-phase and quadrature amplitudes from a pulsed nuclear magnetism tool and producing new output data to be recorded on an output record
US5363041A (en) * 1992-12-31 1994-11-08 Schlumberger Technology Corporation Determining bound and unbound fluid volumes using nuclear magnetic resonance pulse sequences
US5428291A (en) * 1993-07-01 1995-06-27 Exxon Research And Engineering Company Determination of fluid transport properties in porous media by nuclear magnetic resonance measurements of fluid flow
US5497087A (en) * 1994-10-20 1996-03-05 Shell Oil Company NMR logging of natural gas reservoirs
US5498960A (en) * 1994-10-20 1996-03-12 Shell Oil Company NMR logging of natural gas in reservoirs

Also Published As

Publication number Publication date
GB2299170A (en) 1996-09-25
US5796252A (en) 1998-08-18
GB2299170B (en) 1997-05-28
NO961198D0 (no) 1996-03-22
NO315065B1 (no) 2003-06-30
AU711508B2 (en) 1999-10-14
CA2172424A1 (en) 1996-09-24
AU4814096A (en) 1996-10-03
CA2172424C (en) 2006-02-07
GB9605799D0 (en) 1996-05-22

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