| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | METHODS OF FORMING AND REPAIRING EARTH-BORING TOOLS INCLUDING REPLACEABLE CUTTING STRUCTURES | US14824448 | 2015-08-12 | US20150345230A1 | 2015-12-03 | Chaitanya K. Vempati; Timothy K. Marvel; Suresh G. Patel |
| Methods of forming an earth-boring tool may involve attaching one or more cutting elements to a replaceable cutting structure and positioning the replaceable cutting structure proximate a region of a body of an earth-boring tool that is susceptible to at least one of localized wear and localized impact damage. The replaceable cutting structure may be to the body. Methods of repairing an earth-boring tool may involve bringing a replaceable cutting structure proximate at least one portion of a body of an earth-boring tool exhibiting at least one of localized wear and localized impact damage. The replaceable cutting structure may be attached to the earth-boring tool at the at least one portion. | ||||||
| 142 | Earth removal member with features for facilitating drill-through | US13333749 | 2011-12-21 | US08960332B2 | 2015-02-24 | Sharp Ugwuocha; Steven Rae |
| An earth removal member with features for facilitating drill-through is provided for drilling with casing or liner applications. In one embodiment, the casing bit includes a tubular body; a nose attached to one end of the tubular body, wherein the nose includes a blade support and comprises a drillable material; a blade attached to the blade support using mating profiles; cutters disposed along the blade; and a nozzle disposed in the nose. | ||||||
| 143 | ROLLING CUTTER WITH CLOSE LOOP RETAINING RING | US13972465 | 2013-08-21 | US20140054094A1 | 2014-02-27 | Yuri Burhan; Jibin Shi; Chen Chen; Youhe Zhang |
| 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. | ||||||
| 144 | Drill bit having rotational cutting elements and method of drilling | US13645128 | 2012-10-04 | US08499859B1 | 2013-08-06 | Craig H. Cooley; Jeffrey B. Lund; Jair J. Gonzalez |
| A rotary drill bit is disclosed. The rotary drill bit may include a bit body, a cutting pocket defined in the bit body, and a cutting element rotatably coupled to the bit body. The cutting element may be positioned at least partially within the cutting pocket. The rotary drill bit may also include a rotation-inducing member adjacent to the cutting element for inducing rotation of the cutting element relative to the cutting pocket. The rotation-inducing member may include a resilient member or a vibrational member. The rotary drill bit may also include protrusions extending from an interior of the cutting pocket adjacent to an outer diameter of the cutting element. A method of drilling a formation is also disclosed. | ||||||
| 145 | ROLLING CUTTER WITH IMPROVED ROLLING EFFICIENCY | US13677105 | 2012-11-14 | US20130146367A1 | 2013-06-13 | YOUHE ZHANG; YUELIN SHEN; YURI BURHAN; KJELL HAUGVALDSTAD |
| A cutting structure may include an outer support element; and an inner rotatable cutting element comprising a cutting surface at its upper end; wherein the inner rotatable cutting element comprises at least one line contact along a circumferential side surface thereof and/or at least one point contact at a bottom face thereof. | ||||||
| 146 | Drill bit having rotational cutting elements and method of drilling | US13330471 | 2011-12-19 | US08286735B1 | 2012-10-16 | Craig H. Cooley; Jeffery B. Lund; Jair J. Gonzalez |
| A rotary drill bit is disclosed. The rotary drill bit may include a bit body, a cutting pocket defined in the bit body, and a cutting element rotatably coupled to the bit body. The cutting element may be positioned at least partially within the cutting pocket. The rotary drill bit may also include a rotation-inducing member adjacent to the cutting element for inducing rotation of the cutting element relative to the cutting pocket. The rotation-inducing member may include a resilient member or a vibrational member. The rotary drill bit may also include protrusions extending from an interior of the cutting pocket adjacent to an outer diameter of the cutting element. A method of drilling a formation is also disclosed. | ||||||
| 147 | Drill bit with replaceable blade members | US12456234 | 2009-06-11 | US08272458B2 | 2012-09-25 | Alan L. Nackerud |
| A drill bit for rotary drilling a well bore of a subterranean formation which has replaceable blades which overlap and interlock with each other and have retention means on more than one axis. The replaceable blades may have cutters with enhanced retention by brazing ring grooves and the body may be flared at its bottom to better retain the blades and cutters. | ||||||
| 148 | KERFING HYBRID DRILL BIT AND OTHER DOWNHOLE CUTTING TOOLS | US13370734 | 2012-02-10 | US20120205163A1 | 2012-08-16 | Michael G. Azar; Bala Durairajan; Madapusi K. Keshavan |
| A drill bit for drilling a borehole in earth formations may include a bit body having a bit axis and a bit face; a plurality of blades extending radially along the bit face; and a plurality of cutting elements disposed on the plurality of blades, the plurality of cutting elements comprising: at least one cutter comprising a substrate and a diamond table having a substantially planar cutting face; and at least two conical cutting elements comprising a substrate and a diamond layer having a conical cutting end, wherein in a rotated view of the plurality of cutting elements into a single plane, the at least one cutter is located a radial position from the bit axis that is intermediate the radial positions of the at least two conical cutting elements. | ||||||
| 149 | CUTTING TOOL INSERTS | US13500167 | 2010-09-15 | US20120193152A1 | 2012-08-02 | Mark Russell; Andy Ollerenshaw |
| An insert (10) for a cutting tool (100) for use down a well bore comprises a body of a hard material (tungsten carbide) suitable for cutting steel. The body is shaped for formation in a mould that comprises a die (70) and first (74) and second (78) punches and arranged so that the first punch can eject the body after formation from an opening of the die closed during formation by said second punch. The insert has first (12) and second (14) ends whose faces are defined, at least in part, by corresponding faces of the first and second punch. Between them is a longitudinal axis (24) of the insert. The area of the first end is less than the area of the second end. The body has flanks (16) that form ridges (18) extending between the first and second ends. The ridges form cutting edges of the insert. They are separated by V-shaped troughs (20) of said flanks. The ridges taper and spiral about the axis. | ||||||
| 150 | Drill bit with adjustable cutters | US12393889 | 2009-02-26 | US08061455B2 | 2011-11-22 | Chad J. Beuershausen |
| A drill bit is provided that in one embodiment may include a blade profile having a cone section and one or more cutters on the cone section configured to retract from an extended position when an applied load on the drill bit reaches or exceeds a selected threshold. The drill bit is less aggressive when the cutters are in the retracted position compared to when the cutters are in the extended position. | ||||||
| 151 | Compliantly coupled cutting system | US12191172 | 2008-08-13 | US07845430B2 | 2010-12-07 | Ashley Bernard Johnson; Geoffrey C. Downton; John M. Cook |
| A drill bit system for a drilling assembly is disclosed. The drill bit system may include a chassis, a head, and a first plurality of gauge pads. The head may include a first plurality of cutters coupled with an end of the head, and the head may be movably coupled with chassis. The first plurality of gauge pads may include a second plurality of cutters, and the first plurality of gauge pads may be fixedly coupled with the chassis. | ||||||
| 152 | Drill shoe | US10788976 | 2004-02-27 | US20040226751A1 | 2004-11-18 | David McKay; David M. Haugen |
| A method and apparatus for a drilling with casing includes therewith a drill shoe configured for later drilling through thereof in situ, with cutters retainable thereon in response to the forces encountered during borehole drilling, yet moveable from the envelope through which the later drill shoe will pass when cutting through the in situ drill shoe. The drill shoe includes one or more profiles thereon, into which blades carrying the formation drilling cutters are disposed. The profiles include at least one projection thereon, which is received within a mating slot in the blades. The blades also may be configured to have opposed sections which are configured with respect to one another to have an included angle of less than ninety degrees. | ||||||
| 153 | Drill bit | US63709 | 1979-08-06 | US4252202A | 1981-02-24 | James A. Purser, Sr. |
| A drill bit consisting of a tubular, main body member having a set of threads at one end thereof connectable to a drill stem and an annular mounting edge on an opposite end thereof, the mounting edge having a plurality of circumferentially spaced, longitudinally disposed recesses, the main body member having an enlarged annular portion adjacent the annular mounting edge, the enlarged portion of the main body member having a plurality of circumferentially spaced recesses disposed at an angle relative to the axis of the main body member, each of the recesses in the enlarged portion of the main body member being disposed between a set of recesses in the annular mounting edge and providing a pair of converging surfaces, a plurality of blades, each of the blades being disposed in a recess in the mounting edge, substantially radially relative to the axis of the main body member, having a recess receiving a wall portion of the main body member and a surface aligned with a surface of an adjacent set of the sets of converging surfaces, and a locking ring mountable on the main body member, having a plurality of fingers received in the recesses in the enlarged portion of the main body member, engaging a set of converging surfaces thereof and an aligned surface of the adjacent blade member in wedging relation for securing the blade members on the main body member. | ||||||
| 154 | Drill bit with staggered teeth | US3545554D | 1968-12-03 | US3545554A | 1970-12-08 | BARDWELL ALLEN E |
| 155 | Drill bits | US49419765 | 1965-10-08 | US3336992A | 1967-08-22 | WHITE VAN R |
| 156 | Drill bit with deflector and interlock | US12755261 | 1961-07-28 | US3132708A | 1964-05-12 | STOCKARD JR JESSE L |
| 157 | Detachable blade bit | US76303958 | 1958-09-24 | US3003570A | 1961-10-10 | ROLAND JOE A |
| 158 | Rotary drilling bit | US59742656 | 1956-07-12 | US2861779A | 1958-11-25 | WHITE THOMAS A |
| 159 | Detachable blade bit | US79423947 | 1947-12-29 | US2666622A | 1954-01-19 | HAWTHORNE HERBERT J |
| 160 | Rotary drilling bit | US11525549 | 1949-09-12 | US2656153A | 1953-10-20 | WHITE THOMAS A |
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