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)
04/2012
04/05/2012CA2812545A1 Wear resistant material for the shirttail outer surface of a rotary cone drill bit
04/05/2012CA2726751A1 Method of bonding poly-crystalline diamonds to wear surfaces
04/04/2012EP2435654A2 Method and apparatus for drilling large-diameter hole in ground
04/04/2012EP2435638A1 Wear element for earth/rock working operations with enhanced wear resistance
04/04/2012EP2435636A1 Wearing element for ground engaging operations with enhanced wear resistance
04/04/2012EP2142749B1 Bit for drilling wells and associated drilling method
04/04/2012CN202181849U 金刚石硬质合金复合片 Diamond carbide composite sheet
04/04/2012CN202181848U 一种拖动式筛孔护壁钻头 One kind of drag-type drill sieve Wall
04/04/2012CN202181847U Pdc钻、扩双翼组合钻头 Pdc drilling, expanding wings of combination drills
04/04/2012CN202181846U 一种软煤风力排渣护孔钻头 A soft wind coal slag retaining hole drill
04/04/2012CN102400647A Drill
04/04/2012CN102400646A 旋切钻头与牙轮钻头形成的复合钻头 Peeling composite drill bit and the formation of cone bit
04/04/2012CN101560869B 凸顶偏楔齿 Convex top side wedge teeth
04/03/2012US8147790 Methods of fabricating polycrystalline diamond by carbon pumping and polycrystalline diamond products
04/03/2012US8146688 Drill bit with prefabricated cuttings splitter and method of making
04/03/2012US8146687 Polycrystalline diamond compact including at least one thermally-stable polycrystalline diamond body and applications therefor
04/03/2012US8146686 Fiber-containing cutting tools
03/2012
03/29/2012WO2012040570A2 Apparatus and method for drilling wellbores
03/29/2012WO2012039630A1 Hybrid drill bit
03/29/2012WO2012038583A1 Method and apparatus for down-the-hole drilling
03/29/2012WO2012038428A1 A rock drill bit for percussive drilling and a rock drill bit button
03/29/2012WO2012038342A1 A rock drill bit and a drilling assembly for percussive rock drilling
03/29/2012WO2012037597A1 Underground reamer
03/29/2012WO2012019141A3 Shaped cutting elements for earth-boring tools, earth-boring tools including such cutting elements, and related methods
03/29/2012WO2011162999A4 Cutting elements for earth-boring tools, earth-boring tools including such cutting elements, and methods of forming cutting elements for earth-boring tools
03/29/2012WO2011123628A3 Article of manufacture having a sub-surface friction stir welded channel
03/29/2012US20120073881 Rolling cutter
03/29/2012US20120073880 Subterranean Cutting Tool Structure Tailored to Intended Use
03/29/2012US20120073879 Downhole reamer asymmetric cutting structures
03/29/2012US20120073877 Hardpan auger
03/29/2012CA2812600A1 A rock drill bit for percussive drilling and a rock drill bit button
03/29/2012CA2811674A1 A rock drill bit and a drilling assembly for percussive rock drilling
03/29/2012CA2811657A1 Underground reamer
03/28/2012EP2434086A1 A rock drill bit and a drilling assembly for percussive rock drilling
03/28/2012EP2432963A2 Cutting elements, methods for manufacturing such cutting elements, and tools incorporating such cutting elements
03/28/2012EP1618277B1 Downhole tool having radially extendable members
03/28/2012CN202176266U 用于长螺旋钻机钻头上的双导柱锥柄自动开合钻尖门 Dual guide column for long auger drill taper shank on the automatic door opening and closing the drill tip
03/28/2012CN202176265U Pdc钻头 Pdc drill
03/28/2012CN202176264U 一种便于更换滚刀的扩孔器 An easy replacement hob reamer
03/28/2012CN102395749A Device for a downhole apparatus for machining of casings and also a method of depositing machined shavings
03/28/2012CN102395744A Milling cap for a polycrystalline diamond compact cutter
03/28/2012CN102395694A Polycrystalline diamond element
03/28/2012CN102392605A Compound bit formed by PDC (polycrystalline diamond compact) bits and rotary cutting bit
03/28/2012CN102392604A Bearing metal sealing structure
03/28/2012CN102392603A Compound bit formed by rotary cutting bit and PDC (polycrystalline diamond compact) blades
03/28/2012CN101704101B Formula and technique for manufacturing geophysical prospecting bit by powder sintering
03/28/2012CN101319499B Pile forming method and device for screwed pedestal pile with large flow concrete filled by hole drilling pump
03/27/2012US8141665 Drill bits with bearing elements for reducing exposure of cutters
03/27/2012US8141664 Hybrid drill bit with high bearing pin angles
03/27/2012US8141662 Downhole lubrication system
03/27/2012US8141656 Apparatuses and methods relating to cooling a subterranean drill bit and/or at least one cutting element during use
03/22/2012WO2012036849A2 Impregnated drill bits with integrated reamers
03/22/2012US20120067652 High Toughness Thermally Stable Polycrystalline Diamond
03/22/2012US20120067651 Hardfacing compositions, methods of applying the hardfacing compositions, and tools using such hardfacing compositions
03/22/2012CA2808594A1 Impregnated drill bits with integrated reamers
03/21/2012EP2430280A2 Methods of use of particulate materials in conjunction with braze alloys and resulting structures
03/21/2012EP2430279A2 Cutting element for use in a drill bit for drilling subterranean formations
03/21/2012EP2430278A2 Hybrid drill bit
03/21/2012EP2188485B1 Roller cone bit provided with anti-tracking cutting element spacing
03/21/2012CN202170806U 构造煤发育区钻进、增透一体化装置 Tectonic coal development zone drilling, AR Integrated Device
03/21/2012CN202170754U 高强高硬组合型喷嘴 Combination of high strength and high hardness type nozzle
03/21/2012CN202170753U 分层式自磨出刃同心圆尖齿钻头 Hierarchical Self-grind blade tines concentric drill
03/21/2012CN202170752U 油田井下专用钻头 Downhole special drill
03/21/2012CN102383738A Method and device for improving deep hole forming rate of bedding layer of coal mine
03/21/2012CN102383735A Ultrahigh-pressure drillbit runner system for underground booster and a construction method thereof
03/21/2012CN102383734A Injection-type hole flushing drilling tool
03/21/2012CN102383733A Cement drill bit
03/21/2012CN102383732A Sectional type hydraulic foundation expansion drilling bucket
03/21/2012CN102383726A Drill for central casing drill of air down-the-hole hammer
03/20/2012CA2693265C Drill bit having diamond impregnated inserts primary cutting structure
03/20/2012CA2602020C Rotary drill bit shank, rotary drill bits so equipped, and methods of manufacture
03/20/2012CA2590282C Rolling cutter
03/15/2012WO2012033741A2 Apparatus and system to allow tool passage ahead of a bit
03/15/2012US20120061149 Polycrystalline diamond element
03/15/2012US20120061146 Impregnated drill bits with integrated reamers
03/14/2012EP2427626A1 Drilling equipment and attachment means for the same
03/14/2012EP2427625A1 Slide reamer and stabilizer tool
03/14/2012EP2427624A2 Milling system and method of milling
03/14/2012CN202165017U 金刚石复合齿 Diamond composite tooth
03/14/2012CN202165016U 具有复合胎体的金刚石钻头 Diamond drill a composite carcass
03/14/2012CN202165015U 含有石墨圆柱的金刚石钻头 Containing graphite cylindrical diamond drill
03/14/2012CN202165014U 一种钻孔机械及其钻头结构 One kind of drilling machinery and drill structure
03/14/2012CN202165011U 组合式掏挖钻机 Combined dig drilling rig
03/14/2012CN102373885A Power reamer while drilling for oil and gas well drilling
03/14/2012CN102373884A Borehole-enlarging and bottom-enlarging drill
03/13/2012US8132633 Self positioning cutter and pocket
03/13/2012CA2705607C Roller cone bit bearing with elastomeric seal having self break-in property
03/13/2012CA2668416C Earth-boring rotary drill bits including bit bodies comprising reinforced titanium or titanium-based alloy matrix materials, and methods for forming such bits
03/13/2012CA2644109C Latchable reaming bit
03/08/2012WO2012031108A1 Auger with butterfly flighting
03/08/2012WO2012030926A2 Drill bit with adjustable side force
03/08/2012WO2012006182A4 Drill bits with anti-tracking features
03/08/2012WO2011123875A3 Two-part drilling tool for the percussive or rotary percussive drilling of holes in soil material or rock material
03/08/2012US20120055717 Polycrystalline diamond element
03/08/2012US20120055716 High quality pcd compact
03/08/2012US20120055714 Under reamer
03/08/2012US20120055713 Drill Bit with Adjustable Side Force
03/08/2012US20120055712 Drilling apparatus
03/07/2012EP2425950A1 One-piece cutting head for a drill bit
03/07/2012EP2425089A2 Bearing blocks for drill bits, drill bit assemblies including bearing blocks and related methods
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