AU474335B2 - A thread system for extension drill rod connections - Google Patents

A thread system for extension drill rod connections

Info

Publication number
AU474335B2
AU474335B2 AU21337/70A AU2133770A AU474335B2 AU 474335 B2 AU474335 B2 AU 474335B2 AU 21337/70 A AU21337/70 A AU 21337/70A AU 2133770 A AU2133770 A AU 2133770A AU 474335 B2 AU474335 B2 AU 474335B2
Authority
AU
Australia
Prior art keywords
drill rod
thread system
rod connections
extension drill
extension
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
AU21337/70A
Other versions
AU2133770A (en
Inventor
Czarnecki Bengt Rolf Soderman Fader
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sandco Ltd
Original Assignee
Sandco Ltd
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
Priority claimed from SE14444/69A external-priority patent/SE336316B/xx
Application filed by Sandco Ltd filed Critical Sandco Ltd
Application granted granted Critical
Publication of AU474335B2 publication Critical patent/AU474335B2/en
Publication of AU2133770A publication Critical patent/AU2133770A/en
Expired legal-status Critical Current

Links

AU21337/70A 1969-10-22 1970-10-21 A thread system for extension drill rod connections Expired AU474335B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE14444/69A SE336316B (en) 1969-10-22 1969-10-22
SESE14444/0 1969-10-22

Publications (2)

Publication Number Publication Date
AU474335B2 true AU474335B2 (en) 1972-04-27
AU2133770A AU2133770A (en) 1972-04-27

Family

ID=

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