DK113561B - Extension drill rod for percussion drilling. - Google Patents

Extension drill rod for percussion drilling.

Info

Publication number
DK113561B
DK113561B DK352666A DK352666A DK113561B DK 113561 B DK113561 B DK 113561B DK 352666 A DK352666 A DK 352666A DK 352666 A DK352666 A DK 352666A DK 113561 B DK113561 B DK 113561B
Authority
DK
Denmark
Prior art keywords
drill rod
percussion drilling
extension drill
extension
percussion
Prior art date
Application number
DK352666A
Other languages
Danish (da)
Inventor
H Fischer
J Hjaelsten
Original Assignee
Sandvikens Jernverks 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 Sandvikens Jernverks Ab filed Critical Sandvikens Jernverks Ab
Publication of DK113561B publication Critical patent/DK113561B/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded
    • E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods
DK352666A 1965-07-08 1966-07-07 Extension drill rod for percussion drilling. DK113561B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE900965 1965-07-08

Publications (1)

Publication Number Publication Date
DK113561B true DK113561B (en) 1969-04-08

Family

ID=20275593

Family Applications (1)

Application Number Title Priority Date Filing Date
DK352666A DK113561B (en) 1965-07-08 1966-07-07 Extension drill rod for percussion drilling.

Country Status (7)

Country Link
AT (1) AT269777B (en)
BE (1) BE683860A (en)
CH (1) CH492116A (en)
DE (1) DE1483863A1 (en)
DK (1) DK113561B (en)
GB (1) GB1120388A (en)
NL (1) NL6609441A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3730286A (en) * 1972-06-29 1973-05-01 Exxon Production Research Co Apparatus for improving rotary drilling operations
CA1029365A (en) * 1975-03-03 1978-04-11 Lloyd B. Hansen Method and apparatus for roof drilling
GB9512250D0 (en) * 1995-06-16 1995-08-16 Boart Longyear Ltd A drill string
DE29614490U1 (en) * 1996-08-21 1996-11-21 Roehrenwerk Kupferdreh Carl Ha Probing device, especially for the investigation of soil and contaminated sites
ITMI20071992A1 (en) * 2007-10-16 2009-04-17 Foxley Ventures Llc TUBE FOR ROTO-PERCUSSION

Also Published As

Publication number Publication date
DE1483863A1 (en) 1970-03-05
GB1120388A (en) 1968-07-17
NL6609441A (en) 1967-01-09
AT269777B (en) 1969-04-10
CH492116A (en) 1970-06-15
BE683860A (en) 1966-12-16

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