CA2187487A1 - Rotating magnet for distance and direction measurements - Google Patents

Rotating magnet for distance and direction measurements

Info

Publication number
CA2187487A1
CA2187487A1 CA002187487A CA2187487A CA2187487A1 CA 2187487 A1 CA2187487 A1 CA 2187487A1 CA 002187487 A CA002187487 A CA 002187487A CA 2187487 A CA2187487 A CA 2187487A CA 2187487 A1 CA2187487 A1 CA 2187487A1
Authority
CA
Canada
Prior art keywords
borehole
magnetic field
distance
amplitude
variations
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
CA002187487A
Other languages
French (fr)
Other versions
CA2187487C (en
Inventor
Arthur F. Kuckes
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.)
Halliburton Energy Services Inc
Original Assignee
Vector Magnetics LLC
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 Vector Magnetics LLC filed Critical Vector Magnetics LLC
Publication of CA2187487A1 publication Critical patent/CA2187487A1/en
Application granted granted Critical
Publication of CA2187487C publication Critical patent/CA2187487C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • E21B47/0228—Determining slope or direction of the borehole, e.g. using geomagnetism using electromagnetic energy or detectors therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geophysics (AREA)
  • Mining & Mineral Resources (AREA)
  • Electromagnetism (AREA)
  • Remote Sensing (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

A method for determining the distance and direction from a first borehole to a second borehole includes generating, by way of a rotating magnetic field source at a first location in a second borehole, and elliptically polarized magnetic field in the region of the first borehole. First and second sensors positioned at an observation point in the first borehole measure the amplitude and relative phase of respective first and second components of the polarized magnetic field and from these measurements, the direction, relative to the sensors, from the observation point to the first location is determined. The distance between these points is determined by measuring at plural observation points amplitude variations with depth of the rotating magnetic field in the first borehole, and computing theoretical variations in the amplitude for different assumed distances between the observation points and the location of the magnetic field source. The measured amplitude variations are compared with theoretical variations to determine the distance between the first and second boreholes.
CA002187487A 1995-12-05 1996-10-09 Rotating magnet for distance and direction measurements Expired - Lifetime CA2187487C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US567,578 1995-12-05
US08/567,578 US5589775A (en) 1993-11-22 1995-12-05 Rotating magnet for distance and direction measurements from a first borehole to a second borehole

Publications (2)

Publication Number Publication Date
CA2187487A1 true CA2187487A1 (en) 1997-06-06
CA2187487C CA2187487C (en) 2005-09-13

Family

ID=24267744

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002187487A Expired - Lifetime CA2187487C (en) 1995-12-05 1996-10-09 Rotating magnet for distance and direction measurements

Country Status (2)

Country Link
US (1) US5589775A (en)
CA (1) CA2187487C (en)

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US7321293B2 (en) 2004-08-06 2008-01-22 Halliburton Energy Services, Inc. Integrated magnetic ranging tool
US7878270B2 (en) 2004-11-19 2011-02-01 Halliburton Energy Services, Inc. Methods and apparatus for drilling, completing and configuring U-tube boreholes
US8146685B2 (en) 2004-11-19 2012-04-03 Halliburton Energy Services, Inc. Methods and apparatus for drilling, completing and configuring U-tube boreholes
US8272447B2 (en) 2004-11-19 2012-09-25 Halliburton Energy Services, Inc. Methods and apparatus for drilling, completing and configuring U-tube boreholes

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