Inventor · disambiguated record
Bala Durairajan
Also filed as: DURAIRAJAN BALA
26 granted patents·8 pending applications·346 citations·filing 2005–2021
96Inventor score
Top patents by PatentIndex Score
34 records- 0196US10287825B2Cutting elements having non-planar surfaces and downhole cutting tools using such cutting elementsSMITH INTERNATIONAL·Filed 2015·Granted May 14, 2019·18 cites·22 claims
- 0296US8991523B2Rolling cutter assembled directly to the bit pocketsSHEN YUELIN·Filed 2011·Granted Mar 31, 2015·41 cites·43 claims
- 0394US12031384B2Cutting elements having non-planar surfaces and downhole cutting tools using such cutting elementsSCHLUMBERGER TECHNOLOGY CORP·Filed 2021·Granted Jul 9, 2024·3 cites·19 claims
- 0494US11215012B2Cutting elements having non-planar surfaces and downhole cutting tools using such cutting elementsSMITH INTERNATIONAL·Filed 2019·Granted Jan 4, 2022·8 cites·22 claims
- 0593US7441612B2PDC drill bit using optimized side rake angleSMITH INTERNATIONAL·Filed 2006·Granted Oct 28, 2008·28 cites·9 claims
- 0692US7703557B2Fixed cutter bit with backup cutter elements on primary bladesSMITH INTERNATIONAL·Filed 2007·Granted Apr 27, 2010·61 cites·49 claims
- 0791US8887837B2Cutting structures for fixed cutter drill bit and other downhole cutting toolsSMITH INTERNATIONAL·Filed 2013·Granted Nov 18, 2014·10 cites·23 claims
- 0889US8833492B2Cutters for fixed cutter bitsDURAIRAJAN BALA·Filed 2008·Granted Sep 16, 2014·32 cites·19 claims
- 0986US9404312B2Cutting structures for fixed cutter drill bit and other downhole cutting toolsAZAR MICHAEL G·Filed 2012·Granted Aug 2, 2016·7 cites·30 claims
- 1086US9366090B2Kerfing hybrid drill bit and other downhole cutting toolsAZAR MICHAEL G·Filed 2012·Granted Jun 14, 2016·7 cites·24 claims
- 1185US10309156B2Cutting structures for fixed cutter drill bit and other downhole cutting toolsSMITH INTERNATIONAL·Filed 2014·Granted Jun 4, 2019·8 cites·8 claims
- 1285US8783387B2Cutter geometry for high ROP applicationsDURAIRAJAN BALA·Filed 2008·Granted Jul 22, 2014·28 cites·16 claims
- 1384US8112258B2PDC drill bit using optimized side rake angleDURAIRAJAN BALA·Filed 2008·Granted Feb 7, 2012·11 cites·23 claims
- 1484US7831419B2PDC drill bit with cutter design optimized with dynamic centerline analysis having an angular separation in imbalance forces of 180 degrees for maximum timeSMITH INTERNATIONAL·Filed 2005·Granted Nov 9, 2010·22 cites·22 claims
- 1578US8127863B2Drill bit having enhanced stabilization features and method of use thereofDURAIRAJAN BALA·Filed 2008·Granted Mar 6, 2012·18 cites·30 claims
- 1677US8869919B2Drag bit with utility bladesSHEN YUELIN·Filed 2011·Granted Oct 28, 2014·6 cites·23 claims
- 1767US8689908B2Drill bit having enhanced stabilization features and method of use thereofDURAIRAJAN BALA·Filed 2012·Granted Apr 8, 2014·3 cites·20 claims
- 1867US8100202B2Fixed cutter bit with backup cutter elements on secondary bladesDURAIRAJAN BALA·Filed 2009·Granted Jan 24, 2012·11 cites·76 claims
- 1967US7308957B2Fixed-head bit with stabilizing featuresSMITH INTERNATIONAL·Filed 2005·Granted Dec 18, 2007·9 cites·22 claims
- 2061US8061453B2Drill bit with asymmetric gage pad configurationCARIVEAU PETER T·Filed 2007·Granted Nov 22, 2011·7 cites·31 claims
- 2160US9145740B2Stabilizing members for fixed cutter drill bitSMITH INTERNATIONAL·Filed 2013·Granted Sep 29, 2015·1 cites·20 claims
- 2258US8783386B2Stabilizing members for fixed cutter drill bitDURAIRAJAN BALA·Filed 2010·Granted Jul 22, 2014·1 cites·33 claims
- 2355US9617794B2Feature to eliminate shale packing/shale evacuation channelDURAIRAJAN BALA·Filed 2012·Granted Apr 11, 2017·2 cites·29 claims
- 2455US2014367178A1Cutting structures for fixed cutter drill bit and other downhole cutting toolsSMITH INTERNATIONAL·Filed 2014·Application pending·0 cites
- 2552US2015047913A1Cutters for fixed cutter bitsSMITH INTERNATIONAL·Filed 2014·Application pending·0 cites
- 2650US9016407B2Drill bit cutting structure and methods to maximize depth-of-cut for weight on bit appliedDURAIRAJAN BALA·Filed 2008·Granted Apr 28, 2015·2 cites·39 claims
- 2750US2014095134A1Pdc drill bit with cutter design optimized with dynamic centerline analysis and having dynamic centerline trajectorySMITH INTERNATIONAL·Filed 2013·Application pending·0 cites
- 2849US9103170B2Impregnated drill bitDURAIRAJAN BALA·Filed 2008·Granted Aug 11, 2015·2 cites·34 claims
- 2947US10030452B2Cutting structures for fixed cutter drill bit and other downhole cutting toolsSMITH INTERNATIONAL·Filed 2014·Granted Jul 24, 2018·0 cites·24 claims
- 3045US2015047910A1Downhole cutting tools having rolling cutters with non-planar cutting surfacesSMITH INTERNATIONAL·Filed 2014·Application pending·0 cites
- 3144US2014124270A1Pdc bits having rolling cutters and using mixed chamfersSMITH INTERNATIONAL·Filed 2013·Application pending·0 cites
- 3241US2010018780A1Pdc bit having split bladesSMITH INTERNATIONAL·Filed 2009·Application pending·0 cites
- 3339US2007093996A1Formation prioritization optimizationSMITH INTERNATIONAL·Filed 2006·Application pending·0 cites
- 3438US2006162968A1PDC drill bit using optimized side rake distribution that minimized vibration and deviationSMITH INTERNATIONAL·Filed 2005·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →