Definition(s)
Rotary Shouldered Connection
A connection used on drill string elements which has coarse, tapered threads and sealing shoulders.
Source: API RP 7G, Recommended Practice for Drill Stem Design and Operating Limits, Upstream Segment, Sixteenth Edition, August 1998 (Addendum 2: September 2009). Global Standards
Rotary Shouldered Connection
Connection used on drill stem elements that have coarse, tapered threads and sealing shoulders.
Source: API RP 7G-2, Recommended Practice for Inspection and Classification of Used Drill Stem Elements, First Edition, August 2009. Global Standards
Rotary Shouldered Connection
Connection used on drill string elements which has tapered threads and sealing shoulders.
Source: API SPEC 5DP, Specification for Drill Pipe, First Edition, August 2009. Global Standards
Rotary Shouldered Connection
Connection used on drill stem elements, which has coarse, tapered threads and sealing shoulders.
Source: API SPEC 7-1, Specification for Rotary Drill Stem Elements, First Edition, March 2006 (Addendum April 2011). Global Standards