Definition(s)
Drilling Spool
Pressure-containing piece of equipment having end connections with or without side outlet connections, used below or between drill-through equipment.
Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards
Drilling Spool
Pressure-containing piece of equipment having end connections and outlets, used below or between drill-through equipment.
Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global Standards
Source: API STD 53, Blowout Prevention Equipment Systems for Drilling Wells, Upstream Segment, Fourth Edition, November 2012. Global Standards
Drilling Spool
A flanged joint placed between the BOP and casing-head or between BOPs that serve as a spacer or crossover.
Source: API RP 59, Recommended Practice for Well Control Operations, Second Edition, May 2006. Global Standards
Drilling Spool
A flanged joint placed between the BOP and casing-head that serves as a spacer or crossover.
Source: API RP 64, Recommended Practice for Diverter Systems Equipment and Operations, Second Edition, November 2001 (March 1, 2007). Global Standards
Drilling Spool
Pressure-containing piece of equipment having end connections, used below or between drill-through equipment. NOTE When outlet connections are provided, they shall be manufactured in accordance with this American National Standard.
Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global Standards
Drilling Spool
BOP stack connection, with flanged ends, used as a spacer between bop equipment, may or may not have side outlets for connection to auxiliary lines.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards