Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 10 - Drill bits
Patents for E21B 10 - Drill bits (19,464)
03/2014
03/05/2014CN203463016U Three-axle agitator drill suitable for piercing gravel layer soil
03/05/2014CN203463015U Double-mixing drill of cement-soil mixing pile machine
03/05/2014CN203463014U Drillable slim-hole reaming guide cone
03/05/2014CN203463013U Tricone bit
03/05/2014CN203463012U Bit matrix diamond bit steel core used for petroleum drilling
03/05/2014CN203463011U Reamer
03/05/2014CN103615197A Excavation foundation bottom end reaming device
03/05/2014CN102084081B Hydraulic drilling method with penetration control
03/05/2014CN101858199B Soil extrusion amount controllable bidirectional spiral extruding and expanding drill
03/04/2014US8662210 Rotary drill bit including polycrystalline diamond cutting elements
03/04/2014US8662209 Backfilled polycrystalline diamond cutter with high thermal conductivity
03/04/2014US8662208 Downhole cutting tool, cutting elements and method
03/04/2014US8662207 Rotary drag bits including abrasive-impregnated cutting structures
03/04/2014CA2560645C Cutting elements and bits incorporating the same
02/2014
02/27/2014WO2014032006A1 Drill with remotely controlled operating modes and system and method for providing the same
02/27/2014WO2014031263A1 Rolling cutter with close loop retaining ring
02/27/2014WO2014031098A1 Slow drilling assembly and method
02/27/2014US20140054095 Highly wear resistant diamond insert with improved transition structure
02/27/2014US20140054094 Rolling cutter with close loop retaining ring
02/27/2014US20140054092 Rotary jet bit for jet drilling and cleaning
02/27/2014US20140054027 Coarse hard-metal particle internal injection torch and associated compositions, systems, and methods
02/26/2014EP2699753A1 Selectively leached cutter
02/26/2014EP2699752A2 Methods for forming polycrystalline materials including providing material with superabrasive grains prior to hpht processing, and polycrystalline compacts and cutting elements formed by such methods
02/26/2014CN203452674U Chambering drill rod
02/26/2014CN203452654U Diamond compound cutting tool
02/26/2014CN203452653U Open-type drilling bucket and rotary drilling rig
02/26/2014CN203452652U PDC (polycrystalline diamond compact) drilling bit
02/26/2014CN203452651U Strong cone PDC (Polycrystalline Diamond Compact) vibration reduction acceleration drill bit
02/26/2014CN203452650U Anchor rod drill
02/26/2014CN203452649U Drill bit with multi-group teeth
02/26/2014CN203452648U Novel anchor rod drill
02/26/2014CN203452647U Drill bit capable of vitrifying well wall
02/26/2014CN203452646U Rotary excavating drilling bucket and rotary drilling rig using drilling bucket
02/26/2014CN203452644U Well drilling device combining heat energy and mechanical energy
02/26/2014CN103608544A Selectively leached cutter
02/26/2014CN103608543A Non-magnetic hardfacing material
02/26/2014CN103603625A Casing coring drill and casing coring drilling method
02/26/2014CN103603605A Balling-resistant PDC (polycrystalline diamond compact) drill bit with communicated pits in surfaces of flow channels
02/26/2014CN103603604A Balling-resistant PDC (polycrystalline diamond compact) drill bit with pits in surfaces of flow passages
02/26/2014CN103603603A Combined tool for drilling machine
02/26/2014CN103603602A Variable diameter drill by varying pushing force
02/26/2014CN102536124B Single-roller bit with PDC (polycrystalline diamond compact) composite plates
02/26/2014CN102444104B Special tool and construction method for undamaged drilling of bottom plates of caissons
02/25/2014US8657183 Method of bonding poly-crystalline diamonds to wear surfaces
02/25/2014US8657040 Percussion drilling assembly and locking system therefor
02/25/2014US8657039 Restriction element trap for use with an actuation element of a downhole apparatus and method of use
02/25/2014US8657038 Expandable reamer apparatus including stabilizers
02/25/2014US8657033 Grinder
02/25/2014CA2723505C Drilling and hole enlargement device
02/25/2014CA2723064C Drilling and hole enlargement device
02/25/2014CA2630223C Acid tunneling bottom hole assembly
02/20/2014WO2014028686A1 Method for forming instrumented cutting elements of an earth-boring drilling tool
02/20/2014WO2014028685A1 Apparatuses and methods for obtaining at-bit measurements for an earth boring drilling tool
02/20/2014WO2014028457A1 Reamer with improved performance characteristics in hard and abrasive formations
02/20/2014WO2014028220A1 Slickline or wireline run hydraulic motor driven mill
02/20/2014WO2014028152A1 Downhole cutting tools having hybrid cutting structures
02/20/2014WO2014027819A1 Hammer bit and ground perforation method using same
02/20/2014WO2013092346A3 Super-hard tip for a pick tool and pick tool comprising same
02/20/2014US20140048341 Cutting elements including adhesion materials, earth-boring tools including such cutting elements, and related methods
02/20/2014US20140048340 Cutting elements for earth-boring tools, earth-boring tools including such cutting elements and related methods
02/20/2014US20140048339 Cutting elements for earth-boring tools, earth-boring tools including such cutting elements and related methods
02/20/2014US20140048338 Methods of forming and treating polycrystalline diamond cutting elements, cutting elements so formed and drill bits equipped
02/20/2014US20140048337 Minimizing stick-slip while drilling
02/20/2014US20140048336 Reamer with improved performance characteristics in hard and abrasive formations
02/20/2014US20140048335 Reamer with improved performance characteristics in hard and abrasive formations
02/19/2014EP2697012A1 Rock drill
02/19/2014CN203441375U Improved petroleum and gas well drill bit
02/19/2014CN203441374U Cylindrical hard alloy matrix for polycrystalline diamond compact
02/19/2014CN203441373U Petroleum and gas well drilling bit
02/19/2014CN203441372U Diamond composite tooth down-the-hole drill bit
02/19/2014CN203441371U Star bit
02/19/2014CN203441370U Pile work drilling head
02/19/2014CN203441369U Roller bit with full-floating shaft sleeve super-speed rolling oil storage sealing bearing
02/19/2014CN203441368U Linear drilling bit
02/19/2014CN203441360U Rotary drill with compressed gas injection rate controllable
02/19/2014CN203441359U Rotary drill rig used for spray-cooling drill bit
02/19/2014CN103597162A High diamond frame strength PCD materials
02/19/2014CN103590749A Drilling bucket and rotary drilling rig
02/19/2014CN103590748A Multifunctional water jet nozzle and using method thereof
02/19/2014CN102644439B Rotating drilling rig enabling soil-discharging push plate to be automatically reset and construction method thereof
02/19/2014CN102477845B Method for drilling horizontal well with super-short radius
02/19/2014CN102223973B A polycrystalline diamond composite compact element, tools incorporating same and method for making same
02/18/2014US8651204 Metal-free supported polycrystalline diamond and method to form
02/18/2014US8651203 Polycrystalline compacts including metallic alloy compositions in interstitial spaces between grains of hard material, cutting elements and earth-boring tools including such polycrystalline compacts, and related methods
02/18/2014CA2648181C Modular fixed cutter earth-boring bits, modular fixed cutter earth-boring bit bodies, and related methods
02/13/2014WO2014025763A2 Well bore casing mill with expandable cutter bases
02/13/2014US20140041948 Cutting elements having cutting edges with continuous varying radii and bits incorporating the same
02/13/2014US20140041947 Rotational drill bits and drilling apparatuses including the same
02/12/2014EP2694768A2 Apparatus for controlling drill bit depth of cut using thermally expandable materials
02/12/2014EP2694767A1 Method and apparatus for reaming well bore surfaces nearer the center of drift
02/12/2014CN203430427U Steel body PDC bit
02/12/2014CN203430419U 螺旋钻机 Auger
02/12/2014CN103582737A Coating on PDC/TSP cutter for accelerated leaching
02/12/2014CN103573188A Abrasion drill bit device for processing uneven geology
02/12/2014CN103573187A Shock absorption drilling bucket and rotary drilling rig
02/12/2014CN103573186A Drill bit of rotary drilling rig
02/12/2014CN103573185A Drilling bit with radiating hole in center of bottom part
02/12/2014CN102561950B Process for realizing grouting consolidation for aggregates filled in cavities of strata and jetting drill bit
02/11/2014US8646548 Apparatus and system to allow tool passage ahead of a bit
02/11/2014CA2746501C Hybrid drill bit with secondary backup cutters positioned with high side rake angles
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