Patent application number | Description | Published |
20080209818 | POLYCRYSTALLINE COMPOSITES REINFORCED WITH ELONGATED NANOSTRUCTURES - A sintered polycrystalline composite for cutting tools that includes a plurality of diamond or cubic boron nitride particles; a plurality of nanotube materials; and a refractory or binder material is disclosed. Methods of forming such polycrystalline composites that include integrating or mixing a plurality of nanotube materials with diamond or cubic boron nitride particle and/or refractory or binder particles are also disclosed. | 09-04-2008 |
20080210473 | 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 disclosed. Methods of making such composite bodies and drill bits formed of such material are also disclosed. | 09-04-2008 |
20080223623 | POLYCRYSTALLINE DIAMOND CONSTRUCTIONS HAVING IMPROVED THERMAL STABILITY - Polycrystalline diamond constructions include a diamond body comprising a matrix phase of bonded together diamond crystals formed at high pressure/high temperature conditions with a catalyst material. The sintered body is treated remove the catalyst material disposed within interstitial regions, rendering it substantially free of the catalyst material used to initially sinter the body. Accelerating techniques can be used to remove the catalyst material. The body includes an infiltrant material disposed within interstitial regions in a first region of the construction. The body includes a second region adjacent the working surface and that is substantially free of the infiltrant material. The infiltrant material can be a Group VIII material not used to initially sinter the diamond body. A metallic substrate is attached to the diamond body, and can be the same or different from a substrate used as a source of the catalyst material used to initially sinter the diamond body. | 09-18-2008 |
20080289881 | FIXED CUTTER BIT PARTIAL BLADE CONNECTION AT BIT CENTER - A fixed cutter drill bit including a bit body having a plurality of primary blades extending radially from a bit center area, wherein the bit center area includes a partial connection between at least two of the plurality of primary blades. The fixed cutter drill bit further including at least one cutter disposed on at least one of the blades. Additionally, a method of designing a fixed cutter drill bit includes modeling the fixed cutter drill bit, the fixed cutter drill bit including a plurality of primary blades extending radially from a bit center area, wherein the plurality of primary blades includes a plurality of cutters. The method further including determining a center of an innermost cutter on each primary blade, creating a partial connection between the primary blades, and outputting the model of the fixed cutter drill bit. | 11-27-2008 |
20080296070 | CUTTER GEOMETRY FOR INCREASED BIT LIFE AND BITS INCORPORATING THE SAME - An improved cutter for fixed cutter drill bits includes a base portion with a longitudinal axis that extends through a center of the base portion and a cutting face which is generally centered with the base portion. The cutting face has a periphery edge geometry comprising a first arcuate segment and a second arcuate segment spaced apart and arranged opposite each other with linear edge segments disposed there between forming sides of the cutting face. The cutting face spans a maximum edge-to-edge dimension L in a first direction that corresponds to a major axis of the cutting face. The cutting face spans a maximum edge-to-edge dimension W in a second direction, which is perpendicular to the first direction, and W is less than L. | 12-04-2008 |
20090152017 | POLYCRYSTALLINE DIAMOND CONSTRUCTION WITH CONTROLLED GRADIENT METAL CONTENT - Polycrystalline diamond constructions comprises a diamond body attached to a metallic substrate, and having an engineered metal content. The body comprises bonded together diamond crystals with a metal material disposed interstitially between the crystals. A body working surface has metal content of 2 to 8 percent that increases moving away therefrom. A transition region between the body and substrate includes metal rich and metal depleted regions having controlled metal content that provides improved thermal expansion matching/reduced residual stress. A point in the body adjacent the metal rich zone has a metal content that is at least about 3 percent by weight greater than that at a body/substrate interface. The metal depleted zone metal content increases gradually moving from the body, and has a thickness greater than 1.25 mm. Metal depleted zone metal content changes less about 4 percent per millimeter moving along the substrate. | 06-18-2009 |
20090166094 | 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. | 07-02-2009 |
20090173015 | Polycrystalline Diamond Constructions Having Improved Thermal Stability - Polycrystalline diamond constructions include a diamond body comprising a matrix phase of bonded together diamond crystals formed at high pressure/high temperature conditions with a catalyst material. The sintered body is treated remove the catalyst material disposed within interstitial regions, rendering it substantially free of the catalyst material used to initially sinter the body. Accelerating techniques can be used to remove the catalyst material. The body includes an infiltrant material disposed within interstitial regions in a first region of the construction. The body includes a second region adjacent the working surface and that is substantially free of the infiltrant material. The infiltrant material can be a Group VIII material not used to initially sinter the diamond body. A metallic substrate is attached to the diamond body, and can be the same or different from a substrate used as a source of the catalyst material used to initially sinter the diamond body. | 07-09-2009 |
20090178855 | THERMALLY STABLE POLYCRYSTALLINE DIAMOND CUTTING ELEMENTS AND BITS INCORPORATING THE SAME - Cutting elements are provided having substrates including end surfaces. TSP material layers extend over only a portion of the end surfaces or extend into the substrates below the end surfaces. Bits incorporating such cutting elements are also provided. | 07-16-2009 |
20090183925 | THERMALLY STABLE POLYCRYSTALLINE DIAMOND CUTTING ELEMENTS AND BITS INCORPORATING THE SAME - Cutting elements are provided having substrates including end surfaces. TSP material layers extend over only a portion of the end surfaces or extend into the substrates below the end surfaces. Bits incorporating such cutting elements are also provided. | 07-23-2009 |
20090283333 | MATRIX BIT BODIES WITH MULTIPLE MATRIX MATERIALS - A drill bit that includes a bit body having a plurality of blades extending radially therefrom, the bit body comprising a first matrix region and a second matrix region, wherein the first matrix region is formed from a moldable matrix material; and at least one cutting element for engaging a formation disposed on at least one of the plurality of blades is disclosed. | 11-19-2009 |
20100270088 | THERMALLY STABLE POLYCRYSTALLINE DIAMOND CUTTING ELEMENTS AND BITS INCORPORATING THE SAME - Cutting elements are provided having substrates including end surfaces. TSP material layers extend over only a portion of the end surfaces or extend into the substrates below the end surfaces. Bits incorporating such cutting elements are also provided. | 10-28-2010 |
20100300765 | MODIFIED CUTTERS AND A METHOD OF DRILLING WITH MODIFIED CUTTERS - A modified cutting element that includes a base portion, an ultrahard layer disposed on said base portion, and at least one modified region disposed adjacent to a cutting face of the cutter is described. In certain applications, the ultrahard layer comprises thermally stable polycrystalline diamond. | 12-02-2010 |
20110031030 | CUTTER HAVING SHAPED WORKING SURFACE WITH VARYING EDGE CHAMFER - 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 varied geometry along the edge. The average geometry of the chamfer varies with cutting depth. A depression in the shaped working surface is oriented with the varied chamfer and facilitates forming the varied chamfer. A non-planar interface has depressions oriented with depressions in the shaped working surface to provide support to loads on the working surface of the cutter when used. | 02-10-2011 |
20120199401 | THERMALLY STABLE POLYCRYSTALLINE DIAMOND CUTTING ELEMENTS AND BITS INCORPORATING THE SAME - Cutting elements have substrates including end surfaces. TSP material layers extend over only a portion of the end surfaces or extend into the substrates below the end surfaces. Bits incorporate such cutting elements. | 08-09-2012 |
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 |
20150021101 | 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. | 01-22-2015 |