Inventor · disambiguated record
Kai Hsu
Also filed as: HSU KAI · HSU KAI-TI
72 granted patents·4 pending applications·1,048 citations·filing 1983–2023
99Inventor score
Top patents by PatentIndex Score
76 records- 0196US8024125B2Methods and apparatus to monitor contamination levels in a formation fluidSCHLUMBERGER TECHNOLOGY CORP·Filed 2009·Granted Sep 20, 2011·37 cites·20 claims
- 0294US7913556B2Methods and apparatus to determine the compressibility of a fluidSCHLUMBERGER TECHNOLOGY CORP·Filed 2008·Granted Mar 29, 2011·29 cites·20 claims
- 0393US7305306B2System and methods of deriving fluid properties of downhole fluids and uncertainty thereofSCHLUMBERGER TECHNOLOGY CORP·Filed 2005·Granted Dec 4, 2007·52 cites·21 claims
- 0492US7526953B2Methods and apparatus for the downhole characterization of formation fluidsSCHLUMBERGER TECHNOLOGY CORP·Filed 2006·Granted May 5, 2009·70 cites·20 claims
- 0591US7805247B2System and methods for well data compressionSCHLUMBERGER TECHNOLOGY CORP·Filed 2007·Granted Sep 28, 2010·33 cites·33 claims
- 0691US7574898B2Vibrating wire viscosity sensorSCHLUMBERGER TECHNOLOGY CORP·Filed 2007·Granted Aug 18, 2009·29 cites·33 claims
- 0791US7194902B1Apparatus and method for formation evaluationSCHLUMBERGER TECHNOLOGY CORP·Filed 2004·Granted Mar 27, 2007·56 cites·10 claims
- 0890US9453408B2System and method for estimating oil formation volume factor downholeSCHLUMBERGER TECHNOLOGY CORP·Filed 2015·Granted Sep 27, 2016·4 cites·18 claims
- 0990US8434356B2Fluid density from downhole optical measurementsHSU KAI·Filed 2009·Granted May 7, 2013·31 cites·18 claims
- 1090US7711488B2Methods and apparatus to monitor contamination levels in a formation fluidSCHLUMBERGER TECHNOLOGY CORP·Filed 2007·Granted May 4, 2010·13 cites·22 claims
- 1189US5796677AMethod of sonic logging while drilling a borehole traversing an earth formationSCHLUMBERGER TECHNOLOGY CORP·Filed 1994·Granted Aug 18, 1998·85 cites·14 claims
- 1289US4543648AShot to shot processing for measuring a characteristic of earth formations from inside a boreholeSCHLUMBERGER TECHNOLOGY CORP·Filed 1983·Granted Sep 24, 1985·54 cites·44 claims
- 1388US9109434B2System and method for estimating oil formation volume factor downholeSCHLUMBERGER TECHNOLOGY CORP·Filed 2013·Granted Aug 18, 2015·7 cites·16 claims
- 1488US7680600B2Method, system and apparatus for formation tester data processingSCHLUMBERGER TECHNOLOGY CORP·Filed 2007·Granted Mar 16, 2010·19 cites·19 claims
- 1588US7222671B2Apparatus and method for formation evaluationSCHLUMBERGER TECHNOLOGY CORP·Filed 2004·Granted May 29, 2007·46 cites·32 claims
- 1687US8335650B2Methods and apparatus to determine phase-change pressuresHSU KAI·Filed 2009·Granted Dec 18, 2012·11 cites·19 claims
- 1786US9932824B2Compression and transmission of measurements from downhole toolSCHLUMBERGER TECHNOLOGY CORP·Filed 2015·Granted Apr 3, 2018·5 cites·13 claims
- 1886US9733389B2Multi-sensor contamination monitoringSCHLUMBERGER TECHNOLOGY CORP·Filed 2012·Granted Aug 15, 2017·7 cites·20 claims
- 1986US9689256B2Core orientation systems and methodsSCHLUMBERGER TECHNOLOGY CORP·Filed 2012·Granted Jun 27, 2017·13 cites·15 claims
- 2086US9347314B2System and method for quantifying uncertainty of predicted petroleum fluid propertiesSCHLUMBERGER TECHNOLOGY CORP·Filed 2013·Granted May 24, 2016·9 cites·20 claims
- 2185US9115567B2Method and apparatus for determining efficiency of a sampling toolSCHLUMBERGER TECHNOLOGY CORP·Filed 2012·Granted Aug 25, 2015·9 cites·17 claims
- 2284US11808150B2System and method for fluid separationSCHLUMBERGER TECHNOLOGY CORP·Filed 2022·Granted Nov 7, 2023·1 cites·18 claims
- 2382US4870627AMethod and apparatus for detecting and evaluating borehole wall fracturesSCHLUMBERGER TECHNOLOGY CORP·Filed 1984·Granted Sep 26, 1989·41 cites·53 claims
- 2481US8166812B2Vibrating wire viscometersDESROQUES EMMANUEL·Filed 2009·Granted May 1, 2012·11 cites·20 claims
- 2580US7878243B2Method and apparatus for sampling high viscosity formation fluidsSCHLUMBERGER TECHNOLOGY CORP·Filed 2007·Granted Feb 1, 2011·19 cites·15 claims
- 2680US4888740ADifferential energy acoustic measurements of formation characteristicSCHLUMBERGER TECHNOLOGY CORP·Filed 1986·Granted Dec 19, 1989·48 cites·47 claims
- 2778US10241030B2Optical spectrometer and downhole spectrometry methodSCHLUMBERGER TECHNOLOGY CORP·Filed 2012·Granted Mar 26, 2019·4 cites·4 claims
- 2877US9334724B2System and method for operating a pump in a downhole toolSCHLUMBERGER TECHNOLOGY CORP·Filed 2013·Granted May 10, 2016·5 cites·3 claims
- 2976US11384637B2Systems and methods for formation fluid samplingSCHLUMBERGER TECHNOLOGY CORP·Filed 2014·Granted Jul 12, 2022·5 cites·13 claims
- 3076US11333017B2System and method for fluid separationSCHLUMBERGER TECHNOLOGY CORP·Filed 2020·Granted May 17, 2022·1 cites·18 claims
- 3175US12428961B2Terminal modules for downhole formation testing toolsSCHLUMBERGER TECHNOLOGY CORP·Filed 2023·Granted Sep 30, 2025·0 cites·6 claims
- 3275US9243493B2Fluid density from downhole optical measurementsSCHLUMBERGER TECHNOLOGY CORP·Filed 2013·Granted Jan 26, 2016·4 cites·4 claims
- 3375US8136394B2Methods and apparatus for analyzing a downhole fluidHSU KAI·Filed 2009·Granted Mar 20, 2012·4 cites·20 claims
- 3475US6992768B2Optical fluid analysis signal refinementSCHLUMBERGER TECHNOLOGY CORP·Filed 2003·Granted Jan 31, 2006·12 cites·24 claims
- 3574US11408244B2Automation of packer inflationSCHLUMBERGER TECHNOLOGY CORP·Filed 2019·Granted Aug 9, 2022·2 cites·18 claims
- 3674US5274604AMethod for spatially filtering signals representing formation and channel echoes in a borehole environmentSCHLUMBERGER TECHNOLOGY CORP·Filed 1992·Granted Dec 28, 1993·45 cites·27 claims
- 3774US4951266AMethod of filtering sonic well logging dataSCHLUMBERGER TECHNOLOGY CORP·Filed 1989·Granted Aug 21, 1990·36 cites·42 claims
- 3874US4809236AMethod and apparatus for determining the magnitude of components of measurements made from inside a boreholeSCHLUMBERGER TECHNOLOGY CORP·Filed 1986·Granted Feb 28, 1989·37 cites·29 claims
- 3973US10689980B2Downhole characterization of fluid compressibilitySCHLUMBERGER TECHNOLOGY CORP·Filed 2017·Granted Jun 23, 2020·2 cites·16 claims
- 4073US9334729B2Determining fluid composition downhole from optical spectraINDO KENTARO·Filed 2012·Granted May 10, 2016·4 cites·20 claims
- 4172US9169727B2Scattering detection from downhole optical spectraSCHLUMBERGER TECHNOLOGY CORP·Filed 2012·Granted Oct 27, 2015·3 cites·20 claims
- 4272US8060311B2Job monitoring methods and apparatus for logging-while-drilling equipmentRAMSHAW SYLVAIN·Filed 2008·Granted Nov 15, 2011·11 cites·9 claims
- 4370US10794890B2Method of obtaining asphaltene content of crude oilsSCHLUMBERGER TECHNOLOGY CORP·Filed 2013·Granted Oct 6, 2020·2 cites·20 claims
- 4468US10731460B2Determining formation fluid variation with pressureSCHLUMBERGER TECHNOLOGY CORP·Filed 2014·Granted Aug 4, 2020·3 cites·12 claims
- 4568US8788210B2Job monitoring methods and apparatus for logging-while-drilling equipmentSCHLUMBERGER TECHNOLOGY CORP·Filed 2013·Granted Jul 22, 2014·2 cites·18 claims
- 4668US5031155ACompression and reconstruction of sonic dataSCHLUMBERGER TECHNOLOGY CORP·Filed 1990·Granted Jul 9, 1991·38 cites·14 claims
- 4767US11732581B2Terminal modules for downhole formation testing toolsSCHLUMBERGER TECHNOLOGY CORP·Filed 2021·Granted Aug 22, 2023·0 cites·13 claims
- 4866US5047991ALithology identification using sonic dataSCHLUMBERGER TECHNOLOGY CORP·Filed 1990·Granted Sep 10, 1991·37 cites·20 claims
- 4965US8434357B2Clean fluid sample for downhole measurementsHSU KAI·Filed 2009·Granted May 7, 2013·9 cites·22 claims
- 5063US11725474B2Automation of packer inflationSCHLUMBERGER TECHNOLOGY CORP·Filed 2022·Granted Aug 15, 2023·0 cites·17 claims
Showing the top 50 of 76 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →