NO910824L - Fremgangsmaate og innretning for bestemmelse av magnetisk forstyrrelse i et borehull. - Google Patents

Fremgangsmaate og innretning for bestemmelse av magnetisk forstyrrelse i et borehull.

Info

Publication number
NO910824L
NO910824L NO91910824A NO910824A NO910824L NO 910824 L NO910824 L NO 910824L NO 91910824 A NO91910824 A NO 91910824A NO 910824 A NO910824 A NO 910824A NO 910824 L NO910824 L NO 910824L
Authority
NO
Norway
Prior art keywords
bill
procedure
determining magnetic
magnetic difference
difference
Prior art date
Application number
NO91910824A
Other languages
English (en)
Other versions
NO910824D0 (no
Inventor
David Morgan
Anne Holmes
Original Assignee
Baroid Technology Inc
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 Baroid Technology Inc filed Critical Baroid Technology Inc
Publication of NO910824D0 publication Critical patent/NO910824D0/no
Publication of NO910824L publication Critical patent/NO910824L/no

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/022—Measuring gradient
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/02—Magnetic compasses
    • G01C17/28—Electromagnetic compasses
    • G01C17/30—Earth-inductor compasses

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Fluid Mechanics (AREA)
  • Geophysics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • Geophysics And Detection Of Objects (AREA)
NO91910824A 1990-03-03 1991-03-01 Fremgangsmaate og innretning for bestemmelse av magnetisk forstyrrelse i et borehull. NO910824L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9004812A GB2241583A (en) 1990-03-03 1990-03-03 Determination of magnetic interference in a borehole

Publications (2)

Publication Number Publication Date
NO910824D0 NO910824D0 (no) 1991-03-01
NO910824L true NO910824L (no) 1991-09-04

Family

ID=10671962

Family Applications (1)

Application Number Title Priority Date Filing Date
NO91910824A NO910824L (no) 1990-03-03 1991-03-01 Fremgangsmaate og innretning for bestemmelse av magnetisk forstyrrelse i et borehull.

Country Status (6)

Country Link
CA (1) CA2037394A1 (no)
DE (1) DE4106849A1 (no)
FR (1) FR2659145A1 (no)
GB (1) GB2241583A (no)
NL (1) NL9100343A (no)
NO (1) NO910824L (no)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9409550D0 (en) * 1994-05-12 1994-06-29 Halliburton Co Location determination using vector measurements
GB2314163A (en) * 1996-06-14 1997-12-17 Western Atlas Int Inc Orientation measurement instruments

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE755895A (fr) * 1969-09-24 1971-02-15 Commissariat Energie Atomique Procede et dispositif de compensation de l'influence des champsmagnetiques parasites d'un helicoptere
GB1578053A (en) * 1977-02-25 1980-10-29 Russell Attitude Syst Ltd Surveying of boreholes
FR2542365B1 (fr) * 1983-03-11 1985-10-25 Commissariat Energie Atomique Dispositif de compensation automatique du magnetisme de garnitures de forage
GB8906233D0 (en) * 1989-03-17 1989-05-04 Russell Anthony W Surveying of boreholes

Also Published As

Publication number Publication date
FR2659145A1 (fr) 1991-09-06
NL9100343A (nl) 1991-10-01
GB2241583A (en) 1991-09-04
NO910824D0 (no) 1991-03-01
DE4106849A1 (de) 1991-09-05
CA2037394A1 (en) 1991-09-04
GB9004812D0 (en) 1990-04-25

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