Matches 1 - 50 out of 131 1 2 3 >


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US20150075876 EARTH-BORING TOOLS COMPRISING EUTECTIC OR NEAR-EUTECTIC COMPOSITIONS  
Articles comprising at least a portion of an earth-boring tool include at least one insert and a solidified eutectic or near-eutectic composition including a metal phase and a hard material phase....
US20130333951 CUTTING INSERTS, CONES, EARTH BORING TOOLS HAVING GRADING FEATURES, AND RELATED METHODS  
Earth-boring tools include one or more cutting elements having at least one grading feature positioned a known distance from an initial working surface of the cutting element. Methods of grading...
US20140034397 DOWNHOLE REAMER ASYMMETRIC CUTTING STRUCTURES  
A cutting structure for use with a reamer in enlarging a borehole in a subterranean formation includes a plurality of cutter blocks, radially extendable from a reamer body away from a central axis...
US20150060151 CUTTING ELEMENTS WITH WEAR RESISTANT DIAMOND SURFACE  
Cutting elements include polycrystalline diamond which may be attached to a substrate. The polycrystalline diamond may have a ratio of cubic to hexagonal cobalt crystalline structures of greater...
US20140231150 PARTICULATE MIXTURES FOR FORMING POLYCRYSTALLINE COMPACTS AND EARTH-BORING TOOLS INCLUDING POLYCRYSTALLINE COMPACTS HAVING MATERIAL DISPOSED IN INTERSTITIAL SPACES THEREIN  
Polycrystalline compacts include smaller and larger hard grains that are interbonded to fox in a polycrystalline hard material. The larger grains may be at least about 150 times larger than the...
US20110017518 EARTH-BORING TOOLS WITH IMPROVED RETENTION OF CUTTING ELEMENTS INSTALLED WITHIN POCKETS  
A rock bit is formed with pockets for enhanced cutting element retention and support of cutting elements during operation of the rock bit. Portions of the pockets are carburized to increase a...
US20150144407 POLYCRYSTALLINE COMPACTS, EARTH-BORING TOOLS INCLUDING SUCH COMPACTS, AND METHODS OF FABRICATING POLYCRYSTALLINE COMPACTS  
A polycrystalline compact includes diamond grains, cubic boron nitride grains, and grains of an additional nitride, carbide, or boride. The additional nitride, carbide, or boride may be aluminum...
US20140165476 POLYCRYSTALLINE DIAMOND CONSTRUCTION AND METHOD FOR MAKING SAME  
A polycrystalline diamond construction comprising a body of polycrystalline diamond material is formed of a mass of diamond grains exhibiting inter-granular bonding and defining a plurality of...
US20120138301 Controllably Installed Multilateral Completions Assembly  
A multilateral completions assembly having selectively isolated lateral legs during hardware installation. The assembly includes a variety of isolation sleeves disposed interior of the main bore...
US20130000982 Erosion Resistant Hard Composite Materials  
A hard composite composition may comprise a binder and a polymodal blend of matrix powder. The polymodal blend of matrix powder may have at least one first local maxima at a particle size of about...
US20080011519 Cemented tungsten carbide rock bit cone  
An earth-boring bit has a steel body and bearing pin for rotatably supporting a cone. The cone has an exterior surface containing rows of cutting elements. The cone and cutting elements are formed...
US20100300764 POLYCRYSTALLINE DIAMOND  
A polycrystalline diamond (PCD) material 10 comprising at least 88 volume percent and at most 99 volume percent diamond grains 12, the mean diamond grain contiguity being greater than 60.5...
US20140339882 AXIALLY STABLE RETENTION MECHANISM FOR PICKS AND CUTTING ELEMENTS  
A cutting element assembly includes a cutting element partially disposed within a support and a retention mechanism disposed between the cutting element and the support, both the axial and radial...
US20050109546 Flat and bevel chipbreaker insert  
A cutting insert for use on a metal cutting tool downhole in an oil or gas well, with at least one land on a leading edge of the insert, and at least one bevel surface angled relative to the axis...
US20080047759 Hard material insert for a drill and a drill with the hard material insert  
A hard material insert (1) for a drill (2, 2′) includes an axially central reinforcement (3) provided in the insert, and two diametrically opposite, radial arms (4) each having a cross-section...
US20090283325 Polycrystalline Diamond Compact Drill Bit Blade Design and Nozzle Placement  
A rotary drag bit for use in subterranean earth boring operations, the drag bit having blades, rows of cutters on the blades, and nozzles disposed within the rows. The nozzles are configured to...
US20070079994 Diamond-bonded bodies and compacts with improved thermal stability and mechanical strength  
Thermally stable diamond-bonded compacts include a diamond-bonded body having a thermally stable region extending a distance below a diamond-bonded body surface. The thermally stable region...
US20050133277 Superhard mill cutters and related methods  
Superhard ball mill cutters and their materials and manufacturing methods.
US20100108400 HARD METAL PLATE FOR ROCK DRILL AND ROCK DRILL  
In a hard metal plate for insertion in to a seat formed at one end of a drill shaft of a rock drill, comprising a substantially rectangular base shape having two opposed long sides extending in...
US20060201712 Cutter for maintaining edge sharpness  
A cutter comprising a base portion, an ultrahard layer disposed on said base portion, and at least one recessed region on an outer surface of the cutter. A start of the recessed region disposed a...
US20090218146 Polycrystalline Abrasive Composite Cutter  
A polycrystalline abrasive composite cutter, including a tool body with a top cutting surface and a flank surface. The composite cutter, joined to a substrate, constitute a shear cutter for a PDC...
US20120103697 INSERTS, POLYCRYSTALLINE DIAMOND COMPACT CUTTING ELEMENTS, EARTH-BORING BITS COMPRISING SAME, AND METHODS OF FOMING SAME  
An insert for an earth-boring tool includes a body and a coating disposed over at least a portion of the body. The coating comprises a ceramic comprising boron, aluminum, and magnesium....
US20050247492 Cutter having shaped working surface with varying edge chamber  
A cutter for a drill bit used for drilling wells in a geological formation includes an ultra hard working surface and a chamfer along an edge of the working surface, wherein the chamfer has a...
US20070131459 THERMALLY STABLE POLYCRYSTALLINE ULTRA-HARD CONSTRUCTIONS  
Thermally stable polycrystalline constructions comprise a body having a polycrystalline ultra-hard phase and a plurality of empty voids. A population of the voids can be filled with a reaction...
US20110073369 EARTH-BORING TOOLS, METHODS OF MAKING EARTH-BORING TOOLS AND METHODS OF DRILLING WITH EARTH-BORING TOOLS  
Earth-boring tools comprise a body having a face at a leading end. A plurality of cutting elements are disposed over the face and configured as a plurality of kerfing pairs comprising two or more...
US20080060852 Gage configurations for drill bits  
A drill bit includes a plurality of cutting elements are positioned on the at least two roller cones, wherein cutting elements contributing to an operative gage row of the drill bit comprise less...
US20140246249 METHODS FOR FORMING EARTH-BORING TOOLS HAVING CUTTING ELEMENTS MOUNTED IN CUTTING ELEMENT POCKETS AND TOOLS FORMED BY SUCH METHODS  
Methods of forming earth-boring tools include using a plasma spray device to gouge at least one recess through a hardfacing material and into a body. At least a portion of the recess may define a...
US20120234608 CUTTING ELEMENT PLACEMENT ON A FIXED CUTTER DRILL BIT TO REDUCE DIAMOND TABLE FRACTURE  
A rotary drag bit includes a primary cutter row comprising at least one primary cutter mounted on a blade, at least some cutters in the primary cutter row having a portion of a cutting surface...
US20110031029 CUTTING ELEMENT PLACEMENT ON A FIXED CUTTER DRILL BIT TO REDUCE DIAMOND TABLE FRACTURE  
A rotary drag bit includes a primary cutter row comprising at least one primary cutter mounted on a blade, at least some cutters in the primary cutter row having a portion of a cutting surface...
US20110005755 Downhole Casing Cutting Tool  
An oilfield downhole cutting tool is provided. The cutting tool comprises a tool body that comprises a non-cutting stabilizing section. The cutting tool further comprises a plurality of cutters...
US20060157282 Managed pressure drilling  
Embodiments of the present invention include methods and apparatus for dynamically controlling pressure within a wellbore while forming the wellbore. In one aspect, one or more pressure control...
US20090308663 ROTARY DRILL BITS AND DRILLING TOOLS HAVING PROTECTIVE STRUCTURES ON LONGITUDINALLY TRAILING SURFACES  
A rotary drill bit or other drilling tool for drilling or reaming through subterranean formation and comprising a body comprising a distal end and gage areas near a proximal end thereof and...
US20100326739 EARTH-BORING TOOLS COMPRISING SILICON CARBIDE COMPOSITE MATERIALS, AND METHODS OF FORMING SAME  
Earth-boring tools for drilling subterranean formations include a particle-matrix composite material comprising a plurality of silicon carbide particles dispersed throughout a matrix material,...
US20050139395 Drill bit with a moissanite (silicon carbide) cutting element  
A cutting element for a rotary-type drill bit is disclosed comprising moissanite (silicon carbide) crystals impregnated within and/or coated on the surface of the cutting elements.
US20140060934 CUTTING INSERT FOR A ROCK DRILL BIT  
A cutting insert for a rock drill bit having a ridge formed on a cutting face that splits extrudate formed during drilling thereby reducing the mechanical specific energy that may be expended to...
US20090321139 Rotary Drill Bit Steerable System and Method  
A drill bit comprising: a cutting section comprising gage cutters, wherein in the cutting section is a first end of the bit, and wherein the cutting section has a full gage diameter; a heel...
US20090188725 HARD FORMATION INSERT AND PROCESS FOR MAKING THE SAME  
A drilling insert includes a cylindrical body and a top portion of the drilling insert. The top portion is on top of the cylindrical body providing a contact area, wherein the contact area...
US20100236834 HARDFACING COMPOSITIONS, METHODS OF APPLYING THE HARDFACING COMPOSITIONS, AND TOOLS USING SUCH HARDFACING COMPOSITIONS  
A hardfacing composition comprising an iron-based binder alloy; and a carbide phase comprising a sintered carbide and a cast tungsten carbide, wherein the cast carbide is present in a quantity of...
US20070151769 Microwave sintering  
A carbide composite that includes carbide particles having an average particle size of less than about 100 nanometers and a metallic binder disposed around the carbide particles is disclosed. The...
US20130092449 LOW COEFFICIENT OF THERMAL EXPANSION CERMET COMPOSITIONS  
Low coefficient of thermal expansion (CTE) cermet compositions of this invention generally comprise a hard phase material and a ductile phase formed from a binder alloy, wherein the binder alloy...
US20110203856 COMPOSITE CUTTING/MILLING TOOL HAVING DIFFERING CUTTING ELEMENTS AND METHOD FOR MAKING THE SAME  
A cutting/milling tool includes a tool body; a cutting end of the tool body; a first plurality of cutting elements having a substantially identical shape disposed at the cutting end of the tool...
US20080210473 HYBRID CARBON NANOTUBE REINFORCED COMPOSITE BODIES  
A composite body for cutting tools that includes a ductile phase; a plurality of carbide particles dispersed the ductile phase; and a plurality of nanotubes integrated into the composite body is...
US20080035387 Downhole Drill Bit  
In one aspect of the present invention, a drill bit has a body intermediate a shank and a working face. The working face has a plurality of blades converging towards a center of the working face...
US20070267227 DRILL BIT WITH STAGED DURABILITY, STABILITY AND ROP CHARACTERISTICS  
Drill bit with multiple stages of durability and ROP characteristics is disclosed. The drill bit has multiple layers of cutters established by deploying the cutters on blades of different heights...
US20070151770 Drill bits with bearing elements for reducing exposure of cutters  
A bearing element for a rotary, earth boring drag bit effectively reduces an exposure of at least one adjacent cutting element by a readily predictable amount, as well as a depth of cut (DOC) of...
US20130087391 FIXED BLADED DRILL BIT CUTTER PROFILE  
A drill bit has a bit body with a plurality of fixed blades and a plurality of cutters disposed on the plurality of blades. The plurality of cutters includes a plurality of flat shear type cutters...
US20140374169 RETENTION OF MULTIPLE ROLLING CUTTERS  
A cutting tool may include a tool body; at least one blade extending radially from the tool body; a plurality of cutters disposed on the at least one blade; and at least one retention component,...
US20100108402 DOWNHOLE CUTTING TOOL AND METHOD OF MAKING  
A downhole cutting tool includes, a body, a first contoured cutting element in operable communication with the body, and at least one contingency contoured cutting element in operable...
US20100038147 TOUGH CARBIDE BODIES USING ENCAPSULATED CARBIDES  
A drill bit that includes a bit body having a plurality of blades extending radially therefrom, wherein at least a portion of the bit body comprises a first matrix region comprising a plurality of...
US20050269139 Shaped cutter surface  
A cutter for a drill bit used in a geological formation includes a shaped ultra hard working surface. The cutter with the shaped working surface is mounted on a drill bit to provide desired...

Matches 1 - 50 out of 131 1 2 3 >