AU2045870A - Dual concentric drillpipe - Google Patents

Dual concentric drillpipe

Info

Publication number
AU2045870A
AU2045870A AU20458/70A AU2045870A AU2045870A AU 2045870 A AU2045870 A AU 2045870A AU 20458/70 A AU20458/70 A AU 20458/70A AU 2045870 A AU2045870 A AU 2045870A AU 2045870 A AU2045870 A AU 2045870A
Authority
AU
Australia
Prior art keywords
drillpipe
dual concentric
concentric
dual
concentric drillpipe
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
AU20458/70A
Other versions
AU451466B2 (en
Inventor
Sherman Chapman Harold
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.)
Harold Sherman Chapman And Can-Tex Drilling & Exploration Ltd
Original Assignee
Harold Sherman Chapman And Can-Tex Drilling & Exploration 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
Application filed by Harold Sherman Chapman And Can-Tex Drilling & Exploration Ltd filed Critical Harold Sherman Chapman And Can-Tex Drilling & Exploration Ltd
Application granted granted Critical
Publication of AU2045870A publication Critical patent/AU2045870A/en
Publication of AU451466B2 publication Critical patent/AU451466B2/en
Expired legal-status Critical Current

Links

AU20458/70A 1970-08-25 1970-09-29 Dual concentric drillpipe Expired AU451466B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CACA091,441 1970-08-25

Publications (2)

Publication Number Publication Date
AU2045870A true AU2045870A (en) 1972-03-30
AU451466B2 AU451466B2 (en) 1972-03-30

Family

ID=

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