CA2316596A1 - System and method for producing a conductivity log unaffected by shoulder effect and dip from data developed by a well tool - Google Patents

System and method for producing a conductivity log unaffected by shoulder effect and dip from data developed by a well tool Download PDF

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Publication number
CA2316596A1
CA2316596A1 CA002316596A CA2316596A CA2316596A1 CA 2316596 A1 CA2316596 A1 CA 2316596A1 CA 002316596 A CA002316596 A CA 002316596A CA 2316596 A CA2316596 A CA 2316596A CA 2316596 A1 CA2316596 A1 CA 2316596A1
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CA
Canada
Prior art keywords
voltage data
well tool
producing
coil
unaffected
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
CA002316596A
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French (fr)
Other versions
CA2316596C (en
Inventor
Gerald N. Minerbo
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
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Schlumberger Canada Ltd
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Filing date
Publication date
Application filed by Schlumberger Canada Ltd filed Critical Schlumberger Canada Ltd
Publication of CA2316596A1 publication Critical patent/CA2316596A1/en
Application granted granted Critical
Publication of CA2316596C publication Critical patent/CA2316596C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • G01V3/26—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device
    • G01V3/28—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device using induction coils
    • 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
    • G01V3/38—Processing data, e.g. for analysis, for interpretation, for correction

Abstract

A system and method for producing a conductivity log, unaffected by shoulder effect and dip, from voltage data developed by a well tool (205) disposed in a borehole. The method involves accessing the voltage data developed by the tool, processing the data, reconstructing two-coil voltage data, and computing differences of the two-coil data, to derive a conductivity profile representative of the formation. A system including a well tool adapted to move through a borehole with an apparatus (210) coupled to the tool. The apparatus adapted with means to access voltage data developed by the receivers disposed on the well tool. The apparatus further adapted with means for boosting the voltage data, means for reconstructing two-coil voltages from the boosted voltage data, means for processing the reconstructed two-coil voltage data, and means for producing a conductivity log from the processed two-coil voltages.
CA002316596A 1999-09-07 2000-08-22 System and method for producing a conductivity log unaffected by shoulder effect and dip from data developed by a well tool Expired - Fee Related CA2316596C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/391,149 US6216089B1 (en) 1999-09-07 1999-09-07 Method and apparatus for producing a conductivity log unaffected by shoulder effect and dip from data developed by a well tool
US09/391,149 1999-09-07

Publications (2)

Publication Number Publication Date
CA2316596A1 true CA2316596A1 (en) 2001-03-07
CA2316596C CA2316596C (en) 2002-07-02

Family

ID=23545462

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002316596A Expired - Fee Related CA2316596C (en) 1999-09-07 2000-08-22 System and method for producing a conductivity log unaffected by shoulder effect and dip from data developed by a well tool

Country Status (6)

Country Link
US (1) US6216089B1 (en)
AU (1) AU750090B2 (en)
CA (1) CA2316596C (en)
GB (1) GB2354078B (en)
ID (1) ID27184A (en)
NO (1) NO20004456L (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6606565B1 (en) 1998-12-14 2003-08-12 Halliburton Energy Services, Inc. High resolution array induction tool
US6603312B2 (en) 2000-12-11 2003-08-05 Cbg Corporation Multi-frequency array induction tool
US6795774B2 (en) 2002-10-30 2004-09-21 Halliburton Energy Services, Inc. Method for asymptotic dipping correction
US7814036B2 (en) * 2003-06-19 2010-10-12 Haliburton Energy Services, Inc. Processing well logging data with neural network
US7091877B2 (en) * 2003-10-27 2006-08-15 Schlumberger Technology Corporation Apparatus and methods for determining isotropic and anisotropic formation resistivity in the presence of invasion
US8030935B2 (en) * 2004-10-15 2011-10-04 Halliburton Energy Services, Inc. Minimizing the effect of borehole current in tensor induction logging tools
US7457707B2 (en) * 2006-11-30 2008-11-25 Schlumberger Technology Corporation Method for determining an effective formation conductivity for induction log borehole correction
US8775084B2 (en) * 2007-09-20 2014-07-08 Baker Hughes Incorporated Adaptive borehole corrections accounting for eccentricity for array laterologs
WO2010024802A1 (en) * 2008-08-26 2010-03-04 Halliburton Energy Services, Inc. Method and system of processing gamma count rate decay curves using neural networks
US8898045B2 (en) 2009-04-21 2014-11-25 Halliburton Energy Services, Inc. System and method of predicting gas saturation of a formation using neural networks
AU2010359365B2 (en) 2010-08-16 2014-03-27 Halliburton Energy Services, Inc. Optimized arrays for look ahead-of-bit applications

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL294973A (en) 1946-06-11
US3056917A (en) 1959-11-30 1962-10-02 Schlumberger Well Surv Corp Methods and apparatus for investigating earth formations
US3147429A (en) 1960-02-08 1964-09-01 Schlumberger Well Surv Corp Induction method and apparatus for investigating earth formation utilizing two quadrature phase components of a detected signal
US3179879A (en) 1960-05-16 1965-04-20 Schlumberger Well Surv Corp Well logging apparatus with means for modifying one signal component by a second signal component when a predetermined condition occurs
US4472684A (en) 1980-07-24 1984-09-18 Schlumberger Technology Corporation Deep investigation induction logging with mirror image coil arrays
US4583045A (en) 1981-08-19 1986-04-15 Schlumberger Technology Corporation Pulsed induction logging for determining invaded zone properties
US5157605A (en) 1987-04-27 1992-10-20 Schlumberger Technology Corporation Induction logging method and apparatus including means for combining on-phase and quadrature components of signals received at varying frequencies and including use of multiple receiver means associated with a single transmitter
US5041975A (en) 1988-09-06 1991-08-20 Schlumberger Technology Corporation Borehole correction system for an array induction well-logging apparatus
US5115198A (en) 1989-09-14 1992-05-19 Halliburton Logging Services, Inc. Pulsed electromagnetic dipmeter method and apparatus employing coils with finite spacing
US5210691A (en) 1990-05-08 1993-05-11 Schlumberger Technology Corporation Method and apparatus for producing a more accurate resistivity log from data recorded by an induction sonde in a borehole
US5184079A (en) 1990-11-13 1993-02-02 Schlumberger Technology Corporation Method and apparatus for correcting data developed from a well tool disposed at a dip angle in a wellbore to eliminate the effects of the dip angle on the data
US5757191A (en) 1994-12-09 1998-05-26 Halliburton Energy Services, Inc. Virtual induction sonde for steering transmitted and received signals

Also Published As

Publication number Publication date
GB2354078A (en) 2001-03-14
CA2316596C (en) 2002-07-02
NO20004456L (en) 2001-03-08
AU750090B2 (en) 2002-07-11
GB0019527D0 (en) 2000-09-27
ID27184A (en) 2001-03-08
NO20004456D0 (en) 2000-09-06
US6216089B1 (en) 2001-04-10
AU5193200A (en) 2001-03-08
GB2354078B (en) 2001-10-17

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