Assignee
PATHFINDER ENERGY SERVICES INC
US·44 granted patents·2 pending applications·1,373 citations·filing 2002–2007
Top patents by PatentIndex Score
46 records- 0196US7513147B2Piezocomposite transducer for a downhole measurement toolPATHFINDER ENERGY SERVICES INC·Filed 2006·Granted Apr 7, 2009·47 cites·20 claims
- 0296US7436184B2Well logging apparatus for obtaining azimuthally sensitive formation resistivity measurementsPATHFINDER ENERGY SERVICES INC·Filed 2005·Granted Oct 14, 2008·49 cites·27 claims
- 0393US7377333B1Linear position sensor for downhole tools and method of usePATHFINDER ENERGY SERVICES INC·Filed 2007·Granted May 27, 2008·49 cites·40 claims
- 0491US7243719B2Control method for downhole steering toolPATHFINDER ENERGY SERVICES INC·Filed 2004·Granted Jul 17, 2007·112 cites·34 claims
- 0590US7222681B2Programming method for controlling a downhole steering toolPATHFINDER ENERGY SERVICES INC·Filed 2005·Granted May 29, 2007·41 cites·31 claims
- 0688US7036363B2Acoustic sensor for downhole measurement toolPATHFINDER ENERGY SERVICES INC·Filed 2003·Granted May 2, 2006·88 cites·22 claims
- 0787US7426967B2Rotary steerable tool including drill string rotation measurement apparatusPATHFINDER ENERGY SERVICES INC·Filed 2005·Granted Sep 23, 2008·30 cites·37 claims
- 0886US7385400B2Azimuthally sensitive receiver array for an electromagnetic measurement toolPATHFINDER ENERGY SERVICES INC·Filed 2005·Granted Jun 10, 2008·28 cites·22 claims
- 0986US6985814B2Well twinning techniques in borehole surveyingPATHFINDER ENERGY SERVICES INC·Filed 2003·Granted Jan 10, 2006·62 cites·64 claims
- 1086US6882937B2Downhole referencing techniques in borehole surveyingPATHFINDER ENERGY SERVICES INC·Filed 2003·Granted Apr 19, 2005·62 cites·30 claims
- 1184US7571643B2Apparatus and method for downhole dynamics measurementsPATHFINDER ENERGY SERVICES INC·Filed 2006·Granted Aug 11, 2009·25 cites·25 claims
- 1284US7143521B2Determination of borehole azimuth and the azimuthal dependence of borehole parametersPATHFINDER ENERGY SERVICES INC·Filed 2006·Granted Dec 5, 2006·23 cites·30 claims
- 1383US7327145B2Azimuthally focused electromagnetic measurement toolPATHFINDER ENERGY SERVICES INC·Filed 2005·Granted Feb 5, 2008·23 cites·27 claims
- 1483US7083009B2Pressure controlled fluid sampling apparatus and methodPATHFINDER ENERGY SERVICES INC·Filed 2003·Granted Aug 1, 2006·65 cites·39 claims
- 1583US7074064B2Electrical connector useful in wet environmentsPATHFINDER ENERGY SERVICES INC·Filed 2004·Granted Jul 11, 2006·83 cites·53 claims
- 1683US7027926B2Enhanced measurement of azimuthal dependence of subterranean parametersPATHFINDER ENERGY SERVICES INC·Filed 2004·Granted Apr 11, 2006·45 cites·38 claims
- 1782US7464770B2Closed-loop control of hydraulic pressure in a downhole steering toolPATHFINDER ENERGY SERVICES INC·Filed 2006·Granted Dec 16, 2008·23 cites·25 claims
- 1880US7204325B2Spring mechanism for downhole steering tool bladesPATHFINDER ENERGY SERVICES INC·Filed 2005·Granted Apr 17, 2007·20 cites·21 claims
- 1979US7383897B2Downhole steering tool having a non-rotating bendable sectionPATHFINDER ENERGY SERVICES INC·Filed 2005·Granted Jun 10, 2008·18 cites·36 claims
- 2079US6995500B2Composite backing layer for a downhole acoustic sensorPATHFINDER ENERGY SERVICES INC·Filed 2003·Granted Feb 7, 2006·31 cites·27 claims
- 2177US7414405B2Measurement tool for obtaining tool face on a rotating drill collarPATHFINDER ENERGY SERVICES INC·Filed 2005·Granted Aug 19, 2008·17 cites·32 claims
- 2277US7403857B2Enhanced measurement of azimuthal dependence of subterranean parameters with filters and/or discretely sampled dataPATHFINDER ENERGY SERVICES INC·Filed 2006·Granted Jul 22, 2008·12 cites·26 claims
- 2377US7243740B2Filter assembly having a bypass passageway and methodPATHFINDER ENERGY SERVICES INC·Filed 2004·Granted Jul 17, 2007·25 cites·44 claims
- 2477US7002484B2Supplemental referencing techniques in borehole surveyingPATHFINDER ENERGY SERVICES INC·Filed 2003·Granted Feb 21, 2006·39 cites·48 claims
- 2576US7075215B2Matching layer assembly for a downhole acoustic sensorPATHFINDER ENERGY SERVICES INC·Filed 2003·Granted Jul 11, 2006·35 cites·47 claims
- 2675US6761232B2Sprung member and actuator for downhole toolsPATHFINDER ENERGY SERVICES INC·Filed 2002·Granted Jul 13, 2004·45 cites·38 claims
- 2774US7003401B2Adjustment for frequency dispersion effects in electromagnetic logging dataPATHFINDER ENERGY SERVICES INC·Filed 2005·Granted Feb 21, 2006·12 cites·12 claims
- 2873US7104345B2Downhole rotatable-shaft connector assembly and methodPATHFINDER ENERGY SERVICES INC·Filed 2004·Granted Sep 12, 2006·18 cites·34 claims
- 2971US7482812B2Series-resonant tuning of an LWD receiverPATHFINDER ENERGY SERVICES INC·Filed 2006·Granted Jan 27, 2009·8 cites·6 claims
- 3071US7245229B2Drill string rotation encodingPATHFINDER ENERGY SERVICES INC·Filed 2004·Granted Jul 17, 2007·41 cites·44 claims
- 3168US6937023B2Passive ranging techniques in borehole surveyingPATHFINDER ENERGY SERVICES INC·Filed 2003·Granted Aug 30, 2005·28 cites·47 claims
- 3267US7171310B2Method of estimating electrical parameters of an earth formation with a simplified measurement device modelPATHFINDER ENERGY SERVICES INC·Filed 2003·Granted Jan 30, 2007·22 cites·45 claims
- 3366US7489591B2Drilling fluid pressure pulse detection using a differential transducerPATHFINDER ENERGY SERVICES INC·Filed 2006·Granted Feb 10, 2009·9 cites·17 claims
- 3464US7260479B2Method for locating casing joints using measurement while drilling toolPATHFINDER ENERGY SERVICES INC·Filed 2006·Granted Aug 21, 2007·8 cites·26 claims
- 3563US7260477B2Estimation of borehole geometry parameters and lateral tool displacementsPATHFINDER ENERGY SERVICES INC·Filed 2004·Granted Aug 21, 2007·27 cites·31 claims
- 3663US7103982B2Determination of borehole azimuth and the azimuthal dependence of borehole parametersPATHFINDER ENERGY SERVICES INC·Filed 2004·Granted Sep 12, 2006·23 cites·28 claims
- 3761US7089118B2Shear wave velocity determination using circumferentially aligned transmitter and receiver elementsPATHFINDER ENERGY SERVICES INC·Filed 2005·Granted Aug 8, 2006·5 cites·20 claims
- 3861US7009363B2Optimized battery life in multiple battery applicationsPATHFINDER ENERGY SERVICES INC·Filed 2003·Granted Mar 7, 2006·18 cites·23 claims
- 3958US7039524B2Shear wave velocity determination using multi-pole wavePATHFINDER ENERGY SERVICES INC·Filed 2004·Granted May 2, 2006·14 cites·32 claims
- 4058US6591195B2Method of and apparatus for independently determining the resistivity and/or dielectric constant of an earth formationPATHFINDER ENERGY SERVICES INC·Filed 2002·Granted Jul 8, 2003·16 cites·44 claims
- 4152US7388379B2Series-resonant tuning of a downhole loop antennaPATHFINDER ENERGY SERVICES INC·Filed 2003·Granted Jun 17, 2008·10 cites·18 claims
- 4247US6892137B2Adjustment for frequency dispersion effects in electromagnetic logging dataPATHFINDER ENERGY SERVICES INC·Filed 2003·Granted May 10, 2005·7 cites·25 claims
- 4341US7363159B2Method of determining resistivity and/or dielectric values of an earth formation as a function of position within the earth formationPATHFINDER ENERGY SERVICES INC·Filed 2002·Granted Apr 22, 2008·5 cites·42 claims
- 4437US2007223822A1Data compression method used in downhole applicationsPATHFINDER ENERGY SERVICES INC·Filed 2006·Application pending·0 cites
- 4536US2005028974A1Apparatus for obtaining high quality formation fluid samplesPATHFINDER ENERGY SERVICES INC·Filed 2004·Application pending·0 cites
- 4627US6894274B2Estimation of formation porosity using water measurementPATHFINDER ENERGY SERVICES INC·Filed 2002·Granted May 17, 2005·5 cites·40 claims
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