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)
12/2013
12/03/2013US8596381 Sensor on a formation engaging member of a drill bit
12/03/2013CA2594037C Impregnated material with variable erosion properties for rock drilling and the method to manufacture
12/03/2013CA2594012C Method of selecting drill bits
11/2013
11/28/2013WO2013177278A1 Cutting elements for earth-boring tools, earth-boring tools including such cutting elements, and related methods
11/28/2013WO2013176664A1 System and method for improving stability of drilling tools
11/28/2013WO2013176417A1 Earth boring machine
11/28/2013US20130316149 Forming objects by infiltrating a printed matrix
11/28/2013US20130313027 Polycrystalline diamond compact
11/28/2013US20130313026 Drill bits with axially-tapered waterways
11/28/2013US20130313021 Hybrid Drill Bits Having Increased Drilling Efficiency
11/27/2013EP2666911A1 Method for producing a floor mortar wall in the floor
11/27/2013EP2665886A2 Polycrystalline compacts having differing regions therein, cutting elements and earth-boring tools including such compacts, and methods of forming such compacts
11/27/2013EP2665885A1 A down-the-hole hammer drill assembly
11/27/2013EP2665884A2 Multi-cycle pipe cutter and related methods
11/27/2013CN203308385U Detachable drilling tool of earth boring machine
11/27/2013CN203308384U Hard alloy brazing sheet for geological mine
11/27/2013CN203308383U Device for amending well wall and improving drill bit gauge protection effect through action of rolling
11/27/2013CN103410448A O-shaped loop and metal ring two-way combined sealed oil storage single-cone bit
11/27/2013CN103410447A Square drill bit of rotary drilling rig
11/27/2013CN103410443A Well drilling method and device combining heat energy and mechanical energy
11/27/2013CN103409677A Preparation method of anchor rod drill bit
11/26/2013US8590646 Impregnated cutting elements with large abrasive cutting media and methods of making and using the same
11/26/2013US8590645 Impregnated drill bits and methods of manufacturing the same
11/26/2013US8590644 Downhole drill bit
11/26/2013US8590643 Polycrystalline diamond structure
11/26/2013US8590642 Percussion hammer bit retention system
11/21/2013WO2013173607A1 Utilization of expandable reamer blades in rigid earth-boring tool bodies
11/21/2013WO2013170788A1 Combination scraping and impacting drill bit
11/21/2013WO2013108051A3 Device for a drainage boring system
11/21/2013US20130306381 Apparatus and method for installing ground anchoring systems
11/21/2013US20130306380 Utilization of expandable reamer blades in rigid earth-boring tool bodies
11/21/2013US20130306375 Drilling tool, apparatus and method for underreaming and simultaneously monitoring and controlling wellbore diameter
11/21/2013US20130305617 Methods of forming a hardfacing composition, methods of hardfacing a downhole tool, and methods of forming an earth-boring bit
11/21/2013DE102007020051B4 Hartmetallplatte für Gesteinsbohrer und Gesteinsbohrer Carbide tip for rock drill and rock drills
11/20/2013EP2664688A1 Earth-boring bit parts including hybrid cemented carbides and methods of making the same
11/20/2013CN203296725U Through type DTH hammer reverse circulation drilling dust collecting device
11/20/2013CN203296702U Self-excited pulse PDC (polycrystalline diamond compact) drill bit
11/20/2013CN203296701U Novel inward-concave drill bit
11/20/2013CN203296700U PDC positive and negative integrated drill bit
11/20/2013CN203296699U Oriented PDC drill bit
11/20/2013CN203296698U Rotary drilling tool and rotary drilling machine for exploration
11/20/2013CN203296697U Down-the-hole hammer
11/20/2013CN203296696U Drilling coring tool for ooze stratum
11/20/2013CN203296695U Deviation proof drilling assembly
11/20/2013CN203296694U Drilling tool for rotary excavation and drilling machine for same
11/20/2013CN203296682U Down-the-hole hammer
11/20/2013CN103397847A Rapid ice layer air drilling reverse-circulation continuous coring drill bit
11/20/2013CN103397846A Drill bit capable of enabling well wall to be ceramic
11/19/2013US8589124 Methods for modeling wear of fixed cutter bits and for designing and optimizing fixed cutter bits
11/19/2013US8584777 Rotational drill bits and drilling apparatuses including the same
11/19/2013US8584776 Methods, systems, and tool assemblies for distributing weight between an earth-boring rotary drill bit and a reamer device
11/19/2013CA2730496C Earth-boring tools and methods of making earth-boring tools including an impact material, and methods of drilling through casing
11/19/2013CA2690403C Process of drill bit manufacture
11/19/2013CA2671061C Core drill bit with extended matrix height
11/14/2013WO2013170083A1 Diamond cutting elements for drill bits seeded with hcp crystalline material
11/14/2013WO2013169819A1 Fixed cutter drill bit with rotating cutter disc
11/14/2013WO2013169663A1 Super-abrasive material with enhanced attachment region and methods for formation and use thereof
11/14/2013WO2013167954A2 A downhole downhole assembly, tool and method
11/14/2013WO2012146626A3 Superhard constructions
11/14/2013US20130299249 Super-abrasive material with enhanced attachment region and methods for formation and use thereof
11/14/2013US20130299248 Adjustable Body Supported Cutter Arms for Underreamer
11/14/2013US20130299245 Downhole tools having activation members for moving movable bodies thereof and methods of using such tools
11/13/2013EP2662523A1 Helical drill bit for an auger of a ground excavation assembly, in particular for building excavated piles, and drilling method that uses such a bit
11/13/2013CN203285344U Diamond composite sheet cutter
11/13/2013CN203285343U Seismic exploration compound drilling drill bit
11/13/2013CN203285342U Inside-closed single-acting rotating type drill bit structure
11/13/2013CN203285341U With-pressure wet drill coring bit
11/13/2013CN203285340U With-pressure drying drill coring bit
11/13/2013CN103392051A Polycrystalline compacts having differing regions therein, cutting elements and earth-boring tools including such compacts, and methods of forming such compacts
11/13/2013CN103392050A Downhole tools
11/13/2013CN103388455A High temperature-resistant drill bit
11/13/2013CN103388454A Bionic drill bit for mining
11/12/2013US8579053 Polycrystalline diamond material with high toughness and high wear resistance
11/12/2013US8579052 Polycrystalline compacts including in-situ nucleated grains, earth-boring tools including such compacts, and methods of forming such compacts and tools
11/12/2013US8579051 Anti-tracking spear points for earth-boring drill bits
11/12/2013US8579050 Reamer with balanced cutting structure for use in a wellbore
11/12/2013US8579048 Drilling device and drilling method
11/12/2013US8579047 Downhole reservoir effluent column pressure restraining apparatus and methods
11/12/2013US8579046 Pressure compensator for drill bit
11/07/2013WO2013166435A1 Oilfield downhole wellbore section mill
11/07/2013WO2013166402A1 Automated method of ultrasonically scanning cutters while on the bit for crack detection
11/07/2013WO2013166398A1 Methods of forming cutting elements by removing metal from interstitial spaces in polycrystalline diamond
11/07/2013WO2013166393A1 Drilling assemblies including expandable reamers and expandable stabilizers, and related methods
11/07/2013WO2013166266A1 Gage cutter protection for drilling bits
11/07/2013WO2013166087A1 Earth-boring tools having cutting elements with cutting faces exhibiting multiple coefficients of friction, and related methods
11/07/2013US20130294843 Helical drill bit for an auger of a ground excavation assembly, in particular for building excavated piles, and drilling method that uses such a bit
11/07/2013US20130292188 Earth-boring tools having cutting elements with cutting faces exhibiting multiple coefficients of friction, and related methods
11/07/2013US20130292187 Rotary drill bits including bearing blocks
11/07/2013US20130292185 Fixed cutter drill bit with rotating cutter disc
11/07/2013US20130292184 Polycrystalline Diamond Element with Unleached Side Surface and System and Method of Controlling Leaching at the Side Surface of a Polycrystalline Diamond Element
11/07/2013US20130292175 Drilling assemblies including expandable reamers and expandable stabilizers, and related methods
11/07/2013CA2814917A1 Helical drill bit for an auger of a ground excavation assembly, in particular for building excavated piles, and drilling method that uses such a bit
11/06/2013EP2659083A1 Drill bits, cutting elements for drill bits, and drilling apparatuses including the same
11/06/2013CN203271595U PDC drill bit with double-well-bottom coverage
11/06/2013CN203271594U Drill bit for drilling cement plug during petroleum workover treatment
11/06/2013CN203271593U Mechanical three-arm underreamer
11/06/2013CN203271592U Drill bit for expanding base of cast-in-situ bored pile
11/06/2013CN203271581U Perforating machine for drilling holes
11/06/2013CN103382810A Special drill bit for bottom anchor drilling machine
11/06/2013CN102322245B Gas hydrate exploitation device
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