SE8300385L - REMOVABLE CORE DRILL - Google Patents

REMOVABLE CORE DRILL

Info

Publication number
SE8300385L
SE8300385L SE8300385A SE8300385A SE8300385L SE 8300385 L SE8300385 L SE 8300385L SE 8300385 A SE8300385 A SE 8300385A SE 8300385 A SE8300385 A SE 8300385A SE 8300385 L SE8300385 L SE 8300385L
Authority
SE
Sweden
Prior art keywords
cylindrical body
cutter elements
inward
spreader device
outward movement
Prior art date
Application number
SE8300385A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE455326B (en
SE8300385D0 (en
Inventor
N D Nenkov
Original Assignee
Komitet Geol
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 Komitet Geol filed Critical Komitet Geol
Publication of SE8300385D0 publication Critical patent/SE8300385D0/en
Publication of SE8300385L publication Critical patent/SE8300385L/en
Publication of SE455326B publication Critical patent/SE455326B/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
    • E21B10/64—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
    • E21B10/66—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe the cutting element movable through the drilling pipe and laterally shiftable
    • 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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
    • E21B25/02—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
    • 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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
    • E21B25/02—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
    • E21B25/04—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe the core receiver having a core forming cutting edge or element, e.g. punch type core barrels

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)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

There is disclosed a removable core drill for use in geological prospecting and comprising a hollow cylindrical body (2), a drill bit (1) connected to the lower end of the cylindrical body (2), a latching device (9, 12) connected to the upper end of the cylindrical body (2), cutter elements (5) pivotally connected to the cylindrical body (2) and positioned intermediate the upper and lower ends thereof for inward and outward movement relative to the longitudinal axis of the cylindrical body (2) between retracted positions and operating positions, and a spreader device (8) which is movable longitudinally within the cylindrical body. The spreader device moves between an upper disengaged position and a lower position of engagement with the cutter elements, and causes outward movement and inward movement of the cutter elements as the spreader device moves respectively to and from the lower engaged position. The spreader device (8) is held in either of its upper and lower positions by engagement therewith of the latching device (9, 12). Slots (13) are formed in the wall of the cylindrical body (2) to permit the inward and outward movement of the cutter elements (5). <IMAGE>
SE8300385A 1983-02-04 1983-01-26 REMOVABLE CORE DRILL EQUIPMENT SE455326B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8301772A FR2540549B3 (en) 1983-02-04 1983-02-04 REMOVABLE CORE BIT

Publications (3)

Publication Number Publication Date
SE8300385D0 SE8300385D0 (en) 1983-01-26
SE8300385L true SE8300385L (en) 1984-07-27
SE455326B SE455326B (en) 1988-07-04

Family

ID=9285610

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8300385A SE455326B (en) 1983-02-04 1983-01-26 REMOVABLE CORE DRILL EQUIPMENT

Country Status (4)

Country Link
BE (1) BE895797A (en)
FR (1) FR2540549B3 (en)
GB (1) GB2134153B (en)
SE (1) SE455326B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2575785B1 (en) * 1985-01-04 1987-12-11 Rech Geolog Miniere DRILLING APPARATUS HAVING A DEVICE FOR CHANGING THE DRILLING TOOL WITHOUT HAVING TO ROLL UP THE ROD RUNNER AND INCLUDING AN EXPANDABLE BORING DEVICE
AU5974686A (en) * 1985-07-09 1987-01-15 Diamant Boart (Uk) Ltd. Core sampling drilling device

Also Published As

Publication number Publication date
FR2540549B3 (en) 1985-12-06
SE455326B (en) 1988-07-04
GB2134153B (en) 1986-02-12
GB2134153A (en) 1984-08-08
FR2540549A1 (en) 1984-08-10
SE8300385D0 (en) 1983-01-26
GB8302288D0 (en) 1983-03-02
BE895797A (en) 1983-05-30

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