GB900099A - Improvements in or relating to boring crowns - Google Patents

Improvements in or relating to boring crowns

Info

Publication number
GB900099A
GB900099A GB2456759A GB2456759A GB900099A GB 900099 A GB900099 A GB 900099A GB 2456759 A GB2456759 A GB 2456759A GB 2456759 A GB2456759 A GB 2456759A GB 900099 A GB900099 A GB 900099A
Authority
GB
United Kingdom
Prior art keywords
crown
scavenging
grooves
involute
curved
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
Application number
GB2456759A
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.)
Salzgitter Maschinen AG
Original Assignee
Salzgitter Maschinen AG
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 Salzgitter Maschinen AG filed Critical Salzgitter Maschinen AG
Publication of GB900099A publication Critical patent/GB900099A/en
Expired 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
    • E21B10/00—Drill bits
    • E21B10/02—Core bits
    • E21B10/04—Core bits with core destroying means
    • 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
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • 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
    • E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
    • 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
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • E21B10/605—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a core-bit

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

900,099. Diamond tools. SALZGITTER MASCHINEN A.G. July 17, 1959 [Aug. 22, 1958], No.24567/59. Class 124. [Also in Group XXI] A boring crown having wear resistant cutting bodies, e.g. diamonds, comprises involute-like curved scavenging grooves provided between involute-like curved cutting surfaces, the scavenging grooves increasing in width and depth from the centre outwardly and, at each cross-sectional point, the grooves being wider than the cutting surfaces. As shown, the crown has involute-like curved scavenging grooves 3 separating cutting surfaces 6 in which diamonds 8 are embedded. The crown is also provided with a core removal opening 9 leading obliquely to the upper part 11 of the crown and having a core breaking insert 10 of, for example, hard metal. Part of the scavenging liquid is fed to the core removal opening from the liquid supply passage 2.
GB2456759A 1958-08-22 1959-07-17 Improvements in or relating to boring crowns Expired GB900099A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES59530A DE1083763B (en) 1958-08-22 1958-08-22 Full drill bit

Publications (1)

Publication Number Publication Date
GB900099A true GB900099A (en) 1962-07-04

Family

ID=7493379

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2456759A Expired GB900099A (en) 1958-08-22 1959-07-17 Improvements in or relating to boring crowns

Country Status (3)

Country Link
DE (1) DE1083763B (en)
FR (1) FR1232026A (en)
GB (1) GB900099A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3301339A (en) * 1964-06-19 1967-01-31 Exxon Production Research Co Drill bit with wear resistant material on blade
US3552505A (en) * 1968-11-22 1971-01-05 American Coldset Corp Core bit and core crusher apparatus
US3743036A (en) * 1971-05-10 1973-07-03 Shell Oil Co Diamond bit with annular mud distributing groove
DE3147099A1 (en) * 1980-12-01 1982-07-01 Christensen, Inc., 84115 Salt Lake City, Utah "TURNING WORKING DRILL BIT"
GB2117289A (en) * 1982-03-24 1983-10-12 Nat Res Dev Grinding tools
EP0872624A2 (en) * 1997-04-16 1998-10-21 Camco International (UK) Limited Improvements in or relating to rotary drill bits
WO1999023345A2 (en) * 1997-10-31 1999-05-14 Weatherford/Lamb, Inc. Mill for use in a wellbore and method of milling
GB2355035A (en) * 1999-10-06 2001-04-11 Baker Hughes Inc Rotary drag bit having rotationally raked or angled blades and gauge pads
AU2021206897A1 (en) * 2021-05-21 2022-12-08 Boart Longyear Company Continuous sampling drill bit

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1197407B (en) * 1961-04-27 1965-07-29 Inst Francais Du Petrol Solid drill bits for drilling at high speeds
US3127946A (en) * 1961-05-01 1964-04-07 Carroll L Deely Drill bit
US3215215A (en) * 1962-08-27 1965-11-02 Exxon Production Research Co Diamond bit
DE1226962B (en) * 1963-05-28 1966-10-20 Aquitaine Petrole Full rotary drill bit with flat jet nozzles
DE3822249A1 (en) * 1988-07-01 1990-01-04 Hilti Ag HOLLOW DRILLING TOOL

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3301339A (en) * 1964-06-19 1967-01-31 Exxon Production Research Co Drill bit with wear resistant material on blade
US3552505A (en) * 1968-11-22 1971-01-05 American Coldset Corp Core bit and core crusher apparatus
US3743036A (en) * 1971-05-10 1973-07-03 Shell Oil Co Diamond bit with annular mud distributing groove
DE3147099A1 (en) * 1980-12-01 1982-07-01 Christensen, Inc., 84115 Salt Lake City, Utah "TURNING WORKING DRILL BIT"
US4352400A (en) 1980-12-01 1982-10-05 Christensen, Inc. Drill bit
GB2117289A (en) * 1982-03-24 1983-10-12 Nat Res Dev Grinding tools
US5967246A (en) * 1995-10-10 1999-10-19 Camco International (Uk) Limited Rotary drill bits
US6092613A (en) * 1995-10-10 2000-07-25 Camco International (Uk) Limited Rotary drill bits
US5992547A (en) * 1995-10-10 1999-11-30 Camco International (Uk) Limited Rotary drill bits
US6024168A (en) 1996-01-24 2000-02-15 Weatherford/Lamb, Inc. Wellborne mills & methods
EP0872624A3 (en) * 1997-04-16 1999-04-14 Camco International (UK) Limited Improvements in or relating to rotary drill bits
EP0872624A2 (en) * 1997-04-16 1998-10-21 Camco International (UK) Limited Improvements in or relating to rotary drill bits
WO1999023345A3 (en) * 1997-10-31 1999-07-08 Weatherford Lamb Mill for use in a wellbore and method of milling
WO1999023345A2 (en) * 1997-10-31 1999-05-14 Weatherford/Lamb, Inc. Mill for use in a wellbore and method of milling
GB2355035A (en) * 1999-10-06 2001-04-11 Baker Hughes Inc Rotary drag bit having rotationally raked or angled blades and gauge pads
US6302223B1 (en) 1999-10-06 2001-10-16 Baker Hughes Incorporated Rotary drag bit with enhanced hydraulic and stabilization characteristics
GB2355035B (en) * 1999-10-06 2004-04-14 Baker Hughes Inc Rotary drag bit with enhanced hydraulic and stabilization characteristics
AU2021206897A1 (en) * 2021-05-21 2022-12-08 Boart Longyear Company Continuous sampling drill bit
AU2021206897B2 (en) * 2021-05-21 2023-06-08 Boart Longyear Company Continuous sampling drill bit

Also Published As

Publication number Publication date
FR1232026A (en) 1960-10-05
DE1083763B (en) 1960-06-23

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