Patent application number | Description | Published |
20130067827 | POLYCRYSTALLINE DIAMOND MATERIALS HAVING IMPROVED ABRASION RESISTANCE, THERMAL STABILITY AND IMPACT RESISTANCE - PCD materials comprise a diamond body having bonded diamond crystals and interstitial regions disposed among the crystals. The diamond body is formed from diamond grains and a catalyst material at high pressure/high temperature conditions. The diamond grains have an average particle size of about 0.03 mm or greater. At least a portion of the diamond body has a high diamond volume content of greater than about 93 percent by volume. The entire diamond body can comprise high volume content diamond or a region of the diamond body can comprise the high volume content diamond. The diamond body includes a working surface, a first region substantially free of the catalyst material, and a second region that includes the catalyst material. At least a portion of the first region extends from the working surface to depth of from about 0.01 to about 0.1 mm | 03-21-2013 |
20130092449 | 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 is specially designed having a CTE that is closely matched to the hard phase material. Hard phase materials used to form low CTE compositions of this invention are selected from the group of carbides consisting of W, Ti, Mo, Nb, V, Si, Hf, Ta, and Cr carbides. The binder alloy is formed from a mixture of metals selected from the group consisting of Co, Ni, Fe, W, Mo, Ti, Ta, V, Nb, C, B, Cr, and Mn. In a preferred embodiment, low CTE compositions comprises WC as the hard phase material, and a ductile phase binder alloy formed from a mixture of Fe, Co, and Ni. The so-formed low CTE composition has a coefficient of thermal expansion that is less than that of conventional WC—Co at the same temperature and having the same metal content, thereby providing improved resistance to thermal shock and thermal fatigue related failure. | 04-18-2013 |
20130098682 | OPTIMIZED REAMING SYSTEM BASED UPON WEIGHT ON TOOL - A drilling apparatus includes a tubular body including an upper connection and a lower connection with a drill bit disposed thereon, and an axial borehole therethrough, wherein the upper connection is configured to attach to a drillstring, primary cutter blocks coupled to the tubular body and configured to selectively expand radially therefrom. The drilling apparatus further includes backup cutter blocks coupled to the tubular body and configured to selectively expand radially therefrom, and an activation system configured to selectively expand and collapse the primary and backup cutter blocks in response to changes in weight applied to the primary and backup cutter blocks. | 04-25-2013 |
20130098688 | 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 end; and a plurality of cutting structures having at least one fixed cutting structure disposed on the bit body face and at least one cutting body rotatably attached to the face of the bit body; wherein, in a rotated view of the plurality of cutting structures into a single plane, there is substantially no radial overlap between at least one fixed cutting structure and the at least one cutting body. | 04-25-2013 |
20130125475 | TUNGSTEN RHENIUM COMPOUNDS AND COMPOSITES AND METHODS FOR FORMING THE SAME - The present invention relates to tungsten rhenium compounds and composites and to methods of forming the same. Tungsten and rhenium powders are mixed together and sintered at high temperature and high pressure to form a unique compound. An ultra hard material may also be added. The tungsten, rhenium, and ultra hard material are mixed together and then sintered at high temperature and high pressure. | 05-23-2013 |
20130133531 | HIGH PRESSURE CARBIDE COMPONENT WITH SURFACES INCORPORATING GRADIENT STRUCTURES - An anvil including a hard phase and a metal matrix in which the hard phase is dispersed, a concentration of the metal matrix phase varying according to a concentration gradient, is disclosed. The anvil may be used in a high pressure press. Methods of making an anvil including forming a hard phase dispersed in a metal matrix phase, a concentration of the metal matrix phase varying according to a concentration gradient, are also disclosed. | 05-30-2013 |
20130133954 | ROLLER REAMER COMPOUND WEDGE RETENTION - A roller reamer includes a roller assembly deployed in a corresponding axial recess in a tool body. The roller assembly is retained in the axial recess via compound wedging action provided by at least one retention assembly. One or more embodiments utilize first and second retention assemblies located at first and second axially opposed end portions of the roller assembly. The retention assembly includes first and second wedges, the first of which converts a substantially radially directed force to an axially directed force and the second of which converts the axially directed force to a cross-axially directed retention force that retains the roller assembly in the axial recess. | 05-30-2013 |
20130133957 | SHEAR CUTTER WITH IMPROVED WEAR RESISTANCE OF WC-CO SUBSTRATE - A cutting element having a substrate, an abrasive layer mounted to the substrate at an interface, and a longitudinal axis extending through the abrasive layer and the substrate is disclosed, wherein the substrate has a binder material, a plurality of metal carbide grains bonded together by an amount of the binder material, and at least one binder gradient, and wherein the amount of binder material decreases along at least one direction to form the at least one binder gradient. | 05-30-2013 |
20130140094 | ROLLING CUTTER USING PIN, BALL OR EXTRUSION ON THE BIT BODY AS ATTACHMENT METHODS - A drill bit has a bit body, a plurality of blades extending radially from the bit body, wherein each blade comprises a leading face and a trailing face, a plurality of cutter pockets disposed on the plurality of blades, at least one rolling cutter, wherein each rolling cutter is disposed in one of the cutter pockets, and wherein each rolling cutter comprises a cutting face, a cutting edge, an outer circumferential surface, and a back face. A back retainer is disposed adjacent to the back face, wherein the back retainer protrudes partially into the rolling cutter along a rotational axis of the rolling cutter, and a front retainer is disposed adjacent to the at least one rolling cutter on the leading face of the blade. Each front retainer has a retention end, wherein the retention end is positioned adjacent to a portion of the cutting face of each rolling cutter, and an attachment end, wherein the attachment end is attached to a portion of the blade. | 06-06-2013 |
20130146367 | ROLLING CUTTER WITH IMPROVED ROLLING EFFICIENCY - A cutting structure may include an outer support element; and an inner rotatable cutting element comprising a cutting surface at its upper end; wherein the inner rotatable cutting element comprises at least one line contact along a circumferential side surface thereof and/or at least one point contact at a bottom face thereof. | 06-13-2013 |
20130146368 | METHOD FOR FORMING A CUTTING ELEMENT AND DOWNHOLE TOOLS INCORPORATING THE SAME - Cutting elements include an ultrahard material body formed at high pressure and high temperature conditions in the absence of catalyzing material to provide a material microstructure comprising a matrix phase of bonded together ultrahard material particles and interstitial regions disposed throughout the matrix phase providing porosity of less than about 6 volume percent. The body may include a substrate attached thereto, and may include an infiltrant material disposed in a population of the interstitial regions. The body may have regions with different porosities, e.g., with a higher porosity region located adjacent a substrate interface and/or along a central region. The body may include more than one infiltrant, each located in different regions. The infiltrant may be introduced into the body during a separate high pressure/high temperature process. The body may include a region which extends a depth from a working surface that is substantially free of any infiltrant. | 06-13-2013 |
20130146369 | DIAMOND BONDED CONSTRUCTION WITH THERMALLY STABLE REGION - Diamond bonded constructions comprise a polycrystalline diamond body having a matrix phase of bonded-together diamond grains and a plurality of interstitial regions between the diamond grains including a catalyst material used to form the diamond body disposed within the interstitial regions. A sintered thermally stable diamond element is disposed within and bonded to the diamond body, and is configured and positioned to form part of a working surface. The thermally stable diamond element is bonded to the polycrystalline diamond body, and a substrate is bonded to the polycrystalline diamond body. The thermally stable diamond element comprises a plurality of bonded-together diamond grains and interstitial regions, wherein the interstitial regions are substantially free of a catalyst material used to make or sinter the thermally stable diamond element. A barrier material may be disposed over or infiltrated into one or more surfaces of the thermally stable diamond element. | 06-13-2013 |
20130152480 | METHODS FOR MANUFACTURING POLYCRYSTALLINE ULTRA-HARD CONSTRUCTIONS AND POLYCRYSTALLINE ULTRA-HARD CONSTRUCTIONS - Polycrystalline ultra-hard constructions are made by subjecting a sintered ultra-hard body, substantially free of a sintering catalyst material, to a further HPHT process. The process is controlled to initially melt and infiltrating a filler material into the sintered ultra-hard body to form a filler region having interstitial regions filled with the filler material. The filler region extends a partial depth into the sintered ultra-hard body and is formed at a temperature below the melting temperature of an infiltrant material. Next, the process is controlled to melt and infiltrate the infiltrant material into the sintered ultra-hard body to form an infiltrant region that extends a partial depth into the sintered ultra-hard body. A portion of the filler region and/or the infiltrant region may be removed to form a thermally stable region. | 06-20-2013 |
20130153306 | FIXED CUTTER DRILL BIT HEEL AND BACK-REAM CUTTER PROTECTIONS FOR ABRASIVE APPLICATIONS - A method of manufacturing a fixed cutter drill bit may include loading a first matrix material of controlled thickness to at least a portion of a mold cavity corresponding to a heel surface of at least one blade; loading a second matrix material into the remaining portions of the mold cavity; heating the mold contents to form a matrix body of the fixed cutter drill bit; and disposing at least one back reaming element in at least one back reaming cutter pocket. | 06-20-2013 |
20130168151 | SYSTEM AND METHOD TO FACILITATE THE DRILLING OF A DEVIATED BOREHOLE - A system and method for facilitating the drilling of a deviated borehole. The system and method employ a flexible conveyance. A hydraulic actuation assembly is coupled to the flexible conveyance and a whipstock is releasably coupled to the hydraulic actuation assembly. The whipstock and hydraulic actuation assembly are conveyed downhole in the wellbore. The hydraulic actuation assembly provides a hydraulic fluid under pressure to anchor the whipstock. | 07-04-2013 |
20130168155 | DIAMOND ENHANCED DRILLING INSERT WITH HIGH IMPACT RESISTANCE - An insert for a drill bit may include a substrate; a working layer of polycrystalline diamond material on the uppermost end of the insert, wherein the polycrystalline diamond material includes a plurality of interconnected diamond grains; and a binder material; and an inner transition layer between the working layer and the substrate, wherein the inner transition layer is adjacent to the substrate; wherein the inner transition layer has a hardness that is at least 500 HV greater than the hardness of the substrate. | 07-04-2013 |
20130168156 | DIAMOND ENHANCED INSERT WITH FINE AND ULTRAFINE MICROSTRUCTURE OF PCD WORKING SURFACE RESISTING CRACK FORMATION - An insert for a drill bit may include a metallic carbide body; an outer layer of polycrystalline diamond material on the uppermost end of the insert, wherein the polycrystalline diamond material comprises: a plurality of interconnected diamond grains; a plurality of additive grains; a binder material; wherein the average additive grain size is smaller than the average diamond grain size. | 07-04-2013 |
20130168157 | THERMALLY STABLE POLYCRYSTALLINE ULTRAHARD MATERIAL REINFORCED WITH FIBROUS MATERIALS - A polycrystalline diamond construction includes a diamond body having a thermally stable diamond matrix comprising bonded-together diamond crystals, wherein the diamond matrix includes a diamond volume content of at least 99%, and a plurality of fibers extending through the thermally stable diamond matrix. The diamond construction may be bonded to a substrate forming a shear cutter. The shear cutter may be mounted on a bit body. | 07-04-2013 |
20130168158 | METHOD FOR BRAZE JOINING OF CARBONATE PCD - A method for making a diamond compact includes pre-heating a diamond body which includes a carbonate catalyst to convert at least a portion of the carbonate catalyst into an oxide, assembling the diamond body and a substrate, providing a braze material between the diamond body and the substrate to form a diamond compact, heating the braze material to melt the braze material and form a braze joint between the diamond body and the substrate, and cooling the braze material after increasing the pressure. A bit having a diamond compact including a carbonate catalyst and a metal oxide mounted thereon. | 07-04-2013 |
20130168159 | SOLID PCD CUTTER - A method of forming a cutting element may include placing a plurality of diamond particles adjacent to a substrate in a reaction cell; and subjecting the plurality of diamond particles to high pressure high temperature conditions to form a polycrystalline diamond body; wherein the polycrystalline diamond body comprises a cutting face area to thickness ratio ranging from 60:16 to 500:5; and wherein the polycrystalline diamond body has at least one dimension greater than 8 mm | 07-04-2013 |
20130175096 | PERCUSSION DRILLING ASSEMBLY AND HAMMER BIT WITH GAGE AND OUTER ROW REINFORCEMENT - A hammer bit for drilling a borehole in earthen formations. In an embodiment, the bit comprises a bit body having a bit axis and a bit face. The bit face includes an inner region extending from the bit axis to about 50% of the bit radius and an outer region extending from the inner region to the outermost radius. In addition, the bit comprises a plurality of gage cutter elements mounted to the bit face in a circumferential gage row in the outer region. Further, the bit comprises a plurality of adjacent to gage cutter elements mounted to the bit face in a circumferential adjacent to gage row in the outer region. The cutting profile of at least one cutter element in each row in the outer region radially overlaps with the cutting profile of at least one other cutter element in a different row in rotated profile view. | 07-11-2013 |
20130199785 | MULTI-CYCLE PIPE CUTTER AND RELATED METHODS - A downhole cutting tool includes a tool body and a plurality of cutter knife sets, each of the plurality of cutter knife sets configured to extend outwardly to separately perform a pipe cutting operation. A first cutter knife set has a diameter in an extended position larger than a diameter in an extended position of a second cutter knife set. A method includes running the downhole cutting tool into a wellbore, deploying the first set of expandable cutting arms to an extended position and engaging the extended expandable cutting arms with a first work piece, rotating the downhole cutting tool and cutting the first work piece, deploying the second set of expandable cutting arms during a single trip into the wellbore to an extended position and engaging the extended expandable cutting arms with a second work piece, and rotating the downhole cutting tool and cutting the second work piece. | 08-08-2013 |