Assignee
NAT OILWELL DHT LP
US·59 granted patents·12 pending applications·241 citations·filing 2004–2022
Top patents by PatentIndex Score
71 records- 0194US10240399B2Downhole drill bit cutting element with chamfered ridgeNAT OILWELL DHT LP·Filed 2015·Granted Mar 26, 2019·14 cites·22 claims
- 0290US10753157B2Downhole drill bit cutting element with chamfered ridgeNAT OILWELL DHT LP·Filed 2019·Granted Aug 25, 2020·6 cites·29 claims
- 0389US11208849B2Drill bit cutter elements and drill bits including sameNAT OILWELL DHT LP·Filed 2019·Granted Dec 28, 2021·6 cites·19 claims
- 0488US9732573B2Downhole activation assembly with offset bore and method of using sameNAT OILWELL DHT LP·Filed 2015·Granted Aug 15, 2017·6 cites·28 claims
- 0587US10801268B2Downhole drill bit with balanced cutting elements and method for making and using sameNAT OILWELL DHT LP·Filed 2016·Granted Oct 13, 2020·7 cites·22 claims
- 0687US10358872B2Drilling tool with non-synchronous oscillators and method of using sameNAT OILWELL DHT LP·Filed 2018·Granted Jul 23, 2019·8 cites·24 claims
- 0786US10988988B2Drilling systems and hybrid drill bits for drilling in a subterranean formation and methods relating theretoNAT OILWELL DHT LP·Filed 2020·Granted Apr 27, 2021·2 cites·16 claims
- 0885US10337251B2Downhole adjustable bend assembliesNAT OILWELL DHT LP·Filed 2018·Granted Jul 2, 2019·3 cites·56 claims
- 0985US7464765B2Inner guide seal assembly and method for a ram type BOP systemNAT OILWELL DHT LP·Filed 2005·Granted Dec 16, 2008·35 cites·20 claims
- 1082US11149498B2Wired downhole adjustable mud motorsNAT OILWELL DHT LP·Filed 2019·Granted Oct 19, 2021·2 cites·25 claims
- 1182US11002099B2Valves for actuating downhole shock tools in connection with concentric drive systemsNAT OILWELL DHT LP·Filed 2018·Granted May 11, 2021·4 cites·47 claims
- 1280US10954722B2Fixed cutter drill bits including nozzles with end and side exitsNAT OILWELL DHT LP·Filed 2017·Granted Mar 23, 2021·3 cites·25 claims
- 1379US11220866B2Drilling oscillation systems and shock tools for sameNAT OILWELL DHT LP·Filed 2017·Granted Jan 11, 2022·4 cites·15 claims
- 1479US9441422B2Cutting insert for a rock drill bitNAT OILWELL DHT LP·Filed 2013·Granted Sep 13, 2016·8 cites·18 claims
- 1579US7523792B2Method and apparatus for shifting speeds in a fluid-actuated motorNAT OILWELL DHT LP·Filed 2005·Granted Apr 28, 2009·28 cites·48 claims
- 1677US9976231B2Fixed cutter drill bit cutter elements including hard cutting tables made from CVD synthetic diamondsNAT OILWELL DHT LP·Filed 2013·Granted May 22, 2018·1 cites·6 claims
- 1776US11598153B2Drill bit cutter elements and drill bits including sameNAT OILWELL DHT LP·Filed 2019·Granted Mar 7, 2023·3 cites·46 claims
- 1874US11208846B2Drilling tool with non-synchronous oscillators and method of using sameNAT OILWELL DHT LP·Filed 2019·Granted Dec 28, 2021·2 cites·17 claims
- 1974US11085258B2Systems, methods, and computer-readable media to monitor and control well site drill cuttings transportNAT OILWELL DHT LP·Filed 2016·Granted Aug 10, 2021·4 cites·20 claims
- 2074US9752411B2Downhole activation assembly with sleeve valve and method of using sameNAT OILWELL DHT LP·Filed 2014·Granted Sep 5, 2017·4 cites·23 claims
- 2174US7243713B2Shear/seal ram assembly for a ram-type blowout prevention systemNAT OILWELL DHT LP·Filed 2004·Granted Jul 17, 2007·50 cites·24 claims
- 2272US10808462B2Downhole adjustable bend assembliesNAT OILWELL DHT LP·Filed 2019·Granted Oct 20, 2020·1 cites·22 claims
- 2370US9771790B2Downhole measurement assembly, tool and methodNAT OILWELL DHT LP·Filed 2013·Granted Sep 26, 2017·6 cites·28 claims
- 2468US10000970B2Downhole drilling assembly with motor powered hammer and method of using sameNAT OILWELL DHT LP·Filed 2013·Granted Jun 19, 2018·3 cites·30 claims
- 2566US11225835B2Downhole adjustable bend assembliesNAT OILWELL DHT LP·Filed 2020·Granted Jan 18, 2022·0 cites·20 claims
- 2666US10890683B2Wellsite sensor assembly and method of using sameNAT OILWELL DHT LP·Filed 2017·Granted Jan 12, 2021·1 cites·20 claims
- 2766US10704330B2Drilling systems and hybrid drill bits for drilling in a subterranean formation and methods relating theretoNAT OILWELL DHT LP·Filed 2014·Granted Jul 7, 2020·2 cites·22 claims
- 2866US2019136374A1Cutter Elements for Drill Bits and Methods for Fabricating SameNAT OILWELL DHT LP·Filed 2019·Application pending·0 cites
- 2965US11220869B2Drill bit inserts and drill bits including sameNAT OILWELL DHT LP·Filed 2018·Granted Jan 11, 2022·1 cites·24 claims
- 3064US9909395B2Wellsite hardfacing with distributed hard phase and method of using sameNAT OILWELL DHT LP·Filed 2015·Granted Mar 6, 2018·1 cites·26 claims
- 3164US9435168B2Downhole activation assembly and method of using sameNAT OILWELL DHT LP·Filed 2014·Granted Sep 6, 2016·2 cites·20 claims
- 3263US10214812B2Cutter elements for drill bits and methods for fabricating sameNAT OILWELL DHT LP·Filed 2016·Granted Feb 26, 2019·0 cites·19 claims
- 3362US10906104B2Systems and methods of fabrication and use of wear-resistant materialsNAT OILWELL DHT LP·Filed 2017·Granted Feb 2, 2021·0 cites·8 claims
- 3461US11788361B2Drill bit cutter elements and drill bits including sameNAT OILWELL DHT LP·Filed 2021·Granted Oct 17, 2023·0 cites·17 claims
- 3560US9249628B2Hybrid rolling cone drill bits and methods for manufacturing sameNAT OILWELL DHT LP·Filed 2012·Granted Feb 2, 2016·2 cites·22 claims
- 3660US7665927B2Bearing assembly for swivel jointNAT OILWELL DHT LP·Filed 2005·Granted Feb 23, 2010·4 cites·17 claims
- 3759US11377911B2Fixed cutter drill bits including nozzles with end and side exitsNAT OILWELL DHT LP·Filed 2021·Granted Jul 5, 2022·0 cites·18 claims
- 3859US9604345B2Hard-facing for downhole tools and matrix bit bodies with enhanced wear resistance and fracture toughnessNAT OILWELL DHT LP·Filed 2013·Granted Mar 28, 2017·0 cites·36 claims
- 3957US9410379B2Downhole cutting toolNAT OILWELL DHT LP·Filed 2012·Granted Aug 9, 2016·2 cites·19 claims
- 4057US2020149353A1Polycrystalline Diamond Cutting ElementNAT OILWELL DHT LP·Filed 2020·Application pending·0 cites
- 4156US9631435B2Matrix fixed cutter drill bits and methods for manufacturing sameNAT OILWELL DHT LP·Filed 2013·Granted Apr 25, 2017·1 cites·8 claims
- 4256US7427091B2Spear head overshot for use in a cable guided fishing assemblyNAT OILWELL DHT LP·Filed 2005·Granted Sep 23, 2008·6 cites·17 claims
- 4355US10787737B2Downhole drill bit with coated cutting elementNAT OILWELL DHT LP·Filed 2016·Granted Sep 29, 2020·0 cites·20 claims
- 4455US10570667B2Polycrystalline diamond cutting elementNAT OILWELL DHT LP·Filed 2014·Granted Feb 25, 2020·0 cites·15 claims
- 4555US9695641B2Drilling systems and fixed cutter bits with adjustable depth-of-cut to control torque-on-bitNAT OILWELL DHT LP·Filed 2013·Granted Jul 4, 2017·1 cites·17 claims
- 4654US10577874B2Casing drilling apparatus and systemNAT OILWELL DHT LP·Filed 2017·Granted Mar 3, 2020·1 cites·5 claims
- 4754US9574407B2Drilling systems and multi-faced drill bit assembliesNAT OILWELL DHT LP·Filed 2014·Granted Feb 21, 2017·2 cites·18 claims
- 4851US9140071B2Apparatus and method for retaining inserts of a rolling cone drill bitNAT OILWELL DHT LP·Filed 2012·Granted Sep 22, 2015·1 cites·23 claims
- 4950US9593547B2Downhole shock assembly and method of using sameNAT OILWELL DHT LP·Filed 2013·Granted Mar 14, 2017·2 cites·21 claims
- 5049US11629557B2Hybrid bearing assemblies for downhole motorsNAT OILWELL DHT LP·Filed 2019·Granted Apr 18, 2023·0 cites·30 claims
Showing the top 50 of 71 patent records by PatentIndex Score.
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