CA780163A - Borehole apparatus valves - Google Patents

Borehole apparatus valves

Info

Publication number
CA780163A
CA780163A CA780163A CA780163DA CA780163A CA 780163 A CA780163 A CA 780163A CA 780163 A CA780163 A CA 780163A CA 780163D A CA780163D A CA 780163DA CA 780163 A CA780163 A CA 780163A
Authority
CA
Canada
Prior art keywords
borehole apparatus
apparatus valves
valves
borehole
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
CA780163A
Inventor
O. Berryman William
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.)
Schlumberger Well Surveying Corp
Original Assignee
Schlumberger Well Surveying Corp
Publication date
Application granted granted Critical
Publication of CA780163A publication Critical patent/CA780163A/en
Expired legal-status Critical Current

Links

CA780163A Borehole apparatus valves Expired CA780163A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA780163T

Publications (1)

Publication Number Publication Date
CA780163A true CA780163A (en) 1968-03-12

Family

ID=36242853

Family Applications (1)

Application Number Title Priority Date Filing Date
CA780163A Expired CA780163A (en) Borehole apparatus valves

Country Status (1)

Country Link
CA (1) CA780163A (en)

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