DK0459844T3 - Fremgangsmåde og apparat til epitermal neutronporøsitetsborehulslogging - Google Patents

Fremgangsmåde og apparat til epitermal neutronporøsitetsborehulslogging

Info

Publication number
DK0459844T3
DK0459844T3 DK91401062.4T DK91401062T DK0459844T3 DK 0459844 T3 DK0459844 T3 DK 0459844T3 DK 91401062 T DK91401062 T DK 91401062T DK 0459844 T3 DK0459844 T3 DK 0459844T3
Authority
DK
Denmark
Prior art keywords
epithermal
neutron
down time
derived
porosity
Prior art date
Application number
DK91401062.4T
Other languages
English (en)
Inventor
Paul Albats
Russell C Hertzog
William A Loomis
Peter Wraight
Arthur D Liberman
Original Assignee
Schlumberger Ltd
Schlumberger Holdings
Schlumberger Technology Bv
Schlumberger Services Petrol
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 Ltd, Schlumberger Holdings, Schlumberger Technology Bv, Schlumberger Services Petrol filed Critical Schlumberger Ltd
Application granted granted Critical
Publication of DK0459844T3 publication Critical patent/DK0459844T3/da

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)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of Radiation (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Luminescent Compositions (AREA)
DK91401062.4T 1990-05-01 1991-04-23 Fremgangsmåde og apparat til epitermal neutronporøsitetsborehulslogging DK0459844T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/517,268 US5051581A (en) 1990-05-01 1990-05-01 Method and apparatus for epithermal neutron porosity well logging

Publications (1)

Publication Number Publication Date
DK0459844T3 true DK0459844T3 (da) 1996-04-15

Family

ID=24059108

Family Applications (1)

Application Number Title Priority Date Filing Date
DK91401062.4T DK0459844T3 (da) 1990-05-01 1991-04-23 Fremgangsmåde og apparat til epitermal neutronporøsitetsborehulslogging

Country Status (17)

Country Link
US (1) US5051581A (da)
EP (1) EP0459844B1 (da)
AT (1) ATE135472T1 (da)
AU (1) AU643983B2 (da)
BR (1) BR9101642A (da)
DE (1) DE69117803T2 (da)
DK (1) DK0459844T3 (da)
DZ (1) DZ1502A1 (da)
EG (1) EG19325A (da)
IE (1) IE911454A1 (da)
MA (1) MA24510A1 (da)
NO (1) NO304040B1 (da)
NZ (1) NZ237576A (da)
OA (1) OA09290A (da)
TN (1) TNSN91028A1 (da)
TR (1) TR26463A (da)
ZA (1) ZA912502B (da)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235185A (en) * 1992-01-09 1993-08-10 Schlumberger Technology Corporation Formation sigma measurement from thermal neutron detection
US5349184A (en) * 1993-01-21 1994-09-20 Schlumberger Technology Corporation Method and apparatus for reducing matrix density effects on porosity measurements during epithermal neutron porosity well logging
US5322126A (en) * 1993-04-16 1994-06-21 The Energex Company System and method for monitoring fracture growth during hydraulic fracture treatment
US5413179A (en) * 1993-04-16 1995-05-09 The Energex Company System and method for monitoring fracture growth during hydraulic fracture treatment
US5420422A (en) * 1994-01-11 1995-05-30 Schlumberger Technology Corporation Methods and apparatus for epithermal neutron porosity logging
US5608215A (en) 1994-09-16 1997-03-04 Schlumberger Technology Corporation Method and apparatus for determining density of earth formations
US5539225A (en) * 1994-09-16 1996-07-23 Schlumberger Technology Corporation Accelerator-based methods and apparatus for measurement-while-drilling
US5804820A (en) * 1994-09-16 1998-09-08 Schlumberger Technology Corporation Method for determining density of an earth formation
US5528030A (en) * 1995-03-17 1996-06-18 Western Atlas International, Inc. System for determining gas saturation of a formation and a wellbore through casing
US5532481A (en) * 1995-03-23 1996-07-02 Western Atlas International, Inc. System for measuring epithermal neutron porosity having reduced borehole effect
US5635712A (en) * 1995-05-04 1997-06-03 Halliburton Company Method for monitoring the hydraulic fracturing of a subterranean formation
US5596191A (en) * 1995-05-22 1997-01-21 Western Atlas International, Inc. Method and apparatus for epithermal neutron porosity measurement corrected for tool standoff and formation lithology
US6032102A (en) * 1997-07-31 2000-02-29 Schlumberger Technology Corporation Method and apparatus for measuring well characteristics and formation properties
US7148471B2 (en) * 2001-05-18 2006-12-12 Schlumberger Technology Corporation Well logging apparatus and method for measuring formation properties
US6571619B2 (en) * 2001-10-11 2003-06-03 Schlumberger Technology Corporation Real time petrophysical evaluation system
US6894274B2 (en) * 2002-12-11 2005-05-17 Pathfinder Energy Services, Inc. Estimation of formation porosity using water measurement
US7339161B2 (en) * 2005-02-24 2008-03-04 Schlumberger Technology Corporation Shielded pads for detecting subsurface radiation phenomena
US7544929B1 (en) 2008-05-13 2009-06-09 Precision Energy Services, Inc. Borehole imaging and standoff determination using neutron measurements
US9031790B2 (en) * 2010-03-23 2015-05-12 Schlumberger Technology Corporation System and method for correction of borehole effects in a neutron porosity measurement
US9372277B2 (en) 2010-04-21 2016-06-21 Schlumberger Technology Corporation Neutron porosity downhole tool with improved precision and reduced lithology effects
US8604417B2 (en) * 2011-08-26 2013-12-10 Baker Hughes Incorporated Targetless pulsed neutron generator using beam-beam interaction
US9753177B2 (en) * 2013-11-12 2017-09-05 Baker Hughes Incorporated Standoff specific corrections for density logging
CN105604538B (zh) * 2014-11-03 2024-02-02 中国石油集团长城钻探工程有限公司 可控中子源补偿中子测井仪及其控制电路

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4097737A (en) * 1976-11-01 1978-06-27 Mobil Oil Corporation Epithermal die-away porosity logging
US4152590A (en) * 1977-05-19 1979-05-01 Texaco Inc. Simultaneous thermal neutron decay time and porosity logging system
US4266126A (en) * 1979-06-25 1981-05-05 Mobil Oil Corporation Pulsed radiation decay logging
US4283624A (en) * 1979-06-25 1981-08-11 Mobil Oil Corporation Epithermal neutron decay logging
US4423323A (en) * 1981-09-09 1983-12-27 Schlumberger Technology Corporation Neutron logging method and apparatus for determining a formation characteristic free of environmental effects
US4760252A (en) * 1983-06-28 1988-07-26 Schlumberger Technology Corporation Well logging tool with an accelerator neutron source
US4625110A (en) * 1983-10-24 1986-11-25 Halliburton Company Epithermal neutron porosity measurement
EP0436990B1 (en) * 1986-06-05 1995-04-12 Schlumberger Limited A neutron source monitor for an accelerator neutron source
US4910397A (en) * 1989-01-10 1990-03-20 Mobil Oil Corporation Pulsed neutron porosity logging

Also Published As

Publication number Publication date
ATE135472T1 (de) 1996-03-15
NO304040B1 (no) 1998-10-12
BR9101642A (pt) 1991-12-10
MA24510A1 (fr) 1998-12-31
DE69117803T2 (de) 1996-10-02
TNSN91028A1 (fr) 1992-10-25
NZ237576A (en) 1994-05-26
NO911714L (no) 1991-11-04
DZ1502A1 (fr) 2004-09-13
TR26463A (tr) 1995-03-15
EP0459844A2 (en) 1991-12-04
NO911714D0 (no) 1991-04-30
OA09290A (en) 1992-08-31
ZA912502B (en) 1992-01-29
EP0459844B1 (en) 1996-03-13
AU7377891A (en) 1991-11-07
US5051581A (en) 1991-09-24
AU643983B2 (en) 1993-12-02
DE69117803D1 (de) 1996-04-18
EP0459844A3 (en) 1992-12-30
EG19325A (en) 1995-08-30
IE911454A1 (en) 1991-11-06

Similar Documents

Publication Publication Date Title
DK0459844T3 (da) Fremgangsmåde og apparat til epitermal neutronporøsitetsborehulslogging
MY119506A (en) Method and apparatus for determining density of earth formations.
EP0389345A3 (en) Methods and apparatus for epithermal neutron logging
CA2244342A1 (en) A method and apparatus for measuring well characteristics and formation properties
US5536938A (en) Pulsed neutron decay logging
EP0173605A3 (en) Methods and apparatus for measuring thermal neutron decay characteristics of earth formations
CA2074594A1 (en) Method and apparatus for producing a porosity log of a subsurface formation corrected for detector standoff
EP0387449A3 (en) Pulsed neutron porosity logging
DE3673575D1 (de) Verfahren und vorrichtung mit bohrlochkompensation.
IE40854B1 (en) Simultaneous oxygen and silicon neutron activation well log using pulsed neutron source
US4501964A (en) Borehole compensated oxygen activation nuclear well logging
CA2153629A1 (en) Logging method and apparatus using a pad to measure density
GB2291706A (en) Method and apparatus for producing a porosity log of a subsurface formation
CA2063475A1 (en) Method and apparatus for producing a porosity log of a subsurface formation corrected for detector standoff
DE3471764D1 (en) Epithermal neutron porosity measurement
EP0389371A3 (en) Method and apparatus for epithermal neutron decay logging
MY106168A (en) Method and apparatus for epithermal neutron porosity well logging
US4315148A (en) Method and apparatus for measuring neutron characteristics of material surrounding a borehole
CA1149971A (en) Method and apparatus for measuring neutron characteristics of material surrounding a borehole
MY120933A (en) Method for logging an earth formation using recycled alpha data
MX170656B (es) Metodo y aparato para perforacion de pozo de carbono/oxigeno
GB1471788A (en) Two detector neutron porosity and water salinity apparatus and methods
CA1092256A (en) Uranium logging in earth formations
CA1053807A (en) Simultaneous thermal neutron decay time and shale compensated chlorine log system
Peelman Method and apparatus for simultaneous measurement of borehole and formation neutron decay-times