Assignee
PREC DRILLING TECH SERV GROUP
US·24 granted patents·2 pending applications·1,481 citations·filing 2000–2004
Top patents by PatentIndex Score
26 records- 0196US6577129B1Well logging system for determining directional resistivity using multiple transmitter-receiver groups focused with magnetic reluctance materialPREC DRILLING TECH SERV GROUP·Filed 2002·Granted Jun 10, 2003·142 cites·20 claims
- 0295US7046584B2Compensated ensemble crystal oscillator for use in a well borehole systemPREC DRILLING TECH SERV GROUP·Filed 2003·Granted May 16, 2006·71 cites·18 claims
- 0395US6646441B2Well logging system for determining resistivity using multiple transmitter-receiver groups operating at three frequenciesPREC DRILLING TECH SERV GROUP·Filed 2002·Granted Nov 11, 2003·122 cites·29 claims
- 0490US7004444B2Rotating blowout preventer with independent cooling circuits and thrust bearingPREC DRILLING TECH SERV GROUP·Filed 2004·Granted Feb 28, 2006·92 cites·2 claims
- 0590US6703837B1Wellbore resistivity tool with simultaneous multiple frequenciesPREC DRILLING TECH SERV GROUP·Filed 2000·Granted Mar 9, 2004·74 cites·26 claims
- 0690US6607042B2Method of dynamically controlling bottom hole circulation pressure in a wellborePREC DRILLING TECH SERV GROUP·Filed 2001·Granted Aug 19, 2003·129 cites·20 claims
- 0790US6571888B2Apparatus and method for directional drilling with coiled tubingPREC DRILLING TECH SERV GROUP·Filed 2001·Granted Jun 3, 2003·121 cites·17 claims
- 0888US7007913B2Rotating blowout preventer with independent cooling circuits and thrust bearingPREC DRILLING TECH SERV GROUP·Filed 2004·Granted Mar 7, 2006·60 cites·9 claims
- 0988US6749172B2Rotating blowout preventer with independent cooling circuits and thrust bearingPREC DRILLING TECH SERV GROUP·Filed 2003·Granted Jun 15, 2004·79 cites·4 claims
- 1088US6566649B1Standoff compensation for nuclear measurementsPREC DRILLING TECH SERV GROUP·Filed 2000·Granted May 20, 2003·67 cites·33 claims
- 1187US6590202B2Standoff compensation for nuclear measurementsPREC DRILLING TECH SERV GROUP·Filed 2001·Granted Jul 8, 2003·61 cites·37 claims
- 1283US6722436B2Apparatus and method for operating an internal combustion engine to reduce free oxygen contained within engine exhaust gasPREC DRILLING TECH SERV GROUP·Filed 2002·Granted Apr 20, 2004·86 cites·14 claims
- 1382US6666285B2Logging-while-drilling apparatus and methods for measuring densityPREC DRILLING TECH SERV GROUP·Filed 2002·Granted Dec 23, 2003·49 cites·30 claims
- 1482US6636159B1Borehole logging apparatus for deep well drillings with a device for transmitting borehole measurement dataPREC DRILLING TECH SERV GROUP·Filed 2000·Granted Oct 21, 2003·68 cites·10 claims
- 1582US6585061B2Calculating directional drilling tool face offsetsPREC DRILLING TECH SERV GROUP·Filed 2001·Granted Jul 1, 2003·67 cites·20 claims
- 1675US6924640B2Oil and gas well tubular inspection system using hall effect sensorsPREC DRILLING TECH SERV GROUP·Filed 2002·Granted Aug 2, 2005·50 cites·28 claims
- 1774US7145473B2Electromagnetic borehole telemetry system incorporating a conductive borehole tubularPREC DRILLING TECH SERV GROUP·Filed 2003·Granted Dec 5, 2006·39 cites·51 claims
- 1873US6966211B2Downhole calibration system for directional sensorsPREC DRILLING TECH SERV GROUP·Filed 2003·Granted Nov 22, 2005·27 cites·29 claims
- 1963US6700115B2Standoff compensation for nuclear measurementsPREC DRILLING TECH SERV GROUP·Filed 2002·Granted Mar 2, 2004·21 cites·24 claims
- 2061US6850463B2Borehole logging apparatus for deep well drillingPREC DRILLING TECH SERV GROUP·Filed 2002·Granted Feb 1, 2005·24 cites·7 claims
- 2152US6662885B2Method and apparatus for providing a stream of pressurized substantially inert gasPREC DRILLING TECH SERV GROUP·Filed 2001·Granted Dec 16, 2003·3 cites·7 claims
- 2250US7151254B2Logging tool with response invariant to changes in borehole pressurePREC DRILLING TECH SERV GROUP·Filed 2004·Granted Dec 19, 2006·9 cites·45 claims
- 2342US6864593B2Device for producing of electric energy and of signal transmitting pressure pulsesPREC DRILLING TECH SERV GROUP·Filed 2003·Granted Mar 8, 2005·9 cites·17 claims
- 2438US6845563B2Method and device for the measurement of the drift of a borcholePREC DRILLING TECH SERV GROUP·Filed 2002·Granted Jan 25, 2005·11 cites·23 claims
- 2538US2004200639A1Process and device for generating signals which can be transmitted in a wellPREC DRILLING TECH SERV GROUP·Filed 2004·Application pending·0 cites
- 2634US2004027917A1Borehole logging apparatus for deep well drilling with a device for transmitting borehole measurement dataPREC DRILLING TECH SERV GROUP·Filed 2003·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →