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Rotary Drill Stem Elements
Published by American Petroleum Institute, 02/01/2023
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.
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|Publisher||American Petroleum Institute (API)|