NO874110L - Fremgangsmaate for noeyaktigere aa bestemme termiske neutron-desintegrasjonstid-konstanter. - Google Patents

Fremgangsmaate for noeyaktigere aa bestemme termiske neutron-desintegrasjonstid-konstanter.

Info

Publication number
NO874110L
NO874110L NO874110A NO874110A NO874110L NO 874110 L NO874110 L NO 874110L NO 874110 A NO874110 A NO 874110A NO 874110 A NO874110 A NO 874110A NO 874110 L NO874110 L NO 874110L
Authority
NO
Norway
Prior art keywords
procedure
effective
time constants
thermal neutron
determine thermal
Prior art date
Application number
NO874110A
Other languages
English (en)
Other versions
NO874110D0 (no
NO171876C (no
NO171876B (no
Inventor
George Atlali
Bruce Thomas Murdoch
Original Assignee
Western Atlas Int Inc
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 Inc filed Critical Western Atlas Int Inc
Publication of NO874110D0 publication Critical patent/NO874110D0/no
Publication of NO874110L publication Critical patent/NO874110L/no
Publication of NO171876B publication Critical patent/NO171876B/no
Publication of NO171876C publication Critical patent/NO171876C/no

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
    • G01V5/101—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 the secondary Y-rays produced in the surrounding layers of the bore hole
    • 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

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)
NO874110A 1987-01-15 1987-09-30 Fremgangsmaate for aa bestemme en overgangssone paa en straalingsdesintegrasjonskurve som genereres i et borehull og omgivende formasjon NO171876C (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/004,161 US4814610A (en) 1987-01-15 1987-01-15 Method for more accurately determining thermal neutron decay time constants

Publications (4)

Publication Number Publication Date
NO874110D0 NO874110D0 (no) 1987-09-30
NO874110L true NO874110L (no) 1988-07-18
NO171876B NO171876B (no) 1993-02-01
NO171876C NO171876C (no) 1993-05-12

Family

ID=21709474

Family Applications (1)

Application Number Title Priority Date Filing Date
NO874110A NO171876C (no) 1987-01-15 1987-09-30 Fremgangsmaate for aa bestemme en overgangssone paa en straalingsdesintegrasjonskurve som genereres i et borehull og omgivende formasjon

Country Status (5)

Country Link
US (1) US4814610A (no)
EP (1) EP0279111A1 (no)
CA (1) CA1282190C (no)
DK (1) DK16288A (no)
NO (1) NO171876C (no)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2598350B2 (ja) * 1991-09-27 1997-04-09 理研電子株式会社 噴火・火山性地震の予知方法及びその装置
JP2671092B2 (ja) * 1992-12-25 1997-10-29 理研電子株式会社 火山活動方向観測装置
US6665616B2 (en) * 2001-04-17 2003-12-16 Medhat W. Mickael Method for determining decay characteristics of multi-component downhole decay data
US6686738B2 (en) * 2001-04-17 2004-02-03 Baker Hughes Incorporated Method for determining decay characteristics of multi-component downhole decay data
US6754586B1 (en) * 2003-03-28 2004-06-22 Schlumberger Technology Corporation Apparatus and methods for monitoring output from pulsed neutron sources
EP1884878A1 (en) * 2006-08-02 2008-02-06 Hitachi Ltd. Computer system for simulating a physical system
CN101713830B (zh) * 2009-11-17 2011-11-09 重庆大学 一种瞬发中子衰减常数的综合在线测定方法
US11733421B2 (en) 2021-08-31 2023-08-22 China Petroleum & Chemical Corporation Method for obtaining near-wellbore true borehole sigma and true formation sigma by using a nuclear logging tool during oil and gas exploration
US11703611B2 (en) 2021-09-16 2023-07-18 China Petroleum & Chemical Corporation Computer-implemented method of using a non-transitory computer readable memory device with a pre programmed neural network and a trained neural network computer program product for obtaining a true borehole sigma and a true formation sigma

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3379884A (en) * 1954-06-10 1968-04-23 Dresser Ind Method and apparatus for neutron lifetime well logging
US3358142A (en) * 1964-04-20 1967-12-12 Dresser Ind Detector gating system employed in a pulsed neutron logging system
US3566116A (en) * 1966-11-08 1971-02-23 Schlumberger Technology Corp Method and apparatus for measuring neutron characteristics of a material surrounding a well bore
US3379882A (en) * 1967-03-16 1968-04-23 Dresser Ind Method and apparatus for neutron well logging based on the lifetime of neutrons in the formations
US3800150A (en) * 1972-05-09 1974-03-26 Mobil Oil Corp Method and apparatus for radioactive well logging employing partially overlapping time windows for detection of radiation
US4292518A (en) * 1978-10-26 1981-09-29 Schlumberger Technology Corp. Methods and apparatus for measuring thermal neutron decay characteristics of earth formations
US4327290A (en) * 1979-11-02 1982-04-27 Schlumberger Technology Corp. Method and apparatus for nuclear well logging with optimized timing for simultaneous measurement of thermal neutron decay time and gamma ray pulse height spectra
US4316086A (en) * 1980-07-28 1982-02-16 Dresser Industries, Inc. Method and apparatus for measuring neutron characteristics of material surrounding a borehole
US4390783A (en) * 1980-08-04 1983-06-28 Schlumberger Technology Corporation Spectroscopic analysis with background compensation
US4409481A (en) * 1980-08-28 1983-10-11 Halliburton Company Method for simultaneous measurement of thermal neutron decay components
US4424444A (en) * 1980-08-28 1984-01-03 Halliburton Company Method for simultaneous measurement of borehole and formation neutron lifetimes
US4388529A (en) * 1980-08-28 1983-06-14 Halliburton Company System for simultaneous measurement of borehole and formation neutron lifetimes
US4600838A (en) * 1984-07-20 1986-07-15 Schlumberger Technology Corporation Methods and apparatus for measuring thermal neutron decay characteristics of earth formations
US4625111A (en) * 1985-02-04 1986-11-25 Halliburton Company Method and apparatus for pulsed neutron capture measurement of borehole conditions and formation hydrogen index

Also Published As

Publication number Publication date
NO874110D0 (no) 1987-09-30
DK16288A (da) 1988-07-16
EP0279111A1 (en) 1988-08-24
DK16288D0 (da) 1988-01-14
NO171876C (no) 1993-05-12
CA1282190C (en) 1991-03-26
US4814610A (en) 1989-03-21
NO171876B (no) 1993-02-01

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