WO2005036208A3 - System and methods for t1-based logging - Google Patents

System and methods for t1-based logging Download PDF

Info

Publication number
WO2005036208A3
WO2005036208A3 PCT/US2004/032336 US2004032336W WO2005036208A3 WO 2005036208 A3 WO2005036208 A3 WO 2005036208A3 US 2004032336 W US2004032336 W US 2004032336W WO 2005036208 A3 WO2005036208 A3 WO 2005036208A3
Authority
WO
WIPO (PCT)
Prior art keywords
methods
measurements
based logging
lwd
wireline
Prior art date
Application number
PCT/US2004/032336
Other languages
French (fr)
Other versions
WO2005036208A2 (en
Inventor
Ridvan Akkurt
Original Assignee
Halliburton Energy Serv Inc
Ridvan Akkurt
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 Halliburton Energy Serv Inc, Ridvan Akkurt filed Critical Halliburton Energy Serv Inc
Priority to MXPA06003671A priority Critical patent/MXPA06003671A/en
Priority to BRPI0414998-0A priority patent/BRPI0414998A/en
Priority to CA2540791A priority patent/CA2540791C/en
Priority to GB0606829A priority patent/GB2422201B/en
Publication of WO2005036208A2 publication Critical patent/WO2005036208A2/en
Publication of WO2005036208A3 publication Critical patent/WO2005036208A3/en
Priority to EGNA2006000319 priority patent/EG24372A/en

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
    • G01R33/50—NMR imaging systems based on the determination of relaxation times, e.g. T1 measurement by IR sequences; T2 measurement by multiple-echo sequences
    • 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

Abstract

System and methods for using nuclear magnetic resonance T1 measurements for wireline, LWD and MWD applications. T1 and T2 measurements are obtained by probe (30). Parameter estimator (40) derives values of parameters such as diffusion from T1 and T2 measurements.
PCT/US2004/032336 2003-10-03 2004-10-01 System and methods for t1-based logging WO2005036208A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
MXPA06003671A MXPA06003671A (en) 2003-10-03 2004-10-01 System and methods for t1-based logging.
BRPI0414998-0A BRPI0414998A (en) 2003-10-03 2004-10-01 methods for identifying gas in a geological formation, for analyzing geological formations, and for rmn for analyzing geological formations, and system
CA2540791A CA2540791C (en) 2003-10-03 2004-10-01 System and methods for t1-based logging
GB0606829A GB2422201B (en) 2003-10-03 2004-10-01 System And Methods For T1-Based Logging
EGNA2006000319 EG24372A (en) 2003-10-03 2006-04-03 System and methods for T1-based logging

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US50844203P 2003-10-03 2003-10-03
US60/508,442 2003-10-03

Publications (2)

Publication Number Publication Date
WO2005036208A2 WO2005036208A2 (en) 2005-04-21
WO2005036208A3 true WO2005036208A3 (en) 2005-09-29

Family

ID=34434911

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/032336 WO2005036208A2 (en) 2003-10-03 2004-10-01 System and methods for t1-based logging

Country Status (8)

Country Link
US (3) US7199580B2 (en)
AR (1) AR046271A1 (en)
BR (1) BRPI0414998A (en)
CA (3) CA2828175A1 (en)
EG (1) EG24372A (en)
GB (1) GB2422201B (en)
MX (1) MXPA06003671A (en)
WO (1) WO2005036208A2 (en)

Families Citing this family (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7199580B2 (en) * 2003-10-03 2007-04-03 Halliburton Energy Services, Inc. System and methods for T1-based logging
US7268547B2 (en) * 2003-10-07 2007-09-11 Baker Hughes Incorporated Correction of motion influences in NMR signals
US7176682B2 (en) * 2004-01-04 2007-02-13 Halliburton Energy Services, Inc. Method and apparatus for detecting hydrocarbons with NMR logs in wells drilled with oil-based muds
US7298142B2 (en) * 2005-06-27 2007-11-20 Baker Hughes Incorporated Method and apparatus for reservoir fluid characterization in nuclear magnetic resonance logging
GB2444680B (en) * 2006-06-06 2011-03-16 Halliburton Energy Serv Inc Fluid typing
WO2008010810A1 (en) * 2006-07-21 2008-01-24 Halliburton Energy Services, Inc. Fluid saturation estimation
WO2008088335A1 (en) * 2007-01-18 2008-07-24 Halliburton Energy Services, Inc. Simultaneous relaxation time inversion
EP1953571B1 (en) * 2007-02-05 2015-06-03 Services Pétroliers Schlumberger Nuclear tool used in a borehole to determine a property of the formation
EP2201410A4 (en) * 2007-10-12 2017-11-08 Exxonmobil Upstream Research Company Non-destructive determination of the pore size distribution and the distribution of fluid flow velocities
US8269501B2 (en) * 2008-01-08 2012-09-18 William Marsh Rice University Methods for magnetic imaging of geological structures
US9091781B2 (en) * 2008-06-25 2015-07-28 Schlumberger Technology Corporation Method for estimating formation permeability using time lapse measurements
WO2010004393A2 (en) * 2008-07-11 2010-01-14 Schlumberger Technology B.V. Nmr logging of miscible displacement
US8324895B2 (en) 2009-01-23 2012-12-04 Baker Hughes Incorporated MWD/LWD NMR imaging with long echo trains
US8373412B2 (en) 2009-01-23 2013-02-12 Baker Hughes Incorporated NMR-LWD imaging tool
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
US8970217B1 (en) 2010-04-14 2015-03-03 Hypres, Inc. System and method for noise reduction in magnetic resonance imaging
US10732314B2 (en) * 2011-09-01 2020-08-04 Schlumberger Technology Corporation Estimation of petrophysical and fluid properties using integral transforms in nuclear magnetic resonance
ITMI20111908A1 (en) * 2011-10-21 2013-04-22 Eni Spa METHOD OF PREDICTING THE PROPERTY OF CRUDES BY APPLICATION OF NEURAL NETWORKS
GB2509450A (en) * 2011-10-31 2014-07-02 Schlumberger Holdings Inversion-based workflow for processing nuclear density images in high-angle and horizontal wells
US9405036B2 (en) 2011-11-04 2016-08-02 Schlumberger Technology Corporation Multiphysics NMR logging techniques for the determination of in situ total gas in gas reservoirs
US10209389B2 (en) 2011-12-29 2019-02-19 Schlumberger Technology Corporation In-situ characterization of formation constituents
US9222902B2 (en) 2012-01-09 2015-12-29 Schlumberger Technology Corporation Estimations of nuclear magnetic resonance measurement distributions
US10353104B2 (en) * 2012-03-29 2019-07-16 Baker Hughes, A Ge Company, Llc Carbonate permeability by pore typing
US10107930B2 (en) 2012-05-16 2018-10-23 Halliburton Energy Services, Inc. Hybrid saturation recovery-inversion recovery pulse sequence for improved NMR logging of boreholes
US9939506B2 (en) * 2012-06-08 2018-04-10 Schlumberger Technology Corporation Methods of investigating formation samples using NMR data
MX343007B (en) 2012-06-29 2016-10-21 Halliburton Energy Services Inc Full tensor micro-impedance imaging.
US9897715B2 (en) 2012-06-29 2018-02-20 Halliburton Energy Services, Inc. Multi-axial induction borehole imager
US9244188B2 (en) * 2012-08-03 2016-01-26 Chevron U.S.A. Inc. System and method for estimating a nuclear magnetic resonance relaxation time cutoff
WO2014160794A1 (en) 2013-03-28 2014-10-02 Halliburton Energy Services, Inc. Data processing with magnetic resonance tool
US9791584B2 (en) 2013-05-14 2017-10-17 Schlumberger Technology Corporation Determining petrophysical properties using sodium nuclear magnetic resonance (NMR) logs
WO2015072985A1 (en) 2013-11-13 2015-05-21 Halliburton Energy Services, Inc. Dual antenna for circular polarization
US10197696B2 (en) * 2013-11-15 2019-02-05 Baker Hughes, A Ge Company, Llc NMR logging interpretation of solid invasion
US9671483B2 (en) 2014-02-26 2017-06-06 Baker Hughes Incorporated T2 inversions with reduced motion artifacts
US20160061986A1 (en) * 2014-08-27 2016-03-03 Schlumberger Technology Corporation Formation Property Characteristic Determination Methods
US10359532B2 (en) 2014-12-10 2019-07-23 Schlumberger Technology Corporation Methods to characterize formation properties
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
CN104747181B (en) * 2015-01-26 2017-12-12 中国海洋石油总公司 Detection means is demarcated with the probe sensitizing range for boring nuclear-magnetism survey meter
US10551521B2 (en) 2015-05-12 2020-02-04 Baker Hughes, A Ge Company, Llc Magnetic resonance pulse sequences and processing
US20180284312A1 (en) * 2015-10-19 2018-10-04 Halliburton Energy Services, Inc. T1 distribution-based logging systems and methods using blind source separation independent component analysis
WO2017074316A1 (en) * 2015-10-27 2017-05-04 Halliburton Energy Services, Inc. Viscosity determination apparatus, systems, and methods
US10466381B2 (en) * 2015-12-28 2019-11-05 Baker Hughes, A Ge Company, Llc NMR logging in formation with micro-porosity by using first echoes from multiple measurements
US10739489B2 (en) * 2016-01-15 2020-08-11 Baker Hughes, A Ge Company, Llc Low gradient magnetic resonance logging for measurement of light hydrocarbon reservoirs
US10634746B2 (en) 2016-03-29 2020-04-28 Chevron U.S.A. Inc. NMR measured pore fluid phase behavior measurements
US10429536B2 (en) 2016-04-04 2019-10-01 Baker Hughes, A Ge Company, Llc T2 inversions with reduced motion artifacts
US10190999B2 (en) 2016-05-11 2019-01-29 Saudi Arabian Oil Company Nuclear magnetic resonance and saturation well logs for determining free water level and reservoir type
US10267946B2 (en) 2016-06-01 2019-04-23 Baker Hughes, A Ge Company, Llc Magnetic resonance pulse sequences having wait times based on carrier speed
WO2018004658A1 (en) * 2016-07-01 2018-01-04 Halliburton Energy Services, Inc. Adjustable frequency processing of electromagnetic logging data
WO2018208296A1 (en) * 2017-05-09 2018-11-15 Halliburton Energy Services, Inc. Reservoir formation characterization from nmr t1/t2 ratio
WO2019135746A1 (en) 2018-01-03 2019-07-11 Halliburton Energy Services, Inc. Nuclear magnetic resonance sequence for partially polarized echo trains
WO2019139582A1 (en) 2018-01-10 2019-07-18 Halliburton Energy Services, Inc. Interspersing different wait times in trainlet and partial recovery sequences
CN111965719B (en) * 2020-07-21 2024-03-15 中海油田服务股份有限公司 Relaxation time measurement method and device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728892A (en) * 1985-08-13 1988-03-01 Shell Oil Company NMR imaging of materials
US6242913B1 (en) * 1996-12-30 2001-06-05 Numar Corporation Method for formation evaluation while drilling
US6392409B1 (en) * 2000-01-14 2002-05-21 Baker Hughes Incorporated Determination of T1 relaxation time from multiple wait time NMR logs acquired in the same or different logging passes

Family Cites Families (234)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1158959A (en) 1912-07-16 1915-11-02 Edward W Beach Centrifugal separator.
US2262655A (en) 1940-01-19 1941-11-11 Roy Q Seale Formation tester
US3395337A (en) 1952-01-03 1968-07-30 Varian Associates Apparatus and method for identifying substances
US2973471A (en) * 1953-05-08 1961-02-28 Texaco Development Corp Analysis techniques based on nuclear magnetic resonance
US3617867A (en) 1953-07-17 1971-11-02 Texaco Inc Method and apparatus for well logging utilizing resonance
NL194025A (en) * 1954-01-18
US3528000A (en) 1954-03-05 1970-09-08 Schlumberger Well Surv Corp Nuclear resonance well logging method and apparatus
DE1030940B (en) 1954-03-05 1958-05-29 Schlumberger Well Surveyring C Device for the investigation of earth formations, which are penetrated by a borehole, with the help of nuclear resonance
US3011554A (en) 1956-01-23 1961-12-05 Schlumberger Well Surv Corp Apparatus for investigating earth formations
US2912641A (en) 1956-07-27 1959-11-10 Texaco Development Corp Analysis techniques based on nuclear magnetic resonance
US3360716A (en) 1956-08-06 1967-12-26 Varian Associates Gyromagnetic resonance methods and apparatus
US3209588A (en) 1961-03-03 1965-10-05 Exxon Production Research Co Apparatus and method for logging boreholes with formation testing fluids
US3212574A (en) 1961-08-28 1965-10-19 Fred K Fox Well formation tester
US3205477A (en) 1961-12-29 1965-09-07 David C Kalbfell Electroacoustical logging while drilling wells
US3213357A (en) 1962-10-22 1965-10-19 California Research Corp Earth formation and fluid material investigation by nuclear magnetism relaxation rate determination
US3402344A (en) 1965-08-02 1968-09-17 Chevron Res Nuclear magnetism well logging method and apparatus
US3427532A (en) * 1966-02-14 1969-02-11 Varian Associates Nuclear magnetic resonance probe for spectrometers having an internal reference nuclei different than the nuclei under observation
US3452592A (en) 1966-12-01 1969-07-01 Schlumberger Technology Corp Methods and apparatus for determining effectiveness of sidewall engagement with well bore walls
US3453433A (en) 1966-12-08 1969-07-01 Schlumberger Technology Corp Combined sidewall neutron porosity gamma-gamma tool
US3508438A (en) * 1967-06-27 1970-04-28 Schlumberger Technology Corp Well logging apparatus and method
US3590228A (en) * 1967-10-02 1971-06-29 Schlumberger Technology Corp Methods and apparatus for processing well logging data
US3567936A (en) * 1968-02-07 1971-03-02 Schlumberger Technology Corp Multiple neutron detector borehole logging tool
US3567935A (en) * 1968-02-07 1971-03-02 Schlumberger Technology Corp Measuring apparatus and method
US3638484A (en) * 1968-11-05 1972-02-01 Schlumberger Technology Corp Methods of processing well logging data
US3577782A (en) * 1969-01-10 1971-05-04 Schlumberger Technology Corp Well logging tool for making multiple pressure tests and for bottom hole sampling
US3593116A (en) 1969-07-29 1971-07-13 Schlumberger Technology Corp Nuclear magnetic logging apparatus coil configuration
US3657730A (en) * 1970-01-14 1972-04-18 Shell Oil Co Method for determining residual hydrocarbons present in a subterranean earth formation
US3667035A (en) * 1970-03-17 1972-05-30 Texaco Development Corp Nuclear magnetism logging
FR2119862B1 (en) 1970-12-30 1973-11-23 Schlumberger Prospection
US3784898A (en) * 1972-02-16 1974-01-08 Shell Oil Co Method for reducing borehole signals in nuclear magnetic logging
US4310887A (en) * 1972-08-28 1982-01-12 Schlumberger Technology Corporation Verification and calibration of well logs and reconstruction of logs
US3896668A (en) 1973-10-05 1975-07-29 Schlumberger Technology Corp Methods and apparatus for determining characteristics of subsurface earth formations
US4210018A (en) 1978-05-22 1980-07-01 Gearhart-Owen Industries, Inc. Formation testers
US4479564A (en) 1979-04-12 1984-10-30 Schlumberger Technology Corporation System and method for monitoring drill string characteristics during drilling
US4292842A (en) 1979-05-25 1981-10-06 Gearhart Industries, Inc. Tool for testing earth formations in boreholes
GB2056082B (en) 1979-08-10 1983-07-06 Emi Ltd Nuclear magnetic logging
US4291271A (en) 1979-11-01 1981-09-22 Phillips Petroleum Company Method for determining pore size distribution and fluid distribution in porous media
US4339948A (en) 1980-04-25 1982-07-20 Gearhart Industries, Inc. Well formation test-treat-test apparatus and method
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
US4424487A (en) * 1981-06-02 1984-01-03 Phillips Petroleum Company Dispersion coefficient determination
US4536714A (en) 1982-04-16 1985-08-20 Schlumberger Technology Corporation Shields for antennas of borehole logging devices
USRE32913E (en) 1982-04-16 1989-04-25 Schlumberger Technology Corp. Shields for antennas of borehole logging devices
US4656422A (en) * 1982-06-10 1987-04-07 Paramagnetic Logging, Inc. Oil well logging tools measuring paramagnetic logging effect for use in open boreholes and cased well bores
US4528508A (en) 1982-06-10 1985-07-09 Paramagnetic Logging, Inc. Nuclear magnetic resonance method and apparatus for remote detection and volumetric measurement of petroleum reserves
US4470456A (en) 1983-02-22 1984-09-11 Moutray Iii Waldo W Borehole sampling tool
US4536711A (en) 1983-05-05 1985-08-20 Southwest Research Institute Method and apparatus for measuring flow in a pipe or conduit
GB8315866D0 (en) 1983-06-09 1983-07-13 Nat Res Dev Nuclear magnetic logging
US4629987A (en) 1983-09-08 1986-12-16 Southwest Research Institute Method and apparatus for nuclear magnetic resonant measurement of flow velocity
US4761889A (en) 1984-05-09 1988-08-09 Teleco Oilfield Services Inc. Method for the detection and correction of magnetic interference in the surveying of boreholes
US4638251A (en) * 1984-10-29 1987-01-20 Southwest Research Institute Method and apparatus for measuring flow of non-homogeneous material in incompletely filled flow channels
DE3504734C2 (en) 1985-02-12 1998-12-10 Max Planck Gesellschaft Method and device for recording spin resonance data
US4792757A (en) 1985-04-08 1988-12-20 Paramagnetic Logging, Inc. Oil well logging tools measuring paramagnetic logging effect for use in open boreholes and cased well bores
US4686364A (en) 1985-07-19 1987-08-11 Schlumberger Technology Corporation In situ determination of total carbon and evaluation of source rock therefrom
US4625547A (en) 1985-12-23 1986-12-02 Mobil Oil Corporation Borehole gravimetry logging
US4710713A (en) * 1986-03-11 1987-12-01 Numar Corporation Nuclear magnetic resonance sensing apparatus and techniques
US4700142A (en) 1986-04-04 1987-10-13 Vector Magnetics, Inc. Method for determining the location of a deep-well casing by magnetic field sensing
US4769602A (en) 1986-07-02 1988-09-06 Shell Oil Company Determining multiphase saturations by NMR imaging of multiple nuclides
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
US5055788A (en) * 1986-08-27 1991-10-08 Schlumberger Technology Corporation Borehole measurement of NMR characteristics of earth formations
US4933638A (en) 1986-08-27 1990-06-12 Schlumber Technology Corp. Borehole measurement of NMR characteristics of earth formations, and interpretations thereof
US4785245A (en) 1986-09-12 1988-11-15 Engineering Measurement Company Rapid pulse NMR cut meter
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
US4777464A (en) 1986-09-27 1988-10-11 Sumitomo Special Metal Co., Ltd. Magnetic field generating device for NMR-CT
US4742459A (en) * 1986-09-29 1988-05-03 Schlumber Technology Corp. Method and apparatus for determining hydraulic properties of formations surrounding a borehole
US4931760A (en) 1986-10-08 1990-06-05 Asahi Kasei Kogyo Kabushiki Kaisha Uniform magnetic field generator
US4783742A (en) 1986-12-31 1988-11-08 Sundstrand Data Control, Inc. Apparatus and method for gravity correction in borehole survey systems
US4875013A (en) 1987-03-13 1989-10-17 Hitachi, Ltd. High-frequency coil for nuclear magnetic imaging
US4890487A (en) * 1987-04-07 1990-01-02 Schlumberger Technology Corporation Method for determining horizontal and/or vertical permeability of a subsurface earth formation
EP0295134A2 (en) 1987-06-11 1988-12-14 Numar Corporation Nuclear magnetic resonance sensing apparatus and methods
US4825163A (en) * 1987-07-31 1989-04-25 Hitachi, Ltd. Quadrature probe for nuclear magnetic resonance
US4829252A (en) * 1987-10-28 1989-05-09 The Regents Of The University Of California MRI system with open access to patient image volume
US4899112A (en) * 1987-10-30 1990-02-06 Schlumberger Technology Corporation Well logging apparatus and method for determining formation resistivity at a shallow and a deep depth
US4949045A (en) 1987-10-30 1990-08-14 Schlumberger Technology Corporation Well logging apparatus having a cylindrical housing with antennas formed in recesses and covered with a waterproof rubber layer
US4987368A (en) * 1987-11-05 1991-01-22 Shell Oil Company Nuclear magnetism logging tool using high-temperature superconducting squid detectors
US4939648A (en) * 1987-12-02 1990-07-03 Schlumberger Technology Corporation Apparatus and method for monitoring well logging information
US4860581A (en) 1988-09-23 1989-08-29 Schlumberger Technology Corporation Down hole tool for determination of formation properties
US4936139A (en) 1988-09-23 1990-06-26 Schlumberger Technology Corporation Down hole method for determination of formation properties
US4885540A (en) 1988-10-31 1989-12-05 Amoco Corporation Automated nuclear magnetic resonance analysis
GB2228326B (en) 1988-12-03 1993-02-24 Anadrill Int Sa Method for determining the instantaneous rotation speed of a drill string
US5350925A (en) 1988-12-08 1994-09-27 Schlumberger Technology Corporation Methods for determining values for earth formation properties
US4933640A (en) 1988-12-30 1990-06-12 Vector Magnetics Apparatus for locating an elongated conductive body by electromagnetic measurement while drilling
US4956921A (en) 1989-02-21 1990-09-18 Anadrill, Inc. Method to improve directional survey accuracy
US4951749A (en) 1989-05-23 1990-08-28 Schlumberger Technology Corporation Earth formation sampling and testing method and apparatus with improved filter means
US4994777A (en) * 1989-11-14 1991-02-19 The United States Of America As Represented By The Secretary Of The Army Enhanced magnetic field within enclosed cylindrical cavity
US5053711A (en) * 1990-01-19 1991-10-01 General Electric Company Nmr radio frequency coil with improved axial field homogeneity
GB9003467D0 (en) 1990-02-15 1990-04-11 Oilphase Sampling Services Ltd Sampling tool
US5122746A (en) 1990-06-12 1992-06-16 Gas Research Institute Hydrocarbon gas measurements using nuclear magnetic resonance
US5056595A (en) 1990-08-13 1991-10-15 Gas Research Institute Wireline formation test tool with jet perforator for positively establishing fluidic communication with subsurface formation to be tested
US5299128A (en) * 1990-10-05 1994-03-29 Schlumberger Technology Corporation Method and apparatus for delineating bed boundaries in subsurface formations and for producing indications of the angle of dip thereof
US5212447A (en) 1990-12-03 1993-05-18 Numar Corporation Apparatus and technique for nmr diffusion measurement
WO1992010768A1 (en) * 1990-12-05 1992-06-25 Numar Corporation System for logging a well during the drilling thereof
US5138263A (en) 1991-01-16 1992-08-11 Teleco Oilfield Services Inc. Electromagnetic formation evaluation tool
US5233866A (en) 1991-04-22 1993-08-10 Gulf Research Institute Apparatus and method for accurately measuring formation pressures
US5557200A (en) * 1991-05-16 1996-09-17 Numar Corporation Nuclear magnetic resonance determination of petrophysical properties of geologic structures
US5412320A (en) * 1991-05-16 1995-05-02 Numar Corporation Nuclear magnetic resonance determination of petrophysical properties of geologic structures
US5309098A (en) * 1991-05-16 1994-05-03 Numar Corporation Nuclear magnetic resonance detection of geologic structures
US5265015A (en) 1991-06-27 1993-11-23 Schlumberger Technology Corporation Determining horizontal and/or vertical permeability of an earth formation
US5279153A (en) * 1991-08-30 1994-01-18 Schlumberger Technology Corporation Apparatus for determining horizontal and/or vertical permeability of an earth formation
US5329448A (en) 1991-08-07 1994-07-12 Schlumberger Technology Corporation Method and apparatus for determining horizontal conductivity and vertical conductivity of earth formations
US5269180A (en) 1991-09-17 1993-12-14 Schlumberger Technology Corp. Borehole tool, procedures, and interpretation for making permeability measurements of subsurface formations
US5387865A (en) * 1991-09-20 1995-02-07 Exxon Research And Engineering Company Permeability determination from NMR relaxation measurements for fluids in porous media
US5200699A (en) * 1991-09-25 1993-04-06 Phillips Petroleum Company Evaluation of liquid-containing samples using nuclear magnetic resonance
US5235285A (en) 1991-10-31 1993-08-10 Schlumberger Technology Corporation Well logging apparatus having toroidal induction antenna for measuring, while drilling, resistivity of earth formations
US5389877A (en) * 1991-11-27 1995-02-14 Schlumberger Technology Corporation Nuclear magnetic resonance pulse sequences for determining bound fluid volume
US5379216A (en) * 1992-05-27 1995-01-03 Schlumberger Technology Corporation Method and apparatus for producing a new output record medium illustrating a quantitative description in the volume dimension of mud filtrate invasion into permeable zones of a formation in a wellbore
US5923167A (en) 1992-07-30 1999-07-13 Schlumberger Technology Corporation Pulsed nuclear magnetism tool for formation evaluation while drilling
DK0581666T3 (en) 1992-07-30 1997-10-27 Schlumberger Ltd Pulse-modulated nuclear magnetic tool for formation evaluation during drilling
US5705927A (en) * 1992-07-30 1998-01-06 Schlumberger Technology Corporation Pulsed nuclear magnetism tool for formation evaluation while drilling including a shortened or truncated CPMG sequence
US5629623A (en) * 1992-07-30 1997-05-13 Schlumberger Technology Corporation Pulsed nuclear magnetism tool for formation evaluation while drilling
US5453692A (en) 1992-08-06 1995-09-26 Hitachi, Ltd. RF probe for nuclear magnetic resonance imaging (MRI) devices
DE4234544C2 (en) * 1992-10-14 1996-09-05 Bruker Analytische Messtechnik Directly coupled sample changing system for liquid NMR spectroscopy and method for its operation
US5293931A (en) * 1992-10-26 1994-03-15 Nichols Ralph L Modular, multi-level groundwater sampler
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
US5432446A (en) 1992-11-02 1995-07-11 Schlumberger Technology Corporation Borehole measurement of NMR characteristics of earth formation
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
US5365171A (en) 1992-11-30 1994-11-15 The United States Of America As Represented By The Secretary Of The Navy Removing the effects of acoustic ringing and reducing temperature effects in the detection of explosives by NQR
US5363041A (en) 1992-12-31 1994-11-08 Schlumberger Technology Corporation Determining bound and unbound fluid volumes using nuclear magnetic resonance pulse sequences
US5596274A (en) * 1992-12-31 1997-01-21 Schlumberger Technology Corporation Determining bound and unbound fluid volumes using nuclear magnetic resonance pulse sequences
US5349184A (en) 1993-01-21 1994-09-20 Schlumberger Technology Corporation Method and apparatus for reducing matrix density effects on porosity measurements during epithermal neutron porosity well logging
US5329811A (en) 1993-02-04 1994-07-19 Halliburton Company Downhole fluid property measurement tool
EP0689722A1 (en) 1993-03-08 1996-01-03 International Business Machines Corporation Method and apparatus for doping a solid material
US5376884A (en) * 1993-04-01 1994-12-27 Schlumberger Technology Corporation Nuclear magnetic resonance measuring apparatus
GB2276945B (en) * 1993-04-08 1997-02-26 Oxford Magnet Tech Improvements in or relating to MRI magnets
US5417104A (en) * 1993-05-28 1995-05-23 Gas Research Institute Determination of permeability of porous media by streaming potential and electro-osmotic coefficients
US5517115A (en) * 1993-12-16 1996-05-14 Numar Corporation Efficient processing of NMR echo trains
JP3150248B2 (en) 1993-12-27 2001-03-26 住友特殊金属株式会社 Magnetic field generator for MRI
US5602334A (en) * 1994-06-17 1997-02-11 Halliburton Company Wireline formation testing for low permeability formations utilizing pressure transients
US5498960A (en) * 1994-10-20 1996-03-12 Shell Oil Company NMR logging of natural gas in reservoirs
US5497087A (en) * 1994-10-20 1996-03-05 Shell Oil Company NMR logging of natural gas reservoirs
GB2295672B (en) 1994-11-29 1999-05-12 Oxford Magnet Tech Improvements in or relating to cryogenic MRI magnets
US5757191A (en) * 1994-12-09 1998-05-26 Halliburton Energy Services, Inc. Virtual induction sonde for steering transmitted and received signals
US5536938A (en) 1995-02-22 1996-07-16 Mobil Oil Corporation Pulsed neutron decay logging
US5680043A (en) 1995-03-23 1997-10-21 Schlumberger Technology Corporation Nuclear magnetic resonance technique for determining gas effect with borehole logging tools
AU711508B2 (en) 1995-03-23 1999-10-14 Schlumberger Technology B.V. Nuclear magnetic resonance borehole logging apparatus and method
JP3472642B2 (en) 1995-03-31 2003-12-02 ジーイー横河メディカルシステム株式会社 Magnet assembly for MRI equipment
US5565775A (en) 1995-06-23 1996-10-15 Exxon Research And Engineering Company Producible fluid volumes in porous media determined by pulsed field gradient nuclear magnetic resonance
US5696448A (en) * 1995-06-26 1997-12-09 Numar Corporation NMR system and method for formation evaluation using diffusion and relaxation log measurements
US5936405A (en) * 1995-09-25 1999-08-10 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
US6242912B1 (en) * 1995-10-12 2001-06-05 Numar Corporation System and method for lithology-independent gas detection using multifrequency gradient NMR logging
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
US5574417A (en) 1995-10-23 1996-11-12 General Electric Company Open MRI magnet with homogeneous imaging volume
US5675147A (en) 1996-01-22 1997-10-07 Schlumberger Technology Corporation System and method of petrophysical formation evaluation in heterogeneous formations
US5828214A (en) 1996-02-23 1998-10-27 Western Atlas International, Inc. Method and apparatus for resistivity determination by nuclear magnetic resonance measurement
US5712566A (en) 1996-02-23 1998-01-27 Western Atlas International, Inc. Nuclear magnetic resonance apparatus and method
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
US5644231A (en) 1996-03-04 1997-07-01 Schlumberger Technology Corporation High pressure magnetic antenna assembly
US5672819A (en) 1996-03-13 1997-09-30 Halliburton Energy Services, Inc. Formation evaluation using phase shift periodic pressure pulse testing
US5644076A (en) 1996-03-14 1997-07-01 Halliburton Energy Services, Inc. Wireline formation tester supercharge correction method
US6005389A (en) * 1996-03-15 1999-12-21 Numar Corporation Pulse sequences and interpretation techniques for NMR measurements
US5741962A (en) * 1996-04-05 1998-04-21 Halliburton Energy Services, Inc. Apparatus and method for analyzing a retrieving formation fluid utilizing acoustic measurements
US5767674A (en) 1996-04-17 1998-06-16 Griffin; Douglas D. Apparatus for protecting a magnetic resonance antenna
US6023163A (en) * 1996-06-14 2000-02-08 Schlumberger Technology Corporation Well logging method and apparatus for determining gas and diffusion coefficient using NMR
US5934374A (en) 1996-08-01 1999-08-10 Halliburton Energy Services, Inc. Formation tester with improved sample collection system
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
DE19648688B4 (en) * 1996-11-25 2006-11-09 Robert Bosch Gmbh Method for recording the fill level of a tank system
US6531868B2 (en) * 1996-12-30 2003-03-11 Halliburton Energy Services, Inc. System and methods for formation evaluation while drilling
US5826662A (en) 1997-02-03 1998-10-27 Halliburton Energy Services, Inc. Apparatus for testing and sampling open-hole oil and gas wells
US6204663B1 (en) * 1997-03-26 2001-03-20 Numar Corporation Pulse sequence and method for suppression of magneto-acoustic artifacts in NMR data
US6121773A (en) 1997-03-27 2000-09-19 Western Atlas International, Inc. Longitudinal NMR well logging apparatus and method
US5959453A (en) 1997-10-29 1999-09-28 Western Atlas International, Inc. Radial NMR well logging apparatus and method
GB2325981B (en) 1997-04-21 2002-04-10 Baker Hughes Inc Nuclear magnetic resonance apparatus and method for geological applications
US6018243A (en) * 1997-10-29 2000-01-25 Western Atlas International, Inc. NMR well logging apparatus and method
US6766854B2 (en) 1997-06-02 2004-07-27 Schlumberger Technology Corporation Well-bore sensor apparatus and method
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
US6268727B1 (en) * 1997-06-24 2001-07-31 Southwest Research Institute Measurement of flow fractions flow velocities and flow rates of a multiphase fluid using ESR sensing
AU8164898A (en) * 1997-06-27 1999-01-19 Baker Hughes Incorporated Drilling system with sensors for determining properties of drilling fluid downhole
US6065355A (en) * 1997-09-23 2000-05-23 Halliburton Energy Services, Inc. Non-flashing downhole fluid sampler and method
US6166543A (en) 1997-09-25 2000-12-26 Schlumberger Technology Corporation Method and apparatus for measuring nuclear magnetic resonance
US5992519A (en) 1997-09-29 1999-11-30 Schlumberger Technology Corporation Real time monitoring and control of downhole reservoirs
US6049205A (en) * 1997-10-01 2000-04-11 Western Atlas International, Inc. Multiple frequency method for nuclear magnetic resonance longitudinal relaxation measurement and pulsing sequence for power use optimization
US6173793B1 (en) * 1998-12-18 2001-01-16 Baker Hughes Incorporated Measurement-while-drilling devices with pad mounted sensors
US6111408A (en) * 1997-12-23 2000-08-29 Numar Corporation Nuclear magnetic resonance sensing apparatus and techniques for downhole measurements
US6163154A (en) 1997-12-23 2000-12-19 Magnetic Diagnostics, Inc. Small scale NMR spectroscopic apparatus and method
US6133734A (en) 1997-12-30 2000-10-17 Schlumberger Technology Corporation Method and apparatus for evaluating an earth formation using nuclear magnetic resonance techiques
US5869755A (en) * 1997-12-31 1999-02-09 Schlumberger Technology Corporation Porosity estimation method in carbonate rock
EP1057047B1 (en) * 1998-01-16 2008-08-06 Halliburton Energy Services, Inc. Method and apparatus for nuclear magnetic resonance measuring while drilling
US6327538B1 (en) 1998-02-17 2001-12-04 Halliburton Energy Services, Inc Method and apparatus for evaluating stoneley waves, and for determining formation parameters in response thereto
US6023164A (en) * 1998-02-20 2000-02-08 Numar Corporation Eccentric NMR well logging apparatus and method
US6237404B1 (en) * 1998-02-27 2001-05-29 Schlumberger Technology Corporation Apparatus and method for determining a drilling mode to optimize formation evaluation measurements
US6111409A (en) 1998-03-02 2000-08-29 Western Atlas International, Inc. Nuclear magnetic reasonance fluid characterization apparatus and method for using with electric wireline formation testing instruments
US6246236B1 (en) 1998-03-03 2001-06-12 Schlumberger Technology Corporation Apparatus and method for obtaining a nuclear magnetic resonance measurement while drilling
US6140817A (en) 1998-05-26 2000-10-31 Schlumberger Technology Corporation Magnetic resonance well logging method and apparatus
US6232778B1 (en) * 1998-06-11 2001-05-15 Schlumberger Technology Corporation Method for obtaining NMR bound fluid volume using partial polarization
US6121774A (en) 1998-06-22 2000-09-19 Schlumberger Technology Corporation Method for eliminating ringing during a nuclear magnetic resonance measurement
US6492809B1 (en) 1998-12-04 2002-12-10 Schlumberger Technology Corporation Preconditioning spins near a nuclear magnetic resonance region
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
GB2341448B (en) 1998-09-11 2003-08-20 Oxford Magnet Tech Magnetic field control systems
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
US6301959B1 (en) 1999-01-26 2001-10-16 Halliburton Energy Services, Inc. Focused formation fluid sampling probe
US6115671A (en) 1999-02-03 2000-09-05 Schlumberger Technology Corporation Method for estimating rock petrophysical parameters using temperature modified NMR data
US6563314B1 (en) * 1999-02-10 2003-05-13 Schlumberger Technology Corporation Well logging method and apparatus for determining the nuclear magnetic resonance longitudinal magnetization decay of formations
US6114851A (en) * 1999-02-12 2000-09-05 Baker Hughes Incorporated Temperature compensated nuclear magnetic resonance apparatus and method
US6274865B1 (en) 1999-02-23 2001-08-14 Schlumberger Technology Corporation Analysis of downhole OBM-contaminated formation fluid
US6688390B2 (en) 1999-03-25 2004-02-10 Schlumberger Technology Corporation Formation fluid sampling apparatus and method
US6216782B1 (en) 1999-05-18 2001-04-17 Halliburton Energy Services, Inc. Apparatus and method for verification of monophasic samples
US6297632B1 (en) 1999-07-19 2001-10-02 Schlumberger Technology Corporation Detecting tool motion effects on spin echoes obtained with nuclear magnetic resonance measurements
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
US6253155B1 (en) 1999-11-12 2001-06-26 Halliburton Energy Services, Inc. Enhanced vertical resolution for logging tools using walsh-transform deconvolution
US6252405B1 (en) 1999-11-15 2001-06-26 General Electric Company Temperature compensated NMR magnet and method of operation therefor
US6541969B2 (en) * 1999-12-15 2003-04-01 Halliburton Energy Services, Inc. Method and apparatus for improving the vertical resolution of NMR logs
US6646437B1 (en) 2000-04-07 2003-11-11 Halliburton Energy Services, Inc. System and method for clay typing using NMR-based porosity modeling
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
US7135862B2 (en) 2001-03-13 2006-11-14 Halliburton Energy Services, Inc NMR logging using time-domain averaging
US6737864B2 (en) * 2001-03-28 2004-05-18 Halliburton Energy Services, Inc. Magnetic resonance fluid analysis apparatus and method
US6586931B2 (en) 2001-04-20 2003-07-01 Baker Hughes Incorporated NMR logging in the earth's magnetic field
US6559640B2 (en) * 2001-05-22 2003-05-06 Baker Hughes Incorporated NMR apparatus and method utilizing pulsed static magnetic fields
US6518756B1 (en) * 2001-06-14 2003-02-11 Halliburton Energy Services, Inc. Systems and methods for determining motion tool parameters in borehole logging
US6525534B2 (en) * 2001-06-15 2003-02-25 Halliburton Energy Services, Inc. System and methods for NMR signal processing without phase alternated pair stacking
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
US7246664B2 (en) * 2001-09-19 2007-07-24 Baker Hughes Incorporated Dual piston, single phase sampling mechanism and procedure
AU2002341788B2 (en) 2001-09-19 2008-01-10 Halliburton Energy Services, Inc. Method and system for using conventional core data to calibrate bound water volumes derived from NMR logs
US7059179B2 (en) * 2001-09-28 2006-06-13 Halliburton Energy Services, Inc. Multi-probe pressure transient analysis for determination of horizontal permeability, anisotropy and skin in an earth formation
US6729399B2 (en) * 2001-11-26 2004-05-04 Schlumberger Technology Corporation Method and apparatus for determining reservoir characteristics
US6859032B2 (en) * 2001-12-18 2005-02-22 Schlumberger Technology Corporation Method for determining molecular properties of hydrocarbon mixtures from NMR data
US6838875B2 (en) * 2002-05-10 2005-01-04 Schlumberger Technology Corporation Processing NMR data in the presence of coherent ringing
US6748328B2 (en) 2002-06-10 2004-06-08 Halliburton Energy Services, Inc. Determining fluid composition from fluid properties
US7191672B2 (en) * 2002-08-27 2007-03-20 Halliburton Energy Services, Inc. Single phase sampling apparatus and method
US7463027B2 (en) 2003-05-02 2008-12-09 Halliburton Energy Services, Inc. Systems and methods for deep-looking NMR logging
WO2004109334A2 (en) * 2003-05-30 2004-12-16 Halliburton Energy Services, Inc. Systems and methods for analyzing carbonate formations while drilling
US7199580B2 (en) * 2003-10-03 2007-04-03 Halliburton Energy Services, Inc. System and methods for T1-based logging
US7091719B2 (en) * 2004-04-30 2006-08-15 Schlumberger Technology Corporation Method for determining properties of formation fluids
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
US7511487B2 (en) * 2007-02-27 2009-03-31 Schlumberger Technology Corporation Logging method for determining characteristic of fluid in a downhole measurement region
US7500539B1 (en) * 2007-08-30 2009-03-10 Baker Hughes Incorporated Method and apparatus of using crossed magnetic fields for measuring conductivity, permeability and porosity

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728892A (en) * 1985-08-13 1988-03-01 Shell Oil Company NMR imaging of materials
US6242913B1 (en) * 1996-12-30 2001-06-05 Numar Corporation Method for formation evaluation while drilling
US6392409B1 (en) * 2000-01-14 2002-05-21 Baker Hughes Incorporated Determination of T1 relaxation time from multiple wait time NMR logs acquired in the same or different logging passes

Also Published As

Publication number Publication date
CA2852097A1 (en) 2005-04-21
AR046271A1 (en) 2005-11-30
WO2005036208A2 (en) 2005-04-21
CA2540791A1 (en) 2005-04-21
US20090093962A1 (en) 2009-04-09
CA2540791C (en) 2013-12-10
US7199580B2 (en) 2007-04-03
US20070241750A1 (en) 2007-10-18
BRPI0414998A (en) 2006-11-21
US7501818B2 (en) 2009-03-10
GB2422201A (en) 2006-07-19
US20050104587A1 (en) 2005-05-19
EG24372A (en) 2009-03-16
GB0606829D0 (en) 2006-05-17
US7755354B2 (en) 2010-07-13
GB2422201B (en) 2007-06-06
CA2828175A1 (en) 2005-04-21
MXPA06003671A (en) 2006-06-20

Similar Documents

Publication Publication Date Title
WO2005036208A3 (en) System and methods for t1-based logging
WO2005036338A3 (en) System and methods for upscaling petrophysical data
CA2465475A1 (en) Adjustment for frequency dispersion effects in electromagnetic logging data
CA2452210A1 (en) Nmr data acquisition with multiple interecho spacing
CA2435951A1 (en) Method for detecting hydrocarbons by comparing nmr response at different depths of investigation
WO2007098204A8 (en) Compensation of magnetic influence in a mwd system
AU2003274261A1 (en) Method of measuring rock wettability by means of nuclear magnetic resonance
WO2005109038A3 (en) Reduction of motion artifacts in nmr
DE60035143D1 (en) Fast spin-echo MRI method without using the CPMG techniques
EP1486794A3 (en) Method and apparatus for the detection and/or analysis of compounds simultaneously exhibiting nuclear quadrupolar resonance and nuclear magnetic resonance
CA2505293A1 (en) Method and apparatus for using pulsed field gradient nmr measurements to determine fluid properties in a fluid sampling well logging tool
WO2004109300A3 (en) Methods for magnetic resonance signal perturbations measurement
CA2288447A1 (en) Formation evaluation using magnetic resonance logging measurements
WO2006023346A8 (en) Correction of nmr artifacts due to constant-velocity axial motion and spin-lattice relaxation
WO2002086478A3 (en) Methods for analysis of spectral data and their applications
CA2434132A1 (en) Method for magnetic resonance fluid characterization
CA2627861A1 (en) Method for phase and amplitude correction in controlled source electromagnetic survey data
DE60319475D1 (en) Parallel magnetic resonance imaging using navigator echo signals
CA2427420A1 (en) Method for the inversion of cpmg measurements enhanced by often repeated short wait time measurements
WO2002049221A3 (en) Method and apparatus for a waveform quality measurement_____
WO2010039914A3 (en) Data acquisition and processing for invasion profile and gas zone analysis with nmr dual or multiple interecho spacing time logs
CA2298457A1 (en) Nuclear magnetic resonance well logging method and apparatus
CA2366156A1 (en) Nuclear magnetic resonance method and apparatus for determining pore characteristics of rocks and other porous materials
CA2454666A1 (en) Multi-measurement nmr analysis based on maximum entropy
WO2003023447A3 (en) A nonlinear constrained inversion method to determine base of salt interface from gravity and gravity tensor data

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2540791

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: PA/a/2006/003671

Country of ref document: MX

WWE Wipo information: entry into national phase

Ref document number: 0606829.0

Country of ref document: GB

Ref document number: 0606829

Country of ref document: GB

122 Ep: pct application non-entry in european phase
ENP Entry into the national phase

Ref document number: PI0414998

Country of ref document: BR