Inventor · disambiguated record
Roger Griffiths
Also filed as: GRIFFITHS ROGER
16 granted patents·3 pending applications·102 citations·filing 2003–2016
92Inventor score
Top patents by PatentIndex Score
19 records- 0188US8521435B2Estimating sigma log beyond the measurements pointsMINH CHANH CAO·Filed 2010·Granted Aug 27, 2013·11 cites·16 claims
- 0273US7966166B2Method for determining a set of net present values to influence the drilling of a wellbore and increase productionSCHLUMBERGER TECHNOLOGY CORP·Filed 2008·Granted Jun 21, 2011·15 cites·41 claims
- 0368US10571600B2Determination of formation properties using graphical methodsSCHLUMBERGER TECHNOLOGY CORP·Filed 2014·Granted Feb 25, 2020·2 cites·20 claims
- 0467US7623968B2Determination of porosity and fluid saturation of underground formationsSCHLUMBERGER TECHNOLOGY CORP·Filed 2006·Granted Nov 24, 2009·9 cites·10 claims
- 0566US10451769B2Method for determining petrophysical properties from logging measurementsSCHLUMBERGER TECHNOLOGY CORP·Filed 2016·Granted Oct 22, 2019·1 cites·20 claims
- 0665US7418865B2Method and apparatus for ultrasound velocity measurements in drilling fluidsSCHLUMBERGER TECHNOLOGY CORP·Filed 2003·Granted Sep 2, 2008·30 cites·11 claims
- 0763US10422221B2Formation evaluation using stochastic analysis of log dataSCHLUMBERGER TECHNOLOGY CORP·Filed 2014·Granted Sep 24, 2019·2 cites·26 claims
- 0855US7432499B2Method and apparatus for detecting while drilling underbalanced the presence and depth of water produced from the formationSCHLUMBERGER TECHNOLOGY CORP·Filed 2004·Granted Oct 7, 2008·13 cites·1 claims
- 0954US9846256B2Interactive display of results obtained from the inversion of logging dataHELIOT DENIS·Filed 2011·Granted Dec 19, 2017·1 cites·20 claims
- 1051US10400594B2Petrophysical relationships using blind source separation techniquesSCHLUMBERGER TECHNOLOGY CORP·Filed 2015·Granted Sep 3, 2019·0 cites·20 claims
- 1149US8143570B2Method and apparatus for detecting while drilling underbalanced the presence and depth of water produced from the formationEDWARDS JOHN·Filed 2008·Granted Mar 27, 2012·1 cites·25 claims
- 1248US9945977B2Method and apparatus for determining formation properties using non-directional electromagnetic measurements in high angle or horizontal wellsSCHLUMBERGER TECHNOLOGY CORP·Filed 2014·Granted Apr 17, 2018·0 cites·18 claims
- 1347US10323498B2Methods, computer-readable media, and systems for applying 1-dimensional (1D) processing in a non-1D formationSCHLUMBERGER TECHNOLOGY CORP·Filed 2014·Granted Jun 18, 2019·0 cites·20 claims
- 1447US2012119076A1Method and Apparatus for Detecting while Drilling Underbalanced The Presence and Depth of Water Produced from The Formation and for Measuring Parameters Related TheretoEDWARDS JOHN·Filed 2012·Application pending·0 cites
- 1543US7523002B2Method and system for cause-effect time lapse analysisSCHLUMBERGER TECHNOLOGY CORP·Filed 2003·Granted Apr 21, 2009·7 cites·13 claims
- 1642US7342222B2Method and apparatus for downhole spectroscopy processingSCHLUMBERGER TECHNOLOGY CORP·Filed 2003·Granted Mar 11, 2008·8 cites·12 claims
- 1739US7669468B2Measuring mud flow velocity using pulsed neutronsSCHLUMBERGER TECHNOLOGY CORP·Filed 2003·Granted Mar 2, 2010·2 cites·19 claims
- 1839US2012192640A1Borehole Imaging and Formation Evaluation While DrillingMINH CHANH CAO·Filed 2011·Application pending·0 cites
- 1932US2010187412A1Sigma measurement downholeGRANT JEFFREY·Filed 2009·Application pending·0 cites
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