GB1251810A - - Google Patents

Info

Publication number
GB1251810A
GB1251810A GB1251810DA GB1251810A GB 1251810 A GB1251810 A GB 1251810A GB 1251810D A GB1251810D A GB 1251810DA GB 1251810 A GB1251810 A GB 1251810A
Authority
GB
United Kingdom
Prior art keywords
resistivity
current
gain
potential
formation
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
Other languages
English (en)
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 filed Critical
Publication of GB1251810A publication Critical patent/GB1251810A/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
    • G01V3/20—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with propagation of electric current
    • G01V3/24—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with propagation of electric current using AC
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
GB1251810D 1967-11-16 1968-11-13 Expired GB1251810A (https=)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR128399 1967-11-16

Publications (1)

Publication Number Publication Date
GB1251810A true GB1251810A (https=) 1971-11-03

Family

ID=8641764

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1251810D Expired GB1251810A (https=) 1967-11-16 1968-11-13

Country Status (5)

Country Link
US (1) US3539910A (https=)
DE (1) DE1807966B2 (https=)
FR (1) FR1552081A (https=)
GB (1) GB1251810A (https=)
NL (1) NL157722B (https=)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA953785A (en) * 1971-03-09 1974-08-27 Rudolf J. Rammner Apparatus for transmitting data from a hole drilled in the earth
FR2128200B1 (https=) * 1971-03-11 1974-03-01 Schlumberger Prospection
US4359687A (en) * 1980-01-25 1982-11-16 Shell Oil Company Method and apparatus for determining shaliness and oil saturations in earth formations using induced polarization in the frequency domain
US4736300A (en) * 1982-04-30 1988-04-05 Western Atlas International, Inc. Automatic gain control of formation measurements by varying induced current flow
GB2392729B (en) * 2001-04-18 2005-04-27 Baker Hughes Inc An apparatus and method for wellbore resistivity determination and imaging using capacitive coupling
EP1355171B1 (en) * 2002-04-17 2007-02-07 Services Petroliers Schlumberger Phase discrimination for micro electrical measurement in non-conductive fluid

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2803796A (en) * 1953-05-21 1957-08-20 Schlumberger Well Surv Corp Electrical apparatus for well logging
US2776402A (en) * 1954-03-30 1957-01-01 Schlumberger Well Surv Corp Electrical well logging
US3031612A (en) * 1958-09-08 1962-04-24 Schlumberger Well Surv Corp Apparatus for investigating earth formations
US3056917A (en) * 1959-11-30 1962-10-02 Schlumberger Well Surv Corp Methods and apparatus for investigating earth formations
US3119061A (en) * 1960-01-21 1964-01-21 Schlumberger Well Surv Corp Methods and apparatus for investigating earth formations which minimize the influence of electrical skin effect
US3388324A (en) * 1965-09-23 1968-06-11 Schlumberger Technology Corp Electrode array methods and apparatus, with undesired induced voltage cancellation, for investigating earth formations

Also Published As

Publication number Publication date
US3539910A (en) 1970-11-10
FR1552081A (https=) 1969-01-03
DE1807966A1 (de) 1969-07-03
NL157722B (nl) 1978-08-15
DE1807966B2 (de) 1971-03-04
NL6816073A (https=) 1969-05-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years