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)
11/2012
11/01/2012WO2012148704A2 Casing end tool
11/01/2012WO2012121946A3 Methods of forming polycrystalline tables and polycrystalline elements and related structures
11/01/2012WO2012112016A3 Boring machine
11/01/2012WO2012109205A3 Nano-coatings for articles
11/01/2012WO2012099668A3 Expanding mill having camming sleeve for extending cutting blade
11/01/2012WO2012080812A3 Drilling optimization with a downhole motor
11/01/2012WO2011146736A9 Rolling cutter bit design
11/01/2012US20120275875 Machine tool bit
11/01/2012US20120273282 Downhole tools having mechanical joints with enhanced surfaces, and related methods
11/01/2012US20120273281 Methods of attaching rolling cutters in fixed cutter bits using sleeve, compression spring, and/or pin(s)/ball(s)
11/01/2012US20120273280 Polycrystalline diamond compact cutters with conic shaped end
11/01/2012US20120273279 Core Barrel and Related Drilling Apparatus and Method
11/01/2012US20120273275 Method and apparatus for dual speed, dual torque drilling
11/01/2012US20120273233 Drill string components resistant to jamming
11/01/2012CA2834357A1 Methods of attaching rolling cutters in fixed cutter bits using sleeve, compression spring, and/or pin(s)/ball(s)
11/01/2012CA2832481A1 Casing end tool
10/2012
10/31/2012EP2518256A1 Cutting structures for casing component drillout and earth-boring drill bits including same
10/31/2012EP2516791A1 Method for replacing a tunnel boring machine disk cutter, handling device and disk cutter suited to such a method
10/31/2012DE112010005170T5 Zementiertes Karbidwerkzeug und Verfahren zum Fixieren einer harten Spitze Cemented carbide tool and method for fixing a hard tip
10/31/2012CN202510478U Inverted under-cut anchor
10/31/2012CN202510045U Drilling tool applicable to drilling of deviated well section of horizontal well
10/31/2012CN202510035U Roller bit with inserted-tooth-variable interference structure
10/31/2012CN202510034U Sectional type diamond clad sheet
10/31/2012CN202510033U Relay-style dual-working layer electro-plated diamond bit
10/31/2012CN202510032U Drill bit for hydraulic jumbo
10/31/2012CN202510031U Drill bit and drilling equipment
10/31/2012CN202510025U Trenchless drilling equipment
10/31/2012CN202509458U One-way high-pressure impact extrusion thick liquid grouting head
10/30/2012US8297382 Polycrystalline diamond compacts, method of fabricating same, and various applications
10/30/2012US8297381 Stabilizer subs for use with expandable reamer apparatus, expandable reamer apparatus including stabilizer subs and related methods
10/30/2012US8297380 Casing and liner drilling shoes having integrated operational components, and related methods
10/30/2012US8297377 Method and system for accessing subterranean deposits from the surface and tools therefor
10/26/2012WO2012145586A1 Selectively leached cutter
10/26/2012WO2012145400A2 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
10/26/2012WO2012145351A2 High diamond frame strength pcd materials
10/26/2012WO2012142919A1 Insert with the cutting edge and its rock drill bit
10/26/2012WO2012142891A1 Method and system for improving drilling speed by using drill string vibration
10/26/2012WO2012099716A3 Polycrystalline compacts having differing regions therein, cutting elements and earth-boring tools including such compacts, and methods of forming such compacts
10/26/2012CA2833386A1 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
10/26/2012CA2832988A1 Selectively leached cutter
10/26/2012CA2816465A1 Method and system for improving drilling speed by using drill string vibration
10/25/2012US20120267174 Methods of fabricating polycrystalline diamond elements and compacts using sp2-carbon-containing particles
10/25/2012US20120267173 Drill bit for boring earth and other hard materials
10/25/2012US20120267172 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
10/24/2012EP2513406A1 Method and apparatus for testing superhard material performance
10/24/2012EP2513405A1 Drill bits with axially-tapered waterways
10/24/2012CN202500513U Core-taking drill tool for super-fragile and soft stratum
10/24/2012CN202500498U Diamond cutter
10/24/2012CN202500497U Reducing drill bit
10/24/2012CN202500496U Drill bit for geological exploration
10/24/2012CN202500495U Check valve installed on roller bit
10/24/2012CN202500494U Jet bit for carrying out grouting consolidation on aggregate filled in formation cavity
10/24/2012CN102753286A Polycrystalline diamond structure
10/24/2012CN102747964A Diamond hard alloy composite tooth for oil exploration and mining
10/24/2012CN102747963A Improved structure of drill bit
10/24/2012CN102747962A High-sealing roller bit
10/24/2012CN102747961A Cone bit with high speed and high temperature resistances suitable for underground power drill tool
10/24/2012CN102747960A Hybrid drill bit
10/24/2012CN102747953A Multiple step type drilling and protecting integrated system and process for soft coal seam
10/24/2012CN102744401A Geological mineral exploration device and preparation method thereof
10/24/2012CN101956531B Underground horizontal drilling combined drilling tool of oil well drilling platform
10/23/2012US8292006 Diamond-enhanced cutting elements, earth-boring tools employing diamond-enhanced cutting elements, and methods of making diamond-enhanced cutting elements
10/23/2012US8291974 Method and system for accessing subterranean deposits from the surface and tools therefor
10/18/2012WO2012141739A1 Use of resonant mixing to produce impregnated bits
10/18/2012WO2012140570A1 Rock drill
10/18/2012WO2012139435A1 Specialized drill bit for deep hole inverted t-shaped pile and formation method thereof
10/18/2012WO2012116204A3 Integrated reaming and measurement system and related methods of use
10/18/2012US20120261197 Polycrystalline diamond compacts including at least one transition layer and methods for stress management in polycrsystalline diamond compacts
10/18/2012US20120261196 High diamond frame strength pcd materials
10/18/2012US20120261192 Core Drill and Coring Method
10/18/2012US20120260581 Use of resonant mixing to produce impregnated bits
10/18/2012CA2827791A1 Use of resonant mixing to produce impregnated bits
10/17/2012EP2511469A2 Drill bit
10/17/2012EP2510180A2 Polycrystalline diamond cutting element structure
10/17/2012EP2509733A1 Polycrystalline diamond structure
10/17/2012CN202493221U Polycrystalline diamond compact drill
10/17/2012CN202493220U Drilling tool joint for connecting down-well liquid level monitoring instrument
10/17/2012CN202493219U Combined bit formed by peeling bits and PDC (Polycrystalline Diamond Compact) blades
10/17/2012CN102741495A Cutting element and method of orienting
10/17/2012CN102733758A Impregnated block type diamond drill for coring
10/17/2012CN102733757A Drill bit of drilling type coal mining machine
10/17/2012CN102729006A Method for producing diamond reamer by adopting soldering process
10/17/2012CN102003140B Traversing reverse circulating drilling method of horizontal directional drilling pipeline and special drilling bit
10/16/2012US8286736 Drill bit, a drill rod and a self drilling roof bolt
10/16/2012US8286735 Drill bit having rotational cutting elements and method of drilling
10/16/2012US8286730 Pressure and flow control in drilling operations
10/11/2012WO2012138827A2 Apparatus for controlling drill bit depth of cut using thermally expandable materials
10/11/2012WO2012138638A2 Cool cutting polycrystalline diamond cutting element
10/11/2012US20120255793 Matrix powder for matrix body fixed cutter bits
10/11/2012US20120255788 Drill Bit with Hydraulically Adjustable Axial Pad for Controlling Torsional Fluctuations
10/11/2012US20120255786 Method and Apparatus for Reaming Well Bore Surfaces Nearer the Center of Drift
10/11/2012US20120255784 Apparatus for Controlling Drill Bit Depth of Cut Using Thermally Expandable Materials
10/11/2012CA2832056A1 Apparatus for controlling drill bit depth of cut using thermally expandable materials
10/10/2012CN202483784U Water hydraulic power conversion device for walking type reaming cutter head
10/10/2012CN202483462U Self-filtration drill bit with diamond composite lengthened nozzle
10/10/2012CN202483461U Polycrystalline diamond compact (PDC) bit with six scrapers
10/10/2012CN202483460U Compact drill tooth used for being inset on drill
10/10/2012CN202483459U Shield machine for tunnel construction
10/10/2012CN202483458U Four-scraping knife stripe mixed teeth drill head
10/10/2012CN202483457U 8.375-inch-long eight-scraper polycrystalline diamond compact (PDC) coring bit
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