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序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
181	EARTH-BORING DRILL BITS WITH NANOTUBE CARPETS	US14410157	2013-12-18	US20160265283A1	2016-09-15	Garrett T. Olsen; Jeffrey G. Thomas
An earth-boring drill bit includes a bit body having a powder component and a binder. The powder component includes a plurality of nanotubes disposed on a surface of at least one particle of the powder component.
182	FIBER-REINFORCED TOOLS FOR DOWNHOLE USE	US14409496	2013-12-13	US20160265282A1	2016-09-15	Garrett T. Olsen
A wellbore tool may be formed, at least in part, by a fiber-reinforced hard composite portion that comprises a binder, matrix particles, and reinforcing fibers, wherein the reinforcing fibers have an aspect ratio ranging from equal to a critical aspect ratio (Ac) to 15 times greater than the Ac, wherein Ac=σf/(2Tc), σf is an ultimate tensile strength of the reinforcing fibers, and Tc is an interfacial shear bond strength between the reinforcing fiber and the binder or a yield stress of the binder, whichever is lower.
183	WELLBORE MILL HAVING SHEAR CUTTERS AND GOUGING CUTTERS	US14813206	2015-07-30	US20160265281A1	2016-09-15	Timothy P. Beaton; Ryan J. C. Marley; Alex Wong; John James Herman; Carl M. Hoffmaster; Kenneth M. Nevlud
A mill includes a mill body defining a plurality of blades extending in a direction from a center or rotation of the mill body to a gauge surface. The blades define a cutting profile having a minimum diameter at a longitudinal endmost position. The minimum diameter is smaller than a diameter of a drop ball. The cutting profile has an intermediate diameter at most equal to the diameter of the drop ball at a longitudinal distance from the endmost position greater than the diameter of the drop ball. Shear cutters are mounted on at least one of the plurality of blades, mounted such that at least one shear cutter is mounted closer to a center of rotation of the mill body with respect to other cutters mounted to the blades. At least one insert is mounted to the at least one of the plurality of blades rotationally ahead of the shear cutters.
184	Subsurface drilling tool	US14290597	2014-05-29	US09428965B2	2016-08-30	Kevin Dewayne Jones
An improved subsurface drilling tool comprises a shank having a cutting end opposite a pin end configured to attach to a drill string. A plurality of ear portions is associated with the proximate end of the shank and configured to form a socket. A ball-shaped cutting tool is configured to fit inside the socket and is rotatably attach to the ear portions via an axle. A locking pin may be installed within one or more of the ear portions and perpendicular to the axle. A plurality of blade inserts is connected to the ball-shaped cutting tool. The blade inserts may be removable and/or configurable to be oriented in varied directions. A series of milling courses may extend longitudinally along an outside length of the shank. A fluid course may extend longitudinally within the shank to deliver drilling fluid to the cutting end.
185	Earth-boring tools and components thereof including material having hard phase in a metallic binder, and metallic binder compositions for use in forming such tools and components	US13847282	2013-03-19	US09428822B2	2016-08-30	Prakash K. Mirchandani; Jimmy W. Eason; James J. Oakes; James C. Westhoff; Gabriel B. Collins
Binder compositions for use in forming a bit body of an earth-boring bit include at least one of cobalt, nickel, and iron, and at least one melting point-reducing constituent selected from at least one of a transition metal carbide up to 60 weight percent, a transition metal boride up to 60 weight percent, and a transition metal silicide up to 60 weight percent, wherein the weight percentages are based on the total weight of the binder. Earth-boring bit bodies include a cemented tungsten carbide material comprising tungsten carbide and a metallic binder, wherein the tungsten carbide comprises greater than 75 volume percent of the cemented tungsten carbide material.
186	EARTH-BORING TOOLS AND COMPONENTS THEREOF INCLUDING MATERIAL HAVING HARD PHASE IN A METALLIC BINDER, AND METALLIC BINDER COMPOSITIONS FOR USE IN FORMING SUCH TOOLS AND COMPONENTS	US13847282	2013-03-19	US20160208557A9	2016-07-21	Prakash K. Mirchandani; Jimmy W. Eason; James J. Oakes; James C. Westhoff; Gabriel B. Collins
Binder compositions for use in forming a bit body of an earth-boring bit include at least one of cobalt, nickel, and iron, and at least one melting point-reducing constituent selected from at least one of a transition metal carbide up to 60 weight percent, a transition metal boride up to 60 weight percent, and a transition metal silicide up to 60 weight percent, wherein the weight percentages are based on the total weight of the binder. Earth-boring bit bodies include a cemented tungsten carbide material comprising tungsten carbide and a metallic binder, wherein the tungsten carbide comprises greater than 75 volume percent of the cemented tungsten carbide material.
187	Hybrid rotary cone drill bit	US13975094	2013-08-23	US09376866B2	2016-06-28	Kyle Nobile; Matt Stroever; David Michel Harrington; Karl W. Rose
A hybrid rotary cone drill bit includes a plurality of legs. A bearing shaft extends from each leg, and a rotary cone is rotationally coupled to each bearing shaft. At least one rotary cone includes a nose row of cutting structures, an inner row of cutting structures, and a gage row of cutting structures. The nose row and the inner row of cutting structures are formed of milled teeth. The gage row of cutting structures is formed of cutter inserts.
188	Method of forming a bore	US13285078	2011-10-31	US09366086B2	2016-06-14	James A. Hewson; Philip M. Burge
A method of forming a supported subterranean well bore in which, in one disclosed embodiment, a first drill bit is mounted on a first string of casing tubulars via a steerable tool, and the drill bit is used to form a first bore. Upon reaching the required depth the casing string is cemented in place to support the formed bore and a second drill bit is mounted on a second casing string and is inserted into the first casing string. The second drill bit is used to drill through the wall of the first casing string and proceed to form a second, deeper bore. Once the second drill bit has reached the required depth, the second casing string is cemented in place to support the second bore.
189	Inner gauge ring drill bit	US13774591	2013-02-22	US09359821B2	2016-06-07	Richard J. Sauvageau
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.
190	LOW COLLISION DAMAGE BIT	US14944265	2015-11-18	US20160145945A1	2016-05-26	Gary R. Portwood; Cary A. Roth; Luca Tedeschi
A low collision damage bit may include one or more roller cones including a first material and a second material. The bit may have a bit axis and a bit body, and the second material of the one or more roller cones may be positioned farther from the bit axis than the bit body. The second material may have a hardness or yield strength less than the first material.
191	DRILL BIT	US14894182	2014-05-27	US20160123084A1	2016-05-05	David Hanns
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.
192	Rock bit and cutter teeth geometries	US14074028	2013-11-07	US09328562B2	2016-05-03	Thang Vo; Tom Scott Roberts; Adrian Reyes; Robert Morton
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.
193	Drill bits and earth-boring tools including shaped cutting elements	US13762664	2013-02-08	US09316058B2	2016-04-19	Juan Miguel Bilen; Danny E. Scott; Suresh G. Patel; Oliver Matthews; Derek L. Nelms; Nicholas J. Lyons
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. The cutting tip may include a central axis that is not co-linear with a longitudinal axis of the substrate base. The cutting tip may include 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.
194	PUSH REAMER	US14442784	2013-11-15	US20150330148A1	2015-11-19	Jeffrey James UTTER; Edwin G. SPOELSTRA
In some underground boring applications the exit location of the underground bore may be located such that drill pipe and material pipe sections cannot be conveniently deployed therefrom (e.g., a basement of a building, the inside of another pipe, or a small manhole space). In such applications, push reaming functionality is often the preferred method of reaming because the pipe section can be deployed and installed from a pit where the bore is started during a push reaming operation. The present disclosure provides a new push reaming drill head as well as a new method of push reaming.
195	SUBSURFACE DRILLING TOOL	US14290597	2014-05-29	US20150075868A1	2015-03-19	Kevin Dewayne Jones
The present invention relates in general to subsurface drilling tools, and more specifically, to a drill bit comprising a ball shaped cutting tool. The drill bit is configured so that a plurality of cones, forming the ball shaped cutting tool, rotate in opposite directions around an axle while the drill bit is drilling or cutting through the ground, rock, or other material. The drilling or cutting is accomplished by a plurality of blade inserts that fit inside and protrude therefrom a plurality of holes covering the exterior of the ball shaped cutting tool. The purpose of the present invention is to provide a new and improved subsurface drilling tool that will efficiently drill hard rock formations.
196	EARTH-BORING TOOLS AND METHODS OF FORMING EARTH-BORING TOOLS	US14522297	2014-10-23	US20150041222A1	2015-02-12	Jimmy W. Eason; Michael R. Wells
Methods of fabricating earth-boring tools include forming an outer portion of an earth-boring tool from a powder mixture comprising hard particles and matrix particles comprising a metal matrix material, disposing a molten material at least partially within the outer portion of the earth-boring tool, and forming the molten material into another portion of the earth-boring tool. Methods of fabricating a bit body of an earth-boring rotary drill bit include forming an outer portion comprising a plurality of hard particles and a plurality of matrix particles comprising a metal matrix material and casting a molten material at least partially within the outer portion of the bit body to form another portion of the bit body. Earth-boring tools include a body for engaging a subterranean borehole having an outer portion and an inner portion comprising at least one material solidified within a cavity formed within the outer portion.
197	Cutting element apparatuses, drill bits including same, methods of cutting, and methods of rotating a cutting element	US14033262	2013-09-20	US08931582B2	2015-01-13	Craig H. Cooley; Timothy N. Sexton; S. Barrett Peterson; Jeffrey Lund; Christopher F. Johnson
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.
198	ROTATING CUTTING ELEMENTS FOR PDC BITS	US14363266	2012-12-04	US20140326515A1	2014-11-06	Jibin Shi; Youhe Zhang
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.
199	WEAR RESISTANT PLATES ON A LEADING TRANSITIONAL SURFACE OF THE LEG FOR A ROTARY CONE DRILL BIT	US14193970	2014-02-28	US20140299384A1	2014-10-09	David Michel Harrington; Amnach Kongamnach; Cesar A. Fierro
In an embodiment, a rotary cone drill bit comprises: a body, a leg depending from the body, a bearing shaft extending from the leg and a cone mounted to the bearing shaft. The leg includes a leading transitional surface. A bottom surface of a hard material plate is attached to a substantially conforming surface of the leg in a position where the hard material plate is disposed on a floor surface formed in or by the leading transitional surface of the leg.
200	EARTH-BORING TOOLS AND COMPONENTS THEREOF INCLUDING MATERIAL HAVING HARD PHASE IN A METALLIC BINDER, AND METALLIC BINDER COMPOSITIONS FOR USE IN FORMING SUCH TOOLS AND COMPONENTS	US13847282	2013-03-19	US20140284114A1	2014-09-25	Prakash K. Mirchandani; Jimmy W. Eason; James J. Oakes; James C. Westhoff; Gabriel B. Collins
Binder compositions for use in forming a bit body of an earth-boring bit include at least one of cobalt, nickel, and iron, and at least one melting point-reducing constituent selected from at least one of a transition metal carbide up to 60 weight percent, a transition metal boride up to 60 weight percent, and a transition metal silicide up to 60 weight percent, wherein the weight percentages are based on the total weight of the binder. Earth-boring bit bodies include a cemented tungsten carbide material comprising tungsten carbide and a metallic binder, wherein the tungsten carbide comprises greater than 75 volume percent of the cemented tungsten carbide material.

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