Matches 1 - 50 out of 56 1 2 >


Match Document Document Title
US20110088954 POLYCRYSTALLINE COMPACTS INCLUDING NANOPARTICULATE INCLUSIONS, CUTTING ELEMENTS AND EARTH-BORING TOOLS INCLUDING SUCH COMPACTS, AND METHODS OF FORMING SUCH COMPACTS  
Polycrystalline compacts include non-catalytic nanoparticles in interstitial spaces between interbonded grains of hard material in a polycrystalline hard material. Cutting elements and...
US20140360789 SPACING OF ROLLING CUTTERS ON A FIXED CUTTER BIT  
A downhole cutting tool may include a cutting element support, structure having a plurality of cutter pockets formed therein; and a plurality of rotatable cutters disposed in the plurality of...
US20090127002 ROLLER CONE BIT BEARING WITH ELASTOMERIC SEAL HAVING SELF BREAK-IN PROPERTY  
A roller cone bit having an elastomeric seal with a self break-in property is disclosed. The elastomeric seal includes abrasive material on a sliding surface for facilitating break-in. Examples of...
US20110240376 MULTILEVEL FORCE BALANCED DOWNHOLE DRILLING TOOLS AND METHODS  
Various downhole drilling tools designed and manufactured at least in part on evaluating respective forces acting on respective groups and sets of cutting elements during simulated engagement with...
US20110079441 HOLE OPENER WITH HYBRID REAMING SECTION  
A hole opener having a hybrid reaming section for downhole earth boring operations may include a reamer body having an axis of rotation, an outer periphery, and upper and lower ends, a plurality...
US20110079442 HOLE OPENER WITH HYBRID REAMING SECTION  
A hole opener having a hybrid reaming section for downhole earth boring operations may include a reamer body having an axis of rotation, an outer periphery, and upper and lower ends, a plurality...
US20110079443 HOLE OPENER WITH HYBRID REAMING SECTION  
A hole opener having a hybrid reaming section for downhole earth boring operations may include a reamer body having an axis of rotation, an outer periphery, and upper and lower ends, a plurality...
US20110209921 COLLAPSIBLE ROCK HEAD AND ASSOCIATED STRUCTURE  
A collapsible cutter bit or rock head for use with an underground auger boring machine has an expanded position for cutting rock in front of an underground pipe and a collapsed position for...
US20080179102 DRILL BITS HAVING OPTIMIZED CUTTING ELEMENT COUNTS FOR REDUCED TRACKING AND/OR INCREASED DRILLING PERFORMANCE  
A roller cone drill bit for drilling earth formation may include rows arranged on each of the cones such that when viewed in routed profile, cutting element profiles partially overlap with other...
US20080156543 Rock Bit and Inserts With a Chisel Crest Having a Broadened Region  
A drill bit for cutting a borehole comprises a bit body. In addition, the drill bit comprises a rolling cone cutter mounted on the bit body and adapted for rotation about a cone axis. Further, the...
US20110079440 HOLE OPENER WITH HYBRID REAMING SECTION  
A hole opener having a hybrid reaming section for reaming subterranean wellbores may include a tubular reamer body having a longitudinal axis and upper and lower ends, a rolling cutter mount...
US20140338984 HOLE OPENER BEARING ARRANGEMENT  
The present disclosure provides a back reamer roller cone that is configured so that the bearings assemblies therein can be relatively easily removed and replaced. Methods of replacing the bearing...
US20110290566 EARTH-BORING BITS AND OTHER PARTS INCLUDING CEMENTED CARBIDE  
An article of manufacture includes a cemented carbide piece, and a joining phase that binds the cemented carbide piece into the article. The joining phase includes inorganic particles and a matrix...
US20090126998 HYBRID DRILL BIT AND DESIGN METHOD  
A hybrid earth-boring bit comprising a bit body having a central axis, at least one, preferably three fixed blades, depending downwardly from the bit body, each fixed blade having a leading edge,...
US20150047910 DOWNHOLE CUTTING TOOLS HAVING ROLLING CUTTERS WITH NON-PLANAR CUTTING SURFACES  
A cutting tool may include a tool body having a plurality of blades extending radially therefrom; each of the plurality of blades having a plurality of cutter pockets formed therein; and at least...
US20140124270 PDC BITS HAVING ROLLING CUTTERS AND USING MIXED CHAMFERS  
A cutting tool cutting tool may include a tool body having a plurality of blades extending radially therefrom, a plurality of rotatable cutting elements having a first chamfer mounted on at least...
US20100032215 Tri-cone bits for horizontal and hard formation drilling applications  
The present invention discloses a tri-cone drill bit comprising: three head sections with upper parts thereof jointed together to form a bit body, three cones rotatably mounted to lower ends of...
US20080053708 RECESSED EXTENDED NOZZLES FOR DRILL BITS AND DRILL BITS SO EQUIPPED  
A nozzle includes a nozzle body having an extended, tubular nozzle protrusion terminating at a nozzle exit, the nozzle body having an annular shoulder surrounding a base of the nozzle protrusion....
US20080264695 Hybrid Drill Bit and Method of Drilling  
A hybrid drill bit having both roller cones and fixed blades is disclosed, and a method of drilling. The cutting elements on the fixed blades form a continuous cutting profile from the perimeter...
US20130140093 DRILL BIT HAVING GEOMETRICALLY SHARP INSERTS  
A drill bit configured for boring holes or wells into the earth, the drill bit having a face and a plurality of zones, the drill bit having geometrically sharp inserts located in an inner zone and...
US20150075872 CUTTER PROFILE FOR A FIXED CUTTER DRILL BIT  
A cutter profile for a fixed cutter drill bit having a drill bit axis, the cutter profile including a nose portion radially offset from the drill bit axis and surrounding the drill bit axis, a...
US20090272582 MODULAR HYBRID DRILL BIT  
An earth-boring bit comprising a bit body is cofigured at its upper end for connection into a drillstring. A fixed blade depends axially downwardly from the bit body. An axially extending slot is...
US20120023833 High Impact Resistant Tool  
In one aspect of the present invention, a high impact resistant tool comprises a sintered polycrystalline diamond body bonded to a cemented metal carbide substrate at an interface, the body...
US20140332271 EARTH-BORING TOOLS INCLUDING MOVABLE FORMATION-ENGAGING STRUCTURES AND RELATED METHODS  
Earth-boring tools may have a body, a cutting element attached to the body at a first location, and a formation-engaging structure attached to the body at a second location. The formation-engaging...
US20130153305 Drag Drill Bit With Hybrid Cutter Layout Having Enhanced Stability  
A drill bit that provides enhanced stability and a method for manufacturing such bit. In a preferred embodiment, the hybrid drill bit includes a single short driven blade in the shoulder region of...
US20110290565 Hybrid Bit with Variable Exposure  
An earth boring drill bit comprising a bit body having a bit profile including nose, shoulder, and gage sections; a plurality of fixed cutting elements secured to the body and defining a fixed...
US20100320001 HYBRID BIT WITH VARIABLE EXPOSURE  
An earth boring drill bit comprising a bit body having a bit profile including nose, shoulder, and gage sections; a plurality of fixed cutting elements secured to the body and defining a fixed...
US20110000714 STABILIZING MEMBERS FOR FIXED CUTTER DRILL BIT  
A drill bit for drilling a borehole in an earthen formation. In an embodiment, the bit comprises a first blade having a cutter-supporting surface. In addition, the bit comprises a plurality of...
US20100155145 HYBRID DRILL BIT WITH SECONDARY BACKUP CUTTERS POSITIONED WITH HIGH SIDE RAKE ANGLES  
A hybrid drill bit having secondary backup cutters positioned with high side rake angles.
US20120111638 SYSTEM AND METHOD FOR ADJUSTING ROLLER CONE PROFILE ON HYBRID BIT  
An earth boring drill bit designed for a specific performance, within a finished product tolerance, using components built to a looser manufacturing tolerance. The bit may be assembled by...
US20130098688 DRILL BITS HAVING ROTATING CUTTING STRUCTURES THEREON  
A drill bit may include a bit body rotatable about a longitudinal axis and having, at one end, a connection for securing the drill bit to a drill string and having a face opposite the connection...
US20130186693 HYBRID DRILL BIT  
A boring tool having downhole hammered impact elements that present to the bore face from platforms or plateaux of the work face of the tool, such work face having shear cutters able to benefit...
US20150211303 DRILL BITS WITH ANTI-TRACKING FEATURES  
Drill bits with at least two roller cones of different diameters and/or utilizing different cutter pitches in order to reduce bit tracking during drilling operations are described. In particular,...
US20110315452 Drill Bits with Anti-Tracking Features  
Drill bits with at least two roller cones of different diameters and/or utilizing different cutter pitches in order to reduce bit tracking during drilling operations are described. In particular,...
US20100252327 Drill Bits With Cutters to Cut High Side of Wellbores  
A drill bit is disclosed that in one aspect includes a cutting device on a selected section of the drill bit, which cutting device is configured to cut formation on the high side of a wellbore...
US20110259646 Disc Cutter for an Earth Boring System  
In one aspect of the present invention a disc cutter for an earth boring system includes an axle and a sintered polycrystalline ceramic disc disposed about and forming a continuous perimeter...
US20100155146 HYBRID DRILL BIT WITH HIGH PILOT-TO-JOURNAL DIAMETER RATIO  
The invention disclosed and taught herein is directed to an improved hybrid drill bit and associated elements having at least two rolling cutters, each rotatable around separate spindles on the...
US20100224417 HYBRID DRILL BIT WITH HIGH BEARING PIN ANGLES  
The invention disclosed and taught herein is directed to an improved hybrid drill bit having at least two rolling cutters, each rotatable around an axis of rotation, at least one of the rolling...
US20140151131 Hybrid Drill Bit  
A bit body is configured at its upper extent for connection into a drillstring. At least one fixed blade extends downwardly from the bit body, and has a radially outermost gage surface. A...
US20100181292 METHOD AND APPARATUS FOR AUTOMATED APPLICATION OF HARDFACING MATERIAL TO ROLLING CUTTERS OF HYBRID-TYPE EARTH BORING DRILL BITS, HYBRID DRILL BITS COMPRISING SUCH HARDFACED STEEL-TOOTHED CUTTING ELEMENTS, AND METHODS OF USE THEREOF  
The present invention relates to a system and method for automated or “robotic” application of hardfacing to the surface of a steel-toothed cutter of a standard earth-boring rock bit or a...
US20100276205 METHODS OF FORMING EARTH-BORING ROTARY DRILL BITS  
Methods of forming earth-boring rotary drill bits include providing a bit body, providing a shank that is configured for attachment to a drill string, and attaching the shank to the bit body....
US20130313021 Hybrid Drill Bits Having Increased Drilling Efficiency  
An earth boring drill bit is described, the bit having a bit body having a central longitudinal axis that defines an axial center of the bit body and configured at its upper extent for connection...
US20140262536 DOWNHOLE CUTTING TOOLS HAVING HYBRID CUTTING STRUCTURES  
A drill bit is disclosed, wherein the drill bit has a bit body with a longitudinal axis extending there through and a bit face. A plurality of blades extends from the bit body, wherein the...
US20100288561 HYBRID DRILL BIT  
A bit body is configured at its upper extent for connection into a drillstring. At least one fixed blade extends downwardly from the bit body, and has a radially outermost gage surface. A...
US20170175450 ROLLING CONES WITH GAGE CUTTING ELEMENTS, EARTH-BORING TOOLS CARRYING ROLLING CONES WITH GAGE CUTTING ELEMENTS AND RELATED METHODS  
A rolling cone for use on an earth-boring tool includes a frustoconical surface at a proximal end of the rolling cone and an outer surface located distally of the frustoconical surface. The outer...
US20170167201 DRILLING SYSTEMS AND HYBRID DRILL BITS FOR DRILLING IN A SUBTERRANEAN FORMATION AND METHODS RELATING THERETO  
Drill bits and methods relating thereto are disclosed. In an embodiment, the drill bit includes a body having a plurality of legs each having a lower section that has a leading surface and a...
US20170122036 EXTERNAL, DIVORCED PDC BEARING ASSEMBLIES FOR HYBRID DRILL BITS  
A hybrid-type earth boring drill bit is described having fixed cutting blades and rolling cones with cutting elements, wherein the rolling cones are associated with a spindle assembly that may be...
US20160348440 HYBRID DRILL BIT  
A drill bit includes a bit body having a longitudinal bit axis extending there through, a plurality of journals extending from the bit body, each journal having a journal axis extending from a...
US20160312538 WELLBORE DRILL BIT HAVING SHEAR CUTTERS AND GOUGING CUTTERS  
A fixed cutter drill bit includes a bit body and at least one primary blade formed in the bit body and defining a surface profile on the bit body. The at least one primary blade extends from a...
US20160273273 ROLLING ELEMENT ASSEMBLIES  
A drill bit includes a bit body having one or more blades extending therefrom and a plurality of cutters secured to the one or more blades. One or more rolling elements are positioned on the bit...

Matches 1 - 50 out of 56 1 2 >