DE602004031205D1 - Bohrmeissel - Google Patents

Bohrmeissel

Info

Publication number
DE602004031205D1
DE602004031205D1 DE602004031205T DE602004031205T DE602004031205D1 DE 602004031205 D1 DE602004031205 D1 DE 602004031205D1 DE 602004031205 T DE602004031205 T DE 602004031205T DE 602004031205 T DE602004031205 T DE 602004031205T DE 602004031205 D1 DE602004031205 D1 DE 602004031205D1
Authority
DE
Germany
Prior art keywords
drill bit
drill
bit
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
DE602004031205T
Other languages
English (en)
Inventor
Gordon A Tibbitts
Paul O Padgett
Harry B Curlett
Samuel R Curlett
Nathan J Harder
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.)
PDTI Holdings LLC
Original Assignee
PDTI Holdings LLC
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 PDTI Holdings LLC filed Critical PDTI Holdings LLC
Publication of DE602004031205D1 publication Critical patent/DE602004031205D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/16—Applying separate balls or pellets by the pressure of the drill, so-called shot-drilling
DE602004031205T 2003-04-16 2004-04-15 Bohrmeissel Expired - Lifetime DE602004031205D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US46390303P 2003-04-16 2003-04-16
PCT/US2004/011578 WO2004094734A2 (en) 2003-04-16 2004-04-15 Drill bit

Publications (1)

Publication Number Publication Date
DE602004031205D1 true DE602004031205D1 (de) 2011-03-10

Family

ID=33310838

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602004031205T Expired - Lifetime DE602004031205D1 (de) 2003-04-16 2004-04-15 Bohrmeissel

Country Status (6)

Country Link
US (2) US7258176B2 (de)
EP (1) EP1616071B1 (de)
CA (1) CA2522568C (de)
DE (1) DE602004031205D1 (de)
NO (1) NO333751B1 (de)
WO (1) WO2004094734A2 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7343987B2 (en) * 2003-04-16 2008-03-18 Particle Drilling Technologies, Inc. Impact excavation system and method with suspension flow control
US20090200080A1 (en) * 2003-04-16 2009-08-13 Tibbitts Gordon A Impact excavation system and method with particle separation
US7798249B2 (en) * 2003-04-16 2010-09-21 Pdti Holdings, Llc Impact excavation system and method with suspension flow control
US7398838B2 (en) 2003-04-16 2008-07-15 Particle Drilling Technologies, Inc. Impact excavation system and method with two-stage inductor
CA2522568C (en) 2003-04-16 2011-11-08 Particle Drilling, Inc. Drill bit
US8342265B2 (en) 2003-04-16 2013-01-01 Pdti Holdings, Llc Shot blocking using drilling mud
US7503407B2 (en) 2003-04-16 2009-03-17 Particle Drilling Technologies, Inc. Impact excavation system and method
US7383896B2 (en) * 2003-04-16 2008-06-10 Particle Drilling Technologies, Inc. Impact excavation system and method with particle separation
US7793741B2 (en) 2003-04-16 2010-09-14 Pdti Holdings, Llc Impact excavation system and method with injection system
US7398839B2 (en) 2003-04-16 2008-07-15 Particle Drilling Technologies, Inc. Impact excavation system and method with particle trap
WO2004106693A2 (en) * 2003-05-27 2004-12-09 Particle Drilling, Inc. Method and appartus for cutting earthen formations
US7997355B2 (en) 2004-07-22 2011-08-16 Pdti Holdings, Llc Apparatus for injecting impactors into a fluid stream using a screw extruder
CN101641491B (zh) * 2007-03-22 2013-03-20 国际壳牌研究有限公司 具有螺旋形狭槽的定距支座
US20100307830A1 (en) * 2007-05-16 2010-12-09 Curlett Harry B Method and system for particle jet boring
US20090038856A1 (en) * 2007-07-03 2009-02-12 Particle Drilling Technologies, Inc. Injection System And Method
US7987928B2 (en) 2007-10-09 2011-08-02 Pdti Holdings, Llc Injection system and method comprising an impactor motive device
US7980326B2 (en) 2007-11-15 2011-07-19 Pdti Holdings, Llc Method and system for controlling force in a down-hole drilling operation
WO2009099945A2 (en) 2008-02-01 2009-08-13 Particle Drilling Technologies, Inc. Methods of using a particle impact drilling system for removing near-borehole damage, milling objects in a wellbore, under reaming, coring, perforating, assisting annular flow, and associated methods
US20100155063A1 (en) * 2008-12-23 2010-06-24 Pdti Holdings, Llc Particle Drilling System Having Equivalent Circulating Density
US8485279B2 (en) * 2009-04-08 2013-07-16 Pdti Holdings, Llc Impactor excavation system having a drill bit discharging in a cross-over pattern
US8925653B2 (en) * 2011-02-28 2015-01-06 TD Tools, Inc. Apparatus and method for high pressure abrasive fluid injection
CN107905732B (zh) * 2017-12-18 2024-03-29 中国石油集团川庆钻探工程有限公司 一种粒子冲击钻井用三牙轮钻头
FR3118781B1 (fr) * 2021-01-11 2023-01-13 Association Pour La Rech Et Le Developpement Des Methodes Et Processus Industriels Armines Méthode de forage profond et ensemble de forage

Family Cites Families (122)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123159A (en) 1964-03-03 Jet underreaming
US2626779A (en) * 1949-12-16 1953-01-27 Arthur L Armentrout Method of recovering lost circulation occurring in production strata in wells
US2727727A (en) * 1952-01-29 1955-12-20 Exxon Research Engineering Co Combination pellet impact drilling and rotary shot drilling
US2809013A (en) * 1952-01-29 1957-10-08 Exxon Research Engineering Co Apparatus for maintaining constant weight on a well tool
US2807442A (en) * 1952-01-29 1957-09-24 Exxon Research Engineering Co Momentum pellet impact drilling apparatus
US2724574A (en) * 1952-01-29 1955-11-22 Exxon Research Engineering Co Hydraulic standoff control for pellet impact drilling
US2761651A (en) * 1952-03-06 1956-09-04 Exxon Research Engineering Co Apparatus for cyclic pellet impact drilling
US2728557A (en) * 1953-07-15 1955-12-27 Exxon Research Engineering Co Controlling off-bottom position of pellet impact drill
US2771141A (en) 1953-09-03 1956-11-20 Gem Oil Tool Company Inc Jet wall cleaner
US2841365A (en) * 1953-10-27 1958-07-01 Exxon Research Engineering Co Pellet recycle control in pellet impact drilling
US2815931A (en) * 1954-04-01 1957-12-10 Exxon Research Engineering Co Pellet retention method and apparatus for pellet impact drilling
US2779571A (en) * 1954-04-09 1957-01-29 Exxon Research Engineering Co Pellet impact drill bit with controlled pellet return
US2868509A (en) * 1956-06-07 1959-01-13 Jersey Prod Res Co Pellet impact drilling apparatus
US2954122A (en) 1957-06-17 1960-09-27 Petroleum Res Corp Method and apparatus for separating materials
US3001652A (en) * 1958-10-24 1961-09-26 Fossil Fuels Inc Apparatus for feeding finely divided solids
US3084752A (en) * 1958-12-22 1963-04-09 Tiraspolsky Wladimir Drill bit tool for well drilling
US3112800A (en) 1959-08-28 1963-12-03 Phillips Petroleum Co Method of drilling with high velocity jet cutter rock bit
US3055442A (en) * 1960-11-04 1962-09-25 Walter N Prince Drill
US3093420A (en) * 1961-09-08 1963-06-11 Fossil Fuels Inc Apparatus for feeding finely divided solids
US3132852A (en) * 1962-05-29 1964-05-12 Samuel H Dolbear Method for mining soluble mineral substances
US3385386A (en) 1963-09-24 1968-05-28 Gulf Research Development Co Hydraulic jet drill bit
US3374341A (en) * 1963-11-26 1968-03-19 Union Oil Co Method for controlling pressure differential resulting from fluid friction forces in well-drilling operations
US3322214A (en) * 1963-12-26 1967-05-30 Phillips Petroleum Co Drilling method and apparatus
US3380475A (en) 1965-06-24 1968-04-30 O B Armstrong & Son Gate valve
US3416614A (en) 1965-12-27 1968-12-17 Gulf Research Development Co Hydraulic jet drilling method using ferrous abrasives
US3424255A (en) * 1966-11-16 1969-01-28 Gulf Research Development Co Continuous coring jet bit
US3389759A (en) 1966-11-16 1968-06-25 Gulf Research Development Co Retrievable piston advance jet bits
US3542142A (en) 1968-09-27 1970-11-24 Gulf Research Development Co Method of drilling and drill bit therefor
US3469642A (en) * 1968-10-15 1969-09-30 Gulf Research Development Co Hydraulic drilling bit and nozzle
US3560053A (en) * 1968-11-19 1971-02-02 Exxon Production Research Co High pressure pumping system
US3548959A (en) 1969-07-10 1970-12-22 Gulf Research Development Co Relief-type jet bits
US3576221A (en) 1969-07-25 1971-04-27 Gulf Research Development Co High-density drilling liquid for hydraulic jet drilling
US3645346A (en) * 1970-04-29 1972-02-29 Exxon Production Research Co Erosion drilling
US3688852A (en) * 1970-08-24 1972-09-05 Gulf Research Development Co Spiral coil nozzle holder
US3688859A (en) 1970-10-08 1972-09-05 Fma Inc Vehicular air compression system
US3688853A (en) * 1971-03-01 1972-09-05 William C Maurer Method and apparatus for replacing nozzles in erosion bits
US3745346A (en) 1971-06-01 1973-07-10 Dresser Ind Circuit for reducing pulse pile-up in pulse direction systems by converting a random pulse train to that of fixed frequency
US3704966A (en) 1971-09-13 1972-12-05 Us Navy Method and apparatus for rock excavation
JPS5021765B2 (de) 1972-06-15 1975-07-25
US3831753A (en) 1972-12-18 1974-08-27 Gulf Research Development Co Slotted in-line screen
US3852200A (en) 1973-02-08 1974-12-03 Gulf Research Development Co Drilling liquid containing microcrystalline cellulose
US3838742A (en) * 1973-08-20 1974-10-01 Gulf Research Development Co Drill bit for abrasive jet drilling
US3924698A (en) 1974-04-08 1975-12-09 Gulf Research Development Co Drill bit and method of drilling
SE422967B (sv) 1975-09-19 1982-04-05 Atlas Copco Ab Sett och anordning for brytning av ett fast material
US4059166A (en) * 1976-07-12 1977-11-22 Fmc Corporation Subterranean drilling and slurry mining
US4042048A (en) 1976-10-22 1977-08-16 Willie Carl Schwabe Drilling technique
US4266621A (en) 1977-06-22 1981-05-12 Christensen, Inc. Well casing window mill
DE2814165C2 (de) * 1978-04-01 1980-04-30 Bochumer Eisenhuette Heintzmann Gmbh & Co, 4630 Bochum Hochdruckwasserdüse
US4391339A (en) * 1978-08-04 1983-07-05 Hydronautics, Incorporated Cavitating liquid jet assisted drill bit and method for deep-hole drilling
US4304609A (en) * 1980-02-28 1981-12-08 Morris James B N Drill cuttings treatment apparatus and method
US4361193A (en) 1980-11-28 1982-11-30 Mobil Oil Corporation Method and arrangement for improving cuttings removal and reducing differential pressure sticking of drill strings in wellbores
US4474251A (en) * 1980-12-12 1984-10-02 Hydronautics, Incorporated Enhancing liquid jet erosion
US4476027A (en) 1980-12-31 1984-10-09 Alvin Samuels Use of magnetic separation in scavenging hydrogen sulfide
US4414592A (en) * 1981-05-01 1983-11-08 Iomega Corporation Support for stabilizing the movement of a magnetic medium over a magnetic head
US4444277A (en) * 1981-09-23 1984-04-24 Lewis H Roger Apparatus and method for conditioning oil well drilling fluid
JPS5891452U (ja) * 1981-12-16 1983-06-21 稲葉　栄子 磁石濾過筒
US4490078A (en) * 1982-06-17 1984-12-25 Armstrong A L Gravel injection apparatus
US4492276A (en) 1982-11-17 1985-01-08 Shell Oil Company Down-hole drilling motor and method for directional drilling of boreholes
US4497598A (en) * 1982-11-19 1985-02-05 Chevron Research Company Method and apparatus for controlled rate feeding of fluidized solids
US4534427A (en) * 1983-07-25 1985-08-13 Wang Fun Den Abrasive containing fluid jet drilling apparatus and process
US4699548A (en) * 1983-12-19 1987-10-13 Howden Environmental Systems, Inc. Slurry conveying system
US4624327A (en) 1984-10-16 1986-11-25 Flowdril Corporation Method for combined jet and mechanical drilling
EP0192016B1 (de) * 1985-02-19 1988-12-28 Strata Bit Corporation Drehbohrmeissel
US4627502A (en) * 1985-07-18 1986-12-09 Dismukes Newton B Liquid-filled collar for tool string
ZA872710B (en) 1986-04-18 1987-10-05 Wade Oakes Dickinson Ben Iii Hydraulic drilling apparatus and method
US4768709A (en) 1986-10-29 1988-09-06 Fluidyne Corporation Process and apparatus for generating particulate containing fluid jets
US4809791A (en) * 1988-02-08 1989-03-07 The University Of Southwestern Louisiana Removal of rock cuttings while drilling utilizing an automatically adjustable shaker system
US4825963A (en) 1988-07-11 1989-05-02 Ruhle James L High-pressure waterjet/abrasive particle-jet coring method and apparatus
US5199512A (en) 1990-09-04 1993-04-06 Ccore Technology And Licensing, Ltd. Method of an apparatus for jet cutting
US5291957A (en) 1990-09-04 1994-03-08 Ccore Technology And Licensing, Ltd. Method and apparatus for jet cutting
US5542486A (en) 1990-09-04 1996-08-06 Ccore Technology & Licensing Limited Method of and apparatus for single plenum jet cutting
US5355967A (en) 1992-10-30 1994-10-18 Union Oil Company Of California Underbalance jet pump drilling method
US6345672B1 (en) 1994-02-17 2002-02-12 Gary Dietzen Method and apparatus for handling and disposal of oil and gas well drill cuttings
US5421420A (en) * 1994-06-07 1995-06-06 Schlumberger Technology Corporation Downhole weight-on-bit control for directional drilling
GB9517378D0 (en) 1995-08-24 1995-10-25 Sofitech Nv Hydraulic jetting system
JP3478914B2 (ja) * 1995-10-20 2003-12-15 株式会社日立製作所 流体噴射ノズル及びそのノズルを用いた応力改善処理方法
US5862871A (en) 1996-02-20 1999-01-26 Ccore Technology & Licensing Limited, A Texas Limited Partnership Axial-vortex jet drilling system and method
US5718298A (en) * 1996-04-10 1998-02-17 Rusnak; Jerry A. Separation system and method for separating the components of a drill bore exhaust mixture
US5799734A (en) * 1996-07-18 1998-09-01 Halliburton Energy Services, Inc. Method of forming and using particulate slurries for well completion
US5881830A (en) * 1997-02-14 1999-03-16 Baker Hughes Incorporated Superabrasive drill bit cutting element with buttress-supported planar chamfer
US6395187B1 (en) * 1998-10-01 2002-05-28 Noe Martinez Alanis Horizontal solids recycler
US6923273B2 (en) * 1997-10-27 2005-08-02 Halliburton Energy Services, Inc. Well system
US6904982B2 (en) 1998-03-27 2005-06-14 Hydril Company Subsea mud pump and control system
US6142248A (en) 1998-04-02 2000-11-07 Diamond Products International, Inc. Reduced erosion nozzle system and method for the use of drill bits to reduce erosion
US6216801B1 (en) * 1998-04-03 2001-04-17 American Polywater Corporation Method and apparatus for providing proportional injection of additives into drilling fluids
US6003623A (en) * 1998-04-24 1999-12-21 Dresser Industries, Inc. Cutters and bits for terrestrial boring
US6347675B1 (en) 1999-03-15 2002-02-19 Tempress Technologies, Inc. Coiled tubing drilling with supercritical carbon dioxide
US6152356A (en) * 1999-03-23 2000-11-28 Minden; Carl S. Hydraulic mining of tar sand bitumen with aggregate material
JP2001322229A (ja) 2000-05-17 2001-11-20 Riso Kagaku Corp 感熱孔版製版方法および感熱孔版製版装置および感熱孔版原紙の熱可塑性樹脂フィルム
US6530437B2 (en) * 2000-06-08 2003-03-11 Maurer Technology Incorporated Multi-gradient drilling method and system
US6386300B1 (en) 2000-09-19 2002-05-14 Curlett Family Limited Partnership Formation cutting method and system
CA2322304C (en) * 2000-10-04 2009-01-27 Surface To Surface Inc. Apparatus and method for recycling drilling slurry
US6702940B2 (en) * 2000-10-26 2004-03-09 Shell Oil Company Device for transporting particles of magnetic material
US6474418B2 (en) * 2000-12-07 2002-11-05 Frank's International, Inc. Wellbore fluid recovery system and method
EG23135A (en) * 2001-03-06 2004-04-28 Shell Int Research Jet cutting device with deflector
US6601650B2 (en) 2001-08-09 2003-08-05 Worldwide Oilfield Machine, Inc. Method and apparatus for replacing BOP with gate valve
CA2341925A1 (en) 2001-03-21 2002-09-21 Pancanadian Petroleum Limited Slurry recovery process
US6506310B2 (en) * 2001-05-01 2003-01-14 Del Corporation System and method for separating solids from a fluid stream
US6732797B1 (en) * 2001-08-13 2004-05-11 Larry T. Watters Method of forming a cementitious plug in a well
US6920945B1 (en) 2001-11-07 2005-07-26 Lateral Technologies International, L.L.C. Method and system for facilitating horizontal drilling
US7503407B2 (en) 2003-04-16 2009-03-17 Particle Drilling Technologies, Inc. Impact excavation system and method
US8342265B2 (en) 2003-04-16 2013-01-01 Pdti Holdings, Llc Shot blocking using drilling mud
US20090200080A1 (en) 2003-04-16 2009-08-13 Tibbitts Gordon A Impact excavation system and method with particle separation
US7383896B2 (en) 2003-04-16 2008-06-10 Particle Drilling Technologies, Inc. Impact excavation system and method with particle separation
US7398839B2 (en) * 2003-04-16 2008-07-15 Particle Drilling Technologies, Inc. Impact excavation system and method with particle trap
US7398838B2 (en) * 2003-04-16 2008-07-15 Particle Drilling Technologies, Inc. Impact excavation system and method with two-stage inductor
US7798249B2 (en) 2003-04-16 2010-09-21 Pdti Holdings, Llc Impact excavation system and method with suspension flow control
US7793741B2 (en) * 2003-04-16 2010-09-14 Pdti Holdings, Llc Impact excavation system and method with injection system
CA2522568C (en) 2003-04-16 2011-11-08 Particle Drilling, Inc. Drill bit
US7343987B2 (en) 2003-04-16 2008-03-18 Particle Drilling Technologies, Inc. Impact excavation system and method with suspension flow control
WO2004106693A2 (en) 2003-05-27 2004-12-09 Particle Drilling, Inc. Method and appartus for cutting earthen formations
US7090017B2 (en) * 2003-07-09 2006-08-15 Halliburton Energy Services, Inc. Low cost method and apparatus for fracturing a subterranean formation with a sand suspension
US7527095B2 (en) 2003-12-11 2009-05-05 Shell Oil Company Method of creating a zonal isolation in an underground wellbore
US20050275132A1 (en) 2004-06-15 2005-12-15 Eastman Kodak Company Belt over compliant roller used with molding roller
US7997355B2 (en) 2004-07-22 2011-08-16 Pdti Holdings, Llc Apparatus for injecting impactors into a fluid stream using a screw extruder
US7380617B1 (en) * 2005-12-06 2008-06-03 Triton Industries, Llc Drill cuttings handling apparatus
CA2588170A1 (en) 2006-05-09 2007-11-09 Particle Drilling Technologies, Inc. Impact excavation system and method with particle separation
US20090038856A1 (en) 2007-07-03 2009-02-12 Particle Drilling Technologies, Inc. Injection System And Method
WO2009009792A1 (en) 2007-07-12 2009-01-15 Particle Drilling Technologies, Inc. Injection system and method
US7987928B2 (en) 2007-10-09 2011-08-02 Pdti Holdings, Llc Injection system and method comprising an impactor motive device
US7980326B2 (en) 2007-11-15 2011-07-19 Pdti Holdings, Llc Method and system for controlling force in a down-hole drilling operation
WO2009099945A2 (en) 2008-02-01 2009-08-13 Particle Drilling Technologies, Inc. Methods of using a particle impact drilling system for removing near-borehole damage, milling objects in a wellbore, under reaming, coring, perforating, assisting annular flow, and associated methods

Also Published As

Publication number Publication date
EP1616071A2 (de) 2006-01-18
WO2004094734A2 (en) 2004-11-04
EP1616071B1 (de) 2011-01-26
NO20055409D0 (no) 2005-11-15
US7258176B2 (en) 2007-08-21
WO2004094734A3 (en) 2005-03-03
EP1616071A4 (de) 2006-05-10
US7909116B2 (en) 2011-03-22
CA2522568C (en) 2011-11-08
NO333751B1 (no) 2013-09-09
US20060027398A1 (en) 2006-02-09
CA2522568A1 (en) 2004-11-04
NO20055409L (no) 2005-11-15
US20060011386A1 (en) 2006-01-19

Similar Documents

Publication Publication Date Title
NO20055409D0 (no) Borkrone
NO20053650D0 (no) Nedihullsverktoy
DE602004003702D1 (de) Schlagbohrer
NO20020594L (no) Borkroneanordning
DE602004005310D1 (de) Bohrgestänge
SE0203900L (sv) Borr
NO20050454L (no) Fremgangsmate for boring
DE60308291D1 (de) Tiefbohrwerkzeug
NO20055133D0 (no) Hurtig forflyttbar borerigg
NO20034840L (no) Nedihulls verktoy
GB2403313B (en) Drill bit
DE602004015494D1 (de) Expandierbare bohrlochanordnung
DK1424152T3 (da) Værktöjsholder til kerneborekroner
NO20052812D0 (no) Styrbart borkronearrangement
DE502005005738D1 (de) Ausdrehwerkzeug
DE10394164D2 (de) Tieflochbohrer EB800
DE10394152D2 (de) Tieflochbohrer EB90
DK1387923T3 (da) Borekrone
DE602004027716D1 (de) Hochgeschwindigkeitsbohrer
DE50311365D1 (de) Bohrvorrichtung
DE50212781D1 (de) Bohrkrone
SE0403024L (sv) Borrningsverktyg
DE50304839D1 (de) Gesteinsbohrer
DE50202009D1 (de) Bohrkrone
DE60311070D1 (de) Bohrstrangelement