ZM4581A1 - Method and means in earth drilling - Google Patents

Method and means in earth drilling

Info

Publication number
ZM4581A1
ZM4581A1 ZM45/81A ZM4581A ZM4581A1 ZM 4581 A1 ZM4581 A1 ZM 4581A1 ZM 45/81 A ZM45/81 A ZM 45/81A ZM 4581 A ZM4581 A ZM 4581A ZM 4581 A1 ZM4581 A1 ZM 4581A1
Authority
ZM
Zambia
Prior art keywords
earth drilling
drilling
earth
Prior art date
Application number
ZM45/81A
Other languages
English (en)
Original Assignee
Sandvik Ab
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 Ab filed Critical Sandvik Ab
Publication of ZM4581A1 publication Critical patent/ZM4581A1/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
    • E21B10/08—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)
ZM45/81A 1980-05-30 1981-05-28 Method and means in earth drilling ZM4581A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8004039A SE8004039L (sv) 1980-05-30 1980-05-30 Sett och anordning vid borrning

Publications (1)

Publication Number Publication Date
ZM4581A1 true ZM4581A1 (en) 1981-12-21

Family

ID=20341086

Family Applications (1)

Application Number Title Priority Date Filing Date
ZM45/81A ZM4581A1 (en) 1980-05-30 1981-05-28 Method and means in earth drilling

Country Status (7)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO176528C (no) * 1992-02-17 1995-04-19 Kverneland Klepp As Anordning ved borekroner
CN110748298B (zh) * 2019-11-15 2022-03-18 四川石油天然气建设工程有限责任公司 一种具有自扶正引导功能的扩孔器
CN114776223A (zh) * 2022-04-20 2022-07-22 泰山学院 一种钻胀组合式破岩的反井钻机扩孔刀盘及破岩方法

Also Published As

Publication number Publication date
ZA812279B (en) 1982-04-28
AU6903981A (en) 1981-12-03
BR8103266A (pt) 1982-02-16
DE3114927A1 (de) 1982-02-25
SE8004039L (sv) 1981-12-01
SE8102752L (sv) 1981-12-01
NO811818L (no) 1981-12-01

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