WO2007002693A3 - Well logging with reduced usage of radioisotopic sources - Google Patents

Well logging with reduced usage of radioisotopic sources Download PDF

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Publication number
WO2007002693A3
WO2007002693A3 PCT/US2006/025029 US2006025029W WO2007002693A3 WO 2007002693 A3 WO2007002693 A3 WO 2007002693A3 US 2006025029 W US2006025029 W US 2006025029W WO 2007002693 A3 WO2007002693 A3 WO 2007002693A3
Authority
WO
WIPO (PCT)
Prior art keywords
radioisotopic
well bore
log
output
measurements
Prior art date
Application number
PCT/US2006/025029
Other languages
French (fr)
Other versions
WO2007002693A8 (en
WO2007002693A2 (en
Inventor
Harry D Smith Jr
John A Quirein
Jeffery L Grable
Dingding Chen
Original Assignee
Halliburton Energy Serv Inc
Harry D Smith Jr
John A Quirein
Jeffery L Grable
Dingding Chen
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 US11/165,892 external-priority patent/US7613665B2/en
Application filed by Halliburton Energy Serv Inc, Harry D Smith Jr, John A Quirein, Jeffery L Grable, Dingding Chen filed Critical Halliburton Energy Serv Inc
Priority to BRPI0611579-9A priority Critical patent/BRPI0611579A2/en
Priority to AU2006261707A priority patent/AU2006261707B2/en
Priority to GB0723890A priority patent/GB2441463B/en
Priority to CA2604738A priority patent/CA2604738C/en
Publication of WO2007002693A2 publication Critical patent/WO2007002693A2/en
Publication of WO2007002693A8 publication Critical patent/WO2007002693A8/en
Publication of WO2007002693A3 publication Critical patent/WO2007002693A3/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
    • G06N3/00—Computing arrangements based on biological models
    • G06N3/02—Neural networks
    • G06N3/08—Learning methods
    • G06N3/086—Learning methods using evolutionary algorithms, e.g. genetic algorithms or genetic programming
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
    • G06N3/00—Computing arrangements based on biological models
    • G06N3/02—Neural networks
    • G06N3/04—Architecture, e.g. interconnection topology
    • G06N3/045—Combinations of networks

Abstract

Logging systems and methods are disclosed to reduce usage of radioisotopic sources. Some embodiments comprise collecting at least one output log of a training well bore from measurements with a radioisotopic source; collecting at least one input log of the training well bore from measurements by a non-radioisotopic logging tool; training a neural network to predict the output log from the at least one input log; collecting at least one input log of a development well bore from measurements by the non-radioisotopic logging tool; and processing the at least one input log of the development well bore to synthesize at least one output log of the development well bore. The output logs may include formation density and neutron porosity logs.
PCT/US2006/025029 2005-06-24 2006-06-26 Well logging with reduced usage of radioisotopic sources WO2007002693A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BRPI0611579-9A BRPI0611579A2 (en) 2005-06-24 2006-06-26 registration method, information carrier, and registration system
AU2006261707A AU2006261707B2 (en) 2005-06-24 2006-06-26 Well logging with reduced usage of radioisotopic sources
GB0723890A GB2441463B (en) 2005-06-24 2006-06-26 Well logging the reduced usage of radioisotopic sources
CA2604738A CA2604738C (en) 2005-06-24 2006-06-26 Well logging with reduced usage of radioisotopic sources

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US11/165,892 US7613665B2 (en) 2005-06-24 2005-06-24 Ensembles of neural networks with different input sets
US11/165,892 2005-06-24
US11/270,284 US7587373B2 (en) 2005-06-24 2005-11-09 Neural network based well log synthesis with reduced usage of radioisotopic sources
US11/270,284 2005-11-09

Publications (3)

Publication Number Publication Date
WO2007002693A2 WO2007002693A2 (en) 2007-01-04
WO2007002693A8 WO2007002693A8 (en) 2007-03-22
WO2007002693A3 true WO2007002693A3 (en) 2007-05-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/025029 WO2007002693A2 (en) 2005-06-24 2006-06-26 Well logging with reduced usage of radioisotopic sources

Country Status (6)

Country Link
US (1) US7587373B2 (en)
AU (1) AU2006261707B2 (en)
BR (1) BRPI0611579A2 (en)
CA (1) CA2604738C (en)
GB (1) GB2441463B (en)
WO (1) WO2007002693A2 (en)

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Also Published As

Publication number Publication date
GB0723890D0 (en) 2008-01-23
GB2441463A (en) 2008-03-05
CA2604738C (en) 2011-11-15
US20070011115A1 (en) 2007-01-11
US7587373B2 (en) 2009-09-08
CA2604738A1 (en) 2007-01-04
WO2007002693A8 (en) 2007-03-22
BRPI0611579A2 (en) 2011-02-22
AU2006261707B2 (en) 2010-02-25
GB2441463B (en) 2011-04-20
AU2006261707A1 (en) 2007-01-04
WO2007002693A2 (en) 2007-01-04

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