GB2417089B - Apparatus for reducing borehole current effects - Google Patents

Apparatus for reducing borehole current effects

Info

Publication number
GB2417089B
GB2417089B GB0519345A GB0519345A GB2417089B GB 2417089 B GB2417089 B GB 2417089B GB 0519345 A GB0519345 A GB 0519345A GB 0519345 A GB0519345 A GB 0519345A GB 2417089 B GB2417089 B GB 2417089B
Authority
GB
United Kingdom
Prior art keywords
current effects
reducing borehole
borehole current
reducing
effects
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.)
Expired - Fee Related
Application number
GB0519345A
Other versions
GB2417089A (en
GB0519345D0 (en
Inventor
Kuo Chiang Chen
Richard A Rosthal
Charles Kibbe
Gary A Hazen
Thomas D Barber
Robert C Smith
Stephen D Bonner
David T Oliver
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.)
Gemalto Terminals Ltd
Schlumberger Holdings Ltd
Original Assignee
Gemalto Terminals Ltd
Schlumberger Holdings 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
Priority claimed from US10/604,622 external-priority patent/US6933726B2/en
Application filed by Gemalto Terminals Ltd, Schlumberger Holdings Ltd filed Critical Gemalto Terminals Ltd
Publication of GB0519345D0 publication Critical patent/GB0519345D0/en
Publication of GB2417089A publication Critical patent/GB2417089A/en
Application granted granted Critical
Publication of GB2417089B publication Critical patent/GB2417089B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G01V3/26—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
    • G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
    • G01V3/30—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with electromagnetic waves

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
GB0519345A 2003-08-05 2004-07-15 Apparatus for reducing borehole current effects Expired - Fee Related GB2417089B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/604,622 US6933726B2 (en) 2003-08-05 2003-08-05 Apparatus and methods for reducing borehole current effects
GB0415829A GB2404742B (en) 2003-08-05 2004-07-15 Apparatus and methods for reducing borehole current effects

Publications (3)

Publication Number Publication Date
GB0519345D0 GB0519345D0 (en) 2005-11-02
GB2417089A GB2417089A (en) 2006-02-15
GB2417089B true GB2417089B (en) 2006-09-20

Family

ID=35613729

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0519345A Expired - Fee Related GB2417089B (en) 2003-08-05 2004-07-15 Apparatus for reducing borehole current effects

Country Status (1)

Country Link
GB (1) GB2417089B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7986145B2 (en) 2006-05-01 2011-07-26 Schlumberger Technology Corporation Logging tool sonde sleeve

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2408807A (en) * 2003-12-02 2005-06-08 Schlumberger Holdings Apparatus and method for reducing borehole eccentricity effects

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2408807A (en) * 2003-12-02 2005-06-08 Schlumberger Holdings Apparatus and method for reducing borehole eccentricity effects

Also Published As

Publication number Publication date
GB2417089A (en) 2006-02-15
GB0519345D0 (en) 2005-11-02

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20170715