| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 175374000 |
Specific or diverse material
| 84 |
| 175371000 |
With bearing or seal details
| 48 |
| 175336000 |
Rolling cutter bit with fixed cutter
| 31 |
| 175339000 |
With drilling fluid conduit details
| 23 |
| 175341000 |
Plural rolling cutters with intermeshing teeth
| 6 |
| 175369000 |
Stub axle cutter securing means | 5 |
| 20140034394 | BALL HOLE WELDING USING THE FRICTION STIR WELDING (FSW) PROCESS - A roller cone drill bit includes a bit body, at least one leg extending downward from the bit body, a journal on each leg, and a roller cone mounted on each journal. A ball race is configured between each journal and roller cone, and a plurality of retention balls is disposed within each ball race. A ball hole extends from the back face of each leg to the ball race, and a ball hole plug fits within the ball hole. The ball hole plug is secured to the leg by a friction stir weld. | 02-06-2014 |
| 20100071959 | THREADED CONE RETENTION SYSTEM FOR ROLLER CONE BITS - An apparatus and method for retaining a roller cone on a bearing pin of a drillbit body. | 03-25-2010 |
| 20100078224 | BALL HOLE WELDING USING THE FRICTION STIR WELDING (FSW) PROCESS - A roller cone drill bit includes a bit body, at least one leg extending downward from the bit body, a journal on each leg, and a roller cone mounted on each journal. A ball race is configured between each journal and roller cone, and a plurality of retention balls is disposed within each ball race. A ball hole extends from the back face of each leg to the ball race, and a ball hole plug fits within the ball hole. The ball hole plug is secured to the leg by a friction stir weld. | 04-01-2010 |
| 20100139987 | REAL TIME DULL GRADING - A method of monitoring the wear of drill bits for drilling wells in earth formations, several embodiments of an improved drill bit for drilling a well in an earth formation, and methods of manufacture. In one embodiment, the bit is assembled by forming the bit, including a bit body and a plurality of cutting components; introducing a wear detector into the bit; and providing a module to monitor the wear detector and generate an indication of bit wear. The wear detector may be one or more electrical circuits that may experience a change in resistance or conductivity due to wear of the bit. The module may determine wear by detecting an open circuit. The wear detector may be introduced during or after formation of the bit. The bit wear may be displayed for an operator. | 06-10-2010 |
| 20140020956 | CUTTING ELEMENT APPARATUSES, DRILL BITS INCLUDING SAME, METHODS OF CUTTING, AND METHODS OF ROTATING A CUTTING ELEMENT - A subterranean drilling system may include a drill string and a rotary drill bit coupled to the drill string. The rotary drill bit may include a bit body and a cutting element coupled to the bit body, with the cutting element being structured to rotate in response to torque applied to the cutting element. The system also may include a cam assembly coupled to the drill string, a cam follower assembly in contact with a cam surface of the cam assembly, and a torque-applying structure coupled to the cam follower assembly. The torque-applying structure may be configured to apply torque to the cutting element in response to relative rotation between the cam assembly and the cam follower assembly. | 01-23-2014 |
| 175355000 |
Circumferentially displaced cutter axes | 5 |
| 20120193150 | METHOD AND APPARATUS FOR REDUCING LUBRICANT PRESSURE PULSATION WITHIN A ROTARY CONE ROCK BIT - A drill tool includes a bit body, at least one bearing shaft extending from the bit body and a cone mounted for rotation on the bearing shaft. An outer bearing surface of the bearing shaft includes a non-loading zone. A first groove and a second groove are formed in the outer bearing surface at the non-loading zone. The first and second grooves are both circumferentially offset from each other and axially offset from each other. One or more of the grooves includes an opening for making a fluid connection to an internal lubricant channel within this bearing shaft. The circumferential and axial offsetting of the first and second grooves define a plurality of attenuation zones that function to restrict propagation of a cone pumping pressure pulse towards a sealing system of the drill tool. | 08-02-2012 |
| 20120193151 | METHOD AND APPARATUS FOR REDUCING LUBRICANT PRESSURE PULSATION WITHIN A ROTARY CONE ROCK BIT - A drill tool comprises includes a bit body, at least one bearing shaft extending from the bit body and a cone mounted for rotation on the bearing shaft. The bearing system for the tool includes a radial thrust bearing from which cone pumping pressure pulsation originates. A lubricant sealing system including an annular seal gland and a seal ring retained within the annular seal gland functions to retain lubricant in the bearing system. The tool further includes a lubricant cone pumping pressure restrictor system formed by an annular gland (separate from the annular seal gland) and a pressure restricting ring retained within the annular gland. The lubricant cone pumping pressure restrictor system is positioned between the radial thrust bearing system and the lubricant sealing system and is adapted to attenuate cone pumping lubricant pressure pulsation from acting on the seal ring retained within the annular seal gland. | 08-02-2012 |
| 20130105229 | Cone Retention and Tapered Bearing Preload System for Roller Cone Bit | 05-02-2013 |
| 20100206638 | HOLE OPENER ASSEMBLY AND A CONE ARM FORMING A PART THEREOF - An improved hole opener assembly for horizontal drilling is disclosed that is less prone to failure as a result of cone arm break out or pocket side wall fracture. The interface between the cone arm and the pocket employs a key and slot configuration with a tighter fit than between the arm and the pocket to reduce the stress on the pocket side wall during drilling. | 08-19-2010 |
| 20140202773 | Roller bit for rock breaking by rotary cutting - A roller bit for rock breaking by rotary cutting comprises: a bit body ( | 07-24-2014 |
| 175350000 |
Laterally offset cutter axis | 5 |
| 20110024197 | HIGH SHEAR ROLLER CONE DRILL BITS - A drill bit may include a bit body, comprising: at its upper end, a connection adapted to connect to a drill string; at its lower end, a plurality of journals extending downwardly and radially outward from a longitudinal axis of the bit; a plurality of roller cones rotatable mounted on the plurality of journals; and at least three rows of cutting elements disposed on each of the plurality of roller cones, wherein an outermost row has an extension height to diameter ratio greater than a mid row, and the mid has an extension height to diameter ratio greater than an innermost row. | 02-03-2011 |
| 20150101868 | BALANCING OF DRILL BITS - A method including of manufacturing a drill bit includes inputting bit characteristics into a simulator. The bit characteristics may include a drill bit mass, coordinates of the bit center of gravity, and an inertia tensor of the bit. The bit center of gravity and a vector of the inertia tensor may be aligned with a bit axis in the simulator. Based on the alignment of the center of gravity and the inertia tensor with the bit axis, new bit characteristics may be determined. A drill bit with the new bit characteristics may be produced. | 04-16-2015 |
| 20090065261 | CUTTING ELEMENTS OF GAGE ROW AND FIRST INNER ROW OF A DRILL BIT - A rolling cone drill bit is provided that has gage inserts on the first row from the bit axis to cut to full gage diameter that have a cutting portion enhanced with a layer of super abrasive material. The gage cutting surface has a center axis that is canted to be more normal to the gave curve such that its point of contact at gage is away from the thinner portion of the layer of super abrasive material. | 03-12-2009 |
| 20100018777 | DYNAMICALLY STABLE HYBRID DRILL BIT - An earth-boring bit comprising a bit body configured at its upper extent for connection into a drillstring. A selected number of fixed blades extend downward from the bit body and a selected number of rolling cutters are mounted for rotation on the bit body. A plurality of rolling-cutter cutting elements are arranged on each rolling cutter and a plurality of fixed-blade cutting elements are arranged on each fixed blade. The selected number of fixed blades exceeds the selected number of rolling cutters by at least one. | 01-28-2010 |
| 20150090501 | ROLLER CUTTER DRILL BIT WITH MIXED BEARING TYPES - A roller cutter drill bit with mixed bearing types includes a bit body with at least one journal facet and a cavity facet. A cavity extends into the bit body from the cavity facet. The bit body is configured to rotate about a bit axis during drilling. A journal extends outward from the at least one journal facet. A first rotatable cutter that supports a first plurality of cutting structures has a journal portion received by the cavity. A second rotatable cutter that supports a second plurality of cutting structures has a cavity portion that is receives the journal. | 04-02-2015 |
| 175334000 |
Bit with leading cutter forming smaller diameter initial bore | 4 |
| 20080289880 | Fixed cutter bit and blade for a fixed cutter bit and methods for making the same - A blade, which is useful on a tool that impinges earth strata, that has a blade body with a leading surface. The blade body has a first portion defining at least a part of the leading surface and a second portion. The first portion is made of a first material composition and the second portion is made of a second material composition. | 11-27-2008 |
| 20090166093 | Reamer With Stabilizers For Use In A Wellbore - A reamer bit for use in earth boring operations comprising a body, cutter mounts having rolling cutters on the bit body, and stabilizers pads on the body placed between adjacent cutter mounts. The reamer may further include a pilot bit on a drill pipe extending downward from the reamer body. The reamer bit outer periphery with its stabilizers and bit body has a radial profile approximating a circle thereby reducing dynamic perturbations during drilling operations. | 07-02-2009 |
| 20110079440 | 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 coupled to the body, a rolling cutter rotatably coupled to the mount, and a fixed blade coupled to the body adjacent the mount. A method of forming a hybrid reamer tool for downhole use may include providing a tubular stem having couplers on the upper and lower ends, coupling a reamer body having an outer periphery to the stem between the stem upper and lower ends, coupling a rolling cutter mount to the outer periphery of the reamer body, the mount having a rolling cutter rotatably coupled thereto, and coupling a fixed blade to the outer periphery of the reamer body adjacent the rolling cutter mount. | 04-07-2011 |
| 20140262536 | 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 plurality of blades has a blade profile including a nose. A plurality of cutting elements are disposed on the plurality of blades, including a plurality of non-planar cutting elements and a plurality of rotatable cutting elements, wherein the plurality of non-planar cutting elements are disposed in a non-planar cutting element region on at least one of the blades between the longitudinal axis and the nose | 09-18-2014 |
| 175378000 |
Irregular tooth cutter row | 4 |
| 20090044985 | SYSTEM, METHOD, AND APPARATUS FOR PREDICTING TRACKING BY ROLLER CONE BITS AND ANTI-TRACKING CUTTING ELEMENT SPACING - Embodiments of a system, method, and apparatus for predicting and reducing tracking by roller cone bits by adjusting compact spacing are disclosed. Different pitches between adjacent compacts or teeth provide a cone row that is substantially less likely to track. A given row on a cone may include compacts that are arrayed at a single pitch in a contiguous group for approximately half of the row. The remaining approximately half of the row includes alternating pitches. This configuration enables anti-tracking behavior without very wide spaces and consequent breakage and wear seen in prior art anti-tracking pitch schemes. | 02-19-2009 |
| 20110083906 | Fixed Bladed Drill Bit Force Balanced by Blade Spacing - In one aspect of the present invention a force balanced drill bit may comprise a bit body comprising a plurality of fixed blades, each blade comprising cutters defining a cutter profile. Junk slots may be disposed between the blades and define the blade boundaries. The blade boundaries may be spaced apart sufficiently to achieve force balance. | 04-14-2011 |
| 20110315454 | Anti-Tracking Feature for Rock Bits - The harmful effects of tracking are reduced for a drill bit having roller cones with at least one of the outermost rows of active teeth containing one or more teeth having a height that does not extend to the height of at least one of the outermost rows on another roller cone on the bit. The crest on this tooth may have a length in a circumferential direction that is wider than an overall width of the tooth in the outer to inner direction. The invention may be used on any cutter row, not just the outermost row. The design may be used on a different roller cone or row, or more than one cutter row. The anti-tracking feature may be located between the leading and trailing edges of the tooth on one or more roller cones. | 12-29-2011 |
| 20150376951 | ROLLING CONE DRILL BIT HAVING HIGH DENSITY CUTTING ELEMENTS - A rolling cone drill bit for drilling in earthen formations. In an embodiment, the drill bit comprises a plurality of rolling cone cutters. Each cone cutter includes a plurality of gage cutting elements, a first plurality of bottomhole cutting elements, and a second plurality of bottomhole cutter elements. Each of the first plurality of bottomhole cutting elements is staggered relative to the gage cutting elements on each cone cutter, and the profiles of the gage cutting elements and the first plurality of bottomhole cutting elements on each cone cutter overlap in rotated profile view. Each of the second plurality of bottomhole cutting elements is staggered relative to the first plurality of bottomhole cutting elements on at least one cone cutter, and the profiles of the first plurality of bottomhole cutting elements and the second plurality of bottomhole cutting elements on at least one cone cutter overlap in rotated profile view. | 12-31-2015 |
| 175338000 |
With rotary or endless carrier | 3 |
| 20100006343 | EARTH-BORING TOOLS HAVING FEATURES FOR AFFECTING CUTTINGS FLOW AND METHODS OF FORMING THE SAME - An earth-boring bit has a bit body having a plurality of bit legs extending longitudinally therefrom, each bit leg comprising one or more groove regions formed along a laterally outer surface thereof. Each groove region comprises a fluid course for drilling fluid and cuttings to pass across the outer surface. A ridge may be disposed adjacent a lower edge of one or more of the groove regions. Each groove region may also be positioned at differing heights on the bit legs. Methods of forming earth-boring bits are also disclosed. | 01-14-2010 |
| 20110284293 | ROLLING CUTTER BIT DESIGN - A cutting tool having a tool body with a plurality of blades extending radially therefrom and a plurality of rotatable cutting elements mounted on at least one of the plurality of blades is disclosed, wherein the plurality of rotatable cutting elements are mounted on the at least one blade utilizing multiple side rake angles. | 11-24-2011 |
| 20120132471 | ROLLING CUTTER PLACEMENT ON PDC BITS - A cutting tool cutting tool may include a tool body having a plurality of blades extending radially therefrom; and a plurality of rotatable cutting elements mounted on at least one of the plurality of blades, wherein the plurality of rotatable cutting elements are mounted on the at least one blade in a nose and/or shoulder region of the cutting tool at a side rake angle ranging from about 10 to about 30 degrees or −10 to about −30 degrees | 05-31-2012 |
| 175344000 |
Noncutting portion forwardly of rolling cutter (e.g., reamer) | 3 |
| 20090065260 | HARDFACING CONTAINING FULLERENES FOR SUBTERRANEAN TOOLS AND METHODS OF MAKING - An earth boring bit comprising, a bit body, a cantilevered bearing shaft depending from the bit body, a cutter mounted for rotation on the bearing shaft, a plurality of cutting elements disposed on the cutter, and hardfacing affixed to the bit, wherein the hardfacing comprises a mixture of carbide materials, a matrix of iron, nickel, cobalt and alloys thereof, and an amount of fullerene material. The amount of fullerene material added to the mixture may range from up to about 0.05 percent by weight to about 15 percent by weight. | 03-12-2009 |
| 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 |
| 20100307837 | CASING BIT AND CASING REAMER DESIGNS - A casing end tool has a bowl-like (or cup-like) body defined by a wall having an outer convex surface and an inner concave surface opposite of the outer convex surface. The bowl-like body has a center axis. The inner concave surface is non-axisymmetric with respect to the center axis, while the outer convex surface is axisymmetric with respect to the center axis. The non-axisymmetric configuration is provided in one implementation through the presence of a set of raised boss or land structures formed on the inner concave surface. In another implementation, the non-axisymmetric configuration is provided by channels formed in the inner concave surface | 12-09-2010 |
| 175342000 |
Adjustable cutter element | 2 |
| 20100133015 | Rotary Drill Bit with Improved Steerability and Reduced Wear - A rotary drill bit having blades with cutting elements disposed on exterior portions thereof may be formed with either a continuous cutting zone or a substantially continuous cutting zone between the last cutting element on each blade and an adjacent gage pad. Such rotary drill bits may have improved steerability during the formation of a directional wellbore and/or may experience substantially reduced wear on gage pads and/or portions of each blade adjacent to respective gage pads. For some rotary drill bits an additional cutter may be disposed in one or more gage pads adjacent to the last cutting element. For other rotary drill bits a gage cutter may be disposed between and in close proximity to both the last cutting element and adjacent portions of the associated gage pad. | 06-03-2010 |
| 20130248256 | DRILL BIT OPTIMIZATION BASED MOTION OF CUTTERS - A method of designing a drill bit includes: defining a representation of a first drill bit including at least a first cutter having a first face, the first cutter being disposed on the representation of the first drill bit in a first orientation; simulating in a first simulation on a computing device off-axis rotation of the first drill bit in a simulated subterranean formation; determining that the first face included, during the first simulation, a first face orientation direction that was oriented different than a face cutting direction by an amount that exceeds a predetermined threshold; and defining the first drill bit such that the first cutter is disposed in a second orientation. | 09-26-2013 |
| 175373000 |
Disk cutter | 2 |
| 20130014999 | PDC DISC CUTTERS AND ROTARY DRILL BITS UTILIZING PDC DISC CUTTERS - A disc cutter and a downhole tool including disc cutters therein. The disc cutter is disc-shaped and includes a lower portion and an upper portion. The lower portion is fabricated using a substrate material. At least a portion of the upper portion's perimeter is fabricated using at least one of polycrystalline diamond, synthetic diamond grit, natural diamond grit, and cubic boron nitride. According to certain exemplary embodiments, the disc cutter also includes an intermediate layer, which is fabricated from the substrate material, extending outwardly from at least a portion of the lower portion to a distal end positioned within the upper portion. In alternative exemplary embodiments, the disc cutter is disc-shaped and includes an inner portion made of substrate material, an outer portion made of at least one of polycrystalline diamond, synthetic diamond grit, natural diamond grit, and cubic boron nitride, and a channel extending orthogonally through the inner portion. | 01-17-2013 |
| 20140251696 | CUTTER ASSEMBLIES, DISC CUTTERS, AND RELATED METHODS OF MANUFACTURE - In an embodiment, a cutter assembly for use on a tunnel boring machine may include a cutter ring extending circumferentially about a central axis. The cutter ring may include a radially inner surface and a radially outer surface. The cutter assembly may also include superabrasive cutting elements distributed circumferentially about the axis. Each of the superabrasive cutting elements may be attached to the cutter ring and may include a polycrystalline diamond (“PCD”) body having a working surface. At least a number of the cutting elements may extend beyond the outer surface of the cutter ring. | 09-11-2014 |
| 175337000 |
With drilling fluid supply to bearing | 2 |
| 20130105228 | Grease Distribution System for Roller Cone Bit Passing through a Retaining Bore in the Head | 05-02-2013 |
| 20150047911 | USING MAGNETIC FORCE/FIELD FOR DRILL BITS AND OTHER CUTTING TOOLS - A cutting element assembly includes a rotatable cutting element having an axis of rotation extending axially therethrough, a cutting face and a body extending axially downward from the cutting face, at least one retention mechanism disposed adjacent to the rotatable cutting element, and a first magnet disposed at a back face of the rotatable cutting element. | 02-19-2015 |
| 175367000 |
Detachable stub axle, bushing or bearing | 2 |
| 20090173546 | EARTH BIT WITH HUB AND THRUST UNITS - An earth bit includes a cone rotatably mounted to a shaft with a hub unit and thrust roller bearings. The hub unit is moveable between mounted and unmounted positions on the shaft, as a single unit, in a repeatable manner. The hub unit includes a pair of roller bearings positioned between inner and outer races. The outer race includes a recess extending around its outer periphery. A sealing structure is slidingly engaged with the recess to provide a seal between the cone and shaft. | 07-09-2009 |
| 20120273279 | Core Barrel and Related Drilling Apparatus and Method - There is disclosed herein drilling apparatus, in particular for use in the field of oil prospecting, comprising: a first tubular member ( | 11-01-2012 |
| 175332000 |
Core forming-type bit | 2 |
| 20130112485 | PLOW-SHAPED CUTTING ELEMENTS FOR EARTH-BORING TOOLS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND RELATED METHODS - A cutting element for an earth-boring tool includes at least one volume of superabrasive material on a substrate. The volume of superabrasive material includes a first planar surface and a second planar surface oriented at an angle relative to the first planar surface and intersecting the first planar surface along an apex. The first planar surface has a circular or oval shape having a first maximum diameter, and the second planar surface has a circular or oval shape having a second maximum diameter. The apex has a length less than the first maximum diameter and the second maximum diameter. Earth-boring tools includes such a cutting element attached to a body. Methods of forming earth-boring tools include the attachment of such a cutting element to a body of an earth-boring tool. | 05-09-2013 |
| 20130186693 | 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 over the bore face from disruption caused by the impact elements. | 07-25-2013 |
| 175354000 |
Axle rotatable with cutter | 1 |
| 20140054094 | ROLLING CUTTER WITH CLOSE LOOP RETAINING RING - A cutting element is disclosed that includes a sleeve, a rotatable cutting element, and at least one retaining ring. The sleeve has a first inner diameter and a second inner diameter, wherein the second inner diameter is larger than the first inner diameter and located at a lower axial position than the first inner diameter. The rotatable cutting element has an axis of rotation extending therethrough, a cutting face, a body extending axially downward from the cutting face, wherein the body has a shaft that is disposed within the sleeve, and a circumferential groove formed around an outer surface of the shaft. The at least one retaining ring is disposed in the circumferential groove and extends at least around the entire circumference of the shaft, wherein the at least one retaining ring protrudes from the circumferential groove, thereby retaining the rotatable cutting element within the sleeve. | 02-27-2014 |
| 175365000 |
Outwardly directed stub axle | 1 |
| 20140326515 | ROTATING CUTTING ELEMENTS FOR PDC BITS - A drill bit has a bit body, a plurality of blades extending radially from the bit body, at least one rolling cutter pocket disposed on the plurality of blades, and at least one rolling cutter, wherein each rolling cutter is disposed in one of the rolling cutter pockets, and wherein a side surface of the rolling cutter pocket and an outer circumferential surface of the rolling cutter have at least one mating lip and channel formed therein. Further, the rolling cutter may include a cavity extending at least partially along a rotational axis through the rolling cutter, from a bottom surface of the rolling cutter, and a retention pin disposed within the cavity. | 11-06-2014 |
| 175366000 |
Separable support for stub axle | 1 |
| 20140326516 | ROLLING CUTTER WITH SIDE RETENTION - A cutter assembly may include a sleeve having at least one passageway extending through the sleeve from a outer surface thereof into an inner surface thereof; at least one rotatable cutting element disposed in the sleeve, wherein the at least one rotatable cutting element has a circumferential groove formed in a side surface thereof, wherein when the inner rotatable cutting element is disposed in the sleeve, the circumferential groove is aligned with the passageway; and a retention element disposed in at least a portion of the passageway and the circumferential groove to retain the at least one rotatable cutting element in the sleeve, wherein the retention element has an axis that is parallel to a tangent of the rotatable cutting element side surface at least one point of contact with the rotatable cutting element. | 11-06-2014 |
| 175377000 |
Spiral rib or tooth row | 1 |
| 20080245577 | System, method, and apparatus for contoured thrust surfaces between thrust washer and head for roller cone drill bit - A thrust washer located between the thrust surfaces of the head and the cone of a drill bit allows for radial rotation between the cone, thrust washer, and head during drilling operations. The thrust washer also accommodates axial rotation between the cone and the head. The mating thrust surfaces between the thrust washer and the head are contoured to allow the thrust washer to rotate axially with the cone, and provide increased bearing contact between the thrust washer and the cone. | 10-09-2008 |
| 175348000 |
Longitudinal axis cutter | 1 |
| 20190145175 | EARTH-BORING DRILL BITS WITH CONTROLLED CUTTER SPEED ACROSS THE BIT FACE, AND RELATED METHODS | 05-16-2019 |
| 175361000 |
Cross axle | 1 |
| 20100126778 | CUTTER ASSEMBLY FOR A RAISE BORING REAMER - A raise boring reamer assembly includes a saddle, and a journal assembly carried by the saddle. The journal assembly includes nose and gage shanks, and a cutter is carried by the journal assembly. Nose and gage wiper rings are positioned proximate to the nose and gage shanks, respectively. The nose and gage wiper rings move debris in opposed directions in response to the rotation of the cutter. | 05-27-2010 |
| Entries |
| Document | Title | Date |
|---|
| 20080202817 | Hardfacing Around Ball Loading Hole for Earth-Boring Bit - A rotary cone earth boring bit has at least one bit leg with a cone retaining ball passage that intersects an outer surface of the bit leg and is closed by a ball plug. An upwardly curved lower hardfacing bead is on the outer surface of the bit leg at least partially below the ball plug. A downwardly curved upper hardfacing bead is on the outer surface of the bit leg at least partially above the ball plug. The upper hardfacing bead has leading and trailing ends that join the lower hardfacing bead. The upper and lower hardfacing beads define a generally elliptical perimeter surround the ball plug. At least one transverse bead is above the upper hardfacing bead and leads generally upwardly and circumferentially from a leading edge of the bit leg to a trailing edge of the bit leg. | 08-28-2008 |
| 20080308320 | Drill Bit and Cutting Element Having Multiple Cutting Edges - A drill bit for cutting a borehole through an earthen formation comprises a bit body having 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 an insert having a base portion secured in the rolling cone cutter and having a cutting portion extending therefrom, the insert having an initial impact direction. The cutting portion of the insert has a cutting surface comprising a planar surface defining an extension height. Moreover, the cutting portion of the insert comprises an indentation extending at least partially through the upper planar surface, the indentation including a forward facing formation engaging surface and a lower surface defining a depth of the indentation. | 12-18-2008 |
| 20100163312 | Rotary Drill Bits with Gage Pads Having Improved Steerability and Reduced Wear - A rotary drill bit having blades with gage pads disposed on exterior portions thereof to improve steerability of the rotary drill bit during formation of a directional wellbore without sacrifice of lateral stability. One or more of the gage pads may include radially tapered exterior portions and/or cut out portions to assist with reducing wear of the associated gage pad. For some applications, a rotary drill bit may be formed having blades with gage pads having a relatively uniform exterior surface. Hard facing material and/or buttons may be disposed on exterior portions of the gage pad to form a radially tapered portion to improve steerability, reduce wear of the gage pad and/or improve ability of the rotary drill to form a wellbore having a generally uniform inside diameter, particularly during directional drilling of the wellbore. | 07-01-2010 |
| 20100307836 | DOWNHOLE ASSEMBLY AND CUTTER ASSEMBLY - This invention relates to a downhole assembly and to a cutter assembly, and in particular to a downhole assembly including an apparatus for breaking up large-scale material which is present behind a drill bit, and to a cutter assembly for use in such a downhole assembly. The downhole assembly is suitably for use in a drillstring, the downhole assembly comprising a drill bit, a sensitive component, and at least one rotatable set of cutter blades located between the drill bit and the sensitive component. | 12-09-2010 |
| 20110048809 | HIGH PERFORMANCE ROCK BIT GREASE - The present disclosure relates to greases containing metal sulfonate thickeners. In one example the thickener may be a calcium sulfonate thickener. In other examples grease may contain a combination of a metal sulfonate thickener and another thickener, such as a metal complex soap grease, detergent, or non-soap thickener. The grease may be formulated to meet specific performance criteria relevant to lubrication of a roller cone drill bit in downhole conditions. The disclosure also relates to a roller cone drill bit containing a grease of the disclosure. | 03-03-2011 |
| 20110100721 | Rotary drill bits including bearing blocks - A bearing block is provided that may be used with a drag bit body or frame to limit depth of cut of cutters on a bit. The bearing block is designed so that it may be interchangeably replaced or repaired without necessitating alteration to a standardized bit frame. The interchangeable bearing block may be used to provide a target depth of cut (TDOC) and/or a selected contact or rubbing area to support weight on bit and limit depth of cut (DOC) for improving drilling performance of a bit. The interchangeable bearing block brings manufacturing selectability by providing a customizable product in terms of depth of cut selection and cutter penetration control for different formations, which is suitable for use with a common bit frame. A rotary drill bit assembly, a unitary cone insert bearing block for a drill bit, and a bit frame are also provided. | 05-05-2011 |
| 20110155472 | EARTH-BORING TOOLS HAVING DIFFERING CUTTING ELEMENTS ON A BLADE AND RELATED METHODS - Earth-boring tools include combinations of shearing cutting elements and gouging cutting elements on a blade of the earth-boring tools. In some embodiments, a gouging cutting element may be disposed adjacent to a shearing cutting element on a blade of an earth-boring tool. Methods of forming earth-boring tools include providing such combination of at least one shearing cutting element and at least one gouging cutting element on a blade of an earth-boring tool. | 06-30-2011 |
| 20120111637 | ROTARY DRILL BIT WITH GAGE PADS HAVING IMPROVED STEERABILITY AND REDUCED WEAR - A rotary drill bit having blades with gage pads disposed on exterior portions thereof to improve steerability of the rotary drill bit during formation of a directional wellbore without sacrifice of lateral stability. One or more of the gage pads may include radially tapered exterior portions and/or cut out portions to assist with reducing wear of the associated gage pad. For some applications, a rotary drill bit may be formed having blades with gage pads having a relatively uniform exterior surface. Hard facing material and/or buttons may be disposed on exterior portions of the gage pad to form a radially tapered portion to improve steerability, reduce wear of the gage pad and/or improve ability of the rotary drill to form a wellbore having a generally uniform inside diameter, particularly during directional drilling of the wellbore. | 05-10-2012 |
| 20120205160 | SYSTEM AND METHOD FOR LEG RETENTION ON HYBRID BITS - An earth boring drill bit comprising: one or more legs; a bit body having a blade and a slot for receiving the leg; and one or more wedge between the leg and the slot fixing the leg within the slot. The slot may have two parallel sidewalls with one of the sidewalls forming an acute angle and the other forming an obtuse angle. The wedge may be secured immediately next to the obtuse angled sidewall. The wedge may have two obtuse angled sides. One or more bolts through each wedge may secure both the wedge and the leg to the bit body. In a preferred embodiment, an obtuse angled sidewall of the wedge is preferably secured immediately next to an acute angled side of the leg. | 08-16-2012 |
| 20130199856 | SHAPED CUTTING ELEMENTS FOR EARTH-BORING TOOLS AND EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS - Cutting elements for an earth-boring tool include a substrate base and a cutting tip. The cutting tip may include a first generally conical surface, a second, opposite generally conical surface, a first flank surface extending between the first and second generally conical surfaces, and a second, opposite flank surface. In some embodiments, the cutting tip includes a central axis that is not co-linear with a longitudinal axis of the substrate base. In some embodiments, the cutting tip includes a surface defining a longitudinal end thereof that is relatively more narrow in a central region thereof than in a radially outer region thereof. Earth boring tools include a body and a plurality of such cutting elements attached thereto, at least one cutting element oriented to initially engage a formation with the first or second generally conical surface thereof. Methods of drilling a formation use such cutting elements and earth-boring tools. | 08-08-2013 |
| 20130228382 | INNER GAUGE RING DRILL BIT - A drill bit comprises a plurality of annular blades coupled to a bit body. A plurality of gauge pads is coupled to the bit body and defines an outer cutting diameter. A circumferentially continuous gauge ring is coupled to the bit body and defines an inner cutting diameter. An inner cutting structure is coupled to the bit body and has a cutting diameter substantially equal to the inner cutting diameter. | 09-05-2013 |
| 20130248255 | HARD FACING CONFIGURATION FOR A DRILLING TOOL - Bits configured for drilling rock that are of the type that includes a plurality of teeth supported in pockets that are on a cutting face that is driven to rotate. The pockets are configured to allow the teeth to passively rotate while in the pockets. The present disclosure provides a bit having hardfacing around the pockets and related methods. | 09-26-2013 |
| 20140076639 | Rock Bit and Cutter Teeth Geometries - A rolling cone drill bit for cutting a borehole comprises a rolling cone cutter mounted on a bit body and adapted for rotation about a cone axis. Further, the bit comprises a tooth extending from the cone cutter. The tooth includes a base at the cone cutter and an elongate chisel crest distal the cone cutter. The crest extends along a crest median line between a first crest end and a second crest end and includes an elongate crest apex. The tooth also includes a first flanking surface extending from the base to the crest, and a second flanking surface extending from the base to the crest. The first flanking surface and the second flanking surface taper towards one another to form the chisel crest. Moreover, the tooth includes a first raised rib extending continuously along the first flanking surfaces and across the chisel crest to the second flanking surface. | 03-20-2014 |
| 20140138161 | Hybrid Rolling Cone Drill Bits and Methods for Manufacturing Same - A rolling cone drill bit for drilling a borehole in earthen formations includes a bit body having a bit axis. In addition, the rolling cone drill bit includes a rolling cone cutter mounted on the bit body and having a cone axis of rotation. The cone cutter includes a cone body, a plurality of teeth arranged in a first inner row, and a plurality of inserts. Each insert is disposed within one tooth in the first inner row. | 05-22-2014 |
| 20140144709 | APPARATUS AND METHOD FOR RETAINING INSERTS OF A ROLLING CONE DRILL BIT - An insert for a rolling cone drill bit includes a base portion having a central axis. The base portion is configured to be seated in a mating socket in a cone cutter of the rolling cone drill bit. In addition, the insert includes a cutting portion extending from the base portion. The base portion has a radially outer surface including a non-cylindrical axial retention feature configured to prevent the insert from moving axially out of the mating socket or a non-cylindrical torque holding feature configured to prevent the insert from rotating relative to the cone cutter. | 05-29-2014 |
| 20140353046 | HYBRID BIT WITH ROLLER CONES NEAR THE BIT AXIS - A drill bit includes a bit body having a longitudinal axis extending there through, a plurality of journals extending downward and radially outward from the bit body, each journal having a journal axis extending from a base of the journal through the length of the journal, wherein the journal axis at the base is at a first radial distance from the longitudinal axis, a roller cone rotatably mounted to each of the journals, and at least one blade protruding from the bit body and extending axially and radially along the bit body from a first end to a second end, wherein the first end is at a second radial distance from the longitudinal axis greater than the first radial distance, and wherein the second end is at a gage region of the drill bit. | 12-04-2014 |
| 20150322723 | HARD-ROCK CORE BARREL ROLLER CUTTER ASSEMBLY - The present invention provides a hard-rock core barrel roller cutter assembly, which comprises a roller cutter and a saddle. The roller cutter comprises a base portion for operating, and a connecting portion integrated with the base portion and detachably connected to the saddle. The connecting portion has a butted oblique plane, and a width of the connecting portion is gradually increased from one end adjacent to the base portion to another end far away from the base portion. A fixing block is detachably connected to the saddle, and the fixing block has a pressure slope which matches with the butted oblique plane. A width of the fixing block is gradually decreased from one end adjacent to the base portion to another end far away from the base portion, and the saddle is muff-jointed out of the connecting portion and the fixing block. Comparing with the conventional technology, the roller cutter and the saddle of the present invention can be quickly assembled and detached, to improve the efficiency of the drilling operation. Simultaneously, the connecting strength thereof is high, and can satisfy the requirements of the drilling operation, and can be standardized. | 11-12-2015 |
| 20160108681 | Hybrid Rolling Cone Drill Bits and Methods for Manufacturing Same - A rolling cone drill bit for drilling a borehole in earthen formations includes a bit body having a bit axis. In addition, the rolling cone drill bit includes a rolling cone cutter mounted on the bit body and having a cone axis of rotation. The cone cutter includes a cone body, a plurality of teeth arranged in a first inner row, and a plurality of inserts. Each insert is disposed within one tooth in the first inner row. | 04-21-2016 |
| 20160123084 | DRILL BIT - A drill bit including: a main body portion including three legs extending therefrom, the three legs arranged around a periphery of the main body portion; a conical cutter rotatably mounted on each leg, the conical cutters positioned to allow a clearance between the conical cutter and the main body portion; a protrusion extending from the main body portion into the clearance, wherein the protrusion encourages drill cuttings away from a base region of the main body portion where the legs meet the main body portion. | 05-05-2016 |
| 20190145179 | METHODS OF FORMING STATIONARY ELEMENTS OF ROTATABLE CUTTING ELEMENTS FOR USE ON EARTH-BORING TOOLS AND STATIONARY ELEMENTS FORMED USING SUCH METHODS | 05-16-2019 |
