| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 175393000 | With fluid conduit lining or element (e.g., slush tube) | 36 |
| 20080202818 | Rotary Roller Reamer - A bore hole rotary reamer ( | 08-28-2008 |
| 20090065262 | DRILL BIT - A drill bit | 03-12-2009 |
| 20090065263 | DRAG BIT WITH UTILITY BLADES - A drill bit comprises a bit body and a plurality of cutting blades extending radially from the bit body, the plurality of cutting blades further comprising cutting elements disposed thereon. The drill bit also comprises a plurality of utility blades extending radially from the bit body, the plurality of utility blades being free of cutting elements. | 03-12-2009 |
| 20090084607 | DRILL BITS AND TOOLS FOR SUBTERRANEAN DRILLING - A drill bit includes at least one extension pad extending rotationally forward or backward of an associated blade in a gage region of the bit body. The extension pad includes a circumferential bearing surface that extends the circumferential bearing surface of the associated blade and reduces the chordal drop between any blade having an extension pad associated therewith and a circumferentially adjacent blade toward which the extension pad protrudes. A drill bit that reduces a chordal drop segment extending across a junk slot is also disclosed. | 04-02-2009 |
| 20090283333 | MATRIX BIT BODIES WITH MULTIPLE MATRIX MATERIALS - A drill bit that includes a bit body having a plurality of blades extending radially therefrom, the bit body comprising a first matrix region and a second matrix region, wherein the first matrix region is formed from a moldable matrix material; and at least one cutting element for engaging a formation disposed on at least one of the plurality of blades is disclosed. | 11-19-2009 |
| 20100084195 | DISTANCE HOLDER WITH JET DEFLECTOR - A distance holder for connection to, and rotation with, a drill string in an earth formation drilling device arranged to supply a jet of abrasive fluid for the purpose of providing a borehole by removing earth formation material through abrasion, comprises a chamber that is essentially rotational symmetric and which faces the earth formation material, and a jet nozzle arranged for discharging a jet of the abrasive fluid in the chamber. The chamber comprises a deflector positioned in the path of the fluid jet discharged from the jet nozzle. | 04-08-2010 |
| 20100101867 | SELF-STABILIZED AND ANTI-WHIRL DRILL BITS AND BOTTOM-HOLE ASSEMBLIES AND SYSTEMS FOR USING THE SAME - A wellsite system includes a drill string suspended within a borehole, and a bottom hole assembly with a drill bit at its lower end, where the drill bit is a self stabilized and anti-whirl drill bit. The drill bit includes an interior cavity in fluid communication with the drill string, and a plurality of gauge pads located on the exterior of the drill bit. One or more of the gauge pads include an orifice in communication with the interior cavity, where the orifice is arranged at an angle relative to cutters fixed to the drill bit. The drill bit is configured such that a fluid continuously flows from each of the orifices. | 04-29-2010 |
| 20100116557 | MATRIX BIT BODIES WITH MULTIPLE MATRIX MATERIALS - A drill bit may include a bit body having a plurality of blades extending radially therefrom, the bit body comprising a first matrix region and a second matrix region, wherein the first matrix region is formed from a moldable matrix material having carbide particles with a unimodal particle size distribution; and at least one cutting element for engaging a formation disposed on at least one of the plurality of blades. | 05-13-2010 |
| 20100147596 | Drillable Bit Nozzle Retainer with Interchangeable Nozzle Capability - A drillable bit nozzle assembly can be used on a casing drilling bit and features a support housing preferably of the same material as the bit crown. The housing is preferably attached by welding and contains a groove for a seal and internal threads for an insert retainer. A landing shoulder for the hardened inserts allows different sizes to be inserted in the housing and retained by a hardened or carbide ring holder that engages the internal threads. The insert and the retainer are sufficiently thin walled to break during mill out while the housing is softer and easily milled out. | 06-17-2010 |
| 20100170720 | DRILL BIT - A drill bit usable with a fluid, the drill bit comprising a body section, the body section defining a body proximal end and a substantially longitudinally opposed body distal end, the body section defining a body passageway extending substantially longitudinally therethrough for receiving the fluid and conveying the fluid through the body section; a substantially annular crown section extending substantially longitudinally from the body section, the crown section defining a crown distal end and a substantially longitudinally opposed crown proximal end, the crown section extending from the body section with the crown proximal end located substantially adjacent to the body distal end, the crown section defining a crown passageway extending substantially longitudinally therethrough, the crown passageway being in fluid communication with the body passageway for receiving the fluid from the body passageway; and a flow directing component cooperating with the crown section to define a fluid flow channel, the fluid flow channel extending through the crown section substantially radially outwardly from the crown passageway, the fluid flow channel being self-modifiable upon the crown section reaching a predetermined wear threshold so as to modify a flow of the fluid through the fluid flow channel when the crown section reaches the predetermined wear threshold. | 07-08-2010 |
| 20100193253 | EARTH-BORING TOOLS AND BODIES OF SUCH TOOLS INCLUDING NOZZLE RECESSES, AND METHODS OF FORMING SAME - Earth-boring tools such as, for example, earth-boring rotary drill bits include erosion-resistant structures disposed proximate areas of intersection between faces of the tools and fluid nozzle recesses or fluid passageways extending through the tools to the face. In some embodiments, such an erosion-resistant structure may comprise a mass of hardfacing material. In additional embodiments, such an erosion-resistant structure comprises an erosion-resistant insert. Methods of forming such earth-boring tools include providing erosion-resistant structures proximate intersections between the faces of the tools and fluid nozzle recesses or fluid passageways extending through the tools. Methods of repairing earth-boring tools include providing an annular-shaped, erosion-resistant structure over an eroded surface of a body of a previously used earth-boring tool proximate an intersection between an outer face of the body and an inner surface of the body. | 08-05-2010 |
| 20100193254 | Matrix Drill Bit with Dual Surface Compositions and Methods of Manufacture - Matrix drill bits and other downhole tools may be formed with one or more layers of hard materials disposed on exterior portions thereof. Exterior portions of used rotary drill bits or other downhole tools may be measured using three dimensional (3D) scanning techniques or other techniques to determine specific locations of undesired abrasion, erosion and/or wear. During the design of a new rotary drill bit or other downhole tool, computational flow analysis techniques may be used to determine potential locations for excessive erosions, abrasion, wear, impact and/or fatigue on exterior portions of the rotary drill bit or other downhole tools. One or more layers of hard material may be disposed at such locations on exterior portions of matrix bit bodies and other matrix bodies based on analyzing exterior portions of used downhole tools and/or computational flow analysis. | 08-05-2010 |
| 20100230175 | Earth Boring Bit - The earth boring bit | 09-16-2010 |
| 20100288563 | METHODS OF USE OF PARTICULATE MATERIALS IN CONJUNCTION WITH BRAZE ALLOYS AND RESULTING STRUCTURES - A component brazed to another, constraining component such as sleeve assembly brazed in a bore of a bit body. The braze joint includes particulate material in the gap between the components. | 11-18-2010 |
| 20110000716 | DRILL BIT WITH A FLOW INTERRUPTER - A drill bit is disclosed, comprising: a drill bit head having a cutting face with one or more fixed cutting elements; a flow passage extending through the drill bit head to the cutting face; a flow interrupter within the drill bit head and positioned to interrupt flow of fluid through the flow passage; and a power section connected to drive the flow interrupter and cause, in operation, variable flow of fluid through the flow passage. A method of drilling is also disclosed comprising: flowing fluid through a flow passage extending through a drill bit head to a cutting face of the drill bit head, the cutting face having one or more fixed cutting elements; and driving a flow interrupter within the drill bit head with a power section to interrupt the flow of fluid through the flow passage and cause variable flow of fluid through the flow passage. | 01-06-2011 |
| 20110031026 | EARTH-BORING TOOLS AND COMPONENTS THEREOF INCLUDING EROSION RESISTANT EXTENSIONS, AND METHODS OF FORMING SUCH TOOLS AND COMPONENTS - Earth-boring drill bits include a bit body, an erosion-resistant extension, and a shank. The erosion-resistant extension includes a generally tubular body, and an erosion-resistant material lining the generally tubular body within a fluid passageway. The erosion-resistant material lining the generally tubular body within the fluid passageway exhibits an erosion resistance greater than an erosion resistance exhibited by a material of the generally tubular body. Methods of forming an erosion-resistant extension include lining at least a portion of a wall of a generally tubular body within a fluid passageway extending through the generally tubular body with an erosion-resistant material. | 02-10-2011 |
| 20110061941 | EARTH REMOVAL MEMBER WITH FEATURES FOR FACILITATING DRILL-THROUGH - Embodiments of the present invention generally relate to an earth removal member with features for facilitating drill-through. In one embodiment, an earth removal member for drilling a wellbore with casing or liner includes a tubular body and a head. The head is fastened to or formed with an end of the body, has a face and a side, is made from a high strength material, and has a port formed through the face. The earth removal member further includes a blade. The blade is formed on the head, extends from the side and along the face, and is made from the high strength material. The earth removal member further includes cutters disposed along the blade; and a nozzle adapter. The nozzle adapter has a port formed therethrough, is longitudinally and rotationally coupled to the head, and is made from a drillable material. The earth removal member further includes a nozzle disposed in the adapter port and fastened to the nozzle adapter. | 03-17-2011 |
| 20110073377 | EARTH BORING TOOLS AND COMPONENTS THEREOF INCLUDING BLOCKAGE RESISTANT INTERNAL FLUID PASSAGEWAYS, AND METHODS OF FORMING SUCH TOOLS AND COMPONENTS - Earth-boring drill bits include a bit body including a blockage-resistant internal fluid passageway. The blockage-resistant internal fluid passageway includes at least one internal fluid passageway formed in the bit body and a cuttings filtering feature formed in the at least one internal fluid passageway configured to prevent at least some cuttings from flowing through the at least one internal fluid passageway. In one embodiment, the cuttings filtering feature includes at least one lateral member extending transversely across the at least one internal fluid passageway. In another embodiment, the cuttings filtering feature includes forming a central portion of the at least one internal fluid passageway with a width along a lateral axis thereof less than an average width of a fluid path extending through a nozzle disposed at least partially within the at least one internal fluid passageway. Methods of forming the blockage-resistant internal fluid passageway are also disclosed. | 03-31-2011 |
| 20110127087 | PDC DRILL BIT WITH FLUTE DESIGN FOR BETTER BIT CLEANING - A drill bit is disclosed, comprising: a drill bit head having a cutting face with one or more fixed cutting elements; a flow passage extending from the center towards the gage of the bit which has been designed to increase the velocity across the cutting elements. | 06-02-2011 |
| 20120103694 | EARTH REMOVAL MEMBER WITH FEATURES FOR FACILITATING DRILL-THROUGH - An earth removal member for drilling a wellbore with casing or liner includes a tubular body and a head. The head is fastened to or formed with an end of the body, has a face and a side, is made from a high strength material, and has a port formed through the face. The earth removal member further includes a blade. The blade is formed on the head, extends from the side and along the face, and is made from the high strength material. The earth removal member further includes cutters disposed along the blade; and a nozzle adapter. The nozzle adapter has a port formed therethrough, is longitudinally and rotationally coupled to the head, and is made from a drillable material. The earth removal member further includes a nozzle disposed in the adapter port and fastened to the nozzle adapter. | 05-03-2012 |
| 20120285749 | DRILL BIT AND PRODUCTION METHOD - A drill bit | 11-15-2012 |
| 20120298425 | Heavy Duty Matrix Bit - An apparatus and method for manufacturing a downhole tool that reduces failures occurring along a bondline between a cemented matrix coupled around a blank. The cemented matrix material is formed from a powder and a binder material. The blank includes an internal blank component and a coating coupled around at least a portion of the surface of the internal blank component. The internal blank component includes a top portion and a bottom portion. The internal blank component is substantially cylindrically shaped and defines a channel extending through the top portion and the bottom portion. The coating is a metal in some exemplary embodiments. The coating reduces the migration of the binder material into the blank thereby allowing the control of intermetallic compounds thickness within the bondline. | 11-29-2012 |
| 20130075166 | ROTATIONAL DRILL BITS AND DRILLING APPARATUSES INCLUDING THE SAME - A roof-bolt drill bit. The roof-bolt drill bit may include a bit body rotatable about a central axis and a cutting element coupled to the bit body. The bit body may comprise a forward end, a rearward end axially spaced away from the forward end, and an internal passage defined within the bit body, with the internal passage extending from a rearward opening defined in the rearward end of the bit body through at least a portion of the bit body. A fluid port is configured to direct fluid from the internal passage through a port opening in a direction that forms an angle with respect to a forward direction of the central axis. | 03-28-2013 |
| 20130133956 | REVERSE CIRCULATION BIT ASSEMBLY - A drill bit assembly for boring including a drill bit and a bit sub. A front bit end has a plurality cutting elements at a forward face of the front bit end and a first fluid return passage extending through the drill bit to a rear bit end. The bit sub couples to the rear bit end. The bit sub includes a bore disposed at a front sub end sized and shaped to receive the rear bit end of the drill bit. A plurality of legs extends from a mid-sub region toward the front sub end between pairs of cutting elements. The plurality of legs has a fluid delivery passage disposed therein with the fluid delivery passage extending from the plurality of legs to a rear sub bit end. The bit sub has a second fluid return passage connecting the first fluid return passage to the rear sub bit end. | 05-30-2013 |
| 20130248257 | Drilling Fluid Composition - The invention pertains to a drilling fluid composition comprising:—at least one (per)fluoropolyether oil comprising recurring units of formula —CF(CF3)CF2O— said oil having a kinematic viscosity of 30 to 80 cSt measured according to ASTM D455 standard at 20° C. [oil (E)] and possessing a polydispersity index (PDI) of at least 1.15; and—at least one (per)fluoropolyether phosphate comprising at least one perfluoropolyoxyalkylenic chain and at least one phosphoric acid group, in its acid, amide, salt or ester form [phosphate (P)], to a method for its manufacture and to its use in a drilling rig equipment. | 09-26-2013 |
| 20130327575 | EARTH REMOVAL MEMBER WITH FEATURES FOR FACILITATING DRILL-THROUGH - An earth removal member for drilling a wellbore with casing or liner includes a tubular body and a head. The head is fastened to or formed with an end of the body, has a face and a side, is made from a high strength material, and has a port formed through the face. The earth removal member further includes a blade. The blade is formed on the head, extends from the side and along the face, and is made from the high strength material. The earth removal member further includes cutters disposed along the blade; and a nozzle adapter. The nozzle adapter has a port formed therethrough, is longitudinally and rotationally coupled to the head, and is made from a drillable material. The earth removal member further includes a nozzle disposed in the adapter port and fastened to the nozzle adapter. | 12-12-2013 |
| 20140020957 | PDC Drill Bit With Flute Design For Better Bit Cleaning - A drill bit is disclosed, comprising: a drill bit head having a cutting face with one or more fixed cutting elements; a flow passage extending from the center towards the gage of the bit which has been designed to increase the velocity across the cutting elements. | 01-23-2014 |
| 20140090899 | FLOW THROUGH GAUGE FOR DRILL BIT - An apparatus that includes one or more flow channels and method for fabricating such flow channels. The apparatus includes a body, one or more blades from one end of the body, and a corresponding gauge section disposed adjacently and in alignment with a respective blade. Each gauge section includes a leading section, a trailing section, a face section extending from one end of the leading section to an end of the trailing section, and at least one flow channel extending from the leading edge section to at least one of the trailing edge section or the face section. | 04-03-2014 |
| 20140090900 | BLADE FLOW PDC BITS - An apparatus that includes one or more flow channels and method for fabricating such flow channels. The apparatus includes a body and one or more blades extending from one end of the body. Each blade includes a leading section, a trailing section, a face section extending from one end of the leading section to an end of the trailing section, and at least one flow channel extending from the leading edge section to the trailing edge section. | 04-03-2014 |
| 20140090901 | MACHINED HIGH ANGLE NOZZLE SOCKETS FOR STEEL BODY BITS - An apparatus that includes one or more machined high-angle sockets and method for fabricating such sockets. The apparatus includes a body, one or more blades extending outwardly from the body, and one or more high-angle nozzles machined into a portion of the blade. The body includes a bit face at one end and a plenum formed therein communicably coupled to an opening formed at an opposing end. Each blade includes a leading section, a trailing section, a face section extending from one end of the leading section to an end of the trailing section, and an inner section extending from an opposing end of the leading section to an opposing end of the trailing section. Each nozzle includes a nozzle socket cavity and a second hole intersecting with the nozzle socket cavity and extending to the plenum, which collectively form a passage extending from the plenum to the bit face. | 04-03-2014 |
| 20140131115 | Method For Reducing Intermetallic Compounds In Matrix Bit Bondline - An apparatus and method for manufacturing a downhole tool that reduces failures occurring along a bondline between a cemented matrix coupled around a blank. The cemented matrix material is formed from a tungsten carbide powder, a shoulder powder, and a binder material, wherein at least one of the tungsten carbide powder or the shoulder powder is absent of any free tungsten. The blank, which optionally may be coated, is substantially cylindrically shaped and defines a channel extending from a top portion and through a bottom portion of the blank. The absence of free tungsten from at least one of the tungsten carbide powder or the shoulder powder reduces the reaction with iron from the blank, thereby allowing the control and reduction of intermetallic compounds thickness within the bondline. | 05-15-2014 |
| 20160053550 | DRILL HEAD - A drill head including: an elongate housing, a first end of the housing being coupled to an end of a drill pipe in use; a base at a second end of the housing, one or more drill cutters being attached to the base; a supply passageway at least partially within the housing, the supply passageway being supplied with a flow of gas in use; a return passageway at least partially within the housing, a first end of the return passageway being connected to an end of an inner tube extending inside the drill pipe in use, and a second end of the return passageway forming an opening in the base proximate to the one or more drill cutters; and one or more ports for directing at least some of the flow of gas from the supply passageway into the return passageway in a flow direction extending away from the base and towards the inner tube, to thereby cause loose material to be drawn into the return passageway through the opening and transported away from the drill head via the inner tube in use. | 02-25-2016 |
| 20160076309 | CURVED NOZZLE FOR DRILL BITS - A curved nozzle for use in a drill bit is disclosed. The curved nozzle includes a flow path that directs drilling fluid towards the face of cutters. The curved nozzle may include a base, neck, and a tip. Flow entering the nozzle, travels along a flow path through the nozzle and out the tip. The flow path may be reduced as it passes through the nozzle. The flow is curved as it flows through the neck and out the tip. The nozzle includes cooperating interior surfaces that guide the flow. The upper interior surface may include two curved zones. The first zone will be a substantially constant radius of curvature. The second zone, extending from the first zone, may be straight. | 03-17-2016 |
| 20160145946 | DRILL BITS HAVING FLUSHING AND SYSTEMS FOR USING SAME - A drill bit for forming a hole in a formation. The drill bit has a shank and a full face crown that cooperate to define an interior space that receives water or other drilling fluid. The full face crown defines a plurality of bores that extend from a cutting face of the full face crown to the interior space. The full face crown completely circumferentially encloses the interior space of the drill bit. A wedge shaped slot is defined therein the full face crown that extends longitudinally therein a portion of the cutting face and the circumferential outer surface of the full face crown. The slot further defines an apex that is positioned beyond the center of the cutting face of the drill bit such that the longitudinal axis of the drill bit extends through the bottom surface of the slot and into an interior void area of the slot. Further, a conduit is defined in the drill bit that is in communication with the interior space and with a portion of the defined slot. | 05-26-2016 |
| 20160201400 | FLOW THROUGH GAUGE FOR DRILL BIT | 07-14-2016 |
| 20160375486 | SURFACE COATING FOR METAL MATRIX COMPOSITES - A method of fabricating a metal matrix composite (MMC) tool includes coating at least a portion of an interior of a mold assembly with one or more layers of a material coating, where the mold assembly defines at least a portion of an infiltration chamber. Reinforcing materials are deposited into the infiltration chamber, and infiltrated with a binder material. One or more layers of the material coating may then be reacted with the binder material to form an outer shell on selected outer surfaces of the MMC tool. | 12-29-2016 |
