GB2151028B - Shielded solenoid coil for well-logging - Google Patents

Shielded solenoid coil for well-logging

Info

Publication number
GB2151028B
GB2151028B GB08428303A GB8428303A GB2151028B GB 2151028 B GB2151028 B GB 2151028B GB 08428303 A GB08428303 A GB 08428303A GB 8428303 A GB8428303 A GB 8428303A GB 2151028 B GB2151028 B GB 2151028B
Authority
GB
United Kingdom
Prior art keywords
logging
well
solenoid coil
shielded solenoid
shielded
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
Application number
GB08428303A
Other versions
GB8428303D0 (en
GB2151028A (en
Inventor
Richard W Oldigs
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 NV
Schlumberger Ltd USA
Original Assignee
Schlumberger NV
Schlumberger Ltd USA
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 NV, Schlumberger Ltd USA filed Critical Schlumberger NV
Publication of GB8428303D0 publication Critical patent/GB8428303D0/en
Publication of GB2151028A publication Critical patent/GB2151028A/en
Application granted granted Critical
Publication of GB2151028B publication Critical patent/GB2151028B/en
Expired 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/363—Electric or magnetic shields or screens made of electrically conductive material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Electromagnetism (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
GB08428303A 1983-11-14 1984-11-08 Shielded solenoid coil for well-logging Expired GB2151028B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55123983A 1983-11-14 1983-11-14

Publications (3)

Publication Number Publication Date
GB8428303D0 GB8428303D0 (en) 1984-12-19
GB2151028A GB2151028A (en) 1985-07-10
GB2151028B true GB2151028B (en) 1987-03-04

Family

ID=24200429

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08428303A Expired GB2151028B (en) 1983-11-14 1984-11-08 Shielded solenoid coil for well-logging

Country Status (2)

Country Link
FR (1) FR2554930B1 (en)
GB (1) GB2151028B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8613789D0 (en) * 1986-06-06 1986-07-09 Bonar Bray Ltd Magnetic field sensor coil

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2623923A (en) * 1951-04-23 1952-12-30 Schlumberger Well Surv Corp Electrostatically shielded magnetic well logging system
US3094658A (en) * 1959-03-17 1963-06-18 Halliburton Co Logging system using electrostatically shielded coils
DE2220944C2 (en) * 1972-04-28 1974-02-14 Guenther Dipl.-Ing. 2209 Sushoern Weber Electronic, contactless switching device
US3983523A (en) * 1975-11-03 1976-09-28 General Electric Company Combination static plate and clamping ring
GB2057136B (en) * 1979-06-19 1984-01-04 Sphere Invest Electrostatic shields

Also Published As

Publication number Publication date
FR2554930B1 (en) 1987-02-27
FR2554930A1 (en) 1985-05-17
GB8428303D0 (en) 1984-12-19
GB2151028A (en) 1985-07-10

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Legal Events

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

Effective date: 19921108