Class / Patent application number | Description | Number of patent applications / Date published |
175432000 | With support detail | 72 |
20080223622 | Earth-boring tools having pockets for receiving cutting elements therein and methods of forming such pockets and earth-boring tools - Methods of forming cutting element pockets in earth-boring tools include machining at least one recess to define at least one surface of a cutting element pocket using a cutter oriented at an angle to a longitudinal axis of the cutting element pocket. Methods of forming earth-boring tools include forming a bit body and forming at least one cutting element pocket therein using a rotating cutter oriented at an angle relative to a longitudinal axis of the cutting element pocket being formed. Earth-boring tools have a bit body comprising a first surface defining a lateral sidewall of a cutting element pocket, a second surface defining an end wall of the cutting element pocket, and another surface defining a groove located between the first and second surfaces that extends into the body to enable a cutting element to abut against an area of the lateral sidewall and end wall of the pocket. | 09-18-2008 |
20080236900 | CUTTING ELEMENT APPARATUSES AND DRILL BITS SO EQUIPPED - A cutting element assembly for use on a rotary drill bit for forming a borehole in a subterranean formation. A cutting element assembly includes a cutting element having a substrate. The cutting element assembly additionally includes a superabrasive material bonded to the substrate. The substrate extends from an end surface to a back surface. A base member is also coupled to the back surface of the substrate. Additionally, a recess is defined in the base member and a structural element is coupled to the base member. The cutting element assembly also includes a biasing element configured to selectively bias the structural element. | 10-02-2008 |
20080264697 | Retention for an Insert - In one aspect of the present invention, a tensioning element adapted to connect a first object to a second object. The tensioning element comprising a breakaway tensile bearing interlocking geometry on a first end, a thread form on a second end, and a breakaway torque bearing feature affixed to the first end. | 10-30-2008 |
20090000827 | CUTTER POCKET HAVING REDUCED STRESS CONCENTRATION - A method for forming a drag bit using displacements having a rounded end that creates a cutter pocket having a rounded rear portion. The displacement may comprise an insert on the rounded end that remains in the drag bit during and after formation. A cutter element may then be attached to the upper portion of the insert. The rounded shape of the insert provides a more even force distribution. | 01-01-2009 |
20090057033 | HIGH ENERGY CUTTING ELEMENTS AND BITS INCORPORATING THE SAME - High energy cutting elements and bits incorporating the same are provided. The cutting elements have at least a portion of their cutting layers which will be exposed to high temperatures during drilling formed from a PCBN material capable of operating at temperatures of at least 1000° C. | 03-05-2009 |
20090095538 | Polycrystalline Diamond Composite Constructions Comprising Thermally Stable Diamond Volume - PCD composite constructions comprise a diamond body bonded to a substrate. The diamond body comprises a thermally stable diamond bonded region that is made up of a single phase of diamond crystals bonded together. The diamond body includes a PCD region bonded to the thermally stable region and that comprises bonded together diamond crystals and interstitial regions interposed between the diamond crystals. The PCD composite is prepared by combining a first volume of PCD) with a second volume of diamond crystal-containing material consisting essentially of a single phase of bonded together diamond crystals. A substrate is positioned adjacent to or joined to the first volume. The first and second volumes are subjected to high pressure/high temperature process conditions, during process the first and second volumes form a diamond bonded body that is attached to the substrate, and the second volume forms the thermally stable diamond bonded region. | 04-16-2009 |
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 |
20090152018 | POLYCRYSTALLINE DIAMOND COMPACTS, AND RELATED METHODS AND APPLICATIONS - Embodiments of the invention relate to polycrystalline diamond compacts (“PDCs”) and methods of fabricating such PDCs. In an embodiment of a “two-step” manufactured PDC, a PDC includes a substrate and a pre-sintered polycrystalline diamond (“PCD”) table bonded to the substrate. The pre-sintered PCD table includes bonded diamond grains defining interstitial regions. At least a portion of the interstitial regions include at least one material disposed therein selected from a silicon-cobalt alloy, silicon carbide, cobalt carbide, or a mixed carbide of silicon and cobalt. The pre-sintered PCD table lacks an intermediate contaminant region therein that includes at least one type of fabrication by-product generated during the fabrication of the pre-sintered PCD table. | 06-18-2009 |
20090178856 | Drill Bit and Cutter Element Having a Fluted Geometry - A drill bit for cutting a borehole having a borehole sidewall, corner and bottom, the drill bit comprises a bit body including a bit axis. 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 drill bit comprises at least one insert having a base portion secured in the rolling cone cutter and having a cutting portion extending therefrom. The cutting portion of the at least one insert has a cutting surface including at least one flute. | 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 |
20100012389 | METHODS OF FORMING POLYCRYSTALLINE DIAMOND CUTTERS - A method for forming a cutting element that includes forming at least one cavity in at least one surface of a polycrystalline abrasive body; placing the polycrystalline abrasive body adjacent a substrate such that an opening of at least one cavity is adjacent the substrate at an interface, wherein an interface surface of the substrate is non-mating with the polycrystalline abrasive body; and subjecting the polycrystalline abrasive body and substrate to high pressure/high temperature conditions is disclosed. | 01-21-2010 |
20100059290 | APPARATUS AND SYSTEM TO ALLOW TOOL PASSAGE AHEAD OF A BIT - Drill bits are enable the use of tools in a wellbore when it is undesirable or impossible to remove the drill bit. Drill bits include a drill bit insert, a latch assembly, a housing, a running tool, and a shaft trigger to operate the latch assembly. | 03-11-2010 |
20100126779 | CUTTING ELEMENT AND A METHOD OF MANUFACTURING A CUTTING ELEMENT - The present disclosure relates in one aspect to a cutting element comprising a substrate and a cutting layer disposed on a surface of the substrate. The cutting layer comprises an ultra hard material. The substrate comprises tungsten carbide and a metal binder. The substrate has a magnetic saturation value in the range of from 80% to less than 85%. In another aspect, the magnetic saturation value may increase within the substrate along a gradient, wherein proximal to the interface with the cutting layer, the substrate has a magnetic saturation value in the range of from 80% to less than 85%. Also included are drill bits incorporating such cutting elements. Additionally, the present disclosure relates to methods of manufacturing cutting elements. | 05-27-2010 |
20100219001 | ROLLING CUTTER - A cutting element for a drill bit that includes an outer support element having at least a bottom portion and a side portion; and an inner rotatable cutting element, a portion of which is disposed in the outer support element, wherein the inner rotatable cutting element includes a substrate and a diamond cutting face having a thickness of at least 0.050 inches disposed on an upper surface of the substrate; and wherein a distance from an upper surface of the diamond cutting face to a bearing surface between the inner rotatable cutting element and the outer support element ranges from 0 to about 0.300 inches is disclosed. | 09-02-2010 |
20100258355 | Self Positioning Cutter And Pocket - A self positioning cutter element and cutter pocket for use in a downhole tool having one or more cutting elements. The self positioning cutter element includes a substrate and a wear resistant layer coupled to the substrate. The cutter element includes a cutting surface, a coupling surface, and a longitudinal side surface forming the circumferential perimeter of the cutter element and extending from the cutting surface to the coupling surface. The cutter element has one or more indexes formed on at least a portion of the coupling surface. In some embodiments, the index also is formed on at least a portion of the longitudinal side surface. Hence, the coupling surface is not substantially planar. Additionally, at least a portion of the longitudinal side surface does not form a substantially uniform perimeter. The cutter pocket also is indexed to correspond and couple with the indexing of the cutter element. | 10-14-2010 |
20100300767 | Diamond Bonded Construction with Improved Braze Joint - Diamond bonded constructions comprise a body comprising a plurality of bonded together diamond grains with interstitial regions disposed between the grains that are substantially free of the catalyst material used to initially sinter the body. A metallic substrate is attached to the body, and a braze joint is interposed between the body and the substrate. The body is metallized to include a metallic material disposed along a substrate attachment surface in contact with the braze joint, wherein the metallic material is different from the braze joint material. The metallic material may exist within a region of the body extending fully or partially into the body, and/or may exist as a layer extending away from the substrate attachment surface. The body includes a working surface characterized by empty interstitial regions or by interstitial regions filled with an infiltrant material, wherein the infiltrant material is different from the metallizing material. | 12-02-2010 |
20110036641 | METHODS OF FORMING POLYCRYSTALLINE DIAMOND CUTTING ELEMENTS, CUTTING ELEMENTS, AND EARTH-BORING TOOLS CARRYING CUTTING ELEMENTS - Methods of forming polycrystalline diamond elements include forming a polycrystalline diamond compact comprising a cavity in a surface thereof. A catalyst is at least substantially removed from the polycrystalline diamond compact, and the polycrystalline diamond compact is secured to a supporting substrate. Cutting elements include a diamond table formed with a cavity in a back side surface thereof and a supporting substrate secured to the back side surface of the diamond table. Earth-boring tools comprise a bit body carrying one or more cutting elements including a diamond table, a supporting substrate and an adhesion layer comprising a superhard material between and bonding the cutting table and the supporting substrate. | 02-17-2011 |
20110036642 | NON-PLANAR INTERFACE CONSTRUCTION - A cutting element is provided, including a substrate and an ultra-hard material layer formed over the substrate. At one end of the substrate is an interface surface that interfaces with the ultra-hard material layer to bond the layer to the substrate. The interface surface includes a first or outer annular section that extends to the peripheral edge of the substrate, and a second or inner section that is radially inside the first section. The interface surface includes several spaced-apart projections arranged in an annular row. In one aspect, each projection has an upper surface that defines a groove bisecting the projection. In another aspect, the interface surface may include a bridge coupling adjacent projections. | 02-17-2011 |
20110067929 | POLYCRYSTALLINE DIAMOND COMPACTS, METHODS OF MAKING SAME, AND APPLICATIONS THEREFOR - In an embodiment, a polycrystalline diamond compact (“PDC”) comprises a cemented carbide substrate including a first cemented carbide portion exhibiting a first concentration of chromium carbide and a second cemented carbide portion bonded to the first cemented carbide portion and exhibiting a second concentration of chromium carbide that is greater than the first concentration. The PDC further comprises a polycrystalline diamond (“PCD”) table bonded to the first cemented carbide portion. The PCD table includes a plurality of bonded diamond grains exhibiting diamond-to-diamond bonding therebetween, with the plurality of bonded diamond grains defining a plurality of interstitial regions. The PCD table includes chromium present in a concentration less than about 0.25 weight %. | 03-24-2011 |
20110073380 | PRODUCTION OF REDUCED CATALYST PDC VIA GRADIENT DRIVEN REACTIVITY - A method of forming a PDC cutter having solvent metal catalyst located adjacent the diamond and/or in the diamond and a layer of reactive material on the layer of diamond, the layer of reactive material for promoting the flow of the solvent metal catalyst material from the layer of diamond under high pressure and high temperature. | 03-31-2011 |
20110120782 | POLYCRYSTALLINE DIAMOND COMPACT INCLUDING A SUBSTRATE HAVING A RAISED INTERFACIAL SURFACE BONDED TO A LEACHED POLYCRYSTALLINE DIAMOND TABLE, AND APPLICATIONS THEREFOR - In various embodiments, a polycrystalline diamond compact (“PDC”) comprises a substrate including an interfacial surface having a raised region. The PDC comprises a polycrystalline diamond (“PCD”) table bonded to the interfacial surface of the substrate. The PCD table defines an upper surface and exhibits a thickness over the raised region. The PCD table includes a plurality of bonded diamond grains defining a plurality of interstitial regions. A first region of the PCD table adjacent to the substrate includes metal-solvent catalyst disposed interstitially between the bonded diamond grains thereof, and a leached second region of the PCD table extends inwardly from the upper surface. The interstitial regions of the leached second region are depleted of metal-solvent catalyst. The geometry of the PCD table and raised region may be selected so that residual compressive stresses therein are retained to a sufficient level after leaching to provide a damage tolerant/thermally-stable PCD table. | 05-26-2011 |
20110308865 | DOWNHOLE CUTTING TOOL, CUTTING ELEMENTS AND METHOD - A cutting tool that has a leading or cutting surface that includes affixed thereto a plurality of irregular nine-faced polyhedrons or three-dimensional solid elements with nine faces, wherein each of the nine faces is a polygon and has a predetermined distance from each face to an opposing cutting edge and wherein the predetermined distance from each of the nine faces to its opposing cutting edge is equal for all of each of the nine faces, such that regardless of which of the nine faces is resting on a flat surface, the predetermined distance is the same. | 12-22-2011 |
20120012402 | Alloys With Low Coefficient Of Thermal Expansion As PDC Catalysts And Binders - A cutting table includes a lattice structure and a catalyst material deposited within voids formed within the lattice. The catalyst material is deposited in the voids during a sintering process that forms the lattice. The catalyst material has a coefficient of thermal expansion that is less than that of cobalt. The catalyst material is any one of chromium, tantalum, ruthenium, an alloy of cobalt, an alloy of a Group VIII metal and at least one non-catalyst metal, an alloy of two or more Group VIII metals, or a eutectic alloy. In certain embodiments, the catalyst material has a thermal conductivity that is greater than that of cobalt. In certain embodiments, the cutting table is bonded to a substrate, which is formed from a substrate material and a binder material. In some embodiments, the binder material and the catalyst material are the same; while in others, they are different. | 01-19-2012 |
20120261197 | POLYCRYSTALLINE DIAMOND COMPACTS INCLUDING AT LEAST ONE TRANSITION LAYER AND METHODS FOR STRESS MANAGEMENT IN POLYCRSYSTALLINE DIAMOND COMPACTS - Embodiments relate to polycrystalline diamond compacts (“PDCs”) that are less susceptible to liquid metal embrittlement damage due to the use of at least one transition layer between a polycrystalline diamond (“PCD”) layer and a substrate. In an embodiment, a PDC includes a PCD layer, a cemented carbide substrate, and at least one transition layer bonded to the substrate and the PCD layer. The at least one transition layer is formulated with a coefficient of thermal expansion (“CTE”) that is less than a CTE of the substrate and greater than a CTE of the PCD layer. At least a portion of the PCD layer includes diamond grains defining interstitial regions and a metal-solvent catalyst occupying at least a portion of the interstitial regions. The diamond grains and the catalyst collectively exhibit a coercivity of about 115 Oersteds or more and a specific magnetic saturation of about 15 Gauss·cm | 10-18-2012 |
20130000992 | COMPACTS FOR PRODUCING POLYCRYSTALLINE DIAMOND COMPACTS, AND RELATED POLYCRYSTALLINE DIAMOND COMPACTS - A method of forming a PDC cutter having solvent metal catalyst located adjacent the diamond and/or in the diamond and a layer of reactive material on the layer of diamond, the layer of reactive material for promoting the flow of the solvent metal catalyst material from the layer of diamond under high pressure and high temperature. Compacts for producing polycrystalline diamond compacts, and related polycrystalline diamond compacts are also disclosed. | 01-03-2013 |
20130068538 | CUTTING ELEMENTS FOR EARTH-BORING TOOLS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND RELATED METHODS - Cutting elements for earth-boring tools include one or more recesses and/or one or more protrusions in a cutting face of a volume of superabrasive material. The superabrasive material may be disposed on a substrate. The cutting face may be non-planar. The recesses and/or protrusions may include one or more linear segments. The recesses and/or protrusions may comprise discrete features that are laterally isolated from one another. The recesses and/or protrusions may have a helical configuration. The volume of superabrasive material may comprise a plurality of thin layers, at least two of which may differ in at least one characteristic. Methods of forming cutting elements include the formation of such recesses and/or protrusions in and/or on a cutting face of a volume of superabrasive material. Earth-boring tools include such cutting elements, and methods of forming earth-boring tools include attaching such a cutting element to a tool body. | 03-21-2013 |
20130118813 | CUTTING ELEMENTS HAVING LATERALLY ELONGATED SHAPES FOR USE WITH EARTH-BORING TOOLS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND RELATED METHODS - A cutting element for an earth-boring tool includes a volume of superabrasive material on a substrate. The cutting element has an elongated shape in a lateral dimension parallel to a front cutting face of the cutting element, and has a maximum lateral width in a first direction parallel to the front cutting face of the cutting element and a maximum lateral length in a second perpendicular direction parallel to the front cutting face of the cutting element. The maximum lateral length is significantly greater than the maximum lateral width. An earth-boring tool includes one or more such cutting elements mounted to a body of the earth-boring tool. A method of forming such an earth-boring tool includes selecting at least one such cutting element and mounting the cutting element to a body of an earth-boring tool. | 05-16-2013 |
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 |
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 |
20130175097 | CUTTING ASSEMBLY - A cutting assembly suitable for use on a drillable drill bit is described. The cutting assembly comprises one or more cutting members comprising one or more pre-formed pockets and one or more cutters located with the pre-formed pockets. A detachment facilitating feature is located at the interface between the cutting members and the cutters. The cutters of the drill bit are therefore mechanically robust for normal drilling operations but also facilitate detachment during a subsequent drill out procedure of the drill bit. | 07-11-2013 |
20130220707 | ROLLING CUTTER - A cutting element for a drill bit that includes an outer support element having at least a bottom portion and a side portion; and an inner rotatable cutting element, a portion of which is disposed in the outer support element, wherein the inner rotatable cutting element includes a substrate and a diamond cutting face having a thickness of at least 0.050 inches disposed on an upper surface of the substrate; and wherein a distance from an upper surface of the diamond cutting face to a bearing surface between the inner rotatable cutting element and the outer support element ranges from 0 to about 0.300 inches is disclosed. | 08-29-2013 |
20130228383 | ROTARY DRILL BIT INCLUDING POLYCRYSTALLINE DIAMOND CUTTING ELEMENTS - In an embodiment, a rotary drill bit includes a bit body having a leading end structure configured to facilitate drilling a subterranean formation, and a plurality of cutting elements mounted to the bit body. At least one of the plurality of cutting elements includes a polycrystalline diamond compact (“PDC”) comprising a cemented carbide substrate including a first cemented carbide portion and a second cemented carbide portion bonded to the first cemented carbide portion and exhibiting an erosion resistance that is greater than the first cemented carbide portion. The PDC further comprises a polycrystalline diamond (“PCD”) table bonded to the first cemented carbide portion. The PCD table includes a plurality of bonded diamond grains exhibiting diamond-to-diamond bonding therebetween, with the plurality of bonded diamond grains defining a plurality of interstitial regions. | 09-05-2013 |
20130248259 | SELF-SHARPENING CUTTING ELEMENTS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND METHODS OF FORMING SUCH CUTTING ELEMENTS - Cutting elements for earth-boring tools comprise a substrate including at least one material selected from the group consisting of CoCr, CoCrMo, CoCrW, Ti. A polycrystalline superabrasive material may be attached to the substrate. Earth-boring tools comprise a body. At least one cutting element is attached to the body. The cutting element comprises a substrate including at least one material selected from the group consisting of CoCr, CoCrMo, CoCrW, and Ti. A polycrystalline superabrasive material may be attached to the substrate. Methods of forming cutting elements for earth-boring tools comprise disposing a substrate including at least one material selected from the group consisting of CoCr, CoCrMo, CoCrW, and Ti in a container. Particles of superabrasive material may be disposed in the container. The particles of superabrasive material may be sintered with the substrate in the container to form a polycrystalline superabrasive material attached to the substrate. | 09-26-2013 |
20130248260 | 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 the cutter. The bearing element has a substantially uniform thickness across substantially an entire area thereof. The bearing element also limits the amount of unit force applied to a formation so that the formation does not fail. The bearing element may prevent damage to cutters associated therewith, as well as possibly limit problems associated with bit balling, motor stalling and related drilling difficulties. Bits including the bearing elements, molds for forming the bearing elements and portions of bodies of bits that carry the bearing elements, methods for designing and fabricating the bearing elements and bits including the same, and methods for drilling subterranean formations are also disclosed. | 09-26-2013 |
20130264125 | METHODS FOR FABRICATING POLYCRYSTALLINE DIAMOND COMPACTS USING AT LEAST ONE PREFORMED TRANSITION LAYER AND RESULTANT POLYCRYSTALLINE DIAMOND COMPACTS - Embodiments relate to polycrystalline diamond compacts (“PDCs”) that are less susceptible to liquid metal embrittlement damage due to the use of at least one transition layer between a polycrystalline diamond (“PCD”) layer and a substrate. In an embodiment, a PDC includes a PCD layer, a cemented carbide substrate, and at least one transition layer bonded to the substrate and the PCD layer. The at least one transition layer is formulated with a coefficient of thermal expansion (“CTE”) that is less than a CTE of the substrate and greater than a CTE of the PCD layer. At least a portion of the PCD layer includes diamond grains defining interstitial regions and a metal-solvent catalyst occupying at least a portion of the interstitial regions. The diamond grains and the catalyst collectively exhibit a coercivity of about 115 Oersteds or more and a specific magnetic saturation of about 15 Gauss·cm | 10-10-2013 |
20130333954 | PCD CUTTERS WITH IMPROVED STRENGTH AND THERMAL STABILITY - A thermally stable polycrystalline diamond cutter and method for fabricating the same. The cutter includes a substrate and a cutting table bonded thereto. The cutting table includes a cutting surface, a first beveled edge, a second beveled edge, a side surface, and an opposing surface that is adjacent to the substrate. The first beveled edge extends outwardly at a first angle from the cutting surface towards the substrate. The second beveled edge extends outwardly at a second angle from the first beveled edge towards the substrate. The side surface extends from the second beveled edge to the opposing surface. The cutting table is formed from a polycrystalline diamond structure having interstitial spaces disposed therebetween and a catalyst material disposed within the spaces in an untreated layer and not within a treated layer. The untreated layer includes the entire side surface. | 12-19-2013 |
20130341102 | Methods To Repair Worn Or Eroded PDC Cutters, Cutters So Repaired, And Use Of Repaired PDC Cutters In Drill Bits Or Other Tools - A repaired polycrystalline diamond cutter and method for fabricating the same. The cutter includes a damaged substrate that includes at least one void therein, a polycrystalline diamond table coupled to the damaged substrate, and a build-up compound disposed within the voids formed about the damaged substrate. The damaged substrate and the build-up compound collectively form a full circumference. The method includes obtaining a damaged cutter that includes a polycrystalline diamond table coupled to a damaged substrate having at least one void formed therein, bonding a build-up compound within the at least one void and forming a processed PDC cutter, and removing a portion of the build-up compound from the processed PDC cutter and forming the repaired cutter. | 12-26-2013 |
20140048341 | CUTTING ELEMENTS INCLUDING ADHESION MATERIALS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND RELATED METHODS - A cutting element for an earth-boring drill bit may include a thermally stable cutting table comprising a polycrystalline diamond material. The polycrystalline diamond material may consist essentially of a matrix of diamond particles bonded to one another and a silicon, silicon carbide, or silicon and silicon carbide material located within interstitial spaces among interbonded diamond particles of the matrix of diamond particles. The cutting table may be at least substantially free of Group VIII metal or alloy catalyst material. The cutting element may further include a substrate and an adhesion material between and bonded to the cutting table and the substrate. The adhesion material may include diamond particles bonded to one another and to the cutting table and the substrate after formation of the preformed cutting table. | 02-20-2014 |
20140069726 | Selectively Leached, Polycrystalline Structures for Cutting Elements of Drill Bits - The rate of leaching of a polycrystalline diamond (PCD) cutting layer for cutting elements or other wear parts is varied by introduction into the PCD of an additive prior to leaching. Selective introduction of the additive into one or more regions of a PCD cutting structure allows controlling leaching rates of selective leaching of parts of the PCD structure, which allows for creating of a boundary between the leached and non-leached regions of a PCD structure to be made so that is not parallel to the surface or surfaces exposed to the leaching solution. The additive is comprised of a material that increases the permeability of the PCD or acceptance of the PCD to the leaching solution, such as a hydrophile. | 03-13-2014 |
20140158436 | Methods To Repair Worn Or Eroded PDC Cutters, Cutters So Repaired, And Use Of Repaired PDC Cutters In Drill Bits Or Other Tools - A repaired polycrystalline diamond cutter and method for fabricating the same. The cutter includes a damaged substrate that includes at least one void therein, a polycrystalline diamond table coupled to the damaged substrate, and a paste compound disposed within the voids formed about the damaged substrate. The damaged substrate and the paste compound collectively form a full circumference. The method includes obtaining a damaged cutter that includes a polycrystalline diamond table coupled to a damaged substrate having at least one void formed therein, applying a paste compound within the at least one void, melting the paste compound via induction heating, bonding the paste compound to the substrate and forming a processed PDC cutter, and grinding at least a portion of the paste compound from the processed PDC cutter to form the repaired cutter. | 06-12-2014 |
20140158437 | POLYCRYSTALLINE DIAMOND COMPACTS - In an embodiment, a polycrystalline diamond compact includes a substrate, and a polycrystalline diamond (“PCD”) table bonded to the substrate and including an exterior working surface, at least one lateral surface, and a chamfer extending between the exterior working surface and the at least one lateral surface. The PCD table includes bonded diamond grains defining interstitial regions. The PCD table includes a first region adjacent to the substrate and a second leached region adjacent to the first region and extending inwardly from the exterior working surface to a selected depth. At least a portion of the interstitial regions of the first region include an infiltrant disposed therein. The interstitial regions of the second leached region are substantially free of metal-solvent catalyst. The second region is defined by the exterior working surface, the lateral surface, the chamfer, and a generally horizontal boundary located below the chamfer. | 06-12-2014 |
20140166371 | Selectively Leached Cutter - A method of manufacturing a polycrystalline diamond (PCD) cutting element used as drill bit cutting elements ( | 06-19-2014 |
20140174834 | ROLLING CUTTER WITH BOTTOM SUPPORT - A cutting element assembly includes a sleeve, a lining extending a distance axially from an end of the sleeve, and an inner cutter. The inner cutter has a cutting end, wherein the cutting end extends a depth from a cutting face, a side surface, and a body, wherein the body is at least partially disposed within the sleeve, and wherein the side surface of the cutting end interfaces with an interfacing surface of the lining. | 06-26-2014 |
20140196959 | DOWNHOLE DRILL BIT - A downhole cutting tool may include a tool body; a plurality of blades extending from the tool body; a first blade comprising at least one pointed cutting element thereon, the at least one pointed cutting element comprising a first polycrystalline diamond material on a first carbide substrate, the first polycrystalline diamond material extending away from the first carbide substrate to terminate in a substantially pointed geometry opposite the first carbide substrate; a second blade comprising at least one shear cutting element, the at least one shear cutting element comprising a second polycrystalline diamond material on a second carbide substrate, the second polycrystalline diamond material forming a planar cutting surface opposite the substrate; wherein, when the first blade and the second blade are superimposed on each other, a central axis of the at least one pointed cutting element is offset from a central axis of the at least one shear cutting element. | 07-17-2014 |
20140202774 | Wear Element for Downhole Tool with a Cold-Pressed Graphite Wear Layer - A wear element for a downhole, earth cutting tool for forming bore holes comprises a wear layer made of “cold pressed graphite” attached to a substrate comprised of, for example, a cemented metal carbide. Cold pressed graphite is, depending on the arrangement of carbon bonds, also referred to as M-carbon or W-carbon, cbt-c4, Z-Carbon and others. The wear element is formed by pressing with a previously formed cemented carbide substrate particles of one or more carbon allotropes, including, for example, SP2 bonded carbon allotropes, such as Fullerenes, carbon nanotubes, graphite, at pressures in excess of 1,000,000 pounds per square inch, or 6.89 Gigapascals, at a temperature substantially below 600 degrees Celsius. | 07-24-2014 |
20140231151 | OPTIMUM POWDER PLACEMENT IN POLYCRYSTALLINE DIAMOND CUTTERS - A precise and reproducible method of making a cutter element for a cutting tool includes positioning at least a first material layer of powder; a substrate and sintering. Whereby the positioning is performed by a fill to weight system, and comprises depositing the first material at a rate of about 1 mg per second to about 300 mg per second by the automated system. | 08-21-2014 |
20140238753 | CUTTING ELEMENTS INCLUDING NON-PLANAR INTERFACES, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND METHODS OF FORMING CUTTING ELEMENTS - Cutting elements for earth-boring tools may comprise a substrate, a polycrystalline table comprising superhard material secured to the substrate at an end of the substrate, and a non-planar interface defined between the polycrystalline table and the substrate. The non-planar interface may comprise a cross-shaped groove extending into one of the substrate and the polycrystalline table and L-shaped grooves extending into the other of the substrate and the polycrystalline table proximate corners of the cross-shaped groove. Transitions between surfaces defining the non-planar interface may be rounded. Methods of forming cutting elements for earth-boring tools may comprise forming a substrate to have a non-planar end. The non-planar end of the substrate may be provided adjacent particles of superhard material to impart an inverse shape to the particles. The particles may be sintered to form a polycrystalline table, with a non-planar interface defined between the substrate and the polycrystalline table. | 08-28-2014 |
20140246254 | METHODS OF ATTACHING CUTTING ELEMENTS TO CASING BITS AND RELATED STRUCTURES - A method of forming a casing bit includes positioning a cutting element adjacent an outer surface of a casing bit body. The cutting element has a superhard material and a bonding material that is used to bond the cutting element to a body of the casing bit. The bonding material may be a weldable or brazable metal alloy, and a welding process or a brazing process, respectively, may be used to bond the cutting elements to body of the casing bit. Casing bits fabricated using such methods may exhibit reduced bond strength between the cutting elements and the casing bit body. | 09-04-2014 |
20140262546 | POLYCRYSTALLINE DIAMOND DRILL BLANKS WITH IMPROVED CARBIDE INTERFACE GEOMETRIES - A cutting element and a method of making the superabrasive cutter are disclosed. The cutting element has a substrate and a superabrasive layer. The substrate has an inner face and an annular face. The inner face may have a center. The annular face may have a periphery. A superabrasive layer attaches to the substrate along the inner face and the annular face, wherein the inner face slopes outwardly and upwardly from the center at an angle ranging from between about 1° and about 7° from horizontal. | 09-18-2014 |
20140291036 | MULTILAYER STRUCTURED COATINGS FOR CUTTING TOOLS - In one aspect, cutting tools are described having coatings adhered thereto which, in some embodiments, can demonstrate desirable wear resistance and increased cutting lifetimes. A coated cutting tool described herein comprises a substrate and a coating adhered to the substrate, the coating having a multilayer structure including a plurality of structural units each comprising a bonding layer and an adjacent alumina layer, the alumina layer having a thickness of less than 0.5 μm and the bonding layer having a thickness less than 1 μm, the bonding layer comprising TiCN and TiAlOC. | 10-02-2014 |
20140291037 | DIAMOND BONDED CONSTRUCTION WITH IMPROVED BRAZE JOINT - Diamond bonded constructions comprise a body comprising a plurality of bonded together diamond grains with interstitial regions disposed between the grains that are substantially free of the catalyst material used to initially sinter the body. A metallic substrate is attached to the body, and a braze joint is interposed between the body and the substrate. The body is metallized to include a metallic material disposed along a substrate attachment surface in contact with the braze joint, wherein the metallic material is different from the braze joint material. The metallic material may exist within a region of the body extending fully or partially into the body, and/or may exist as a layer extending away from the substrate attachment surface. The body includes a working surface characterized by empty interstitial regions or by interstitial regions filled with an infiltrant material, wherein the infiltrant material is different from the metallizing material. | 10-02-2014 |
20140318873 | ROTATABLE CUTTING ELEMENTS AND RELATED EARTH-BORING TOOLS AND METHODS - Earth-boring tools may comprise rotatable cutting elements rotatably connected to protruding journals, which may be at least partially located within inner bores extending through the rotatable cutting elements. A rotationally leading end of one of the protruding journals may not extend beyond a cutting face of its associated rotatable cutting element. Alternatively, a protruding journal may comprise a chip breaker protruding from a cutting face of a rotatable cutting element. Methods of removing an earth formation may include directing cuttings forward, away from a cutting face of a rotatable cutting element then the cuttings reach an inner bore of the rotatable cutting element, and rotating the rotatable cutting element around a protruding journal at least partially located in the inner bore. | 10-30-2014 |
20140332286 | Diamond Cutting Elements for Drill Bits Seeded With HCP Crystalline Material - A polycrystalline diamond compact (PDC), which is attached or bonded to a substrate to form a cutter for a drill bit, is comprised of sintered polycrystalline diamond interspersed with a seed material which has a hexagonal close packed (HCP) crystalline structure. A region of the sintered polycrystalline diamond structure, near one or more of its working surfaces, which has been seeded with an HCP seed material prior to sintering, is leached to remove catalyst. Selectively seeding portions or regions of a sintered polycrystalline diamond structure permits differing leach rates to form leached regions with differing distances or depths and geometries. | 11-13-2014 |
20140332287 | POLYCRYSTALLINE COMPACTS INCLUDING INTERBONDED NANOPARTICLES, CUTTING ELEMENTS AND EARTH-BORING TOOLS INCLUDING SUCH POLYCRYSTALLINE COMPACTS, AND RELATED METHODS - Polycrystalline compacts include non-catalytic, non-carbide-forming particles in interstitial spaces between interbonded grains of hard material in a polycrystalline hard material. Cutting elements and earth-boring tools include such polycrystalline compacts. Methods of forming polycrystalline compacts include forming a polycrystalline material including a hard material and a plurality of particles comprising a non-catalytic, non-carbide-forming material. Methods of forming cutting elements include infiltrating interstitial spaces between interbonded grains of hard material in a polycrystalline material with a plurality of non-catalytic, non-carbide-forming particles. | 11-13-2014 |
20140338985 | POLYCRYSTALLINE DIAMOND COMPACT INCLUDING A SUBSTRATE HAVING A RAISED INTERFACIAL SURFACE BONDED TO A POLYCRYSTALLINE DIAMOND TABLE, AND APPLICATIONS THEREFOR - In various embodiments, a polycrystalline diamond compact (“PDC”) comprises a substrate including an interfacial surface having a raised region. In an embodiment, a PDC comprises a substrate including an interfacial surface having a generally cylindrical raised region and a peripheral region extending about the generally cylindrical raised region. The generally cylindrical raised region extends to a height above the peripheral region of about 450 μm or less. The PDC includes a PCD table bonded to the interfacial surface of the substrate. The PCD table includes an upper surface and at least one peripheral surface, and includes a plurality of bonded diamond grains defining interstitial regions. At least a portion of the interstitial regions includes a metallic constituent therein. | 11-20-2014 |
20140353047 | METHOD OF MAKING POLYCRYSTALLINE DIAMOND MATERIAL - A method of making polycrystalline diamond material includes providing a fraction of diamond particles or grains and a sintering additive, the sintering additive comprising a carbon source of nano-sized particles or grains, forming the diamond particles and sintering additive into an aggregated mass, consolidating the aggregated mass and a binder material to form a green body, and subjecting the green body to conditions of pressure and temperature at which diamond is more thermodynamically stable than graphite and for a time sufficient to consume the sintering additive, sintering it and forming polycrystalline diamond material that is thermodynamically and crystallographically stable and is substantially devoid of any nano-structures. | 12-04-2014 |
20140360791 | PCD Elements And Process For Making The Same - Catalyst in a sintered polycrystalline diamond (PCD) structure is dissolved in at least a portion of the structure by a liquid solvent metal. The structure is infused with the heated solvent and the solvent infiltrates interstitial spaces between consolidated diamond grains to contact residual catalyst from the sintering process. The dissolved catalyst passes to the bulk solvent and the solvent replaces the catalyst in the interstitial spaces. | 12-11-2014 |
20140360792 | SPLIT SLEEVES FOR ROLLING CUTTERS - A cutter assembly may include a multi-piece split sleeve, an inner cutting element having a groove or protrusion formed in a side surface thereof and disposed in the multi-piece split sleeve, and at least one component interfacing at least a portion of the groove or the protrusion to limit axial movement of the inner cutting element with respect to the multi-piece split sleeve, in which the multiple pieces of the split sleeve are joined together at an overlapping joint. | 12-11-2014 |
20150008048 | COATED PARTICLES AND RELATED METHODS - Cutting elements earth-boring tools may include a substrate and a polycrystalline diamond table secured to the substrate. At least a portion of the polycrystalline diamond table may be formed from a plurality of core particles comprising a diamond material and having an average diameter of between 1 μm and 500 μm. A coating material may be adhered to and covering at least a portion of an outer surface of each core particle of the plurality of core particles, the coating material being an amine terminated group. A plurality of nanoparticles selected from the group of carbon nanotubes, nanographite, nanographene, non-diamond carbon allotropes, surface modified nanodiamond, nanoscale particles of BeO, and nanoscale particles comprising a Group VIIIA element may be adhered to the coating material. | 01-08-2015 |
20150027787 | CUTTING ELEMENTS, RELATED METHODS OF FORMING A CUTTING ELEMENT, AND RELATED EARTH-BORING TOOLS - A cutting element comprises a supporting substrate, and a polycrystalline compact attached to an end of the supporting substrate. The polycrystalline compact comprises a region adjacent the end of the supporting substrate, and another region at least substantially laterally circumscribing the region and having lesser permeability than the region. A method of forming a cutting element, and an earth-boring tool are also described. | 01-29-2015 |
20150027788 | Cutter Support Element - Cutters mounted on bits for advancing boreholes are subject to extreme forces that can separate the cutter from the bit. A cutter backing element with a rearward extending lug and forward face can provide support to the cutter. The backing element is attached to the back face of the cutter and the lug of the backing element is received in a recess of the bit. The backing element can be brazed to the bit and the cutter. The lug is offset from a longitudinal axis of the backing element. Forces applied to the front of the cutter during drilling operations are transferred through the cutter to the backing element and to the bit through the offset lug. | 01-29-2015 |
20150053486 | CUTTING ELEMENTS, BEARINGS, AND EARTH-BORING TOOLS INCLUDING MULTIPLE SUBSTRATES ATTACHED TO ONE ANOTHER - Cutting elements for earth-boring tools may include a polycrystalline table attached to a portion of a first substrate on which the polycrystalline table was formed. The portion of the first substrate may exhibit a thickness less than a thickness of the first substrate before a remainder of the first substrate was removed to form the portion of the first substrate. Another substrate may be attached to the portion of the first substrate, the portion of the first substrate being interposed between the polycrystalline table and the other substrate. Earth-boring tools may include such cutting elements secured to bodies of the earth-boring tools. Bearings for earth-boring tools may include a polycrystalline table attached to a portion of a first substrate on which the polycrystalline table was formed, the polycrystalline table defining a contact surface. Another substrate may be attached to the portion of the first substrate, | 02-26-2015 |
20150308199 | ROCK BIT TIP AND ROCK BIT - A rock bit tip includes a mounting portion, an end portion converging from a top end of the mounting portion to form a work surface and at least one recess in a bottom of the mounting portion, the recess extending towards the end portion. Particularly, there are more than one recess. The disclosure further relates to a rock bit. | 10-29-2015 |
20150354284 | POLYCRYSTALLINE DIAMOND CUTTING ELEMENT AND BIT BODY ASSEMBLIES - A tool including a body defining a pocket, a cutting element in the pocket, at least one projection between an outside surface of the cutting element and an inside surface of the pocket, and a braze material between the cutting element and the pocket fixing the cutting element to the pocket. | 12-10-2015 |
20150361727 | POLYCRYSTALLINE DIAMOND COMPACT, AND RELATED METHODS AND APPLICATIONS - Embodiments of the invention relate to polycrystalline diamond compacts (“PDCs”) including a polycrystalline diamond (“PCD”) table in which cobalt is alloyed with phosphorous to improve the thermal stability of the PCD table. In an embodiment, a PDC includes a substrate and a PCD table including an upper surface spaced from an interfacial surface that is bonded to the substrate. The PCD table includes a plurality of diamond grains defining a plurality of interstitial regions. The PCD table further includes an alloy comprising at least one Group VIII metal and phosphorous. The alloy is disposed in at least a portion of the plurality of interstitial regions. | 12-17-2015 |
20160017665 | REDUCED LENGTH AND LOW COBALT CONTENT CUTTERS AND DRILL BIT MADE THEREWITH - A cutter for a fixed cutter drill bit includes a substrate and a cutting material surface affixed to one end of the substrate. The substrate comprises tungsten carbide having at least six percent by weight and at most ten percent by weight of cobalt. An overall length of the cutter is at most 10 millimeters. In one embodiment an overall length of the cutter is at most 8 millimeters. | 01-21-2016 |
20160084010 | GOUGING CUTTER STRUCTURE AND DRILL BIT MADE THEREWITH - A gouging cutter, includes a cutting element having a cutting end and a mounting feature displaced from the cutting end a cutter body affixable to a drill bit body. The cutter body has a corresponding mounting feature arranged to cooperate with the mounting feature on the cutting element to retain the cutting element to the cutter body so as to enable rotation of the cutting element therein. A drill bit may include a bit body having features to enable connection to a drill string and at least one of the foregoing gouging cutters mounted to the bit body. | 03-24-2016 |
20160097242 | POLYCRYSTALLINE DIAMOND COMPACT CUTTER - The polycrystalline diamond compact cutter includes a diamond table and a carbide substrate. Different zones of the diamond table with relative thermal stability and toughness to each other are arranged for a particular cutting efficiency and working life. A thermally stable zone has a metal formation agent removed and forms a top outer ring. A base zone bonds to the carbide substrate on the bottom surface of the diamond table. An anchor zone sets between the thermally stable zone and the base zone, and an absorbing zone extends from the top surface to the base zone. The absorbing zone is circumscribed by the thermally stable zone and the anchor zone. The weight percentage metal content of the anchor zone is less than weight percentage metal content of the base zone. The weight percentage metal content of the base zone is less than weight percentage metal content of the absorbing zone. | 04-07-2016 |
20160121429 | REPAIRING SUBSTRATES OF POLYCRYSTALLINE DIAMOND CUTTERS - A method of repairing a wear or cutting element of a tool, the tool comprising a sintered polycrystalline diamond compact (PDC) structure bonded to a cemented metal carbide substrate, an example of which is a PDC cutter for an earth-boring drill. One example of the method comprises heating a spot within the damaged area of the substrate while introducing the inlay material to the spot, resulting in the substrate at the spot being heated and the inlay material melting onto the spot, without heating the substrate to the point of causing graphitization or rupture of diamond-to-diamond bonds of the diamond structure. | 05-05-2016 |
20160201399 | MECHANICALLY LOCKING POLYCRYSTALLINE DIAMOND ELEMENT AND INDUSTRIAL DEVICE | 07-14-2016 |
20190145181 | DIAMOND CUTTING ELEMENTS FOR DRILL BITS SEEDED WITH HCP CRYSTALLINE MATERIAL | 05-16-2019 |
20190145182 | CUTTING ELEMENT ASSEMBLIES AND DOWNHOLE TOOLS COMPRISING ROTATABLE AND REMOVABLE CUTTING ELEMENTS AND RELATED METHODS | 05-16-2019 |