FR2429441A1 - Determn. of parameters of geological formations near borehole - by diagraphy appts. utilising alternating electromagnetic field giving precise measurement of electromagnetic characteristics - Google Patents

Determn. of parameters of geological formations near borehole - by diagraphy appts. utilising alternating electromagnetic field giving precise measurement of electromagnetic characteristics

Info

Publication number
FR2429441A1
FR2429441A1 FR7818569A FR7818569A FR2429441A1 FR 2429441 A1 FR2429441 A1 FR 2429441A1 FR 7818569 A FR7818569 A FR 7818569A FR 7818569 A FR7818569 A FR 7818569A FR 2429441 A1 FR2429441 A1 FR 2429441A1
Authority
FR
France
Prior art keywords
geological formations
diagraphy
appts
parameters
electromagnetic field
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
FR7818569A
Other languages
French (fr)
Other versions
FR2429441B1 (en
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.)
Texaco Development Corp
Original Assignee
Texaco Development Corp
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 Texaco Development Corp filed Critical Texaco Development Corp
Priority to FR7818569A priority Critical patent/FR2429441A1/en
Publication of FR2429441A1 publication Critical patent/FR2429441A1/en
Application granted granted Critical
Publication of FR2429441B1 publication Critical patent/FR2429441B1/fr
Granted 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

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

A diagraphy appts. for determining the parameters of geological formations situated near a bore-hole incorporates means of generating an alternating electromagnetic field in the bore-hole at a frequency between 2 and 4 MHz and means of detection responding to the total electromagnetic field generated, comprising receptor coils arranged to produce a first, a second, and a third pair situated at successively greater longitudinal distances from the means of generation. Means of generating signals are connected to the means of detection to create a first, a second and a third signal, representative respectively of the phase differences in the field at the two coils of the first, second and third pair of coils. These signals contain information concerning the electromagnetic characteristics of the geological formations.
FR7818569A 1978-06-21 1978-06-21 Determn. of parameters of geological formations near borehole - by diagraphy appts. utilising alternating electromagnetic field giving precise measurement of electromagnetic characteristics Granted FR2429441A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7818569A FR2429441A1 (en) 1978-06-21 1978-06-21 Determn. of parameters of geological formations near borehole - by diagraphy appts. utilising alternating electromagnetic field giving precise measurement of electromagnetic characteristics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7818569A FR2429441A1 (en) 1978-06-21 1978-06-21 Determn. of parameters of geological formations near borehole - by diagraphy appts. utilising alternating electromagnetic field giving precise measurement of electromagnetic characteristics

Publications (2)

Publication Number Publication Date
FR2429441A1 true FR2429441A1 (en) 1980-01-18
FR2429441B1 FR2429441B1 (en) 1984-07-13

Family

ID=9209810

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7818569A Granted FR2429441A1 (en) 1978-06-21 1978-06-21 Determn. of parameters of geological formations near borehole - by diagraphy appts. utilising alternating electromagnetic field giving precise measurement of electromagnetic characteristics

Country Status (1)

Country Link
FR (1) FR2429441A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3052835A (en) * 1954-03-25 1962-09-04 Atlantic Refining Co Electrical well logging instrument
US3086168A (en) * 1959-03-30 1963-04-16 Halliburton Co Synthetic array logging system and method
FR1566182A (en) * 1967-11-28 1969-05-09
US3849721A (en) * 1973-08-23 1974-11-19 Schlumberger Technology Corp Microwave logging apparatus having dual processing channels
US3993944A (en) * 1975-12-22 1976-11-23 Texaco Inc. Movable oil measurement combining dual radio frequency induction and dual induction laterolog measurements
US4012689A (en) * 1974-10-24 1977-03-15 Texaco Inc. Radio frequency resistivity and dielectric constant well logging utilizing phase shift measurement

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3052835A (en) * 1954-03-25 1962-09-04 Atlantic Refining Co Electrical well logging instrument
US3086168A (en) * 1959-03-30 1963-04-16 Halliburton Co Synthetic array logging system and method
FR1566182A (en) * 1967-11-28 1969-05-09
US3849721A (en) * 1973-08-23 1974-11-19 Schlumberger Technology Corp Microwave logging apparatus having dual processing channels
US4012689A (en) * 1974-10-24 1977-03-15 Texaco Inc. Radio frequency resistivity and dielectric constant well logging utilizing phase shift measurement
US3993944A (en) * 1975-12-22 1976-11-23 Texaco Inc. Movable oil measurement combining dual radio frequency induction and dual induction laterolog measurements

Also Published As

Publication number Publication date
FR2429441B1 (en) 1984-07-13

Similar Documents

Publication Publication Date Title
SE7710481L (en) ELECTROMAGNETIC GREAT SATURITY
EP0242424A3 (en) Electromagnetic array profiling survey method
CA2144438A1 (en) Method of determining formation resistivity utilizing combined measurements of inductive and galvanic logging instruments
ES386865A1 (en) Induction logging methods and apparatus using more than one phase component of the received signal
DE3586508D1 (en) PHASE DETECTOR.
ES8609737A1 (en) Color display of related parameters.
FR2429441A1 (en) Determn. of parameters of geological formations near borehole - by diagraphy appts. utilising alternating electromagnetic field giving precise measurement of electromagnetic characteristics
US1897688A (en) Method of and apparatus for electric earth exploration
US2542462A (en) Surface wave cancellation electrical prospecting
GB2019004A (en) Well Logging Methods and Apparatus
US2948846A (en) Well logging systems
JPH07110382A (en) Underground electromagnetic surveying method and device
US2965837A (en) Method and apparatus for electrical well logging
JPS53142260A (en) Method and apparatus of detecting metal objects
SU1742751A1 (en) Method of determination of uniform cable electric length
JPS57100306A (en) Method for measuring buried pile length
JPS5543465A (en) Detection method of partial discharge pulse
SU1004941A1 (en) Induction logging device
SU879286A2 (en) Device for touch-free measuring of electroconductive surface tilt angle
JPS56137166A (en) Detecting method of leakage current
SU767503A1 (en) Device for measuring length and speed of ferromagnetic products
JPS5311072A (en) Phase constant measuring method
JPS5654573A (en) Signal detector using differential transformer type magnetic head
JPH0641985B2 (en) Data processing method and device for underground resistivity survey
JPS5229764A (en) Search coil

Legal Events

Date Code Title Description
ST Notification of lapse