CA2437850A1 - High vertical resolution antennas for nmr logging - Google Patents

High vertical resolution antennas for nmr logging Download PDF

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Publication number
CA2437850A1
CA2437850A1 CA002437850A CA2437850A CA2437850A1 CA 2437850 A1 CA2437850 A1 CA 2437850A1 CA 002437850 A CA002437850 A CA 002437850A CA 2437850 A CA2437850 A CA 2437850A CA 2437850 A1 CA2437850 A1 CA 2437850A1
Authority
CA
Canada
Prior art keywords
coil
primary coil
secondary coil
vertical resolution
high vertical
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
CA002437850A
Other languages
French (fr)
Other versions
CA2437850C (en
Inventor
Reza Taherian
Abdurrahman Sezginer
Boqin Sun
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 CA2437850A1 publication Critical patent/CA2437850A1/en
Application granted granted Critical
Publication of CA2437850C publication Critical patent/CA2437850C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • 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

A high vertical resolution antenna design is provided for use in an NMR
measurement apparatus. Multiple coils are situated along the length of a magnet. A
primary coil is energized to cause an oscillating magnetic field in a portion of earth formation surrounding a borehole. A secondary coil having smaller dimensions than the primary coil is operated to receive spin echoes from a depth of investigation associated with the secondary coil. A distance sufficient to minimize electrical coupling separates the coils. The separation distance can be reduced by selecting a secondary coil with orthogonal polarization to the primary coil. Alternatively, a cross coil configuration can be implemented where the orthogonal secondary coil at least partially overlaps the primary coil, thereby reducing the overall length necessary for the polarizing magnet.
CA002437850A 2002-09-06 2003-08-20 High vertical resolution antennas for nmr logging Expired - Fee Related CA2437850C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/064,994 2002-09-06
US10/064,994 US6781371B2 (en) 2002-09-06 2002-09-06 High vertical resolution antennas for NMR logging

Publications (2)

Publication Number Publication Date
CA2437850A1 true CA2437850A1 (en) 2004-03-06
CA2437850C CA2437850C (en) 2006-08-01

Family

ID=27803635

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002437850A Expired - Fee Related CA2437850C (en) 2002-09-06 2003-08-20 High vertical resolution antennas for nmr logging

Country Status (3)

Country Link
US (1) US6781371B2 (en)
CA (1) CA2437850C (en)
GB (1) GB2396017B (en)

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US7804297B2 (en) * 2008-01-30 2010-09-28 Baker Hughes Incorporated Methodology for interpretation and analysis of NMR distributions
US8330460B2 (en) * 2008-01-30 2012-12-11 Baker Hughes Incorporated Method and apparatus for determining multiscale similarity between NMR measurements and a reference well log
RU2383884C1 (en) * 2008-12-12 2010-03-10 Государственное Образовательное Учреждение Высшего Профессионального Образования "Казанский Государственный Университет Им. В.И.Ульянова-Ленина" Method of determining content of liquid-phase and solid-state components in hydrocarbon mixture
US8866692B2 (en) * 2008-12-19 2014-10-21 Apple Inc. Electronic device with isolated antennas
AU2010230843B2 (en) * 2009-03-31 2015-04-30 The University Of Queensland Coil arrangement
GB2493814B (en) * 2010-06-16 2016-06-15 Halliburton Energy Services Inc Nuclear magnetic resonance logging tool having antennas cells and a method of logging nuclear magnetic resonance
CN103472489B (en) * 2013-09-18 2016-04-13 安徽惠洲地质安全研究院股份有限公司 The antithesis emitter of transient electromagnetic
US9632204B2 (en) 2013-11-13 2017-04-25 Halliburton Energy Services, Inc. Dual antenna for circular polarization
MX364525B (en) 2013-12-13 2019-04-30 Halliburton Energy Services Inc Switching an operating mode of an nmr logging tool.
EP3092683A4 (en) * 2014-01-09 2017-09-27 MiniPumps, LLC Telemetry arrangements for implantable devices
MX2016013317A (en) 2014-05-06 2017-01-18 Halliburton Energy Services Inc Front tangential antenna for nuclear magnetic resonance (nmr) well logging.
WO2016022713A1 (en) * 2014-08-05 2016-02-11 Purvis Rick Telemetry arrangements for implantable devices
GB2545861B (en) * 2014-12-30 2021-04-07 Halliburton Energy Services Inc Combined NMR-resistivity measurement apparatus, systems, and methods
US10082594B2 (en) 2015-04-07 2018-09-25 Baker Hughes, A Ge Company, Llc Magnet arrays for magnetic resonance measurements
US10261211B2 (en) 2015-11-05 2019-04-16 Halliburton Energy Services, Inc. Nuclear magnetic resonance logging tool with quadrature coil configuration
US10145976B2 (en) 2016-05-27 2018-12-04 Baker Hughes, A Ge Company, Llc Arrays of receive antennas for magnetic resonance measurements
EP3478933B1 (en) * 2016-09-20 2023-08-16 Halliburton Energy Services, Inc. Nmr antenna arrangement for fast moving nmr logging tool
US10802176B2 (en) 2017-02-14 2020-10-13 Baker Hughes, A Ge Company, Llc Methods and devices for magnetic resonance measurements using decoupled transmit antennas
US10478087B2 (en) * 2017-02-16 2019-11-19 Aselsan Elektronik Sanayi Ve Ticaret A.S. Open bore field free line magnetic particle imaging system
CA3046921C (en) 2017-03-09 2021-02-16 Halliburton Energy Services, Inc. Downhole nuclear magnetic resonance tool with active compensation for motional effects
EP3850404A4 (en) * 2018-09-11 2022-05-18 Services Pétroliers Schlumberger Techniques for nmr logging with antenna arrays
NO20211061A1 (en) 2019-04-05 2021-09-03 Halliburton Energy Services Inc Circular polarization correction in nuclear magnetic resonsance (NMR) logging
NO20211062A1 (en) 2019-04-05 2021-09-03 Halliburton Energy Services Inc Reverse circular polarization based antenna orientation
CN113216948B (en) * 2021-05-19 2023-03-24 中国石油大学(北京) Multi-coil-structure while-drilling nuclear magnetic resonance logging device and method

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US4794792A (en) * 1986-10-06 1989-01-03 Schlumberger Technology Corporation Method for determining formation characteristics with enhanced vertical resolution
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US6166543A (en) 1997-09-25 2000-12-26 Schlumberger Technology Corporation Method and apparatus for measuring nuclear magnetic resonance
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US6522138B2 (en) 2000-03-31 2003-02-18 Schlumberger Technology Corporation Resolution enhancement for sequential phase alternated pair nuclear magnetic resonance measurements
US6459262B1 (en) * 2000-04-25 2002-10-01 Baker Hughes Incorporated Toroidal receiver for NMR MWD
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US6522137B1 (en) 2000-06-28 2003-02-18 Schlumberger Technology Corporation Two-dimensional magnetic resonance imaging in a borehole
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US6525535B2 (en) 2000-10-02 2003-02-25 Baker Hughes Incorporated NMR apparatus for oil well logging of large and small diameter wells
US6586931B2 (en) * 2001-04-20 2003-07-01 Baker Hughes Incorporated NMR logging in the earth's magnetic field
US6518757B1 (en) 2002-03-08 2003-02-11 Schlumberger Technology Corporation Use of CPMG sequences with phase cycled refocusing pulses in inside-out NMR for phase encoded imaging and to eliminate coherent ringing within one scan

Also Published As

Publication number Publication date
GB0317670D0 (en) 2003-09-03
GB2396017B (en) 2006-03-15
US6781371B2 (en) 2004-08-24
CA2437850C (en) 2006-08-01
GB2396017A (en) 2004-06-09
US20040046552A1 (en) 2004-03-11

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Effective date: 20180820