AU5973969A - Expandable percussion drill bit - Google Patents

Expandable percussion drill bit

Info

Publication number
AU5973969A
AU5973969A AU59739/69A AU5973969A AU5973969A AU 5973969 A AU5973969 A AU 5973969A AU 59739/69 A AU59739/69 A AU 59739/69A AU 5973969 A AU5973969 A AU 5973969A AU 5973969 A AU5973969 A AU 5973969A
Authority
AU
Australia
Prior art keywords
expandable
drill bit
percussion drill
percussion
bit
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
AU59739/69A
Other versions
AU454109B2 (en
Inventor
Eugene Bardwell Allen
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 filed Critical
Priority to AU5973969A priority Critical patent/AU454109B2/xx
Publication of AU5973969A publication Critical patent/AU5973969A/en
Application granted granted Critical
Publication of AU454109B2 publication Critical patent/AU454109B2/xx
Expired legal-status Critical Current

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
    • E21B10/00—Drill bits
    • E21B10/36—Percussion drill bits
    • E21B10/40—Percussion drill bits with leading portion
    • 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
    • E21B10/00—Drill bits
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
AU5973969A 1969-08-20 1969-08-20 Expired AU454109B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU5973969A AU454109B2 (en) 1969-08-20 1969-08-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU5973969A AU454109B2 (en) 1969-08-20 1969-08-20

Publications (2)

Publication Number Publication Date
AU5973969A true AU5973969A (en) 1971-02-25
AU454109B2 AU454109B2 (en) 1974-10-04

Family

ID=3744977

Family Applications (1)

Application Number Title Priority Date Filing Date
AU5973969A Expired AU454109B2 (en) 1969-08-20 1969-08-20

Country Status (1)

Country Link
AU (1) AU454109B2 (en)

Also Published As

Publication number Publication date
AU454109B2 (en) 1974-10-04

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