TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A rotary boring bit consisting of two to four-cone-shaped, toothed rollers which are turned by the rotation of the drill rods. They are used in hard rock in oil well boring and other deep holes down to 15,000 feet and more. Although their penetration speed is somewhat slow, roller bits last longer which is a very important factor in deep drilling.  2, record 1, English, - roller%20bit

Record number: 1, Textual support number: 1 CONT

In rolling cutter bits, the cone type bits currently manufactured have three cutters or two cutters. For general overall use the bit with three cones is a better balanced bit.  6, record 1, English, - roller%20bit

Record number: 1, Textual support number: 1 OBS

Roller-cone bits are also called rock bits. The surface of each cone is made up of rows of steel or tungsten carbide teeth or rows of tungsten carbide inserts. Tungsten carbide insert bits are usually used to drill extremely hard formations.  5, record 1, English, - roller%20bit

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

L'action combinée du poids et de la rotation permet aux dents des trépans à molettes d'écailler la roche [...]  3, record 1, French, - tr%C3%A9pan%20%C3%A0%20molettes

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

A drilling tool for cutting through rock.  7, record 2, English, - bit

Record number: 2, Textual support number: 1 CONT

In rotary drilling ... there are two basic types of bit. The rolling-cutter bit shears, chips or grinds the rock as the drill string is rotated; the drag bit and the diamond bit scrape or grind.  7, record 2, English, - bit

Record number: 2, Textual support number: 2 CONT

There are three principal kinds of bits used in rotary drilling: roller-cone bits (rock bits), diamond bits, and fishtail bits (drag bits).  8, record 2, English, - bit

Record number: 2, Textual support number: 3 CONT

The earliest type of drilling bit was the percussion bit for cable-tool drilling.  8, record 2, English, - bit

Record number: 2, Textual support number: 1 OBS

In the oil and gas industry the use of the word "bit" dates from the time when percussion drilling was general practice and has since been extended to describe the tool employed in rotary drilling. There is a great variety of drilling tools.  9, record 2, English, - bit

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Outil qui, dans un sondage, attaque le terrain sur tout le fond du trou.  4, record 2, French, - tr%C3%A9pan

Record number: 2, Textual support number: 1 CONT

[...] le procédé de forage rotary [...] consiste à utiliser des trépans à molettes dentées ou des trépans diamantés, sur lesquels on appuie et que l'on fait tourner. L'action combinée du poids et de la rotation permet aux dents des trépans à molettes d'écailler la roche ou aux trépans diamantés de strier et détruire celle-ci.  5, record 2, French, - tr%C3%A9pan

Record number: 2, Textual support number: 1 OBS

«outil» : D'apparence peu technique, ce terme est néanmoins utilisé par les spécialistes du domaine sur le même pied que trépan.  6, record 2, French, - tr%C3%A9pan

Record number: 2, Textual support number: 2 OBS

Dans l'industrie du pétrole, l'usage du mot trépan remonte à l'époque où l'on forait par battage, puis il s'est étendu aux outils de forage par rotation. Il existe une grande variété de trépans.  7, record 2, French, - tr%C3%A9pan

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 DEF

Herramienta que se fija en el extremo inferior del vástago o varillaje de una sonda y que muerde en la roca con los dientes de sus rodillos, si se trata de un tricono, o con su revestimiento de diamantes, si es una corona sacamuestras.  1, record 2, Spanish, - tr%C3%A9pano