ZA71818B - Large diameter earth boring bit - Google Patents

Large diameter earth boring bit

Info

Publication number
ZA71818B
ZA71818B ZA710818A ZA71818A ZA71818B ZA 71818 B ZA71818 B ZA 71818B ZA 710818 A ZA710818 A ZA 710818A ZA 71818 A ZA71818 A ZA 71818A ZA 71818 B ZA71818 B ZA 71818B
Authority
ZA
South Africa
Prior art keywords
large diameter
earth boring
boring bit
diameter earth
bit
Prior art date
Application number
ZA710818A
Inventor
M Talbert
Original Assignee
Dresser Ind
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 Dresser Ind filed Critical Dresser Ind
Publication of ZA71818B publication Critical patent/ZA71818B/en

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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/28—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with non-expansible roller cutters
    • 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
    • E21B10/10—Roller bits with roller axle supported at both ends

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)
ZA710818A 1970-03-09 1971-02-09 Large diameter earth boring bit ZA71818B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1766370A 1970-03-09 1970-03-09

Publications (1)

Publication Number Publication Date
ZA71818B true ZA71818B (en) 1971-10-27

Family

ID=21783864

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA710818A ZA71818B (en) 1970-03-09 1971-02-09 Large diameter earth boring bit

Country Status (7)

Country Link
US (1) US3633691A (en)
JP (1) JPS526921B1 (en)
CA (1) CA931137A (en)
DE (1) DE2112420B2 (en)
FR (1) FR2081802B1 (en)
GB (1) GB1348670A (en)
ZA (1) ZA71818B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750767A (en) * 1971-05-24 1973-08-07 Hughes Tool Co Rolling cutter mounting in big hole reaming bit
ZA714204B (en) * 1971-06-28 1972-03-29 Mcdonnell P Ltd Improvements in or relating to rotary cutters
JPS5527657U (en) * 1978-08-11 1980-02-22
US4258805A (en) * 1979-08-27 1981-03-31 Dresser Industries, Inc. Low cutter load raise head
NO176528C (en) * 1992-02-17 1995-04-19 Kverneland Klepp As Device at drill bit

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1322696A (en) * 1918-10-29 1919-11-25 Howard R Hughes Rotary boring-drill.
US1826059A (en) * 1927-09-07 1931-10-06 Dunn William Tracy Drilling head
US2064273A (en) * 1935-04-22 1936-12-15 Hughes Tool Co Roller boring drill
US2122808A (en) * 1935-12-24 1938-07-05 Globe Oil Tools Co Rock bit
US2208530A (en) * 1938-02-03 1940-07-16 Thompson Tool Company Inc Rotary well drill
US2703698A (en) * 1951-09-17 1955-03-08 William J B Westerman Counterboring rotary drill
US3285355A (en) * 1964-02-17 1966-11-15 Smith Ind International Inc Large diameter well-drilling bit
US3437380A (en) * 1967-11-06 1969-04-08 Alkirk Inc Steering method and apparatus

Also Published As

Publication number Publication date
CA931137A (en) 1973-07-31
DE2112420B2 (en) 1978-11-02
DE2112420A1 (en) 1971-09-30
FR2081802A1 (en) 1971-12-10
US3633691A (en) 1972-01-11
JPS526921B1 (en) 1977-02-25
GB1348670A (en) 1974-03-20
FR2081802B1 (en) 1975-02-21

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