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Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

Casing that is installed in a well to facilitate well control during drilling of the hole for the surface casing.  2, fiche 1, Anglais, - conductor%20casing

Record number: 1, Textual support number: 1 CONT

Conductor casing is installed first, usually prior to the arrival of the drilling rig. The hole for conductor casing is often drilled with a small auger drill, mounted on the back of a truck. Conductor casing, which is usually no more than 20 to 50 feet long, is installed to prevent the top of the well from caving in and to help in the process of circulating the drilling fluid up from the bottom of the well. Onshore, this casing is usually 16 to 20 inches in diameter while offshore casing usually measures 30 to 42 inches. The conductor casing is cemented into place before drilling begins.  3, fiche 1, Anglais, - conductor%20casing

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 DEF

Tubage mis en place dans un puits pour faciliter le contrôle du puits pendant le forage du trou où sera introduit le tubage de surface.  2, fiche 1, Français, - tubage%20initial

Record number: 1, Textual support number: 1 CONT

Lorsque des opérations de forage et des travaux connexes sont effectués au-dessous du tubage initial du puits, un déflecteur ou un système d'obturateurs anti-éruption doit être installé sur la tête du puits.  3, fiche 1, Français, - tubage%20initial

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 CONT

When mined out, the sublevel stope will be a rectangular opening across the orebody. The bottom of the stope is V-shaped to funnel the blasted material into the draw-points. Drilling drifts for the long-hole rig are prepared on the upper sublevels.  1, fiche 2, Anglais, - long%2Dhole%20rig

Fiche 2,  Justifications,  Français

Fiche 2,  Justifications,  Espagnol