Trepan, Verb

Oil & Gas Drilling Glossary - IADCLexicon.org

Glossary

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Produce a hole through a part by boring a narrow band or groove around the circumference of the hole and removing the solid central core of material.

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

Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards

Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global Standards

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