BR8700047A - Broca de perfuracao - Google Patents

Broca de perfuracao

Info

Publication number
BR8700047A
BR8700047A BR8700047A BR8700047A BR8700047A BR 8700047 A BR8700047 A BR 8700047A BR 8700047 A BR8700047 A BR 8700047A BR 8700047 A BR8700047 A BR 8700047A BR 8700047 A BR8700047 A BR 8700047A
Authority
BR
Brazil
Prior art keywords
drilling drill
drill
drilling
Prior art date
Application number
BR8700047A
Other languages
English (en)
Inventor
Walter F Johnsey
Donald D Drummond
Roy W Wood
Original Assignee
Drumco
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 Drumco filed Critical Drumco
Publication of BR8700047A publication Critical patent/BR8700047A/pt

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
    • E21B10/08—Roller bits
    • E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
    • E21B10/24—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details

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)
BR8700047A 1986-01-13 1987-01-08 Broca de perfuracao BR8700047A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81832686A 1986-01-13 1986-01-13

Publications (1)

Publication Number Publication Date
BR8700047A true BR8700047A (pt) 1987-12-01

Family

ID=25225263

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8700047A BR8700047A (pt) 1986-01-13 1987-01-08 Broca de perfuracao

Country Status (6)

Country Link
EP (1) EP0230129A1 (pt)
AU (1) AU6743787A (pt)
BR (1) BR8700047A (pt)
CA (1) CA1264318A (pt)
MX (1) MX160907A (pt)
ZA (1) ZA87174B (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2055399A1 (en) * 1991-11-13 1993-05-14 Kenneth M. White Indicating means for a rock bit lubricating system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125175A (en) * 1964-03-17 figure
US2814464A (en) * 1953-01-02 1957-11-26 Engineering Lab Inc Air course drill bits
US3029881A (en) * 1959-06-09 1962-04-17 H C Smith Oil Tool Co Bit lubricator
US3924695A (en) * 1974-10-02 1975-12-09 John R Kennedy Rotary drilling method and apparatus
US4080091A (en) * 1976-11-03 1978-03-21 Reed Tool Company Drill bit
US4375242A (en) * 1980-08-11 1983-03-01 Hughes Tool Company Sealed and lubricated rock bit with air protected seal ring
US4386668A (en) * 1980-09-19 1983-06-07 Hughes Tool Company Sealed lubricated and air cooled rock bit bearing
US4541494A (en) * 1982-10-19 1985-09-17 Drumco Drill bit assembly
EP0106701A3 (en) * 1982-10-19 1986-02-05 Drumco Method and apparatus for lubricating a drill bit

Also Published As

Publication number Publication date
AU6743787A (en) 1987-07-16
ZA87174B (en) 1987-08-26
CA1264318A (en) 1990-01-09
EP0230129A1 (en) 1987-07-29
MX160907A (es) 1990-06-06

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