MX3204E - Mejoras en aparato y metodo para investigar formaciones terrestres con una fuente de neutrones - Google Patents

Mejoras en aparato y metodo para investigar formaciones terrestres con una fuente de neutrones

Info

Publication number
MX3204E
MX3204E MX100030U MX10003074U MX3204E MX 3204 E MX3204 E MX 3204E MX 100030 U MX100030 U MX 100030U MX 10003074 U MX10003074 U MX 10003074U MX 3204 E MX3204 E MX 3204E
Authority
MX
Mexico
Prior art keywords
neutron
source
output
characteristic
signal
Prior art date
Application number
MX100030U
Other languages
English (en)
Inventor
Charles W Johnstone
Original Assignee
Schlumberger Surenco Sa
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 Schlumberger Surenco Sa filed Critical Schlumberger Surenco Sa
Publication of MX3204E publication Critical patent/MX3204E/es

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
    • 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
    • G01V5/102—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 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)
  • Measurement Of Radiation (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

La presente invención se refiere a mejoras en aparato para investigar formaciones terrestres con una fuente de neutrones, que comprende una fuente de neutrones con pulsos de alta energía y primero y segundo detectores de poblaciones de neutrones en sus respectivas primera y segunda ubicaciones, espaciadas por distancias diferentes desde la fuente de neutrones; y un circuito de determinación de la característica de neutrón seleccionada, acoplado a la salida del primer detector, el cual proporciona una primera señal característica de ubicación seleccionada de neutrones, tal como una representación del valor aparente del tiempo de decaimiento térmico de neutrones en la primera ubicación, caracterizadas por un circuito de combinación que tiene una entrada sensible a la señal seleccionada y otra entrada sensible a una función de la salida de población de neutrones del segundo detector, y una salida para la señal de seguridad de funcionamiento que varía como una función de un cociente de los valores aparentes de la características del neutrón seleccionada, tal como un tiempo de decaimento térmico de neutrón, en las primeras y segundas ubicaciones. (VER FIGURA).
MX100030U 1973-05-01 1974-04-30 Mejoras en aparato y metodo para investigar formaciones terrestres con una fuente de neutrones MX3204E (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US356150A US3890501A (en) 1973-05-01 1973-05-01 Neutron logging reliability techniques and apparatus

Publications (1)

Publication Number Publication Date
MX3204E true MX3204E (es) 1980-07-04

Family

ID=23400344

Family Applications (1)

Application Number Title Priority Date Filing Date
MX100030U MX3204E (es) 1973-05-01 1974-04-30 Mejoras en aparato y metodo para investigar formaciones terrestres con una fuente de neutrones

Country Status (13)

Country Link
US (1) US3890501A (es)
AR (1) AR208665A1 (es)
BR (1) BR7403533D0 (es)
CA (1) CA1019470A (es)
DE (1) DE2420776C2 (es)
EG (1) EG13442A (es)
FR (1) FR2228226B1 (es)
GB (1) GB1470568A (es)
IT (1) IT1010285B (es)
MX (1) MX3204E (es)
NO (1) NO142370C (es)
OA (1) OA04702A (es)
SU (1) SU847948A3 (es)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4031367A (en) * 1975-03-31 1977-06-21 Schlumberger Technology Corporation Methods and apparatus for pulse height analyzer offset control
US4267447A (en) * 1978-10-26 1981-05-12 Schlumberger Technology Corp. Methods and apparatus for measuring thermal neutron decay characteristics of earth formations
US4292518A (en) * 1978-10-26 1981-09-29 Schlumberger Technology Corp. Methods and apparatus for measuring thermal neutron decay characteristics of earth formations
IE49620B1 (en) * 1978-10-26 1985-11-13 Schlumberger Ltd Method and apparatus for measuring thermal neutron characteristics
US4224516A (en) * 1978-10-26 1980-09-23 Schlumberger Technology Corporation Methods and apparatus for measuring thermal neutron decay characteristics of earth formations
US4445033A (en) * 1981-09-14 1984-04-24 Schlumberger Technology Corporation Methods and apparatus for environmental correction of thermal neutron logs
US4712007A (en) * 1985-04-01 1987-12-08 S.I.E., Inc. Pulsed neutron logging method using cumulative count curves
US4709234A (en) * 1985-05-06 1987-11-24 Halliburton Company Power-conserving self-contained downhole gauge system
US4663628A (en) * 1985-05-06 1987-05-05 Halliburton Company Method of sampling environmental conditions with a self-contained downhole gauge system
US4866607A (en) * 1985-05-06 1989-09-12 Halliburton Company Self-contained downhole gauge system
US4665398A (en) * 1985-05-06 1987-05-12 Halliburton Company Method of sampling and recording information pertaining to a physical condition detected in a well bore
US4883956A (en) * 1985-12-23 1989-11-28 Schlumberger Technology Corporation Methods and apparatus for gamma-ray spectroscopy and like measurements
US4926044A (en) * 1986-01-31 1990-05-15 Schlumberger Technology Corporation Thermal decay time logging method and apparatus
US4947040A (en) * 1989-07-14 1990-08-07 Schlumberger Technology Corporation Thermal decay time logging method and tool
US5105080A (en) * 1991-04-02 1992-04-14 Schlumberger Technology Corporation Method and apparatus for determining the respective contributions of borehole and earth formation in gamma ray spectroscopy
US7088097B2 (en) * 2004-12-31 2006-08-08 Kjt Enterprises, Inc. Method for fitting a sum of exponentials to experimental data by linearization using a numerical integration approximation, and its application to well log data
US9869791B2 (en) 2015-06-17 2018-01-16 Baker Hughes, A Ge Company, Llc Measurement of downhole radiation

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061725A (en) * 1958-03-03 1962-10-30 California Research Corp Comparison logging of geologic formation constituents
US3373280A (en) * 1963-12-18 1968-03-12 Mobil Oil Corp Pulsed radioactive well logging method for measurement of porosity and salinity
US3483376A (en) * 1966-08-03 1969-12-09 Schlumberger Technology Corp Two neutron detector earth formation porosity logging technique
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
US3509342A (en) * 1966-12-08 1970-04-28 Schlumberger Technology Corp Two detector pulsed neutron logging tool
US3546512A (en) * 1967-02-13 1970-12-08 Schlumberger Technology Corp Neutron generator including an ion source with a massive ferromagnetic probe electrode and a permanent magnet-electrode
US3609366A (en) * 1968-11-01 1971-09-28 Schlumberger Technology Corp Systems for neutron decay time well logging
US3662179A (en) * 1969-04-25 1972-05-09 Schlumberger Technology Corp Pulse neutron logging tool control and transmission system

Also Published As

Publication number Publication date
DE2420776A1 (de) 1974-12-05
AU6800174A (en) 1975-10-23
SU847948A3 (ru) 1981-07-15
NO741470L (no) 1974-11-04
FR2228226B1 (es) 1976-10-15
OA04702A (fr) 1980-08-31
BR7403533D0 (pt) 1974-12-03
AR208665A1 (es) 1977-02-28
FR2228226A1 (es) 1974-11-29
IT1010285B (it) 1977-01-10
GB1470568A (en) 1977-04-14
NO142370C (no) 1980-08-13
US3890501A (en) 1975-06-17
CA1019470A (en) 1977-10-18
EG13442A (en) 1983-03-31
NO142370B (no) 1980-04-28
DE2420776C2 (de) 1984-02-23

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