ZM6880A1 - Low cutter load raise head - Google Patents

Low cutter load raise head

Info

Publication number
ZM6880A1
ZM6880A1 ZM68/80A ZM6880A ZM6880A1 ZM 6880 A1 ZM6880 A1 ZM 6880A1 ZM 68/80 A ZM68/80 A ZM 68/80A ZM 6880 A ZM6880 A ZM 6880A ZM 6880 A1 ZM6880 A1 ZM 6880A1
Authority
ZM
Zambia
Prior art keywords
cutter load
raise head
low cutter
load raise
low
Prior art date
Application number
ZM68/80A
Other languages
English (en)
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 ZM6880A1 publication Critical patent/ZM6880A1/xx

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
    • E21B10/12—Roller bits with discs 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/28—Enlarging drilled holes, e.g. by counterboring

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
ZM68/80A 1979-08-27 1980-08-18 Low cutter load raise head ZM6880A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/069,964 US4258805A (en) 1979-08-27 1979-08-27 Low cutter load raise head

Publications (1)

Publication Number Publication Date
ZM6880A1 true ZM6880A1 (en) 1981-09-21

Family

ID=22092281

Family Applications (1)

Application Number Title Priority Date Filing Date
ZM68/80A ZM6880A1 (en) 1979-08-27 1980-08-18 Low cutter load raise head

Country Status (5)

Country Link
US (1) US4258805A (fr)
AU (1) AU530542B2 (fr)
CA (1) CA1134807A (fr)
ZA (1) ZA804721B (fr)
ZM (1) ZM6880A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5366029A (en) * 1993-04-09 1994-11-22 Beck Iii August H Large shaft over-reamer apparatus and method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1841302A (en) * 1927-05-18 1932-01-12 Richard P Simmons Well drilling apparatus
US1745567A (en) * 1928-04-26 1930-02-04 Andrew B Cross Means for operating well-boring drills
US2837324A (en) * 1955-04-04 1958-06-03 West Canadian Collieries Ltd Apparatus for drilling large holes between galleries
US2868510A (en) * 1955-12-30 1959-01-13 Charles A Dean Under-reamers
US3379264A (en) * 1964-11-05 1968-04-23 Dravo Corp Earth boring machine
US3633691A (en) * 1970-03-09 1972-01-11 Dresser Ind Large-diameter earth boring bit
US3750767A (en) * 1971-05-24 1973-08-07 Hughes Tool Co Rolling cutter mounting in big hole reaming bit
CA1038854A (fr) * 1975-02-27 1978-09-19 Western Rock Bit Company Limited Tariere de creusage du sol

Also Published As

Publication number Publication date
AU6132280A (en) 1981-03-05
ZA804721B (en) 1981-07-29
US4258805A (en) 1981-03-31
CA1134807A (fr) 1982-11-02
AU530542B2 (en) 1983-07-21

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