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Oil & Gas Drilling Glossary - IADCLexicon.org

Glossary

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Pressure-containing piece of equipment having end connections, used below or between drill-through equipment.

NOTE: A spool is used to provide separation between two components with equal-sized end connections.

Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global Standards

A spool used to provide separation between two components with equal sized end connections.

Source: API STD 53, Blowout Prevention Equipment Systems for Drilling Wells, Upstream Segment, Fourth Edition, November 2012. Global Standards

Used in underbalance operations to adjust height of stack and components on assembly, and to raise or lower height of flow line.

Source: IADC UBO / MPD Glossary, December 2011. Global Standards

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