API 7-1 : 2006/ADD 4 : 2019
Superseded
View Superseded by
SPECIFICATION FOR ROTARY DRILL STEM ELEMENTS
English
02-01-2019
07-20-2020
Describes requirements for the following drill stem elements: upper and lower kelly valves; square and hexagonal kellys; drill stem subs; standard steel and non-magnetic drill collars; drilling and coring bits.
| DevelopmentNote |
NEW CHILD ERR 1 IS ADDED
|
| DocumentType |
Standard
|
| Pages |
0
|
| ProductNote |
NEW CHILD ERR 1 IS ADDED
|
| PublisherName |
American Petroleum Institute
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
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