ATE467034T1 - Meisselfuss- und kegelaufschweissung für erdbohrmeissel - Google Patents

Meisselfuss- und kegelaufschweissung für erdbohrmeissel

Info

Publication number
ATE467034T1
ATE467034T1 AT06739026T AT06739026T ATE467034T1 AT E467034 T1 ATE467034 T1 AT E467034T1 AT 06739026 T AT06739026 T AT 06739026T AT 06739026 T AT06739026 T AT 06739026T AT E467034 T1 ATE467034 T1 AT E467034T1
Authority
AT
Austria
Prior art keywords
hardfacing
layer
carbide particles
bit
cone
Prior art date
Application number
AT06739026T
Other languages
English (en)
Inventor
James Overstreet
Original Assignee
Baker Hughes 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 Baker Hughes Inc filed Critical Baker Hughes Inc
Application granted granted Critical
Publication of ATE467034T1 publication Critical patent/ATE467034T1/de

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/001—Interlayers, transition pieces for metallurgical bonding of workpieces
    • B23K35/004—Interlayers, transition pieces for metallurgical bonding of workpieces at least one of the workpieces being of a metal of the iron group
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/32—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550°C
    • B23K35/327—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550°C comprising refractory compounds, e.g. carbides
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • C23C26/02—Coating not provided for in groups C23C2/00 - C23C24/00 applying molten material to the substrate
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment
    • 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
    • E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/04—Welding for other purposes than joining, e.g. built-up welding

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Earth Drilling (AREA)
  • Drilling Tools (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
AT06739026T 2005-03-17 2006-03-16 Meisselfuss- und kegelaufschweissung für erdbohrmeissel ATE467034T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66283305P 2005-03-17 2005-03-17
PCT/US2006/010072 WO2006099629A1 (en) 2005-03-17 2006-03-16 Bit leg and cone hardfacing for earth-boring bit

Publications (1)

Publication Number Publication Date
ATE467034T1 true ATE467034T1 (de) 2010-05-15

Family

ID=36778076

Family Applications (1)

Application Number Title Priority Date Filing Date
AT06739026T ATE467034T1 (de) 2005-03-17 2006-03-16 Meisselfuss- und kegelaufschweissung für erdbohrmeissel

Country Status (11)

Country Link
US (1) US7621347B2 (de)
EP (1) EP1859121B1 (de)
CN (1) CN101163849A (de)
AT (1) ATE467034T1 (de)
CA (1) CA2601196C (de)
DE (1) DE602006014099D1 (de)
MX (1) MX2007011335A (de)
NO (1) NO336164B1 (de)
RU (1) RU2007138267A (de)
UA (1) UA90711C2 (de)
WO (1) WO2006099629A1 (de)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8002052B2 (en) * 2005-09-09 2011-08-23 Baker Hughes Incorporated Particle-matrix composite drill bits with hardfacing
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
US7597159B2 (en) 2005-09-09 2009-10-06 Baker Hughes Incorporated Drill bits and drilling tools including abrasive wear-resistant materials
US7703555B2 (en) * 2005-09-09 2010-04-27 Baker Hughes Incorporated Drilling tools having hardfacing with nickel-based matrix materials and hard particles
CA2662966C (en) 2006-08-30 2012-11-13 Baker Hughes Incorporated Methods for applying wear-resistant material to exterior surfaces of earth-boring tools and resulting structures
RU2009115956A (ru) * 2006-09-29 2010-11-10 Бейкер Хьюз Инкорпорейтед (Us) Абразивные износостойкие материалы для твердосплавного упрочнения, буровые долота и бурильный инструмент, включающие такие материалы, и способы нанесения на них этих материалов
US20080149397A1 (en) * 2006-12-21 2008-06-26 Baker Hughes Incorporated System, method and apparatus for hardfacing composition for earth boring bits in highly abrasive wear conditions using metal matrix materials
US7677338B2 (en) 2007-03-14 2010-03-16 Overstreet James L System, method, and apparatus for passive and active updrill features on roller cone drill bits
US8047309B2 (en) 2007-03-14 2011-11-01 Baker Hughes Incorporated Passive and active up-drill features on fixed cutter earth-boring tools and related systems and methods
WO2008121678A2 (en) * 2007-03-30 2008-10-09 Arcmelt Company, L.C. Protective coating and process for producing the same
US9662733B2 (en) * 2007-08-03 2017-05-30 Baker Hughes Incorporated Methods for reparing particle-matrix composite bodies
US7823664B2 (en) * 2007-08-17 2010-11-02 Baker Hughes Incorporated Corrosion protection for head section of earth boring bit
US20090065260A1 (en) * 2007-09-12 2009-03-12 Baker Hughes Incorporated Hardfacing containing fullerenes for subterranean tools and methods of making
EP2349626B1 (de) 2008-11-21 2017-05-03 Caterpillar, Inc. Abriebfeste zusammensetzung
US9353578B2 (en) * 2009-03-20 2016-05-31 Smith International, Inc. Hardfacing compositions, methods of applying the hardfacing compositions, and tools using such hardfacing compositions
US20100276208A1 (en) * 2009-04-29 2010-11-04 Jiinjen Albert Sue High thermal conductivity hardfacing for drilling applications
US8535408B2 (en) 2009-04-29 2013-09-17 Reedhycalog, L.P. High thermal conductivity hardfacing
US20110042145A1 (en) * 2009-05-04 2011-02-24 Smith International, Inc. Methods for enhancing a surface of a downhole tool and downhole tools having an enhanced surface
US20100276209A1 (en) * 2009-05-04 2010-11-04 Smith International, Inc. Roller Cones, Methods of Manufacturing Such Roller Cones, and Drill Bits Incorporating Such Roller Cones
US20120067651A1 (en) * 2010-09-16 2012-03-22 Smith International, Inc. Hardfacing compositions, methods of applying the hardfacing compositions, and tools using such hardfacing compositions
US8534390B2 (en) 2010-10-01 2013-09-17 Varel International, Ind., L.P. Wear resistant material for the shirttail outer surface of a rotary cone drill bit
US9488007B2 (en) 2010-10-01 2016-11-08 Varel International Ind., L.P. Wear resistant plates on a leading transitional surface of the leg for a rotary cone drill bit
US8522899B2 (en) 2010-10-01 2013-09-03 Varel International, Ind., L.P. Wear resistant material at the shirttail edge and leading edge of a rotary cone drill bit
US8528667B2 (en) 2010-10-01 2013-09-10 Varel International, Ind., L.P. Wear resistant material at the leading edge of the leg for a rotary cone drill bit
WO2012103494A2 (en) * 2011-01-28 2012-08-02 Baker Hughes Incorporated Non-magnetic drill string member with non-magnetic hardfacing and method of making the same
DE102011007694A1 (de) * 2011-04-19 2012-10-25 Robert Bosch Gmbh Bohrwerkzeug bzw. Verfahren zur Herstellung eines Bohrwerkzeugs
US9358631B2 (en) 2011-06-15 2016-06-07 Halliburton Energy Services, Inc. Coarse hard-metal particle internal injection torch and associated compositions, systems, and methods
WO2013112708A1 (en) * 2012-01-24 2013-08-01 Reedhycalog, L.P. High thermal conductivity hardfacing
EP3062955A4 (de) * 2013-10-31 2017-08-30 Vermeer Manufacturing Co., Inc Hartauftragswerkstoff mit carbidteilchen
US10422186B2 (en) 2015-06-25 2019-09-24 Halliburton Energy Services, Inc. Hardfacing metal parts
CN105458256A (zh) 2015-12-07 2016-04-06 株洲西迪硬质合金科技股份有限公司 一种金属基复合材料及其增材制造方法
CN108994310B (zh) * 2018-09-19 2021-11-19 西迪技术股份有限公司 一种高强度耐磨材料、摩擦材料及其等离子转移弧焊接生产工艺
CN112983283B (zh) * 2019-12-18 2023-02-21 新奥科技发展有限公司 等离子炬破岩复合钻头和等离子炬破岩复合钻
US20240068077A1 (en) * 2022-08-31 2024-02-29 Kennametal Inc. Metal matrix composites for drill bits

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4593776A (en) * 1984-03-28 1986-06-10 Smith International, Inc. Rock bits having metallurgically bonded cutter inserts
US4726432A (en) * 1987-07-13 1988-02-23 Hughes Tool Company-Usa Differentially hardfaced rock bit
US5038640A (en) * 1990-02-08 1991-08-13 Hughes Tool Company Titanium carbide modified hardfacing for use on bearing surfaces of earth boring bits
US5492186A (en) * 1994-09-30 1996-02-20 Baker Hughes Incorporated Steel tooth bit with a bi-metallic gage hardfacing
US5944127A (en) * 1996-02-02 1999-08-31 Smith International, Inc. Hardfacing material for rock bits
US6138779A (en) * 1998-01-16 2000-10-31 Dresser Industries, Inc. Hardfacing having coated ceramic particles or coated particles of other hard materials placed on a rotary cone cutter
US6124564A (en) 1998-01-23 2000-09-26 Smith International, Inc. Hardfacing compositions and hardfacing coatings formed by pulsed plasma-transferred arc
US6253862B1 (en) * 1999-02-03 2001-07-03 Baker Hughes Incorporated Earth-boring bit with cutter spear point hardfacing
US6360832B1 (en) * 2000-01-03 2002-03-26 Baker Hughes Incorporated Hardfacing with multiple grade layers
DE10130860C2 (de) 2001-06-28 2003-05-08 Woka Schweistechnik Gmbh Verfahren zur Herstellung von sphäroidischen Sinterpartikeln und Sinterpartikel
US6659206B2 (en) 2001-10-29 2003-12-09 Smith International, Inc. Hardfacing composition for rock bits
US7303030B2 (en) * 2003-11-25 2007-12-04 Smith International, Inc. Barrier coated granules for improved hardfacing material
US7666244B2 (en) 2004-07-08 2010-02-23 Smith International, Inc. Hardfacing milled-tooth drill bits using super dense carbide pellets

Also Published As

Publication number Publication date
DE602006014099D1 (de) 2010-06-17
RU2007138267A (ru) 2009-04-27
CN101163849A (zh) 2008-04-16
WO2006099629A1 (en) 2006-09-21
UA90711C2 (ru) 2010-05-25
EP1859121A1 (de) 2007-11-28
US20060207803A1 (en) 2006-09-21
EP1859121B1 (de) 2010-05-05
NO336164B1 (no) 2015-06-01
CA2601196A1 (en) 2006-09-21
US7621347B2 (en) 2009-11-24
MX2007011335A (es) 2007-12-05
CA2601196C (en) 2011-05-31
NO20074940L (no) 2007-12-11

Similar Documents

Publication Publication Date Title
NO20074940L (no) Borkronefot og kon-hardmetallag for jordborende borkrone
MX2010001688A (es) Proteccion contra corrosion para seleccion de cabeza de barrena de sondeo.
RU2009127643A (ru) Твердосплавный материал для упрочнения буровых долот, используемых в абразивной истирающей среде, и способ их изготовления
US10465512B2 (en) Rotatable cutting tool
US20110042145A1 (en) Methods for enhancing a surface of a downhole tool and downhole tools having an enhanced surface
WO2006104885A3 (en) Rotary drill bit shank, rotary drill bits so equipped, and methods of manufacture
WO2010147718A3 (en) Erosion resistant subterranean drill bits having infiltrated metal matrix bodies
CA2410122A1 (en) Hardfacing composition for rock bits
WO2010056476A3 (en) Carburized monotungsten and ditungsten carbide eutectic particles, materials and earth-boring tools including such particles, and methods of forming such particles, materials, and tools
CA2551393A1 (en) Graded hardfacing for drill bits
CL2009000787A1 (es) Broca para herramienta perforadora de rocas, donde la resistencia de la broca aumenta en una direccion de 5,0 mm bajo una superficie de perforacion, mientras mantiene la dureza de la broca en dicha direccion; procedimiento para aumentar la resistencia de dicha broca; herramienta perforadora de rocas y su uso para perforar roca dura.
WO2010088233A3 (en) Earth boring tools and bodies of such tools including nozzle recesses, and methods of forming same
US8522899B2 (en) Wear resistant material at the shirttail edge and leading edge of a rotary cone drill bit
WO2009036112A1 (en) Hardfacing containing fullerenes for subterranean tools and methods of making
CN103237951B (zh) 用于旋转锥形钻头的巴掌尖外表面的抗磨材料
CN102409984A (zh) 一种环式钻杆接头耐磨带
CN203114204U (zh) 高抗磨螺旋钻铤
CN105200366A (zh) 一种潜孔风动冲击器外套管、前后接头热喷涂强化方法
CN202580483U (zh) 输送管
WO2011019981A3 (en) Roller cone disk with shaped compacts
CN204212698U (zh) 胎体钻头
CN209212158U (zh) 主动切削保径的牙轮钻头
CN204060538U (zh) 耐磨加重钻杆
CN201835751U (zh) 保径空气锤钻头
KR20220008825A (ko) 드릴 스트링 로드

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties