JPS526921B1 - - Google Patents

Info

Publication number
JPS526921B1
JPS526921B1 JP46012746A JP1274671A JPS526921B1 JP S526921 B1 JPS526921 B1 JP S526921B1 JP 46012746 A JP46012746 A JP 46012746A JP 1274671 A JP1274671 A JP 1274671A JP S526921 B1 JPS526921 B1 JP S526921B1
Authority
JP
Japan
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.)
Pending
Application number
JP46012746A
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 filed Critical
Publication of JPS526921B1 publication Critical patent/JPS526921B1/ja
Pending 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
    • E21B10/26—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)
JP46012746A 1970-03-09 1971-03-09 Pending JPS526921B1 (ja)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
JPS526921B1 true JPS526921B1 (ja) 1977-02-25

Family

ID=21783864

Family Applications (1)

Application Number Title Priority Date Filing Date
JP46012746A Pending JPS526921B1 (ja) 1970-03-09 1971-03-09

Country Status (7)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5527657U (ja) * 1978-08-11 1980-02-22

Families Citing this family (4)

* 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
US4258805A (en) * 1979-08-27 1981-03-31 Dresser Industries, Inc. Low cutter load raise head
NO176528C (no) * 1992-02-17 1995-04-19 Kverneland Klepp As Anordning ved borekroner

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5527657U (ja) * 1978-08-11 1980-02-22

Also Published As

Publication number Publication date
CA931137A (en) 1973-07-31
DE2112420B2 (de) 1978-11-02
DE2112420A1 (de) 1971-09-30
FR2081802A1 (ja) 1971-12-10
ZA71818B (en) 1971-10-27
US3633691A (en) 1972-01-11
GB1348670A (en) 1974-03-20
FR2081802B1 (ja) 1975-02-21

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