WO2007098204A8 - Compensation of magnetic influence in a mwd system - Google Patents

Compensation of magnetic influence in a mwd system

Info

Publication number
WO2007098204A8
WO2007098204A8 PCT/US2007/004516 US2007004516W WO2007098204A8 WO 2007098204 A8 WO2007098204 A8 WO 2007098204A8 US 2007004516 W US2007004516 W US 2007004516W WO 2007098204 A8 WO2007098204 A8 WO 2007098204A8
Authority
WO
WIPO (PCT)
Prior art keywords
magnets
sensor
compensation
magnetic influence
mwd system
Prior art date
Application number
PCT/US2007/004516
Other languages
French (fr)
Other versions
WO2007098204A1 (en
Inventor
Thomas Kruspe
Volker Krueger
Martin Blanz
Roland E Chemali
Original Assignee
Baker Hughes Inc
Thomas Kruspe
Volker Krueger
Martin Blanz
Roland E Chemali
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 Baker Hughes Inc, Thomas Kruspe, Volker Krueger, Martin Blanz, Roland E Chemali filed Critical Baker Hughes Inc
Priority to GB0815418A priority Critical patent/GB2449032B/en
Publication of WO2007098204A1 publication Critical patent/WO2007098204A1/en
Publication of WO2007098204A8 publication Critical patent/WO2007098204A8/en
Priority to NO20083587A priority patent/NO341650B1/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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/02—Determining slope or direction
    • E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
    • 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
    • G01R33/24—Arrangements or instruments for measuring magnetic variables involving magnetic resonance for measuring direction or magnitude of magnetic fields or magnetic flux
    • 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
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/383—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using permanent magnets
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • 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
    • G01R33/387—Compensation of inhomogeneities
    • G01R33/3873—Compensation of inhomogeneities using ferromagnetic bodies ; Passive shimming
    • 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
    • G01R33/42—Screening
    • G01R33/421—Screening of main or gradient magnetic field
    • 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
    • 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
    • G01R33/4808—Multimodal MR, e.g. MR combined with positron emission tomography [PET], MR combined with ultrasound or MR combined with computed tomography [CT]

Abstract

The present disclosure provides a downhole tool that includes a magnetometer and a nuclear magnetic resonance (NMR) sensor. One or more compensating magnets are provided on the tool to cancel or offset the effect of the magnetic field of the magnets of the NMR sensor on the magnetometer measurements made during drilling of a wellbore. The compensating magnets may have the same magnetic field characteristics as the sensor magnets and may be made of the same material.
PCT/US2007/004516 2006-02-17 2007-02-16 Compensation of magnetic influence in a mwd system WO2007098204A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0815418A GB2449032B (en) 2006-02-17 2007-02-16 Compensation of magnetic influence in a mwd system
NO20083587A NO341650B1 (en) 2006-02-17 2008-08-19 Apparatus and method for correcting an effect of a source of magnetic disturbance on a wellbore unit conveyed in a borehole in a base formation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US77469906P 2006-02-17 2006-02-17
US60/774,699 2006-02-17

Publications (2)

Publication Number Publication Date
WO2007098204A1 WO2007098204A1 (en) 2007-08-30
WO2007098204A8 true WO2007098204A8 (en) 2007-12-27

Family

ID=38230171

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/004516 WO2007098204A1 (en) 2006-02-17 2007-02-16 Compensation of magnetic influence in a mwd system

Country Status (4)

Country Link
US (1) US7405563B2 (en)
GB (1) GB2449032B (en)
NO (1) NO341650B1 (en)
WO (1) WO2007098204A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7913756B2 (en) * 2004-12-13 2011-03-29 Baker Hughes Incorporated Method and apparatus for demagnetizing a borehole
US7969150B2 (en) * 2004-12-13 2011-06-28 Baker Hughes Incorporated Demagnetizer to eliminate residual magnetization of wellbore wall produced by nuclear magnetic resonance logs
US20090121711A1 (en) * 2007-08-01 2009-05-14 Baker Hughes Incorporated Thermally stabilized magnets for use downhole
US9038746B2 (en) * 2008-04-07 2015-05-26 Schlumberger Technology Corporation Method for determining wellbore position using seismic sources and seismic receivers
US10227862B2 (en) 2008-04-07 2019-03-12 Schlumberger Technology Corporation Method for determining wellbore position using seismic sources and seismic receivers
AU2008360702B2 (en) * 2008-08-21 2012-03-08 Halliburton Energy Services, Inc. Automated log quality monitoring systems and methods
US8373412B2 (en) * 2009-01-23 2013-02-12 Baker Hughes Incorporated NMR-LWD imaging tool
US8324895B2 (en) * 2009-01-23 2012-12-04 Baker Hughes Incorporated MWD/LWD NMR imaging with long echo trains
US10041343B2 (en) 2009-06-02 2018-08-07 Halliburton Energy Services, Inc. Micro-sonic density imaging while drilling systems and methods
WO2011038170A2 (en) 2009-09-26 2011-03-31 Halliburton Energy Services, Inc. Downhole optical imaging tools and methods
US20110203805A1 (en) * 2010-02-23 2011-08-25 Baker Hughes Incorporated Valving Device and Method of Valving
JP6018185B2 (en) 2011-05-31 2016-11-02 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． Static magnetic field correction of MRI radiation therapy equipment
US9316758B2 (en) 2013-05-29 2016-04-19 Liquid Robotics Oil and Gas LLC Earth surveying for improved drilling applications
US11143014B2 (en) 2014-05-19 2021-10-12 Halliburton Energy Services, Inc. Nuclear magnetic resonance sensors embedded in cement
RU2671016C2 (en) * 2014-06-17 2018-10-29 Халлибертон Энерджи Сервисез, Инк. Magnetic resistance sensor for detecting magnetic structure in underground environment
CA3046921C (en) * 2017-03-09 2021-02-16 Halliburton Energy Services, Inc. Downhole nuclear magnetic resonance tool with active compensation for motional effects
CN109521384A (en) * 2017-09-19 2019-03-26 北京自动化控制设备研究所 A kind of vector magnetic compensation method based on atom magnetometer
US20200131898A1 (en) * 2018-10-24 2020-04-30 Bench Tree Group, Llc System and method for determining axial magnetic interference in downhole directional sensors
US11287545B2 (en) * 2019-12-26 2022-03-29 Baker Hughes Oilfield Operations Llc Magnetic freepoint indicator tool
US11372128B2 (en) 2020-05-14 2022-06-28 China Petroleum & Chemical Corporation Method and system for detecting downhole magnetic interference on measurement while drilling operations
US11519264B1 (en) 2021-11-12 2022-12-06 China Petroleum & Chemical Corporation Method for obtaining gravity coefficients for orthogonally oriented accelerometer devices during measurement-while-drilling operations

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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
GB9022145D0 (en) * 1990-10-11 1990-11-21 Oxford Instr Ltd Magnetic field generating assembly
GB2252623B (en) 1991-01-15 1994-10-19 Teleco Oilfield Services Inc A method for analyzing formation data from a formation evaluation measurement while drilling logging tool
US5432445A (en) * 1992-07-24 1995-07-11 Dinsmore Instrument Company Mirror image differential induction amplitude magnetometer
EP0581666B1 (en) * 1992-07-30 1997-10-01 Schlumberger Limited Pulsed nuclear magnetism tool for formation evaluation while drilling
GB9302837D0 (en) * 1993-02-12 1993-03-31 Oxford Instr Uk Ltd Magnet assembly
US5473158A (en) 1994-01-14 1995-12-05 Schlumberger Technology Corporation Logging while drilling method and apparatus for measuring formation characteristics as a function of angular position within a borehole
GB9412012D0 (en) * 1994-06-15 1994-08-03 Oxford Instr Uk Ltd Magnet assembly
US5623407A (en) 1995-06-07 1997-04-22 Baker Hughes Incorporated Method of correcting axial and transverse error components in magnetometer readings during wellbore survey operations
US5814988A (en) * 1997-01-29 1998-09-29 Western Atlas International, Inc. Combination nuclear magnetic resonance and electromagnetic induction resistivity well logging instrument and method
US6047237A (en) * 1997-12-10 2000-04-04 Prince Corporation Compass precalibration method
US6163154A (en) * 1997-12-23 2000-12-19 Magnetic Diagnostics, Inc. Small scale NMR spectroscopic apparatus and method
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
US6326785B1 (en) * 2000-07-18 2001-12-04 Baker Hughes, Inc. Nuclear magnetic resonance tool with magnetostrictive noise compensation
US7126332B2 (en) * 2001-07-20 2006-10-24 Baker Hughes Incorporated Downhole high resolution NMR spectroscopy with polarization enhancement
US6966211B2 (en) 2003-02-04 2005-11-22 Precision Drilling Technology Services Group Inc. Downhole calibration system for directional sensors
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

Also Published As

Publication number Publication date
NO341650B1 (en) 2017-12-18
US7405563B2 (en) 2008-07-29
NO20083587L (en) 2008-10-28
WO2007098204A1 (en) 2007-08-30
GB2449032B (en) 2009-12-23
GB0815418D0 (en) 2008-10-01
GB2449032A (en) 2008-11-05
US20070206555A1 (en) 2007-09-06

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