E21B 10 - Drill bits - Patents Sitemap

Patents for E21B 10 - Drill bits (19,464)
12/2009
12/02/2009	EP2126272A1 Hardfacing around ball loading hole for earth-boring bit
12/02/2009	EP2054582B1 Stabilized seal for rock bits
12/02/2009	CN201354591Y Permafrost drill bit
12/02/2009	CN101595272A Microtunnelling system and apparatus
12/02/2009	CN101595233A A hardfacing material for hardfacing earth boring bits used in abrasive wear environments and a method of manufacturing the same
12/02/2009	CN101592021A Diamond compact
12/02/2009	CN101591911A Bidirectional cement-soil mixing pile machine
12/02/2009	CN100563932C Abrasive tools with patterned grit and manufacture thereof
12/01/2009	US7625521 displacements within a mold are coated with a mixture of superabrasive free matrix-material and polypropylene carbonate binder, mold is packed with a mixture of matrix material and superabrasive powder and the arrangement heated to form a solid drill bit body, removing the body, forming pockets
12/01/2009	US7624825 Drill bit and cutter element having aggressive leading side
12/01/2009	US7624824 Downhole hammer assembly
12/01/2009	US7624823 Roller cone drill bits with optimized cutting zones, load zones, stress zones and wear zones for increased drilling life and methods
12/01/2009	US7624822 Thread joint
12/01/2009	US7624821 Constricting flow diverter
12/01/2009	US7624818 Earth boring drill bits with casing component drill out capability and methods of use
11/2009
11/26/2009	WO2009070372A3 Minimizing stick-slip while drilling
11/26/2009	US20090288886 Retrieval Tool With Slips for Retrieving Bottom Hole Assembly During Casing While Drilling Operations
11/25/2009	EP2122113A1 Superabrasive cutting elements with enhanced durability and increased wear life, and drilling apparatus so equipped
11/25/2009	EP2122112A1 Drilling bit having a cutting element. co-sintered with a cone structure
11/25/2009	EP2122111A2 Core drill bit with extended matrix height
11/25/2009	EP2122110A1 Computer aided design of rock drilling bit
11/25/2009	EP2122109A1 Method and apparatus for collecting drill bit performance data
11/25/2009	EP2121226A1 Cutting element for a rock drill and method for producing a cutting element for a rock drill
11/25/2009	EP1324960B1 Polycrystalline diamond with a surface depleted of catalyzing material
11/25/2009	CN201351457Y Spiral drag drill bit
11/25/2009	CN201351456Y Guiding reaming bit
11/25/2009	CN101589208A Impregnated bit with changeable hydraulic nozzles
11/25/2009	CN101589207A Detritus flow management features for drag bit cutters and bits so equipped
11/25/2009	CN101589206A A drill bit and a single drilling apparatus
11/25/2009	CN101589205A Restriction element trap for use with and actuation element of a downhole apparatus and method of use
11/25/2009	CN101589204A Expandable reamers for earth-boring applications and methods of using the same
11/25/2009	CN101588884A Displacement members and methods of using such displacement members to form bit bodies of earth boring rotary drills bits
11/25/2009	CN101586442A Long spiral wolf tooth stick type drill of long screw pile machine
11/25/2009	CN101586441A High-pressure water jet system and method for drilling and enlarging holes on coal bed
11/25/2009	CN100562643C Drill bit with protection member
11/25/2009	CN100562642C Anti-tracking earth boring bit with selected varied pitch for overbreak optimization and vibration reduction
11/24/2009	US7621352 Apparatus, system, and method for catching a core
11/24/2009	US7621350 Impregnated bit with changeable hydraulic nozzles
11/24/2009	US7621349 Drill bit with a fixed cutting structure
11/24/2009	US7621348 Drag bits with dropping tendencies and methods for making the same
11/24/2009	US7621347 Bit leg and cone hardfacing for earth-boring bit
11/24/2009	US7621346 Hydrostatic bearing
11/24/2009	US7621345 High density row on roller cone bit
11/19/2009	WO2009140486A2 Conformal bearing for rock drill bit
11/19/2009	WO2009140123A2 Matrix bit bodies with multiple matrix materials
11/19/2009	WO2009140122A2 Diamond impregnated bits and method of using and manufacturing the same
11/19/2009	WO2009140121A2 Impregnated drill bit
11/19/2009	WO2009140006A1 Reverse flow mill
11/19/2009	WO2009137923A1 Hydraulic drilling method with penetration control
11/19/2009	WO2009103055A3 Insertable devices for retention systems, structures for attachment and methods of use
11/19/2009	US20090285638 One-piece drill bit for single-pass anchor bolting and single pass drilling apparatus
11/19/2009	US20090283336 Diamond impregnated bits and method of using and manufacturing the same
11/19/2009	US20090283335 Impregnated drill bits and methods of manufacturing the same
11/19/2009	US20090283334 Impregnated drill bit
11/19/2009	US20090283333 Matrix bit bodies with multiple matrix materials
11/19/2009	US20090283332 Conformal bearing for rock drill bit
11/19/2009	US20090283328 Reamer with polycrystalline diamond compact inserts
11/19/2009	US20090283326 Sonic drill bit for core sampling
11/19/2009	US20090283325 Polycrystalline Diamond Compact Drill Bit Blade Design and Nozzle Placement
11/19/2009	US20090283089 Brazed Diamond Tools and Methods for Making the Same
11/19/2009	CA2848671A1 Sonic drill bit for core sampling
11/19/2009	CA2775016A1 Sonic drill bit for core sampling
11/19/2009	CA2728133A1 Reverse flow mill
11/19/2009	CA2724182A1 Hydraulic drilling method with penetration control
11/19/2009	CA2720810A1 Sonic drill bit for core sampling
11/18/2009	EP2118432A1 Rotary drag bit and methods therefor
11/18/2009	EP2118431A1 Rotary drag bit
11/18/2009	EP2118430A2 Rotary drag bit
11/18/2009	EP2118429A2 Rotary drill bit steerable system and method
11/18/2009	EP2118329A1 A hardfacing material for hardfacing earth boring bits used in abrasive wear environments and a method of manufacturing the same
11/18/2009	CN201347722Y Pre-crushing stress PDC drill bit
11/18/2009	CN101583773A Methods of attaching a shank to a body of an earth boring drilling tool, and tools formed by such methods
11/17/2009	US7617747 Methods of manufacturing rotary drag bits including a central region having a plurality of cutting structures
11/17/2009	CA2573888C Steerable underreamer/stabilizer assembly and method
11/17/2009	CA2509854C A rotating dry drilling bit
11/12/2009	WO2009136385A2 Drill bit head for percussion drilling apparatus
11/12/2009	WO2009086081A4 Silicon carbide composite materials, earth-boring tools comprising such materials, and methods for forming the same
11/12/2009	WO2009059088A3 Impregnated rotary drag bit and related methods
11/12/2009	US20090277691 Drilling tool, in particular spiral drill
11/12/2009	US20090277689 Activating device for a downhole tool
11/12/2009	CA2713578A1 Drill bit head for percussion drilling apparatus
11/11/2009	CN201343994Y Drill bit device for mohole in high tailing dam
11/11/2009	CN101575853A Two-way drill rod of cement mixing pile
11/11/2009	CN101574738A Formulation of nano composite material used for improving air percussion bit tooth life
11/10/2009	US7614464 Rock drill machine
11/10/2009	US7614170 Extendable excavating screw unit equipped with hydraulic excavating auxiliary blades
11/05/2009	WO2009135119A2 Modular hybrid drill bit
11/05/2009	WO2009135116A2 Stabilizer and reamer system having extensible blades and bearing pads and methods of using same
11/05/2009	WO2009079331A4 Erosion resistant fluid passageways and flow tubes for earth-boring tools, methods of forming the same and earth-boring tools including the same
11/05/2009	US20090272583 Superabrasive inserts including an arcuate peripheral surface
11/05/2009	US20090272582 Modular hybrid drill bit
11/04/2009	EP2113049A1 Rotary drill bits with protected cutting elements and methods
11/03/2009	CA2379806C Rotary seal for directional drilling tools
10/2009
10/29/2009	WO2009132183A2 Arrangement of cutting elements on roller cones for earth boring bits
10/29/2009	WO2009132167A1 Polycrystalline diamond compact drill bit blade design and nozzle placement
10/29/2009	WO2009132079A2 Bi-steel percussive drill rod
10/29/2009	WO2009131969A2 Anti-tracking feature for rock bits
10/29/2009	WO2009131562A1 Polycrystalline diamond materials, methods of fabricating same, and applications using same
10/29/2009	US20090266619 Fixed Cutter Bit With Backup Cutter Elements on Secondary Blades
10/29/2009	US20090266614 Methods, systems, and bottom hole assemblies including reamer with varying effective back rake

1 ... 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 ... 195