NO156952C - BoreskjŸr med jevnt fordelte stŸlinnsatser. - Google Patents

BoreskjŸr med jevnt fordelte stŸlinnsatser.

Info

Publication number
NO156952C
NO156952C NO811356A NO811356A NO156952C NO 156952 C NO156952 C NO 156952C NO 811356 A NO811356 A NO 811356A NO 811356 A NO811356 A NO 811356A NO 156952 C NO156952 C NO 156952C
Authority
NO
Norway
Prior art keywords
evenly distributed
steel inserts
distributed steel
drilling
sheets
Prior art date
Application number
NO811356A
Other languages
English (en)
Other versions
NO156952B (no
NO811356L (no
Inventor
Rudolf Carl Otto Pessier
Rodolfo M Ippolito
Billy E Baker
Original Assignee
Hughes Tool Co
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 Hughes Tool Co filed Critical Hughes Tool Co
Publication of NO811356L publication Critical patent/NO811356L/no
Publication of NO156952B publication Critical patent/NO156952B/no
Publication of NO156952C publication Critical patent/NO156952C/no

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
    • E21B10/46—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
    • E21B10/52—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type with chisel- or button-type inserts
    • 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
    • E21B10/16—Roller bits characterised by tooth form or arrangement

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)
  • Excavating Of Shafts Or Tunnels (AREA)
NO811356A 1980-06-23 1981-04-22 BoreskjŸr med jevnt fordelte stŸlinnsatser. NO156952C (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16197780A 1980-06-23 1980-06-23

Publications (3)

Publication Number Publication Date
NO811356L NO811356L (no) 1981-12-28
NO156952B NO156952B (no) 1987-09-14
NO156952C true NO156952C (no) 1987-12-23

Family

ID=22583644

Family Applications (1)

Application Number Title Priority Date Filing Date
NO811356A NO156952C (no) 1980-06-23 1981-04-22 BoreskjŸr med jevnt fordelte stŸlinnsatser.

Country Status (8)

Country Link
JP (1) JPS5715796A (no)
AU (1) AU543784B2 (no)
CA (1) CA1154752A (no)
DE (1) DE3117268A1 (no)
GB (1) GB2078826B (no)
NO (1) NO156952C (no)
SE (1) SE448015B (no)
ZA (1) ZA812521B (no)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29907492U1 (de) * 1999-04-29 2000-09-28 Wirth Co Kg Masch Bohr Werkzeug zum Lösen von Erdreich

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2230569A (en) * 1939-12-20 1941-02-04 Globe Oil Tools Co Roller cutter
US2774571A (en) * 1954-07-06 1956-12-18 Hughes Tool Co Cone type well drill
US3726350A (en) * 1971-05-24 1973-04-10 Hughes Tool Co Anti-tracking earth boring drill
US3871488A (en) * 1974-02-13 1975-03-18 Daniel R Sabre Rock drilling
US4187922A (en) * 1978-05-12 1980-02-12 Dresser Industries, Inc. Varied pitch rotary rock bit

Also Published As

Publication number Publication date
SE448015B (sv) 1987-01-12
GB2078826A (en) 1982-01-13
CA1154752A (en) 1983-10-04
AU543784B2 (en) 1985-05-02
DE3117268A1 (de) 1982-04-15
NO156952B (no) 1987-09-14
NO811356L (no) 1981-12-28
AU6961581A (en) 1982-01-07
DE3117268C2 (no) 1991-06-06
JPH0258433B2 (no) 1990-12-07
SE8102397L (sv) 1981-12-24
GB2078826B (en) 1983-12-07
JPS5715796A (en) 1982-01-27
ZA812521B (en) 1982-04-28

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