Assignee
WESTERN WELL TOOL INC
US·46 granted patents·5 pending applications·2,958 citations·filing 1996–2009
Technology mixE21B51
Top patents by PatentIndex Score
51 records- 0197US7174974B2Electrically sequenced tractorWESTERN WELL TOOL INC·Filed 2006·Granted Feb 13, 2007·56 cites·16 claims
- 0297US7080701B2Electrically sequenced tractorWESTERN WELL TOOL INC·Filed 2005·Granted Jul 25, 2006·70 cites·16 claims
- 0397US6347674B1Electrically sequenced tractorWESTERN WELL TOOL INC·Filed 1999·Granted Feb 19, 2002·177 cites·78 claims
- 0496US7185716B2Electrically sequenced tractorWESTERN WELL TOOL INC·Filed 2006·Granted Mar 6, 2007·48 cites·13 claims
- 0595US7392859B2Roller link toggle gripper and downhole tractorWESTERN WELL TOOL INC·Filed 2005·Granted Jul 1, 2008·60 cites·43 claims
- 0695US7353886B2Tractor with improved valve systemWESTERN WELL TOOL INC·Filed 2007·Granted Apr 8, 2008·45 cites·17 claims
- 0795US7191829B2Gripper assembly for downhole toolsWESTERN WELL TOOL INC·Filed 2006·Granted Mar 20, 2007·37 cites·25 claims
- 0894US7275593B2Gripper assembly for downhole toolsWESTERN WELL TOOL INC·Filed 2006·Granted Oct 2, 2007·34 cites·18 claims
- 0994US7188681B2Tractor with improved valve systemWESTERN WELL TOOL INC·Filed 2006·Granted Mar 13, 2007·42 cites·20 claims
- 1094US7156181B2Puller-thruster downhole toolWESTERN WELL TOOL INC·Filed 2006·Granted Jan 2, 2007·36 cites·24 claims
- 1194US7048047B2Gripper assembly for downhole toolsWESTERN WELL TOOL INC·Filed 2003·Granted May 23, 2006·74 cites·26 claims
- 1294US6758279B2Puller-thruster downhole toolWESTERN WELL TOOL INC·Filed 2003·Granted Jul 6, 2004·89 cites·14 claims
- 1394US6640894B2Gripper assembly for downhole toolsWESTERN WELL TOOL INC·Filed 2002·Granted Nov 4, 2003·77 cites·41 claims
- 1494US6467557B1Long reach rotary drilling assemblyWESTERN WELL TOOL INC·Filed 2000·Granted Oct 22, 2002·156 cites·48 claims
- 1594US6464003B2Gripper assembly for downhole tractorsWESTERN WELL TOOL INC·Filed 2001·Granted Oct 15, 2002·85 cites·42 claims
- 1693US7493967B2Tractor with improved valve systemWESTERN WELL TOOL INC·Filed 2008·Granted Feb 24, 2009·41 cites·12 claims
- 1793US6679341B2Tractor with improved valve systemWESTERN WELL TOOL INC·Filed 2001·Granted Jan 20, 2004·95 cites·134 claims
- 1893US6478097B2Electrically sequenced tractorWESTERN WELL TOOL INC·Filed 2001·Granted Nov 12, 2002·79 cites·8 claims
- 1993US6378633B1Drill pipe protector assemblyWESTERN WELL TOOL INC·Filed 2001·Granted Apr 30, 2002·120 cites·8 claims
- 2092US7604060B2Gripper assembly for downhole toolsWESTERN WELL TOOL INC·Filed 2007·Granted Oct 20, 2009·24 cites·23 claims
- 2192US7343982B2Tractor with improved valve systemWESTERN WELL TOOL INC·Filed 2006·Granted Mar 18, 2008·35 cites·23 claims
- 2292US6003606APuller-thruster downhole toolWESTERN WELL TOOL INC·Filed 1996·Granted Dec 21, 1999·184 cites·93 claims
- 2391US7607495B2Tractor with improved valve systemWESTERN WELL TOOL INC·Filed 2008·Granted Oct 27, 2009·28 cites·27 claims
- 2491US7607497B2Roller link toggle gripper and downhole tractorWESTERN WELL TOOL INC·Filed 2008·Granted Oct 27, 2009·37 cites·12 claims
- 2591US7080700B2Tractor with improved valve systemWESTERN WELL TOOL INC·Filed 2004·Granted Jul 25, 2006·69 cites·34 claims
- 2691US6601652B1Puller-thruster downhole toolWESTERN WELL TOOL INC·Filed 2001·Granted Aug 5, 2003·69 cites·75 claims
- 2790US5803193ADrill pipe/casing protector assemblyWESTERN WELL TOOL INC·Filed 1996·Granted Sep 8, 1998·162 cites·38 claims
- 2889US7059417B2Puller-thruster downhole toolWESTERN WELL TOOL INC·Filed 2004·Granted Jun 13, 2006·57 cites·36 claims
- 2989US6745854B2Electrically sequenced tractorWESTERN WELL TOOL INC·Filed 2002·Granted Jun 8, 2004·58 cites·22 claims
- 3089US6241031B1Electro-hydraulically controlled tractorWESTERN WELL TOOL INC·Filed 1999·Granted Jun 5, 2001·115 cites·49 claims
- 3189US6230813B1Method of moving a puller-thruster downhole toolWESTERN WELL TOOL INC·Filed 1998·Granted May 15, 2001·86 cites·19 claims
- 3288US6938708B2Electrically sequenced tractorWESTERN WELL TOOL INC·Filed 2004·Granted Sep 6, 2005·55 cites·16 claims
- 3385US6715559B2Gripper assembly for downhole tractorsWESTERN WELL TOOL INC·Filed 2001·Granted Apr 6, 2004·72 cites·57 claims
- 3485US6427786B2Electro-hydraulically controlled tractorWESTERN WELL TOOL INC·Filed 2001·Granted Aug 6, 2002·64 cites·7 claims
- 3583US6286592B1Puller-thruster downhole toolWESTERN WELL TOOL INC·Filed 1998·Granted Sep 11, 2001·63 cites·81 claims
- 3682US7624808B2Expandable ramp gripperWESTERN WELL TOOL INC·Filed 2007·Granted Dec 1, 2009·23 cites·27 claims
- 3782US7121364B2Tractor with improved valve systemWESTERN WELL TOOL INC·Filed 2003·Granted Oct 17, 2006·55 cites·12 claims
- 3875US6431291B1Packerfoot with bladder assembly having reduced likelihood of bladder delaminationWESTERN WELL TOOL INC·Filed 2001·Granted Aug 13, 2002·50 cites·37 claims
- 3975US5692563ATubing friction reducerWESTERN WELL TOOL INC·Filed 1996·Granted Dec 2, 1997·70 cites·20 claims
- 4074US6470974B1Three-dimensional steering tool for controlled downhole extended-reach directional drillingWESTERN WELL TOOL INC·Filed 2000·Granted Oct 29, 2002·34 cites·37 claims
- 4169US7854275B2Spring-operated anti-stall toolWESTERN WELL TOOL INC·Filed 2009·Granted Dec 21, 2010·9 cites·20 claims
- 4266US6739415B2Drill pipe protectorWESTERN WELL TOOL INC·Filed 2003·Granted May 25, 2004·28 cites·40 claims
- 4362US6250405B1Drill pipe protector assemblyWESTERN WELL TOOL INC·Filed 1999·Granted Jun 26, 2001·35 cites·12 claims
- 4459US6367366B1Sensor assemblyWESTERN WELL TOOL INC·Filed 2000·Granted Apr 9, 2002·24 cites·21 claims
- 4558US7055631B2Drill pipe protectorWESTERN WELL TOOL INC·Filed 2004·Granted Jun 6, 2006·19 cites·19 claims
- 4654US6708783B2Three-dimensional steering tool for controlled downhole extended-reach directional drillingWESTERN WELL TOOL INC·Filed 2002·Granted Mar 23, 2004·12 cites·21 claims
- 4746US2010108387A1Tractor with improved valve systemWESTERN WELL TOOL INC·Filed 2009·Application pending·0 cites
- 4845US2010038138A1Tractor with improved valve systemWESTERN WELL TOOL INC·Filed 2009·Application pending·0 cites
- 4938US2008053703A1Downhole tool with turbine-powered pumpWESTERN WELL TOOL INC·Filed 2006·Application pending·0 cites
- 5038US2008053663A1Downhole tool with turbine-powered motorWESTERN WELL TOOL INC·Filed 2006·Application pending·0 cites
Showing the top 50 of 51 patent records by PatentIndex Score.
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