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Oilfield Glossary
Oilfield Glossary
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Tools

through-tubing gun

1. n. [Perforating]
A perforating gun assembly designed to run through the restricted clearance of production tubing, then operate effectively within the larger diameter of the casing or liner below. A range of small-diameter guns has been developed for this purpose, although small-diameter casing guns also may be used when larger production tubing sizes permit.