CA829154A - Drilling methods and apparatus employing pressure variations in a drilling fluid - Google Patents

Drilling methods and apparatus employing pressure variations in a drilling fluid

Info

Publication number
CA829154A
CA829154A CA829154A CA829154DA CA829154A CA 829154 A CA829154 A CA 829154A CA 829154 A CA829154 A CA 829154A CA 829154D A CA829154D A CA 829154DA CA 829154 A CA829154 A CA 829154A
Authority
CA
Canada
Prior art keywords
drilling
apparatus employing
pressure variations
employing pressure
methods
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
CA829154A
Inventor
M. Galle Edward
B. Woods Henry
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.)
Hughes Tool Co
Original Assignee
Hughes Tool Co
Publication date
Application granted granted Critical
Publication of CA829154A publication Critical patent/CA829154A/en
Expired legal-status Critical Current

Links

CA829154A Drilling methods and apparatus employing pressure variations in a drilling fluid Expired CA829154A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA829154T

Publications (1)

Publication Number Publication Date
CA829154A true CA829154A (en) 1969-12-09

Family

ID=36306609

Family Applications (1)

Application Number Title Priority Date Filing Date
CA829154A Expired CA829154A (en) Drilling methods and apparatus employing pressure variations in a drilling fluid

Country Status (1)

Country Link
CA (1) CA829154A (en)

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