WO2011094405A3 - Time dependent neutron-gamma spectroscopy - Google Patents

Time dependent neutron-gamma spectroscopy Download PDF

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Publication number
WO2011094405A3
WO2011094405A3 PCT/US2011/022717 US2011022717W WO2011094405A3 WO 2011094405 A3 WO2011094405 A3 WO 2011094405A3 US 2011022717 W US2011022717 W US 2011022717W WO 2011094405 A3 WO2011094405 A3 WO 2011094405A3
Authority
WO
WIPO (PCT)
Prior art keywords
interest
parameter
time dependent
earth formation
gamma spectroscopy
Prior art date
Application number
PCT/US2011/022717
Other languages
French (fr)
Other versions
WO2011094405A2 (en
Inventor
Magarete M. Kopal
Feyzi Inanc
Loren P. Roberts
Original Assignee
Baker Hughes Incorporated
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
Priority claimed from US13/014,183 external-priority patent/US9766368B2/en
Application filed by Baker Hughes Incorporated filed Critical Baker Hughes Incorporated
Priority to GB1214332.7A priority Critical patent/GB2489899B/en
Priority to BR112012018881-0A priority patent/BR112012018881B1/en
Publication of WO2011094405A2 publication Critical patent/WO2011094405A2/en
Publication of WO2011094405A3 publication Critical patent/WO2011094405A3/en
Priority to NO20120821A priority patent/NO344425B1/en

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

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)
  • Measurement Of Radiation (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

An apparatus and method for estimating at least one parameter of interest of an earth formation including an estimation of the parameter of interest using a time- dependent ratio of information obtained from at least one neutron detector through the exposure of the earth formation to a radiation source, particularly a pulsed nuclear source. The apparatus includes a processor and storage subsystem with a program that, when executed, implements the method. Also, an apparatus and method for estimating at least one parameter of interest of an earth formation including an estimation of the parameter of interest using a first component and a second component of an information set obtained using a single radiation detector.
PCT/US2011/022717 2010-01-28 2011-01-27 Time dependent neutron-gamma spectroscopy WO2011094405A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1214332.7A GB2489899B (en) 2010-01-28 2011-01-27 Time dependent neutron-gamma spectroscopy
BR112012018881-0A BR112012018881B1 (en) 2010-01-28 2011-01-27 method and apparatus for estimating at least one parameter of interest for land formation
NO20120821A NO344425B1 (en) 2010-01-28 2012-07-17 Time-dependent neutron gamma spectroscopy for measuring the properties of the subsurface

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US29919110P 2010-01-28 2010-01-28
US61/299,191 2010-01-28
US13/014,183 US9766368B2 (en) 2010-01-28 2011-01-26 Time dependent neutron-gamma spectroscopy
US13/014,183 2011-01-26

Publications (2)

Publication Number Publication Date
WO2011094405A2 WO2011094405A2 (en) 2011-08-04
WO2011094405A3 true WO2011094405A3 (en) 2011-11-17

Family

ID=44358057

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/022717 WO2011094405A2 (en) 2010-01-28 2011-01-27 Time dependent neutron-gamma spectroscopy

Country Status (1)

Country Link
WO (1) WO2011094405A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9599743B2 (en) * 2015-04-29 2017-03-21 Baker Hughes Incorporated Density measurements using detectors on a pulsed neutron measurement platform

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5777323A (en) * 1996-05-10 1998-07-07 Schlumberger Technology Corporation Method for logging an earth formation using recycled alpha data
US5828214A (en) * 1996-02-23 1998-10-27 Western Atlas International, Inc. Method and apparatus for resistivity determination by nuclear magnetic resonance measurement
US20030009288A1 (en) * 2001-04-17 2003-01-09 Baker Hughes, Inc. Method for determining decay characteristics of multi-component downhole decay data
US20060192096A1 (en) * 2005-02-28 2006-08-31 Schlumberger Technology Corporation Apparatus and methods for interlaced density and neutron measurements

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5828214A (en) * 1996-02-23 1998-10-27 Western Atlas International, Inc. Method and apparatus for resistivity determination by nuclear magnetic resonance measurement
US5777323A (en) * 1996-05-10 1998-07-07 Schlumberger Technology Corporation Method for logging an earth formation using recycled alpha data
US20030009288A1 (en) * 2001-04-17 2003-01-09 Baker Hughes, Inc. Method for determining decay characteristics of multi-component downhole decay data
US20060192096A1 (en) * 2005-02-28 2006-08-31 Schlumberger Technology Corporation Apparatus and methods for interlaced density and neutron measurements

Also Published As

Publication number Publication date
WO2011094405A2 (en) 2011-08-04

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