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DE60117435D1 - Asymmetrischer diamantimprägnierter Bohrmeissel - Google Patents

Asymmetrischer diamantimprägnierter Bohrmeissel

Info

Publication number
DE60117435D1
DE60117435D1 DE60117435T DE60117435T DE60117435D1 DE 60117435 D1 DE60117435 D1 DE 60117435D1 DE 60117435 T DE60117435 T DE 60117435T DE 60117435 T DE60117435 T DE 60117435T DE 60117435 D1 DE60117435 D1 DE 60117435D1
Authority
DE
Germany
Prior art keywords
drill bit
impregnated drill
asymmetrical diamond
asymmetrical
diamond
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE60117435T
Other languages
English (en)
Other versions
DE60117435T2 (de
Inventor
David Truax
Timothy Paul Beaton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Smith International Inc
Original Assignee
Smith International Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Smith International Inc filed Critical Smith International Inc
Publication of DE60117435D1 publication Critical patent/DE60117435D1/de
Application granted granted Critical
Publication of DE60117435T2 publication Critical patent/DE60117435T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1092—Gauge section of drill bits
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/265—Bi-center drill bits, i.e. an integral bit and eccentric reamer used to simultaneously drill and underream the hole
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Earth Drilling (AREA)
  • Drilling Tools (AREA)
DE60117435T 2000-07-19 2001-07-18 Asymmetrischer diamantimprägnierter Schleifbohrkopf Expired - Lifetime DE60117435T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/619,742 US6474425B1 (en) 2000-07-19 2000-07-19 Asymmetric diamond impregnated drill bit
US619742 2000-07-19

Publications (2)

Publication Number Publication Date
DE60117435D1 true DE60117435D1 (de) 2006-04-27
DE60117435T2 DE60117435T2 (de) 2006-10-12

Family

ID=24483115

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60117435T Expired - Lifetime DE60117435T2 (de) 2000-07-19 2001-07-18 Asymmetrischer diamantimprägnierter Schleifbohrkopf

Country Status (3)

Country Link
US (1) US6474425B1 (de)
EP (1) EP1174584B1 (de)
DE (1) DE60117435T2 (de)

Families Citing this family (138)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7562725B1 (en) * 2003-07-10 2009-07-21 Broussard Edwin J Downhole pilot bit and reamer with maximized mud motor dimensions
US20050211475A1 (en) 2004-04-28 2005-09-29 Mirchandani Prakash K Earth-boring bits
US9428822B2 (en) 2004-04-28 2016-08-30 Baker Hughes Incorporated 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
US7513320B2 (en) 2004-12-16 2009-04-07 Tdy Industries, Inc. Cemented carbide inserts for earth-boring bits
US8637127B2 (en) 2005-06-27 2014-01-28 Kennametal Inc. Composite article with coolant channels and tool fabrication method
US7687156B2 (en) 2005-08-18 2010-03-30 Tdy Industries, Inc. Composite cutting inserts and methods of making the same
US7776256B2 (en) 2005-11-10 2010-08-17 Baker Huges Incorporated Earth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies
US8002052B2 (en) * 2005-09-09 2011-08-23 Baker Hughes Incorporated Particle-matrix composite drill bits with hardfacing
US7703555B2 (en) 2005-09-09 2010-04-27 Baker Hughes Incorporated Drilling tools having hardfacing with nickel-based matrix materials and hard particles
US7597159B2 (en) 2005-09-09 2009-10-06 Baker Hughes Incorporated Drill bits and drilling tools including abrasive wear-resistant materials
US7997359B2 (en) 2005-09-09 2011-08-16 Baker Hughes Incorporated Abrasive wear-resistant hardfacing materials, drill bits and drilling tools including abrasive wear-resistant hardfacing materials
US8770324B2 (en) 2008-06-10 2014-07-08 Baker Hughes Incorporated Earth-boring tools including sinterbonded components and partially formed tools configured to be sinterbonded
US7802495B2 (en) 2005-11-10 2010-09-28 Baker Hughes Incorporated Methods of forming earth-boring rotary drill bits
US7807099B2 (en) 2005-11-10 2010-10-05 Baker Hughes Incorporated Method for forming earth-boring tools comprising silicon carbide composite materials
US7559379B2 (en) 2005-11-21 2009-07-14 Hall David R Downhole steering
US7424922B2 (en) 2005-11-21 2008-09-16 Hall David R Rotary valve for a jack hammer
US7591327B2 (en) 2005-11-21 2009-09-22 Hall David R Drilling at a resonant frequency
US8297375B2 (en) 2005-11-21 2012-10-30 Schlumberger Technology Corporation Downhole turbine
US7497279B2 (en) 2005-11-21 2009-03-03 Hall David R Jack element adapted to rotate independent of a drill bit
US7753144B2 (en) 2005-11-21 2010-07-13 Schlumberger Technology Corporation Drill bit with a retained jack element
US7617886B2 (en) 2005-11-21 2009-11-17 Hall David R Fluid-actuated hammer bit
US7967082B2 (en) 2005-11-21 2011-06-28 Schlumberger Technology Corporation Downhole mechanism
US8225883B2 (en) 2005-11-21 2012-07-24 Schlumberger Technology Corporation Downhole percussive tool with alternating pressure differentials
US8130117B2 (en) 2006-03-23 2012-03-06 Schlumberger Technology Corporation Drill bit with an electrically isolated transmitter
US7484576B2 (en) 2006-03-23 2009-02-03 Hall David R Jack element in communication with an electric motor and or generator
US8528664B2 (en) 2005-11-21 2013-09-10 Schlumberger Technology Corporation Downhole mechanism
US8522897B2 (en) 2005-11-21 2013-09-03 Schlumberger Technology Corporation Lead the bit rotary steerable tool
US8297378B2 (en) 2005-11-21 2012-10-30 Schlumberger Technology Corporation Turbine driven hammer that oscillates at a constant frequency
US7549489B2 (en) 2006-03-23 2009-06-23 Hall David R Jack element with a stop-off
US7571780B2 (en) 2006-03-24 2009-08-11 Hall David R Jack element for a drill bit
US7641002B2 (en) 2005-11-21 2010-01-05 Hall David R Drill bit
US7533737B2 (en) 2005-11-21 2009-05-19 Hall David R Jet arrangement for a downhole drill bit
US8360174B2 (en) 2006-03-23 2013-01-29 Schlumberger Technology Corporation Lead the bit rotary steerable tool
US7600586B2 (en) 2006-12-15 2009-10-13 Hall David R System for steering a drill string
US8316964B2 (en) 2006-03-23 2012-11-27 Schlumberger Technology Corporation Drill bit transducer device
US7419016B2 (en) 2006-03-23 2008-09-02 Hall David R Bi-center drill bit
US8408336B2 (en) 2005-11-21 2013-04-02 Schlumberger Technology Corporation Flow guide actuation
US7419018B2 (en) 2006-11-01 2008-09-02 Hall David R Cam assembly in a downhole component
US8205688B2 (en) 2005-11-21 2012-06-26 Hall David R Lead the bit rotary steerable system
US7900720B2 (en) 2006-01-18 2011-03-08 Schlumberger Technology Corporation Downhole drive shaft connection
AU2007216355B2 (en) 2006-02-14 2011-10-20 Smart Stabilizer Systems Limited Downhole assembly and cutter assembly
EP2004948A2 (de) 2006-03-17 2008-12-24 Halliburton Energy Services, Inc. Matrix bohrspitzen mit nach hinten geneigten schneidelementen
JP4809711B2 (ja) * 2006-03-22 2011-11-09 日本プロジェクト株式会社 ドリル
US7694756B2 (en) 2006-03-23 2010-04-13 Hall David R Indenting member for a drill bit
US8011457B2 (en) 2006-03-23 2011-09-06 Schlumberger Technology Corporation Downhole hammer assembly
US7661487B2 (en) 2006-03-23 2010-02-16 Hall David R Downhole percussive tool with alternating pressure differentials
USD620510S1 (en) 2006-03-23 2010-07-27 Schlumberger Technology Corporation Drill bit
AU2007244947B2 (en) 2006-04-27 2013-10-10 Kennametal Inc. Modular fixed cutter earth-boring bits, modular fixed cutter earth-boring bit bodies, and related methods
US20080035389A1 (en) 2006-08-11 2008-02-14 Hall David R Roof Mining Drill Bit
US8240404B2 (en) 2006-08-11 2012-08-14 Hall David R Roof bolt bit
US9051795B2 (en) 2006-08-11 2015-06-09 Schlumberger Technology Corporation Downhole drill bit
US8215420B2 (en) 2006-08-11 2012-07-10 Schlumberger Technology Corporation Thermally stable pointed diamond with increased impact resistance
US9145742B2 (en) 2006-08-11 2015-09-29 Schlumberger Technology Corporation Pointed working ends on a drill bit
US8122980B2 (en) 2007-06-22 2012-02-28 Schlumberger Technology Corporation Rotary drag bit with pointed cutting elements
US8622155B2 (en) 2006-08-11 2014-01-07 Schlumberger Technology Corporation Pointed diamond working ends on a shear bit
US8567532B2 (en) 2006-08-11 2013-10-29 Schlumberger Technology Corporation Cutting element attached to downhole fixed bladed bit at a positive rake angle
US7886851B2 (en) * 2006-08-11 2011-02-15 Schlumberger Technology Corporation Drill bit nozzle
US8449040B2 (en) 2006-08-11 2013-05-28 David R. Hall Shank for an attack tool
US8714285B2 (en) 2006-08-11 2014-05-06 Schlumberger Technology Corporation Method for drilling with a fixed bladed bit
US7637574B2 (en) 2006-08-11 2009-12-29 Hall David R Pick assembly
US8191651B2 (en) 2006-08-11 2012-06-05 Hall David R Sensor on a formation engaging member of a drill bit
US8590644B2 (en) 2006-08-11 2013-11-26 Schlumberger Technology Corporation Downhole drill bit
US8616305B2 (en) 2006-08-11 2013-12-31 Schlumberger Technology Corporation Fixed bladed bit that shifts weight between an indenter and cutting elements
US7871133B2 (en) 2006-08-11 2011-01-18 Schlumberger Technology Corporation Locking fixture
US9316061B2 (en) 2006-08-11 2016-04-19 David R. Hall High impact resistant degradation element
US7669674B2 (en) 2006-08-11 2010-03-02 Hall David R Degradation assembly
RU2009111383A (ru) 2006-08-30 2010-10-10 Бейкер Хьюз Инкорпорейтед (Us) Способы нанесения износостойкого материала на внешние поверхности буровых инструментов и соответствующие конструкции
US7527110B2 (en) 2006-10-13 2009-05-05 Hall David R Percussive drill bit
EP2078101A2 (de) 2006-10-25 2009-07-15 TDY Industries, Inc. Artikel mit erhöhter widerstandsfähigkeit gegenüber thermischem cracken
US9068410B2 (en) 2006-10-26 2015-06-30 Schlumberger Technology Corporation Dense diamond body
US8960337B2 (en) 2006-10-26 2015-02-24 Schlumberger Technology Corporation High impact resistant tool with an apex width between a first and second transitions
US7954401B2 (en) 2006-10-27 2011-06-07 Schlumberger Technology Corporation Method of assembling a drill bit with a jack element
US8272295B2 (en) * 2006-12-07 2012-09-25 Baker Hughes Incorporated Displacement members and intermediate structures for use in forming at least a portion of bit bodies of earth-boring rotary drill bits
US8459381B2 (en) 2006-12-14 2013-06-11 Longyear Tm, Inc. Drill bits with axially-tapered waterways
US9506298B2 (en) * 2013-11-20 2016-11-29 Longyear Tm, Inc. Drill bits having blind-hole flushing and systems for using same
US7392857B1 (en) 2007-01-03 2008-07-01 Hall David R Apparatus and method for vibrating a drill bit
USD678368S1 (en) 2007-02-12 2013-03-19 David R. Hall Drill bit with a pointed cutting element
US8839888B2 (en) 2010-04-23 2014-09-23 Schlumberger Technology Corporation Tracking shearing cutters on a fixed bladed drill bit with pointed cutting elements
USD674422S1 (en) 2007-02-12 2013-01-15 Hall David R Drill bit with a pointed cutting element and a shearing cutting element
US7846551B2 (en) 2007-03-16 2010-12-07 Tdy Industries, Inc. Composite articles
US7866416B2 (en) 2007-06-04 2011-01-11 Schlumberger Technology Corporation Clutch for a jack element
US7967083B2 (en) 2007-09-06 2011-06-28 Schlumberger Technology Corporation Sensor for determining a position of a jack element
US7721826B2 (en) 2007-09-06 2010-05-25 Schlumberger Technology Corporation Downhole jack assembly sensor
US8631883B2 (en) * 2008-03-06 2014-01-21 Varel International Ind., L.P. Sectorial force balancing of drill bits
BRPI0909244A2 (pt) * 2008-03-31 2015-08-25 Halliburton Energy Services Inc Sistema e método para operações de alargamento de furo de deslocamento único
US8540037B2 (en) 2008-04-30 2013-09-24 Schlumberger Technology Corporation Layered polycrystalline diamond
US8025107B2 (en) * 2008-05-15 2011-09-27 Longyear Tm, Inc. Reamer with polycrystalline diamond compact inserts
US8790439B2 (en) 2008-06-02 2014-07-29 Kennametal Inc. Composite sintered powder metal articles
US8221517B2 (en) 2008-06-02 2012-07-17 TDY Industries, LLC Cemented carbide—metallic alloy composites
US8327951B2 (en) * 2008-06-27 2012-12-11 Omni Ip Ltd. Drill bit having functional articulation to drill boreholes in earth formations in all directions
US7849940B2 (en) * 2008-06-27 2010-12-14 Omni Ip Ltd. Drill bit having the ability to drill vertically and laterally
US8261632B2 (en) 2008-07-09 2012-09-11 Baker Hughes Incorporated Methods of forming earth-boring drill bits
US8322465B2 (en) 2008-08-22 2012-12-04 TDY Industries, LLC Earth-boring bit parts including hybrid cemented carbides and methods of making the same
US8025112B2 (en) 2008-08-22 2011-09-27 Tdy Industries, Inc. Earth-boring bits and other parts including cemented carbide
US20100181116A1 (en) * 2009-01-16 2010-07-22 Baker Hughes Incororated Impregnated drill bit with diamond pins
GB0904791D0 (en) 2009-03-20 2009-05-06 Turbopower Drilling Sal Downhole drilling assembly
US8701799B2 (en) 2009-04-29 2014-04-22 Schlumberger Technology Corporation Drill bit cutter pocket restitution
US8272816B2 (en) 2009-05-12 2012-09-25 TDY Industries, LLC Composite cemented carbide rotary cutting tools and rotary cutting tool blanks
US8191657B2 (en) * 2009-05-28 2012-06-05 Baker Hughes Incorporated Rotary drag bits for cutting casing and drilling subterranean formations
US8201610B2 (en) 2009-06-05 2012-06-19 Baker Hughes Incorporated Methods for manufacturing downhole tools and downhole tool parts
US20110000718A1 (en) * 2009-07-02 2011-01-06 Smith International, Inc. Integrated cast matrix sleeve api connection bit body and method of using and manufacturing the same
US8308096B2 (en) 2009-07-14 2012-11-13 TDY Industries, LLC Reinforced roll and method of making same
US8911474B2 (en) 2009-07-16 2014-12-16 Howmedica Osteonics Corp. Suture anchor implantation instrumentation system
CA2770377C (en) 2009-08-07 2017-07-25 Smith International, Inc. Polycrystalline diamond material with high toughness and high wear resistance
US8573330B2 (en) * 2009-08-07 2013-11-05 Smith International, Inc. Highly wear resistant diamond insert with improved transition structure
AU2010279280B2 (en) * 2009-08-07 2016-11-03 Smith International, Inc. Diamond transition layer construction with improved thickness ratio
US8695733B2 (en) * 2009-08-07 2014-04-15 Smith International, Inc. Functionally graded polycrystalline diamond insert
US20110036643A1 (en) * 2009-08-07 2011-02-17 Belnap J Daniel Thermally stable polycrystalline diamond constructions
WO2011017625A2 (en) * 2009-08-07 2011-02-10 Smith International, Inc. Method of forming a thermally stable diamond cutting element
CA2713309C (en) 2009-08-20 2013-07-02 Howmedica Osteonics Corp. Flexible acl instrumentation, kit and method
US9643236B2 (en) 2009-11-11 2017-05-09 Landis Solutions Llc Thread rolling die and method of making same
US8550190B2 (en) 2010-04-01 2013-10-08 David R. Hall Inner bit disposed within an outer bit
US8418784B2 (en) 2010-05-11 2013-04-16 David R. Hall Central cutting region of a drilling head assembly
EP2571646A4 (de) 2010-05-20 2016-10-05 Baker Hughes Inc Verfahren zur formung mindestens eines teils eines erdbohrwerkzeugs
EP2571648A4 (de) 2010-05-20 2016-10-05 Baker Hughes Inc Verfahren zur formung mindestens eines teils eines erdbohrwerkzeugs und in diesen verfahren geformte artikel
US8978734B2 (en) 2010-05-20 2015-03-17 Baker Hughes Incorporated Methods of forming at least a portion of earth-boring tools, and articles formed by such methods
US8820440B2 (en) 2010-10-01 2014-09-02 David R. Hall Drill bit steering assembly
US8333254B2 (en) 2010-10-01 2012-12-18 Hall David R Steering mechanism with a ring disposed about an outer diameter of a drill bit and method for drilling
US20120192680A1 (en) * 2011-01-27 2012-08-02 Baker Hughes Incorporated Fabricated Mill Body with Blade Pockets for Insert Placement and Alignment
US8342266B2 (en) 2011-03-15 2013-01-01 Hall David R Timed steering nozzle on a downhole drill bit
US9795398B2 (en) 2011-04-13 2017-10-24 Howmedica Osteonics Corp. Flexible ACL instrumentation, kit and method
US8800848B2 (en) 2011-08-31 2014-08-12 Kennametal Inc. Methods of forming wear resistant layers on metallic surfaces
US9016406B2 (en) 2011-09-22 2015-04-28 Kennametal Inc. Cutting inserts for earth-boring bits
US20130112484A1 (en) * 2011-11-04 2013-05-09 Shilin Chen Eccentric sleeve for directional drilling systems
US9445803B2 (en) 2011-11-23 2016-09-20 Howmedica Osteonics Corp. Filamentary suture anchor
US9808242B2 (en) 2012-04-06 2017-11-07 Howmedica Osteonics Corp. Knotless filament anchor for soft tissue repair
US20140039552A1 (en) 2012-08-03 2014-02-06 Howmedica Osteonics Corp. Soft tissue fixation devices and methods
US9078740B2 (en) 2013-01-21 2015-07-14 Howmedica Osteonics Corp. Instrumentation and method for positioning and securing a graft
US9402620B2 (en) 2013-03-04 2016-08-02 Howmedica Osteonics Corp. Knotless filamentary fixation devices, assemblies and systems and methods of assembly and use
WO2014176270A1 (en) 2013-04-22 2014-10-30 Pivot Medical, Inc. Method and apparatus for attaching tissue to bone
US9469015B2 (en) 2013-07-08 2016-10-18 Varel International, Ind., L.P. Impregnated rotary bit with high density monoblock center structure
US9986992B2 (en) 2014-10-28 2018-06-05 Stryker Corporation Suture anchor and associated methods of use
CN105952382A (zh) * 2016-06-28 2016-09-21 四川川庆石油钻采科技有限公司 一种具有双切削结构孕镶金刚石钻头
US10494875B2 (en) 2017-01-13 2019-12-03 Baker Hughes, A Ge Company, Llc Impregnated drill bit including a planar blade profile along drill bit face
US10774595B2 (en) 2017-03-17 2020-09-15 Baker Hughes Earth-boring tools with reduced vibrational response and related methods
US11098541B2 (en) * 2018-03-16 2021-08-24 Ulterra Drilling Technologies, L.P. Polycrystalline-diamond compact air bit
USD991993S1 (en) 2020-06-24 2023-07-11 Sumitomo Electric Hardmetal Corp. Cutting tool
CN113882800A (zh) * 2021-08-27 2022-01-04 上海市基础工程集团有限公司 可拆卸式潜水钻机保径装置

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2953354A (en) * 1958-05-15 1960-09-20 Edward B Williams Iii Drill bit
US3159224A (en) * 1960-12-30 1964-12-01 Atlantic Refining Co Underdrilling rotary bit
US3367430A (en) * 1966-08-24 1968-02-06 Christensen Diamond Prod Co Combination drill and reamer bit
US4266621A (en) * 1977-06-22 1981-05-12 Christensen, Inc. Well casing window mill
US4274769A (en) * 1978-04-21 1981-06-23 Acker Drill Company, Inc. Impregnated diamond drill bit construction
US4234048A (en) * 1978-06-12 1980-11-18 Christensen, Inc. Drill bits embodying impregnated segments
DE3414206C1 (de) * 1984-04-14 1985-02-21 Norton Christensen, Inc., Salt Lake City, Utah Drehbohrmeissel fuer Tiefbohrungen
US5373900A (en) * 1988-04-15 1994-12-20 Baker Hughes Incorporated Downhole milling tool
US5042596A (en) * 1989-02-21 1991-08-27 Amoco Corporation Imbalance compensated drill bit
US5649603A (en) * 1992-05-27 1997-07-22 Astec Developments Limited Downhole tools having circumferentially spaced rolling elements
DE4233770A1 (de) * 1992-10-07 1994-04-14 Hilti Ag Verfahren zur Herstellung von Diamantbohrkronen
US5992548A (en) * 1995-08-15 1999-11-30 Diamond Products International, Inc. Bi-center bit with oppositely disposed cutting surfaces
US5904213A (en) * 1995-10-10 1999-05-18 Camco International (Uk) Limited Rotary drill bits
GB2315789B (en) * 1996-08-01 2000-06-14 Camco International Improvements in or relating to rotary drill bits
US5957223A (en) * 1997-03-05 1999-09-28 Baker Hughes Incorporated Bi-center drill bit with enhanced stabilizing features
US6123160A (en) * 1997-04-02 2000-09-26 Baker Hughes Incorporated Drill bit with gage definition region
US6206117B1 (en) * 1997-04-02 2001-03-27 Baker Hughes Incorporated Drilling structure with non-axial gage
US6241036B1 (en) * 1998-09-16 2001-06-05 Baker Hughes Incorporated Reinforced abrasive-impregnated cutting elements, drill bits including same

Also Published As

Publication number Publication date
DE60117435T2 (de) 2006-10-12
EP1174584B1 (de) 2006-03-01
US6474425B1 (en) 2002-11-05
EP1174584A2 (de) 2002-01-23
EP1174584A3 (de) 2002-11-27

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