ZA812279B - Method and means in earth drilling - Google Patents

Method and means in earth drilling

Info

Publication number
ZA812279B
ZA812279B ZA00812279A ZA812279A ZA812279B ZA 812279 B ZA812279 B ZA 812279B ZA 00812279 A ZA00812279 A ZA 00812279A ZA 812279 A ZA812279 A ZA 812279A ZA 812279 B ZA812279 B ZA 812279B
Authority
ZA
South Africa
Prior art keywords
earth drilling
drilling
earth
Prior art date
Application number
ZA00812279A
Inventor
G Soederstroem
E Persson
Original Assignee
Sandvik Canada
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 Sandvik Canada filed Critical Sandvik Canada
Publication of ZA812279B publication Critical patent/ZA812279B/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
    • E21B10/08—Roller bits
    • E21B10/10—Roller bits with roller axle supported at both ends
    • 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
    • E21B10/20—Roller bits characterised by detachable or adjustable parts, e.g. legs or axles
    • 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)
  • Drilling Tools (AREA)
ZA00812279A 1980-05-30 1981-04-03 Method and means in earth drilling ZA812279B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8004039A SE8004039L (en) 1980-05-30 1980-05-30 DRILL SET AND DEVICE

Publications (1)

Publication Number Publication Date
ZA812279B true ZA812279B (en) 1982-04-28

Family

ID=20341086

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00812279A ZA812279B (en) 1980-05-30 1981-04-03 Method and means in earth drilling

Country Status (7)

Country Link
AU (1) AU6903981A (en)
BR (1) BR8103266A (en)
DE (1) DE3114927A1 (en)
NO (1) NO811818L (en)
SE (2) SE8004039L (en)
ZA (1) ZA812279B (en)
ZM (1) ZM4581A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO176528C (en) * 1992-02-17 1995-04-19 Kverneland Klepp As Device at drill bit
CN110748298B (en) * 2019-11-15 2022-03-18 四川石油天然气建设工程有限责任公司 Reamer with self-righting guide function
CN114776223A (en) * 2022-04-20 2022-07-22 泰山学院 Drilling and expansion combined type rock breaking hole-expanding cutter head of raise boring machine and rock breaking method

Also Published As

Publication number Publication date
NO811818L (en) 1981-12-01
BR8103266A (en) 1982-02-16
ZM4581A1 (en) 1981-12-21
DE3114927A1 (en) 1982-02-25
AU6903981A (en) 1981-12-03
SE8004039L (en) 1981-12-01
SE8102752L (en) 1981-12-01

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