FR2386827A1 - METHOD AND SYSTEM FOR DETERMINING THE URANIUM CONTENT OF A FORMATION - Google Patents

METHOD AND SYSTEM FOR DETERMINING THE URANIUM CONTENT OF A FORMATION

Info

Publication number
FR2386827A1
FR2386827A1 FR7809938A FR7809938A FR2386827A1 FR 2386827 A1 FR2386827 A1 FR 2386827A1 FR 7809938 A FR7809938 A FR 7809938A FR 7809938 A FR7809938 A FR 7809938A FR 2386827 A1 FR2386827 A1 FR 2386827A1
Authority
FR
France
Prior art keywords
formation
neutrons
uranium content
determining
uranium
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.)
Withdrawn
Application number
FR7809938A
Other languages
French (fr)
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.)
ExxonMobil Oil Corp
Original Assignee
Mobil Oil 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 Mobil Oil Corp filed Critical Mobil Oil Corp
Publication of FR2386827A1 publication Critical patent/FR2386827A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
    • G01V5/04Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging
    • G01V5/08Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays
    • G01V5/10Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays using neutron sources
    • G01V5/107Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays using neutron sources and detecting reflected or back-scattered neutrons
    • G01V5/108Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays using neutron sources and detecting reflected or back-scattered neutrons the neutron source being of the pulsed type

Landscapes

  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

Le procédé selon l'invention consiste à utiliser un premier outil de diagraphie contenu dans une boîte 12 contenant une source pulsée de neutrons 13 commandée par impulsions par un circuit de commande 18a et un détecteur de neutrons résultant de l'irradiation de la formation environnante 10 pour envoyer à travers un câble 17 des signaux à un système de mesure comportant des compteurs 41 et 42 et un détecteur de rapport 45, et un second outil semblable au premier mais ayant une source continue de neutrons pour l'étalonnage d'après les résultats obtenus dans un trou foré dans une formation ayant une teneur connue en uranium afin d'obtenir par comparaison une indication représentant la concentration du minerai d'uraniumThe method according to the invention consists in using a first logging tool contained in a box 12 containing a pulsed source of neutrons 13 controlled by pulses by a control circuit 18a and a neutron detector resulting from the irradiation of the surrounding formation 10. for sending signals through a cable 17 to a measuring system comprising counters 41 and 42 and a ratio detector 45, and a second tool similar to the first but having a continuous source of neutrons for calibration according to the results obtained in a hole drilled in a formation having a known uranium content in order to obtain by comparison an indication representing the concentration of the uranium ore

FR7809938A 1977-04-07 1978-04-04 METHOD AND SYSTEM FOR DETERMINING THE URANIUM CONTENT OF A FORMATION Withdrawn FR2386827A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78562477A 1977-04-07 1977-04-07

Publications (1)

Publication Number Publication Date
FR2386827A1 true FR2386827A1 (en) 1978-11-03

Family

ID=25136088

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7809938A Withdrawn FR2386827A1 (en) 1977-04-07 1978-04-04 METHOD AND SYSTEM FOR DETERMINING THE URANIUM CONTENT OF A FORMATION

Country Status (11)

Country Link
JP (1) JPS53125901A (en)
AR (1) AR224105A1 (en)
AU (1) AU515618B2 (en)
BR (1) BR7801678A (en)
CA (1) CA1092256A (en)
ES (1) ES467412A1 (en)
FR (1) FR2386827A1 (en)
IT (1) IT1094334B (en)
NZ (1) NZ186152A (en)
OA (1) OA05930A (en)
ZA (1) ZA781025B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920204A (en) * 1956-09-04 1960-01-05 Well Surveys Inc Apparatus for simultaneous detection of thermal and epithermal neutrons
US3435217A (en) * 1965-06-28 1969-03-25 Mobil Oil Corp Production of chemistry-dependent gamma ray and thermal neutron logs corrected for porosity
US3686503A (en) * 1970-05-18 1972-08-22 Mobil Oil Corp In-situ assaying for uranium in rock formations
FR2377645A1 (en) * 1977-01-17 1978-08-11 Mobil Oil PROCESS FOR DETERMINING THE PRESENCE OF URANIUM IN A FORMATION CROSSED BY A DRILLED HOLE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920204A (en) * 1956-09-04 1960-01-05 Well Surveys Inc Apparatus for simultaneous detection of thermal and epithermal neutrons
US3435217A (en) * 1965-06-28 1969-03-25 Mobil Oil Corp Production of chemistry-dependent gamma ray and thermal neutron logs corrected for porosity
US3686503A (en) * 1970-05-18 1972-08-22 Mobil Oil Corp In-situ assaying for uranium in rock formations
FR2377645A1 (en) * 1977-01-17 1978-08-11 Mobil Oil PROCESS FOR DETERMINING THE PRESENCE OF URANIUM IN A FORMATION CROSSED BY A DRILLED HOLE

Also Published As

Publication number Publication date
CA1092256A (en) 1980-12-23
JPS53125901A (en) 1978-11-02
ZA781025B (en) 1979-10-31
IT7822072A0 (en) 1978-04-06
OA05930A (en) 1981-06-30
AU515618B2 (en) 1981-04-16
AR224105A1 (en) 1981-10-30
BR7801678A (en) 1978-11-21
IT1094334B (en) 1985-07-26
NZ186152A (en) 1981-05-29
ES467412A1 (en) 1979-02-01
AU3407078A (en) 1979-09-20

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Legal Events

Date Code Title Description
RE Withdrawal of published application