TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

A percussion tool that operates on a mechanical or hydraulic principle and is designed to deliver a heavy hammer blow to objects in the borehole to which it is attached.  3, fiche 1, Anglais, - jar

Record number: 1, Textual support number: 1 CONT

Jars are used for such purposes as freeing stuck objects in the hole in fishing operations or imparting a jarring motion to stuck tubing or drill pipe for the purpose of freeing it.  3, fiche 1, Anglais, - jar

Record number: 1, Textual support number: 1 OBS

The design of the jar often permits blows to be delivered in either a downward or upward direction, with control being effected at the surface.  3, fiche 1, Anglais, - jar

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 DEF

Instrument intercalé dans les tiges de forage et permettant de leur imprimer des chocs violents en cas de coincement.  4, fiche 1, Français, - coulisse

Fiche 1,  Justifications,  Espagnol