CA630100A - Dual passage drill strings - Google Patents

Dual passage drill strings

Info

Publication number
CA630100A
CA630100A CA630100A CA630100DA CA630100A CA 630100 A CA630100 A CA 630100A CA 630100 A CA630100 A CA 630100A CA 630100D A CA630100D A CA 630100DA CA 630100 A CA630100 A CA 630100A
Authority
CA
Canada
Prior art keywords
drill strings
dual passage
passage drill
dual
strings
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
CA630100A
Inventor
B. Grable Donovan
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.)
GAS DRILLING SERVICES CO
Original Assignee
GAS DRILLING SERVICES CO
Publication date
Application granted granted Critical
Publication of CA630100A publication Critical patent/CA630100A/en
Expired legal-status Critical Current

Links

CA630100A Dual passage drill strings Expired CA630100A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA630100T

Publications (1)

Publication Number Publication Date
CA630100A true CA630100A (en) 1961-10-31

Family

ID=35886237

Family Applications (1)

Application Number Title Priority Date Filing Date
CA630100A Expired CA630100A (en) Dual passage drill strings

Country Status (1)

Country Link
CA (1) CA630100A (en)

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