AU451466B2 - Dual concentric drillpipe - Google Patents

Dual concentric drillpipe

Info

Publication number
AU451466B2
AU451466B2 AU20458/70A AU2045870A AU451466B2 AU 451466 B2 AU451466 B2 AU 451466B2 AU 20458/70 A AU20458/70 A AU 20458/70A AU 2045870 A AU2045870 A AU 2045870A AU 451466 B2 AU451466 B2 AU 451466B2
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
AU2045870A (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 AU2045870A (en) 1972-03-30
AU451466B2 true AU451466B2 (en) 1972-03-30

Family

ID=

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