NL1002438C2 - Epithermische-neutronendetector met verbeterde efficiency. - Google Patents

Epithermische-neutronendetector met verbeterde efficiency. Download PDF

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Publication number
NL1002438C2
NL1002438C2 NL1002438A NL1002438A NL1002438C2 NL 1002438 C2 NL1002438 C2 NL 1002438C2 NL 1002438 A NL1002438 A NL 1002438A NL 1002438 A NL1002438 A NL 1002438A NL 1002438 C2 NL1002438 C2 NL 1002438C2
Authority
NL
Netherlands
Prior art keywords
neutron
reflector
counter
detector
neutrons
Prior art date
Application number
NL1002438A
Other languages
English (en)
Dutch (nl)
Other versions
NL1002438A1 (nl
Inventor
Medhat Wahba Mickael
Original Assignee
Western Atlas Int
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 Western Atlas Int filed Critical Western Atlas Int
Publication of NL1002438A1 publication Critical patent/NL1002438A1/xx
Application granted granted Critical
Publication of NL1002438C2 publication Critical patent/NL1002438C2/nl

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T3/00—Measuring neutron radiation
    • 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
    • G01V5/104—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 secondary Y-rays as well as reflected or back-scattered neutrons
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Measurement Of Radiation (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
NL1002438A 1995-02-24 1996-02-23 Epithermische-neutronendetector met verbeterde efficiency. NL1002438C2 (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US39428995 1995-02-24
US08/394,289 US5581079A (en) 1995-02-24 1995-02-24 Epithermal neutron detector having enhanced efficiency

Publications (2)

Publication Number Publication Date
NL1002438A1 NL1002438A1 (nl) 1996-08-28
NL1002438C2 true NL1002438C2 (nl) 1999-03-12

Family

ID=23558324

Family Applications (1)

Application Number Title Priority Date Filing Date
NL1002438A NL1002438C2 (nl) 1995-02-24 1996-02-23 Epithermische-neutronendetector met verbeterde efficiency.

Country Status (5)

Country Link
US (1) US5581079A (no)
CA (1) CA2168997C (no)
GB (1) GB2299443B (no)
NL (1) NL1002438C2 (no)
NO (1) NO308816B1 (no)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5789752A (en) * 1996-05-22 1998-08-04 Western Atlas International, Inc. Thermal neutron porosity measurement apparatus and method using an accelerator type high-energy neutron source
GB0110208D0 (en) * 2001-04-26 2001-06-20 British Nuclear Fuels Plc Improvements in and relating to detectors
KR100931827B1 (ko) * 2007-02-02 2009-12-15 한국원자력연구원 환형 Ｈｅ―３ 검출기를 장착한 우물형 중성자 계수기
WO2010105064A2 (en) * 2009-03-13 2010-09-16 Baker Hughes Incorporated A novel configuration design of detector shielding for wireline and mwd/lwd down-hole thermal neutron porosity tools
RU2607335C2 (ru) * 2012-11-01 2017-01-10 Хэллибертон Энерджи Сервисиз, Инк. Способы и системы для обнаружения надтепловых и тепловых нейтронов
US10359374B2 (en) * 2016-04-19 2019-07-23 Halliburton Energy Services, Inc. Identification of annulus materials using formation porosity
CN109893780B (zh) * 2019-04-19 2021-07-23 兰州大学 一种bnct用超热中子通量探测器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB862379A (en) * 1957-11-22 1961-03-08 Siemens Ag Improvements in or relating to neutron detectors
US3823319A (en) * 1970-08-21 1974-07-09 Schlumberger Technology Corp Porosity determination with mudcake correction
EP0127931A1 (en) * 1983-04-07 1984-12-12 Mobil Oil Corporation System for subsurface neutron logging
US4581532A (en) * 1984-07-06 1986-04-08 Mobil Oil Corporation Directional epithermal neutron detector

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349243A (en) * 1962-12-07 1967-10-24 Siemens Ag Device for measuring neutron current densities having a concave neutron reflector
GB1019590A (en) * 1965-01-01 1966-02-09 Eberline Instr Corp Fast and slow neutron counter
GB1180450A (en) * 1967-03-17 1970-02-04 Rheinische Kalksteinwerke Arrangements for Determining the Moisture Content of Solid Substances by means of Neutron Irradiation
DE2447817C3 (de) * 1974-10-08 1978-09-07 Kernforschungsanlage Juelich Gmbh, 5170 Juelich Gerät zur Bestimmung der Äquivalentdosis oder der Äquivalentdosisleistung von Neutronen
US4152590A (en) * 1977-05-19 1979-05-01 Texaco Inc. Simultaneous thermal neutron decay time and porosity logging system
FR2620235B1 (fr) * 1987-09-08 1989-11-17 Commissariat Energie Atomique Dispositif de controle de criticite et de mesure de concentration de matiere fissile
US4590370A (en) * 1983-04-22 1986-05-20 Mobil Oil Corporation Epithermal neutron die-away logging
ATE67318T1 (de) * 1986-06-05 1991-09-15 Schlumberger Ltd Bohrlochvorrichtung mit einer beschleunigerneutronenquelle.
US4973839A (en) * 1989-03-23 1990-11-27 Schlumberger Technology Corporation Method and apparatus for epithermal neutron decay logging
US5068531A (en) * 1991-04-04 1991-11-26 Mobil Oil Corporation Method and apparatus for producing a porosity log of a subsurface formation corrected for detector standoff

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB862379A (en) * 1957-11-22 1961-03-08 Siemens Ag Improvements in or relating to neutron detectors
US3823319A (en) * 1970-08-21 1974-07-09 Schlumberger Technology Corp Porosity determination with mudcake correction
EP0127931A1 (en) * 1983-04-07 1984-12-12 Mobil Oil Corporation System for subsurface neutron logging
US4581532A (en) * 1984-07-06 1986-04-08 Mobil Oil Corporation Directional epithermal neutron detector

Also Published As

Publication number Publication date
GB9604616D0 (en) 1996-05-01
NL1002438A1 (nl) 1996-08-28
NO960675L (no) 1996-08-26
US5581079A (en) 1996-12-03
NO308816B1 (no) 2000-10-30
GB2299443A (en) 1996-10-02
CA2168997A1 (en) 1996-08-25
NO960675D0 (no) 1996-02-20
GB2299443B (en) 1999-07-21
CA2168997C (en) 1999-11-16

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AD1A A request for search or an international type search has been filed
RD2N Patents in respect of which a decision has been taken or a report has been made (novelty report)

Effective date: 19990111

PD2B A search report has been drawn up
VD1 Lapsed due to non-payment of the annual fee

Effective date: 20060901