GB1279105A - Vertical resistivity logging - Google Patents

Vertical resistivity logging

Info

Publication number
GB1279105A
GB1279105A GB4971769A GB4971769A GB1279105A GB 1279105 A GB1279105 A GB 1279105A GB 4971769 A GB4971769 A GB 4971769A GB 4971769 A GB4971769 A GB 4971769A GB 1279105 A GB1279105 A GB 1279105A
Authority
GB
United Kingdom
Prior art keywords
antenna
depth interval
field
vertical
oscillator
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
GB4971769A
Inventor
Richard John Runge
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.)
Chevron USA Inc
Original Assignee
Chevron Research and Technology Co
Chevron Research Co
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 Chevron Research and Technology Co, Chevron Research Co filed Critical Chevron Research and Technology Co
Priority to GB4971769A priority Critical patent/GB1279105A/en
Publication of GB1279105A publication Critical patent/GB1279105A/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

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

1279105 Well-logging CHEVRON RESEARCH CO 9 Oct 1969 49717/69 Heading G1N The vertical resistivity of earth formation surrounding a vertical borehole is determined by establishing a substantially uniform, timevarying electromagnetic field over an elongated depth interval in the earth formation to induce a uniform, vertical electric field about the centre of said depth interval, and detecting the potential difference between a pair of electrodes 20, 22 spaced apart about the centre of said depth interval. The electromagnetic field is created by a dipole antenna (10) which is energized by an oscillator (36) carried in the sand 18, Fig. 2 (not shown). The induced electric field is made very much larger than the potential field, due to current flowing in the formation via the ends 48, 54 of the antenna, by adjusting the frequency of the oscillator and the length of the antenna. Alternatively, the potential field may be eliminated by insulating the ends of the antenna, Figs. 2B, 4, 4A, 5 (not shown).
GB4971769A 1969-10-09 1969-10-09 Vertical resistivity logging Expired GB1279105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4971769A GB1279105A (en) 1969-10-09 1969-10-09 Vertical resistivity logging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4971769A GB1279105A (en) 1969-10-09 1969-10-09 Vertical resistivity logging

Publications (1)

Publication Number Publication Date
GB1279105A true GB1279105A (en) 1972-06-28

Family

ID=10453301

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4971769A Expired GB1279105A (en) 1969-10-09 1969-10-09 Vertical resistivity logging

Country Status (1)

Country Link
GB (1) GB1279105A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2320095A (en) * 1996-12-06 1998-06-10 Schlumberger Ltd Borehole apparatus
CN114200526A (en) * 2020-09-02 2022-03-18 中国石油天然气股份有限公司 Electromagnetic exploration method and device
CN116291418A (en) * 2023-05-19 2023-06-23 中海油田服务股份有限公司 Logging instrument for electric imaging while drilling

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2320095A (en) * 1996-12-06 1998-06-10 Schlumberger Ltd Borehole apparatus
GB2320095B (en) * 1996-12-06 1999-03-10 Schlumberger Ltd Borehole apparatus
US6002257A (en) * 1996-12-06 1999-12-14 Schlumberger Technology Corporation Method and apparatus for well bore hole-finding with simultaneous borehole or formation sensing
CN114200526A (en) * 2020-09-02 2022-03-18 中国石油天然气股份有限公司 Electromagnetic exploration method and device
CN114200526B (en) * 2020-09-02 2023-08-22 中国石油天然气股份有限公司 Electromagnetic exploration method and device
CN116291418A (en) * 2023-05-19 2023-06-23 中海油田服务股份有限公司 Logging instrument for electric imaging while drilling
CN116291418B (en) * 2023-05-19 2023-07-18 中海油田服务股份有限公司 Logging instrument for electric imaging while drilling

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Legal Events

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