Rotary Drill Stem Elements

2nd Edition

Published by American Petroleum Institute, 02/01/2023


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API 7-1, 2nd Edition – Rotary Drill Stem Elements

This standard specifies the technical delivery conditions for rotary drill stem elements: upper and lower kelly valves, square and hexagonal kellys, drill stem subs, drill collars (steel and non-magnetic, round, and spiral), heavy-weight drill pipe (HWDP), drilling and coring bit connections, and stabilizers.

API 7-1 is not applicable to drill pipe and tool joints, rotary shouldered connection designs, thread gauging practices, or grand master, reference master and working gauges, and does not include or identify performance properties. A typical drill stem assembly applicable to this standard is provided.

General Product Information:

Revision 2nd Edition
Document Type PDF
Pages 125
Document Language English
Publisher American Petroleum Institute (API)
Status Current


Document History