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NO20016101L - Fremgangsmåte og apparat for kansellering av borehullseffekter pga en skråstilt eller tverrstilt magnetiskdipol - Google Patents

Fremgangsmåte og apparat for kansellering av borehullseffekter pga en skråstilt eller tverrstilt magnetiskdipol

Info

Publication number
NO20016101L
NO20016101L NO20016101A NO20016101A NO20016101L NO 20016101 L NO20016101 L NO 20016101L NO 20016101 A NO20016101 A NO 20016101A NO 20016101 A NO20016101 A NO 20016101A NO 20016101 L NO20016101 L NO 20016101L
Authority
NO
Norway
Prior art keywords
borehole
current
transverse magnetic
instrument
magnetic dipole
Prior art date
Application number
NO20016101A
Other languages
English (en)
Other versions
NO20016101D0 (no
Inventor
Stephen D Bonner
Richard A Rosthal
Brian Clark
Thomas D Barber
Dean M Homan
Dzevat Omeragic
Original Assignee
Schlumberger Technology Bv
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 Technology Bv filed Critical Schlumberger Technology Bv
Publication of NO20016101D0 publication Critical patent/NO20016101D0/no
Publication of NO20016101L publication Critical patent/NO20016101L/no

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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (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)

Abstract

Det er beskrevet fremgangsmåter og anordninger for å minimalisere eller eliminere en uønsket, aksial elektrisk strøm indusert langs et undergrunns bore-hull i forbindelse med undergrunnsmålinger med sender- og/eller mottaker-antenner (Tx, Rx) som er hovedsakelig tidsvarierende magnetiske dipoler med sine dipolmomenter innrettet med en vinkel til borehullsaksen. Noen antenner (Tx, Rx) er anordnet inne i borehullet på instrumenter som har et ikke-ledende bæreorgan. En fremgangsmåte innbefatter å frembringe en alternativ bane for strømmene langs instrumentlegemet. En annen fremgangsmåte omfatter å sende ut en regulert strøm for å motvirke den uønskede strøm. En annen fremgangsmåte korrigerer for effektene av strømmen ved å bruke en overlagringsteknikk. En utføreisesform av instrumentet innbefatter en antenne (Tx) anbrakt mellom et par elektrisk koplede elektroder (E-i, E). Antennen (Tx) er anordnet på instrumentet slik at den omfatter en skråstilt eller tverrstilt magnetisk dipol.
NO20016101A 2000-12-15 2001-12-14 Fremgangsmåte og apparat for kansellering av borehullseffekter pga en skråstilt eller tverrstilt magnetiskdipol NO20016101L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/737,891 US6573722B2 (en) 2000-12-15 2000-12-15 Method and apparatus for cancellation of borehole effects due to a tilted or transverse magnetic dipole

Publications (2)

Publication Number Publication Date
NO20016101D0 NO20016101D0 (no) 2001-12-14
NO20016101L true NO20016101L (no) 2002-06-17

Family

ID=24965715

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20016101A NO20016101L (no) 2000-12-15 2001-12-14 Fremgangsmåte og apparat for kansellering av borehullseffekter pga en skråstilt eller tverrstilt magnetiskdipol

Country Status (6)

Country Link
US (4) US6573722B2 (no)
AU (1) AU765066B2 (no)
CA (1) CA2363789C (no)
GB (1) GB2376076B (no)
NO (1) NO20016101L (no)
RU (1) RU2305300C2 (no)

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Also Published As

Publication number Publication date
US20030146753A1 (en) 2003-08-07
US20030146751A1 (en) 2003-08-07
US6573722B2 (en) 2003-06-03
GB2376076B (en) 2003-11-05
CA2363789A1 (en) 2002-06-15
NO20016101D0 (no) 2001-12-14
CA2363789C (en) 2004-05-04
AU9340401A (en) 2002-06-20
US6680613B2 (en) 2004-01-20
US6624634B2 (en) 2003-09-23
US20020105332A1 (en) 2002-08-08
US20030155924A1 (en) 2003-08-21
GB0129575D0 (en) 2002-01-30
RU2305300C2 (ru) 2007-08-27
GB2376076A (en) 2002-12-04
AU765066B2 (en) 2003-09-04
US6710601B2 (en) 2004-03-23

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