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FR2377645A1 - PROCESS FOR DETERMINING THE PRESENCE OF URANIUM IN A FORMATION CROSSED BY A DRILLED HOLE - Google Patents

PROCESS FOR DETERMINING THE PRESENCE OF URANIUM IN A FORMATION CROSSED BY A DRILLED HOLE

Info

Publication number
FR2377645A1
FR2377645A1 FR7801249A FR7801249A FR2377645A1 FR 2377645 A1 FR2377645 A1 FR 2377645A1 FR 7801249 A FR7801249 A FR 7801249A FR 7801249 A FR7801249 A FR 7801249A FR 2377645 A1 FR2377645 A1 FR 2377645A1
Authority
FR
France
Prior art keywords
uranium
neutrons
determining
formation
drilled hole
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Withdrawn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
FR7801249A
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 FR2377645A1 publication Critical patent/FR2377645A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
    • G01V5/04—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging
    • G01V5/08—Prospecting 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
    • G01V5/10—Prospecting 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
    • G01V5/107—Prospecting 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
    • G01V5/108—Prospecting 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)
  • Measurement Of Radiation (AREA)

Abstract

Le procédé selon l'invention comporte l'irradiation cyclique de la formation 10 par une source de neutrons 13, la détection des neutrons thermiques au moyen d'un détecteur 15 et des neutrons épithermiques au moyen d'un détecteur 14, ces neutrons résu tant de l'irradiation de la formation, le comptage par des compteurs 41 et 42 des neutrons thermiques et épithermiques détectés pendant chaque cycle de fonctionnement, et la comparaison des comptes de neutrons thermiques et épithermiques pour obtenir une indication représentant la concentration de l'uranium dans la formation.The method according to the invention comprises the cyclic irradiation of the formation 10 by a neutron source 13, the detection of the thermal neutrons by means of a detector 15 and of the epithermal neutrons by means of a detector 14, these neutrons resulting from irradiation of the formation, counting by counters 41 and 42 of the thermal and epithermal neutrons detected during each operating cycle, and comparing the thermal and epithermal neutron counts to obtain an indication representing the concentration of uranium in Training.

FR7801249A 1977-01-17 1978-01-17 PROCESS FOR DETERMINING THE PRESENCE OF URANIUM IN A FORMATION CROSSED BY A DRILLED HOLE Withdrawn FR2377645A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75992977A 1977-01-17 1977-01-17

Publications (1)

Publication Number Publication Date
FR2377645A1 true FR2377645A1 (en) 1978-08-11

Family

ID=25057495

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7801249A Withdrawn FR2377645A1 (en) 1977-01-17 1978-01-17 PROCESS FOR DETERMINING THE PRESENCE OF URANIUM IN A FORMATION CROSSED BY A DRILLED HOLE

Country Status (9)

Country Link
JP (1) JPS5390101A (en)
AU (1) AU509481B2 (en)
BR (1) BR7800252A (en)
ES (1) ES465681A1 (en)
FR (1) FR2377645A1 (en)
IT (1) IT1091975B (en)
NZ (1) NZ185739A (en)
OA (1) OA05857A (en)
ZA (1) ZA777440B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2386827A1 (en) * 1977-04-07 1978-11-03 Mobil Oil METHOD AND SYSTEM FOR DETERMINING THE URANIUM CONTENT OF A FORMATION

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104373119B (en) * 2014-10-11 2017-03-08 中国地质大学（武汉） A kind of drill-following natural gamma based on core drilling surveys uranium instrument

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
US2971094A (en) * 1956-12-27 1961-02-07 Gulf Research Development Co Well logging
US3385969A (en) * 1962-09-11 1968-05-28 Schlumberger Technology Corp Neutron thermalization analysis
US3686503A (en) * 1970-05-18 1972-08-22 Mobil Oil Corp In-situ assaying for uranium in rock formations

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
US2971094A (en) * 1956-12-27 1961-02-07 Gulf Research Development Co Well logging
US3385969A (en) * 1962-09-11 1968-05-28 Schlumberger Technology Corp Neutron thermalization analysis
US3686503A (en) * 1970-05-18 1972-08-22 Mobil Oil Corp In-situ assaying for uranium in rock formations

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2386827A1 (en) * 1977-04-07 1978-11-03 Mobil Oil METHOD AND SYSTEM FOR DETERMINING THE URANIUM CONTENT OF A FORMATION

Also Published As

Publication number Publication date
IT1091975B (en) 1985-07-06
IT7819284A0 (en) 1978-01-16
AU509481B2 (en) 1980-05-15
BR7800252A (en) 1978-09-05
ES465681A1 (en) 1979-02-01
AU3151077A (en) 1979-06-21
JPS5390101A (en) 1978-08-08
NZ185739A (en) 1981-05-29
OA05857A (en) 1981-05-31
ZA777440B (en) 1979-07-25

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Legal Events

Date Code Title Description
RE Withdrawal of published application