| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | EARTH-BORING TOOLS INCLUDING REPLACEABLE CUTTING STRUCTURES AND RELATED METHODS | US13299914 | 2011-11-18 | US20120125695A1 | 2012-05-24 | Chaitanya K. Vempati; Timothy K. Marvel; Suresh G. Patel |
| Earth-boring tools comprise a body and one or more replaceable cutting structures attached to the body at a face region of the body. Each replaceable cutting structure comprises an attachment member and a cutting portion configured to engage an underlying earth formation. Methods of forming an earth-boring tool comprise attaching one or more cutting elements to a replaceable cutting structure; 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; and attaching the replaceable cutting structure to the body. Methods of repairing an earth-boring tool comprise 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; and attaching the replaceable cutting structure to the earth-boring tool at the at least one portion. | ||||||
| 22 | Cutting Elements for Cutting Tools | US13070524 | 2011-03-24 | US20110315448A1 | 2011-12-29 | Calvin J. Stowe II; Andrew D. Ponder |
| Cutting elements for downhole cutting tools comprise a top surface having a cutting surface portion and a cutting profile disposed across the top surface. The cutting elements comprise first and second longitudinal side surfaces and first and second lateral side surfaces, each having a respective cross-section. The cutting profile can be disposed on the cutting surface either asymmetrically or symmetrically. Asymmetrical disposition permits two cutting elements to be arranged facing each other to cover a center point of a cutting tool. The cutting edge of asymmetrical or symmetrically disposed cutting profiles can have a shape that facilitates self-sharpening during cutting. | ||||||
| 23 | POLYCRYSTALLINE DIAMOND COMPACTS, CUTTING ELEMENTS AND EARTH-BORING TOOLS INCLUDING SUCH COMPACTS, AND METHODS OF FORMING SUCH COMPACTS AND EARTH-BORING TOOLS | US13094075 | 2011-04-26 | US20110266059A1 | 2011-11-03 | Anthony A. DiGiovanni; Iain P. Goudemond |
| Methods of forming a polycrystalline diamond compact for use in an earth-boring tool include forming a body of polycrystalline diamond material including a first material disposed in interstitial spaces between inter-bonded diamond crystals in the body, removing the first material from interstitial spaces in a portion of the body, selecting a second material promoting a higher rate of degradation of the polycrystalline diamond compact than the first material under similar elevated temperature conditions and providing the second material in interstitial spaces in the portion of the body. Methods of drilling include engaging at least one cutter with a formation and wearing a second region of polycrystalline diamond material comprising a second material faster than the first region of polycrystalline diamond material comprising a first material. Polycrystalline diamond compacts and earth-boring tools including such compacts are also disclosed. | ||||||
| 24 | Drill bit with continuously sharp edge cutting elements | US12250445 | 2008-10-13 | US08020641B2 | 2011-09-20 | Robert M. Welch; Eric E. McClain; L. Allen Sinor |
| A method of optimizing drill bit design and an optimized drill bit for drilling a well into an earth formation comprising a bit body; a number of blades spaced around the bit body, each blade having a curved outer edge and a forward face; a first row of cutter pockets recessed into the face along the outer edge of each blade; a second group of cutter pockets recessed into the face of each blade offset from the first row; and a plurality of cutting elements, each cutting element being brazed into a different one of the cutter pockets. | ||||||
| 25 | Cutting element structure for roller cone bit | US10920718 | 2004-08-17 | US07152701B2 | 2006-12-26 | Richard Butland; John J. Herman; Ronald Birne-Browne; Per Nese; Louis Loiselle; J. Daniel Belnap |
| A roller cone drill bit includes a bit body adapted to be coupled to a drill string, a bearing journal depending from the bit body, and a single roller cone rotatably attached to the bearing journal. The single roller cone has a plurality of cutting elements, where at least one of the plurality of cutting elements is formed of an inner region that is at least partially surrounded by an outer region, where the inner region is more abrasive resistant than the outer region. Such an arrangement in a single roller cone bit allows the at least one cutting element to be “self-sharpening.” | ||||||
| 26 | Rotary drill bit compensating for changes in hardness of geological formations | US10413101 | 2003-04-14 | US06962217B1 | 2005-11-08 | William Banning Vail, III |
| A long lasting rotary drill bit for drilling a hole into variable hardness geological formations that has a self-actuating mechanism responsive to the hardness of the geological formation to minimize the time necessary to drill a borehole. A long lasting rotary drill bit for drilling a hole into variable hardness geological formations that has a mechanism controllable from the surface of the earth to change the mechanical configuration of the bit to minimize the time necessary to drill a borehole. A monolithic long lasting rotary drill bit for drilling a hole into a geological formation having hardened rods composed of hard material such as tungsten carbide that are cast into a relatively soft steel matrix material to make a rotary drill bit that compensates for wear on the bottom of the drill bit and that also compensates for lateral wear of the drill bit using passive, self-actuating mechanisms, triggered by bit wear to drill relatively constant diameter holes. | ||||||
| 27 | Earth-boring bit with improved cutting structure | US09170528 | 1998-10-13 | US06209668B1 | 2001-04-03 | Rudolf Carl Otto Pessier; Don Quy Nguyen; Scott R. Schmidt |
| An earth-boring bit has a bit body and at least one cutter rotatably secured to the bit body. The cutter has a cutter shell surface including a gage surface and a heel surface. A plurality of cutting elements inserts are arranged in generally circumferential rows on the cutter. At least one scraper cutting element is secured at least partially to the heel surface of the cutter. The scraper cutting element includes an outermost surface, generally aligned with the gage surface of the cutter, that defines a plow edge or point for shearing engagement with the sidewall of the borehole while redirecting cuttings up the borehole. | ||||||
| 28 | Cutting matrix and method of applying the same | US09014854 | 1998-01-29 | US06167958A | 2001-01-02 | Gerald D. Lynde |
| A method for applying cutting elements to a tool for cutting or milling a metal item in a well, along with the cutting element used in the method. The tool can include one or more blades extending outwardly or downwardly from the tool for cutting a metal item such as the wall of a casing string, or for removing a predetermined length of a casing string in a cutting action. The blade or blades have cutting elements positioned on the leading faces of the blades to engage the casing string or other metal item in the bore hole. Each cutting element is composed of a plurality of effective cutting faces. Each cutting face can have a substantially triangular shape, or a substantially square shape, or some other geometric shape. The cutting elements can be arranged in a random pattern. Each cutting element can be oriented in a random orientation relative to the blade. The cutting elements are shaped so that, regardless of the positioning or orientation of a given cutting element, it will continually present a sharp cutting edge to the metal object being cut. Each cutting face of each cutting element can also have one or more surface irregularities to cause the metal chips cut from the casings to break off at short lengths. | ||||||
| 29 | Impregnated drill bits with adaptive matrix | US87092 | 1998-05-29 | US6095265A | 2000-08-01 | Shelton W. Alsup |
| The present invention provides a diamond impregnated bit with an adaptive matrix in the ribs. The ribs have at least two different areas of metal-matrix composite impregnated with diamonds with different wear resistance such that during boring of formation, the areas will wear at different rates and provide fluid flow spaces across the surface of the ribs. | ||||||
| 30 | Wellbore milling-- drilling | US832483 | 1997-04-02 | US5887668A | 1999-03-30 | David M. Haugen; Frederick T. Tilton; Joseph D. Mills; Randy P. Hutchings; Guy L. McClung, III; Steve R. Delgado |
| A tool for wellbore sidetracking operations has been invented, the tool, in one aspect, having a body, a milling section on the body for milling an opening in a tubular in a first wellbore in a formation, the milling section having milling material thereon, and a drilling section on the body for drilling a second wellbore beyond the window into the formation. A method has been invented for forming an opening in a tubular in a first wellbore in a formation and for drilling a second wellbore from the opening in a single trip procedure, the method positioning a mill drill tool in the tubular at a location at which an opening is desired in the tubular and from which a second wellbore is desired to be drilled, the mill drill tool having drilling apparatus for drilling the second wellbore and milling apparatus for milling an opening through the tubular, milling the opening in the tubular with the milling apparatus thereby exposing the formation for drilling, and drilling with the drilling apparatus a second wellbore beyond the opening in the tubular into the formation. | ||||||
| 31 | Monolithic self sharpening rotary drill bit having tungsten carbide rods cast in steel alloys | US825575 | 1997-03-31 | US5836409A | 1998-11-17 | William Banning Vail, III |
| A monolithic long lasting rotary drill bit for drilling a hole into a geological formation having at least one hardened rod which has a length of at least three times its diameter composed of hard material such as tungsten carbide that is cast into a relatively soft steel matrix material to make a rotary drill bit that compensates for wear on the bottom of the drill bit and that also compensates for lateral wear of the drill bit using passive, self-actuating mechanisms, triggered by bit wear to drill relatively constant diameter holes. | ||||||
| 32 | Method of using composite cermet articles | US576117 | 1995-12-21 | US5806934A | 1998-09-15 | Ted R. Massa; John S. Van Kirk; Edward V. Conley |
| Methods for making, methods for using and articles comprising cermets, preferably cemented carbides and more preferably tungsten carbide, having at least two regions exhibiting at least one property that differs are discussed. Preferably, the cermets further exhibit uniform or controlled wear to impart a self-sharpening character to an article. The multiple-region cermets are particularly useful in wear applications. The cermets are manufactured by juxtaposing and densifying at least two powder blends having different properties (e.g., differential carbide grain size or differential carbide chemistry or differential binder content or differential binder chemistry or any combination of the preceding). Preferably, a first region of the cermet comprises a first ceramic component having a relatively coarse grain size and a prescribed binder content and a second region, juxtaposing or adjoining the first region, comprises a second ceramic component, preferably carbide(s), having a grain size less than the grain size of the first region, a second binder content greater than the binder content of the first region or both. These articles have an extended useful life in such applications as, for example, wear. The multiple region cermets of the present invention may be used with articles comprising tools for materials manipulation or removal including, for example, mining, construction, agricultural, and metal removal applications. | ||||||
| 33 | Composite cermet articles and method of making | US576532 | 1995-12-21 | US5776593A | 1998-07-07 | Ted R. Massa; John S. Van Kirk; Edward V. Conley |
| Methods for making, methods for using and articles comprising cermets, preferably cemented carbides and more preferably tungsten carbide, having at least two regions exhibiting at least one property that differs are discussed. Preferably, the cermets further exhibit uniform or controlled wear to impart a self-sharpening character to an article. The multiple-region cermets are particularly useful in wear applications. The cermets are manufactured by juxtaposing and densifying at least two powder blends having different properties (e.g., differential carbide grain size or differential carbide chemistry or differential binder content or differential binder chemistry or any combination of the preceding). Preferably, a first region of the cermet comprises a first ceramic component having a relatively coarse grain size and a prescribed binder content and a second region, juxtaposing or adjoining the first region, comprises a second ceramic component, preferably carbide(s), having a grain size less than the grain size of the first region, a second binder content greater than the binder content of the first region or both. These articles have an extended useful life relative to the useful life of monolithic cermets in such applications as, for example, wear. The multiple region cermets of the present invention may be used with articles comprising tools for materials manipulation or removal including, for example, mining, construction, agricultural, and metal removal applications. | ||||||
| 34 | Abrasive member | US821232 | 1977-08-02 | US4114322A | 1978-09-19 | Harold Jack Greenspan |
| An abrasive member providing a working surface characterized by having a multiplicity of upstanding angularly extending ridges. Particles of an abrasive material, such as diamond, are affixed to the ridges in a manner so that as the tops of the ridges wear down, fresh particles of the abrasive material will become reembedded therein, thereby continually presenting a fresh cutting surface. | ||||||
| 35 | Impregnated diamond bit | US3537538D | 1969-05-21 | US3537538A | 1970-11-03 | GENEROUX ROBERT E |
| 36 | Drill bit | US85048359 | 1959-11-02 | US2998088A | 1961-08-29 | THOMAS PENNINGTON |
| 37 | Rotary bit | US1180135 | 1935-03-19 | US2121202A | 1938-06-21 | KILLGORE ROBERT J |
| 38 | Well bit | US56691231 | 1931-10-05 | US1923488A | 1933-08-22 | HOWARD JOHN H; CATLAND ALFRED C |
| 39 | Well drill | US66492723 | 1923-09-26 | US1505460A | 1924-08-19 | GUSTAV GRIESCHE |
| 40 | Well-drilling apparatus. | US1914845891 | 1914-06-18 | US1168226A | 1916-01-11 | RAND ED |
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