| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Rotary grinding type excavation drill head | JP15914176 | 1976-12-28 | JPS5382601A | 1978-07-21 | KABASHIMA RIYUUICHI |
| 42 | 钻头 | CN200820125926.3 | 2008-07-18 | CN201221316Y | 2009-04-15 | 杰夫·唐顿 |
| 本实用新型涉及一种钻头，其具有围绕轴线旋转的主体和用于移走岩石或类似物的切削面。钻头被旋转，因为其连接到钻柱并在切削面附近包括保径区域。保径区域(14)包括至少三个盘(30)，其半径从旋转轴线A－A垂直延伸。这些盘(30)沿着旋转轴线间隔开并布置在主体上，并且使圆周表面布置来使得盘被假想的立体圆锥部分的表面围绕，垂直于旋转轴线A－A的直径以从切削面(10)的距离的函数按照非比例的方式变化。 | ||||||
| 43 | ROTARY CONE DRILL BIT HAVING A BIT BODY WITH INTEGRAL STABILIZERS | PCT/US9926491 | 1999-11-10 | WO0029709A9 | 2001-12-06 | DAHLEM JAMES S; KNECHT KARL DON |
| A rotary cone drill bit for forming a borehole having a bit body with a plurality of stabilizer pads formed as integral components thereof. The bit body includes an upper portion adapted for connection to a drill string. A number of support arms preferably extend from a lower portion of the bit body. A number of cutter cone assemblies equal to the number of support arms are rotatably mounted on respective support arms and project generally downwardly and inwardly from each support arm. The stabilizer pads project radially outward from the bit body and are disposed intermediate adjacent support arms. Both the stabilizer pads and the support arms preferably have surfaces that form a fluid flow channel therebetween to direct drilling fluids and cuttings to flow upward in the borehole. Layer of hardfacing may be disposed on selected portions of each stabilizer pad. One or more inserts may be installed in selected portions of each stabilizer pad. | ||||||
| 44 | MILLS FOR WELLBORE OPERATIONS | PCT/GB0000656 | 2000-02-24 | WO0050729A3 | 2000-12-07 | BRUNNERT DAVID JOSEPEH; HART SHANE PAUL; BAILEY THOMAS; HAUGEN DAVID M; CARTER THRUMAN B; MCLUNG GUY LAMONTE; HENSON MICHAEL |
| A wellbore mill (10) has been invented that, in certain aspects, has a body (12) having a top and a bottom and, optionally, a fluid flow channel (20) extending therethrough from top to bottom with, optionally, one or more fluid jetting ports (22) in fluid communication with the fluid flow channel, milling apparatus (21, 23, 26) on the body including a plurality of milling inserts (26, 28), each insert mechanically secured in a corresponding recess (25) in the body, said mechanical securement sufficient for effective milling in a wellbore. A wellbore milling method for milling an opening in a selected tubular of a tubular string in a wellbore has been invented that includes installing and using such a mill. | ||||||
| 45 | ROTARY CONE DRILL BIT HAVING A BIT BODY WITH INTEGRAL STABILIZERS | PCT/US9926491 | 1999-11-10 | WO0029709A2 | 2000-05-25 | DAHLEM JAMES S; KNECHT KARL DON |
| A rotary cone drill bit for forming a borehole having a bit body with a plurality of stabilizer pads formed as integral components thereof. The bit body includes an upper portion adapted for connection to a drill string. A number of support arms preferably extend from a lower portion of the bit body. A number of cutter cone assemblies equal to the number of support arms are rotatably mounted on respective support arms and project generally downwardly and inwardly from each support arm. The stabilizer pads project radially outward from the bit body and are disposed intermediate adjacent support arms. Both the stabilizer pads and the support arms preferably have surfaces that form a fluid flow channel therebetween to direct drilling fluids and cuttings to flow upward in the borehole. Layer of hardfacing may be disposed on selected portions of each stabilizer pad. One or more inserts may be installed in selected portions of each stabilizer pad. | ||||||
| 46 | Rock bit | US15050019 | 2016-02-22 | US10024105B2 | 2018-07-17 | Toby Wright; David Bullock |
| A steerable rock bit attached by a drill string to a horizontal directional drill. The bit comprises a plurality of flanges radially extending from a central hub and a slanted face formed in the body of the bit. Cutting elements such as polycrystalline diamond compacts are disposed on the flanges on one side of the flanges such that they will provide cutting force when the bit is rotated in the direction of the cutting elements. The bit is advanced generally straight when the bit is rotated and is advanced at an angle away from the slanted face when the bit is not rotated. | ||||||
| 47 | EARTH-BORING TOOLS INCLUDING PASSIVELY ADJUSTABLE, AGRESSIVENESS-MODIFYING MEMBERS AND RELATED METHODS | US14973282 | 2015-12-17 | US20180179826A9 | 2018-06-28 | Jayesh Rameshlal Jain; Chaitanya K. Vempati; Gregory L. Ricks; Juan Miguel Bilen |
| Earth-boring tools may include a body and a passively adjustable, aggressiveness-modifying member secured to the body. The passively adjustable, aggressiveness-modifying member may be movable between a first position in which the earth-boring tool exhibits a first aggressiveness and a second position in which the earth-boring tool exhibits a second, different aggressiveness responsive to forces acting on the passively adjustable, aggressiveness-modifying member. | ||||||
| 48 | MMC DOWNHOLE TOOL REGION COMPRISING AN ALLOTROPIC MATERIAL | US15571048 | 2015-12-18 | US20180163481A1 | 2018-06-14 | Venkkateesh Parthasarathi Padmarekha; Grant O. Cook, III; Daniel Brendan Voglewede |
| The disclosure provides rotary drill bits with bit head regions or other downhole tools with regions in which an allotropic material in a precursor region has been transformed from a first allotrope to a second allotrope in response to a trigger. The disclosure further provides methods of forming such downhole tools and methods of triggering an allotropic phase transformation during their use. | ||||||
| 49 | Drill bit with extendable gauge pads | US14506730 | 2014-10-06 | US09932780B2 | 2018-04-03 | Reed W. Spencer; Chaitanya K. Vempati |
| A drill bit for use in a wellbore is disclosed, including a bit body having a longitudinal axis; and at least one moveable member associated with a lateral extent of the bit body, wherein the at least one moveable member is configured to translate in a member axis that is substantially longitudinal. Further, a method of drilling a wellbore is disclosed, including providing a drill bit including a bit body having a longitudinal axis and at least one movable member associated with a lateral extent of the bit body; conveying a drill string into a formation, the drill string having the drill bit at the end thereof; drilling the wellbore using the drill string; and selectively translating at least one movable member in a member axis that is substantially longitudinal. | ||||||
| 50 | Drill bit with self-adjusting gage pads | US14516069 | 2014-10-16 | US09663995B2 | 2017-05-30 | Jayesh R. Jain |
| A drill bit and a method of drilling a wellbore utilizing the drill bit is disclosed. The method includes providing a drill bit including a bit body and at least one movable member associated with a lateral extent of the bit body. The method further includes conveying a drill string into a formation, the drill string having the drill bit at the end thereof and drilling the wellbore using the drill string. During drilling, the drill bit can selectively extend the at least one moveable member from the lateral extent of the bit body at a first rate and selectively retract the at least one moveable member to a retracted position at a second rate that is less than the first rate. | ||||||
| 51 | DOWNHOLE DRILLING ASSEMBLY WITH CONCENTRIC ALIGNMENT FEATURE | US15334552 | 2016-10-26 | US20170114597A1 | 2017-04-27 | Josh Chevalier; Chris Bairrington |
| A concentric alignment device is provided that elevates the working face of a drill bit off of the inner wall of a casing or tubing to prevent premature wear of the working face of the drill bit. In horizontal drilling applications, the working face of a drill bit has a tendency to contact or rest on the inner wall of a casing or tubing, which negatively affects the working face of a drill bit. In some embodiments, one or more optional inserts are provided on the shank of a drill bit or on a centralizing sub such that the inserts contact the inner wall of a casing or tubing instead of the working face of the drill bit. In other embodiments, blade packages on a drill bit or sub contact the inner wall of a casing or tubing and also pump drilling fluid in a downhole direction. | ||||||
| 52 | Polycrystalline diamond percussion drill bits using low thrust and torque for application with small diameter drill bits | US13987893 | 2013-09-16 | US09551189B2 | 2017-01-24 | William J. Brady |
| A polycrystalline diamond drill bit for percussion drilling, in small holes in high silica ground. The bits are made having a bit body, and a series of insets locating in the bit body, and the bits are made using a double chisel design, or a modified double chisel design. The inserts are set into the bit body at very specific angles. The inserts have specific lengths to provide cut clearance for the bit body. The cutting angle the and radius on the tip of each insert in addition to the diameter of the inserts, provide a machine thrust pressure and machine torque pressure at low ranges when the PCD bits are used in percussion drilling. | ||||||
| 53 | Gage cutter protection for drilling bits | US13836603 | 2013-03-15 | US09464490B2 | 2016-10-11 | Youhe Zhang; Michael G. Azar; Chen Chen; Yuri Burhan |
| A downhole cutting tool may include a tool body, a plurality of blades extending azimuthally from the tool body comprising a cone region, a shoulder region, and a gage region, at least one cutting element disposed along the cone region and the shoulder region of the blade, and at least one gage cutting element disposed along the gage region of the blade wherein the at least one gage cutting element has a negative backrake ranging from greater than 70 to about 85 degrees. | ||||||
| 54 | DOWNHOLE DRILLING TOOLS INCLUDING LOW FRICTION GAGE PADS WITH ROTATABLE BALLS POSITIONED THEREIN | US15035717 | 2013-12-13 | US20160290069A1 | 2016-10-06 | Shilin Chen |
| In accordance with some embodiments of the present disclosure, a downhole drilling tool comprises a bit body, a blade on an exterior portion of the bit body, and a gage pad on the blade. The gage pad includes a ball retainer and a ball located in the ball retainer such that an exposed portion of the ball is positioned to contact a wellbore and rotate in response to frictional engagement with the wellbore. | ||||||
| 55 | GAUGE FOR BENT HOUSING MOTOR DRILL BIT | US14963983 | 2015-12-09 | US20160168914A1 | 2016-06-16 | Israel Gonzalez |
| A drilling assembly comprises a bit body having a central axis and a blade extending radially outward from the bit body. The blade is defined by a leading edge and a trailing edge. A gauge surface extends from the leading edge to a surface break and may be disposed at a gauge diameter from the central axis. A recessed surface extends from the surface break to the trailing edge. The recessed surface may be configured to avoid contact between the trailing edge and the wellbore wall. | ||||||
| 56 | Drill bit with self-adjusting pads | US13864926 | 2013-04-17 | US09255450B2 | 2016-02-09 | Jayesh R. Jain; Juan Miguel Bilen |
| A drill bit including a bit body and a pad. The pad extends from a retracted position to an extended position from a bit surface at a first rate and retracts from the extended position to a retracted position at a second rate that is less than the first rate. | ||||||
| 57 | Fixed cutter drill bit for abrasive applications | US13196627 | 2011-08-02 | US09145739B2 | 2015-09-29 | Carl Hoffmaster; Shelton W Alsup; Michael G. Azar; Thomas W. Oldham; Stuart R. Oliver; Sidney J. Isnor |
| A cutting tool includes a tool body having a longitudinal axis and a cutting face, a plurality of blades spaced azimuthally about the cutting face and extending at least laterally through a gage region, and a plurality of cutters disposed along the blades. At least two different types of back reaming elements may be disposed on a transitional surface between the gage region of at least one blade and a connection end of the cutting tool. Alternatively, at least one back reaming element may be disposed on a transitional surface between the gage region of at least one blade and a connection end of the cutting tool, and a wear resistant material provided on or in the transitional surface. | ||||||
| 58 | DRILLING APPARATUS | US14429276 | 2012-09-18 | US20150247364A1 | 2015-09-03 | Nuno Da Silva; Olivier Dupont |
| Described herein is a turbine-drill bit assembly (600) in which the gap between the turbine and the drill bit is minimised and overall assembly is substantially shorter. The assembly (600) comprises a box connection turbine (610) connected to a pin connection drill bit (500). The turbine (610) has a turbine body (640, 650, 650a, 650b) around a turbine shaft (630), the turbine body (640, 650, 650a, 650b) having a turbine stabiliser (650, 650a, 650b). The drill bit (500) has a bit gauge or a bit sleeve (530) around a bit shank (520), an end (655) of the turbine stabiliser (650) nearest the drill bit (500) being spaced a first maximum distance (A) from an end (535) of the bit gauge or bit sleeve (530). In addition, a shouldering interface (560) is formed at respective abutment shouldering surfaces (635, 525) of the turbine shaft (630) and bit shank (520) when the drill bit (500) is attached to the turbine shaft (630), the interface (560) being spaced a second maximum distance (B) from an end (535) of the bit gauge or bit sleeve (530). The advantage of these limited distances reduces the annular volume in which mud and rock debris can build up thereby reducing erosion and wear, In addition, a more rigid assembly is provided which is less susceptible to vibrations. This reduces the risk of sticking of the turbine-drill bit assembly in the wellbore and provides better directional control. | ||||||
| 59 | IMPREGNATED DRILL BITS WITH INTEGRATED REAMERS | US14669897 | 2015-03-26 | US20150197999A1 | 2015-07-16 | CODY A. PEARCE; MICHAEL D. RUPP; CHRISTIAN M. LAMBERT |
| Drilling tools include a bit crown and an integrated reamer. The bit crown and integrated reamer can be configured with approximately equal drilling lives. The bit crown can be impregnated with abrasive cutting media and include one or more external flutes. The integrated reamer can be positioned at the base the bit crown and include one or more channels that align with one or more of the outer flutes. The channels can taper such that they increase in width as they extend away from the bit crown. | ||||||
| 60 | DISPLACEABLE COMPONENTS IN DRILLING OPERATIONS | US14412638 | 2012-07-05 | US20150152723A1 | 2015-06-04 | Richard T. Hay |
| A well drilling system can include a drilling tool with at least one component which is displaced by a material that changes shape. The material can be a shape memory material. The material may change shape in response to a temperature change. The component can be a drill bit cutter, a depth of cut control surface, a gauge surface or a stabilizer surface. A method of controlling a drilling operation can include configuring a drilling tool with a material which changes shape, and the material displacing at least one component of the drilling tool during the drilling operation. Displacement of the component can be controlled downhole to maintain drilling parameters (such as torque, vibration, steering performance, etc.) in desired ranges. | ||||||
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