TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A method of drilling past obstructions in a well, i.e. lost tools, pipe or other material blocking the hole.  3, record 1, English, - sidetracking

Record number: 1, Textual support number: 1 OBS

[Sidetracking] can be done with the use of a whipstock, a down-hole tool which forces the drill bit to drill at a slight angle from the vertical. By beginning the deviation of the hole several hundred feet around the junk in the original hole, the new hole will bypass the obstruction and may be taken on down to the pay zone.  3, record 1, English, - sidetracking

Record number: 1, Textual support number: 2 OBS

Sidetracking is also done to deepen a well or to relocate the bottom of the well in a more productive zone, which is horizontally removed from the original well.  4, record 1, English, - sidetracking

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Forage d'un nouveau puits, généralement dirigé, à partir d'un niveau déterminé d'un trou déjà foré.  4, record 1, French, - d%C3%A9viation

Record number: 1, Textual support number: 1 OBS

La déviation s'impose notamment lorsque le forage initial n'a pas atteint l'objectif géologique visé, ou quand un «poisson» qu'il a été impossible de «repêcher» interdit la continuation normale du forage.  4, record 1, French, - d%C3%A9viation

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

Down-hole percussive drills... consist primarily of a string of drill rods attached to a percussion drill bit at the bottom of the hole. However, instead of the mechanical energy being transmitted to the bit from the surface of the hole via the entire string of rods, the power unit is located "down the hole" immediately above the bit, thus eliminating energy loss through friction of the drill string against the shaft walls and through the threaded connections of the drill rods.  1, record 2, English, - down%2Dthe%2Dhole%20percussion%20drill

Record number: 2, Textual support number: 1 OBS

In 1952 the first down-the-hole percussion drill... designed by Andre Stenuick, with a drilling diameter of 10 cm(4 in) was produced in Belgium.  1, record 2, English, - down%2Dthe%2Dhole%20percussion%20drill

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

Les marteaux fond de trou. Les marteaux-perforateurs classiques transmettent l'énergie de destruction de la roche par l'intermédiaire du train de tige. D'où des pertes d'énergie non négligeables dues à l'élasticité de ce train de tige et à son poids lorsque la foration se fait en montant. Parfois il y a des déviations importantes du trou foré. Une solution très originale est parfois employée. Le marteau cylindrique est descendu dans le trou et assure ainsi une frappe directe, d'autant plus efficace que la pression d'air comprimé est plus importante. L'air comprimé est amené au marteau par le train de tige lui-même qui assurera par ailleurs la rotation de l'ensemble : marteau + taillant.  1, record 2, French, - marteau%20fond%20de%20trou

Record number: 2, Textual support number: 1 OBS

Chariot de foration Stenuik pour marteaux fond de trou.  1, record 2, French, - marteau%20fond%20de%20trou

Record 2,  Textual support,  Spanish