Inventor · disambiguated record
W. Allen Gilchrist
Also filed as: GILCHRIST JR W ALLEN · GILCHRIST W A · GILCHRIST W ALLEN
23 granted patents·1 pending application·156 citations·filing 2003–2018
95Inventor score
Top patents by PatentIndex Score
24 records- 0194US7565833B2Automatic adjustment of NMR pulse sequence to optimize SNR based on real time analysisBAKER HUGHES INC·Filed 2007·Granted Jul 28, 2009·26 cites·11 claims
- 0292US7294829B2Method and apparatus for an improved formation density indicator using pulsed neutron instrumentsBAKER HUGHES INC·Filed 2005·Granted Nov 13, 2007·38 cites·19 claims
- 0389US8471197B2Pulsed neutron based monitoring of CO2 in enhanced recovery and sequestration projectsINANC FEYZI·Filed 2010·Granted Jun 25, 2013·11 cites·20 claims
- 0484US7446308B2Method of calibrating multi-channel nuclear energy spectraBAKER HUGHES INC·Filed 2005·Granted Nov 4, 2008·22 cites·26 claims
- 0583US9261622B2Elemental concentration determination using neutron-induced activation gamma radiationINANC FEYZI·Filed 2011·Granted Feb 16, 2016·4 cites·18 claims
- 0679US8440961B2Gamma ray generatorINANC FEYZI·Filed 2010·Granted May 14, 2013·5 cites·18 claims
- 0779US7301338B2Automatic adjustment of NMR pulse sequence to optimize SNR based on real time analysisBAKER HUGHES INC·Filed 2005·Granted Nov 27, 2007·17 cites·14 claims
- 0876US9086500B2Apparatus and method for pulsed neutron measurementANSARI RAFAY Z·Filed 2011·Granted Jul 21, 2015·6 cites·20 claims
- 0966US10725200B2Water saturation determination using an oxygen estimate and formation lithologyBAKER HUGHES A GE CO LLC·Filed 2018·Granted Jul 28, 2020·0 cites·24 claims
- 1066US10324224B2Elemental concentration determination using neutron-induced activation gamma radiationINANC FEYZI·Filed 2011·Granted Jun 18, 2019·1 cites·15 claims
- 1162US8866475B2Method for correcting NMR and nuclear logs in formate mud filtrate invaded formationsCHEN SONGHUA·Filed 2011·Granted Oct 21, 2014·1 cites·19 claims
- 1260US10324225B2Water saturation determination using an oxygen estimate and formation lithologyBAKER HUGHES INC·Filed 2016·Granted Jun 18, 2019·0 cites·14 claims
- 1360US8436294B2Method for taking gamma-gamma density measurementsINANC FEYZI·Filed 2010·Granted May 7, 2013·1 cites·19 claims
- 1458US8502135B2Method for through-casing 3-phase saturation determinationCHACE DAVID M·Filed 2011·Granted Aug 6, 2013·1 cites·21 claims
- 1558US7893398B2Compensated mineralogy tool and processingBAKER HUGHES INC·Filed 2008·Granted Feb 22, 2011·5 cites·19 claims
- 1654US8604417B2Targetless pulsed neutron generator using beam-beam interactionGILCHRIST W ALLEN·Filed 2012·Granted Dec 10, 2013·1 cites·20 claims
- 1752US7439494B2Method and apparatus for determining the thermal neutron capture cross-section of a subsurface formation from a boreholeBAKER HUGHES INC·Filed 2007·Granted Oct 21, 2008·3 cites·20 claims
- 1849US9360586B2Water saturation determination using an oxygen estimate and formation lithologyCHACE DAVID M·Filed 2011·Granted Jun 7, 2016·0 cites·8 claims
- 1948US7117733B2Dynamic logging speedBAKER HUGHES INC·Filed 2004·Granted Oct 10, 2006·9 cites·21 claims
- 2047US7482579B2Method and apparatus for high resolution gamma ray measurementsBAKER HUGHES INC·Filed 2007·Granted Jan 27, 2009·1 cites·22 claims
- 2146US8481920B2Apparatus and method for determining formation density from nuclear density measurements made using sensors at more than one locationINANC FEYZI·Filed 2011·Granted Jul 9, 2013·0 cites·16 claims
- 2244US8525103B2Method for hydrocarbon saturation and hydraulic frac placementCHACE DAVID M·Filed 2011·Granted Sep 3, 2013·0 cites·22 claims
- 2338US7166834B2Method and apparatus for determining the thermal neutron capture cross-section of a subsurface formation from a boreholeBAKER HUGHES INC·Filed 2003·Granted Jan 23, 2007·4 cites·25 claims
- 2436US2005226098A1Dynamic acoustic logging using a feedback loopBAKER HUGHES INC·Filed 2005·Application pending·0 cites
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