CA813213A - Downhole drilling apparatus - Google Patents

Downhole drilling apparatus

Info

Publication number
CA813213A
CA813213A CA813213A CA813213DA CA813213A CA 813213 A CA813213 A CA 813213A CA 813213 A CA813213 A CA 813213A CA 813213D A CA813213D A CA 813213DA CA 813213 A CA813213 A CA 813213A
Authority
CA
Canada
Prior art keywords
drilling apparatus
downhole drilling
downhole
drilling
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
CA813213A
Inventor
H. Cullen Roy
H. Elliott Charles
R. Aker Jimmie
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.)
Youngstown Sheet and Tube Co
Original Assignee
Youngstown Sheet and Tube Co
Publication date
Application granted granted Critical
Publication of CA813213A publication Critical patent/CA813213A/en
Expired legal-status Critical Current

Links

CA813213A Downhole drilling apparatus Expired CA813213A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA813213T

Publications (1)

Publication Number Publication Date
CA813213A true CA813213A (en) 1969-05-20

Family

ID=36285715

Family Applications (1)

Application Number Title Priority Date Filing Date
CA813213A Expired CA813213A (en) Downhole drilling apparatus

Country Status (1)

Country Link
CA (1) CA813213A (en)

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