FR3041108B1 - METHOD FOR CARTOGRAPHING SIMULTANEOUSLY THE ELECTRICAL CONDUCTIVITY AND THE DIELECTRIC PERMITTIVITY OF THE BASEMENT. - Google Patents

METHOD FOR CARTOGRAPHING SIMULTANEOUSLY THE ELECTRICAL CONDUCTIVITY AND THE DIELECTRIC PERMITTIVITY OF THE BASEMENT.

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Publication number
FR3041108B1
FR3041108B1 FR1558423A FR1558423A FR3041108B1 FR 3041108 B1 FR3041108 B1 FR 3041108B1 FR 1558423 A FR1558423 A FR 1558423A FR 1558423 A FR1558423 A FR 1558423A FR 3041108 B1 FR3041108 B1 FR 3041108B1
Authority
FR
France
Prior art keywords
electrical conductivity
dielectric permittivity
electromagnetic measurements
cartographing
basement
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.)
Active
Application number
FR1558423A
Other languages
French (fr)
Other versions
FR3041108A1 (en
Inventor
Bernard Bourgeois
Francis Lenain
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.)
BRGM SA
Original Assignee
BRGM SA
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Filing date
Publication date
Application filed by BRGM SA filed Critical BRGM SA
Priority to FR1558423A priority Critical patent/FR3041108B1/en
Publication of FR3041108A1 publication Critical patent/FR3041108A1/en
Application granted granted Critical
Publication of FR3041108B1 publication Critical patent/FR3041108B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • 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
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/081—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices the magnetic field is produced by the objects or geological structures
    • 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
    • G01V3/15—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for use during transport, e.g. by a person, vehicle or boat

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Electromagnetism (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

Procédé pour cartographier simultanément la conductivité électrique et la permittivité diélectrique d'une zone du sous-sol, dans lequel on réalise des mesures électromagnétiques et l'on construit un modèle tabulaire multicouche (MOD) ayant un nombre donné de couches, caractérisé en ce que: - on réalise les mesures électromagnétiques pour au moins un offset en un point de ladite zone, en utilisant plusieurs fréquences choisies dans la gamme des fréquences intermédiaires ; - on calcule pour chaque point de mesure, pour chaque offset et pour chaque fréquence une résistivité et une permittivité apparentes ; - on construit en chaque point de mesure le modèle tabulaire multicouche (MOD) de conductivité électrique et de permittivité diélectrique par inversion directe des mesures électromagnétiques au moyen d'un logiciel d'inversion déduisant simultanément une valeur de conductivité électrique (δ), une valeur de permittivité diélectrique (ϵ, ϵr) et une épaisseur pour chaque couche du modèle.A method for simultaneously mapping the electrical conductivity and the dielectric permittivity of a subsurface area, in which electromagnetic measurements are made and a multilayered tabular model (MOD) having a given number of layers is constructed, characterized in that electromagnetic measurements are taken for at least one offset at a point in said zone, by using several frequencies chosen in the range of intermediate frequencies; for each measuring point, for each offset and for each frequency, an apparent resistivity and permittivity is calculated; the multilayer tabular model (MOD) of electrical conductivity and dielectric permittivity is constructed at each measurement point by direct inversion of the electromagnetic measurements by means of an inversion software simultaneously deriving an electrical conductivity value (δ), a value dielectric permittivity (ε, εr) and a thickness for each layer of the model.

FR1558423A 2015-09-10 2015-09-10 METHOD FOR CARTOGRAPHING SIMULTANEOUSLY THE ELECTRICAL CONDUCTIVITY AND THE DIELECTRIC PERMITTIVITY OF THE BASEMENT. Active FR3041108B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1558423A FR3041108B1 (en) 2015-09-10 2015-09-10 METHOD FOR CARTOGRAPHING SIMULTANEOUSLY THE ELECTRICAL CONDUCTIVITY AND THE DIELECTRIC PERMITTIVITY OF THE BASEMENT.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1558423A FR3041108B1 (en) 2015-09-10 2015-09-10 METHOD FOR CARTOGRAPHING SIMULTANEOUSLY THE ELECTRICAL CONDUCTIVITY AND THE DIELECTRIC PERMITTIVITY OF THE BASEMENT.

Publications (2)

Publication Number Publication Date
FR3041108A1 FR3041108A1 (en) 2017-03-17
FR3041108B1 true FR3041108B1 (en) 2019-04-19

Family

ID=54366406

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1558423A Active FR3041108B1 (en) 2015-09-10 2015-09-10 METHOD FOR CARTOGRAPHING SIMULTANEOUSLY THE ELECTRICAL CONDUCTIVITY AND THE DIELECTRIC PERMITTIVITY OF THE BASEMENT.

Country Status (1)

Country Link
FR (1) FR3041108B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110879418B (en) * 2019-11-28 2023-05-23 东华理工大学 Frequency domain electric source electromagnetic field apparent conductivity calculation method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2390743A1 (en) * 1977-05-09 1978-12-08 Geophysique Cie Gle ELECTROMAGNETIC PROSPECTION OF THE BASEMENT BY INDUCTION, ASSOCIATED WITH PROSPECTION BY ELECTRIC SURVEY
CA2328587C (en) * 1999-12-17 2009-08-11 Geosensors Inc. Modular electromagnetic sensing apparatus

Also Published As

Publication number Publication date
FR3041108A1 (en) 2017-03-17

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