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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A technique for drilling several horizontal wells from a single vertical, directional or horizontal wellbore.  1, record 1, English, - multiple%20entry

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Technique qui permet de forer plusieurs puits horizontaux à partir d'un même puits vertical, directionnel ou horizontal.  1, record 1, French, - entr%C3%A9e%20multiple

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

[Horizontal directional drilling should] be the preferred watercourse crossing method for avoiding in-stream works wherever there is the potential for disturbance of fish habitat.  3, record 2, English, - watercourse%20crossing

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

[...] le forage horizontal directionnel devrait être la méthode de franchissement de cours d'eau privilégiée pour éviter les travaux en eau vive, toutes les fois qu'il existe un potentiel de perturbation de l'habitat du poisson.  3, record 2, French, - franchissement%20de%20cours%20d%27eau

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

The HDD construction method is used to install pipelines beneath obstacles-such as stream crossings, lakes, coastal bluffs and road or railroad crossings where conventional open trench pipe construction techniques would cause unacceptable environmental disturbance or resource impacts. Using the continuous bore hole method, a HDD tunnels beneath surface obstacles and then pulls pipeline back through the underground tunnel, leaving the surface undisturbed. The HDD installation involves four main steps: pre-site planning, drilling the pilot hole, expanding pilot hole by reaming, and pullback of a pre-fabricated steel pipe string.  3, record 3, English, - horizontal%20directional%20drilling

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

Le forage directionnel horizontal est une technique de construction pour l'installation de conduites ou de câbles de petites dimensions ne nécessitant pas le creusage de tranchées. Elle s'est développée à partir des technologies de forage vertical principalement utilisées en industrie pétrolière.  4, record 3, French, - forage%20directionnel%20horizontal

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

The panel recommends that the National Energy Board, as a condition of any certificate or approvals it might issue in relation to the Mackenzie Gas Project, require the proponents to file, for approval, six months prior to the commencement of construction, detailed descriptions of :-installation procedures and limitations of using ditch plugs to mitigate groundwater flow along the pipeline ditch and horizontal directional drilling pathways...  3, record 4, English, - horizontal%20directional%20drilling%20pathway

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

La commission recommande que l'Office national de l'énergie, comme condition à tout certificat ou à toute autorisation qu'il pourrait délivrer en rapport avec le projet gazier Mackenzie, exige des promoteurs qu'ils déposent, pour approbation, six mois avant le début des travaux, une description détaillée des éléments suivants : - Les procédures d'installation et les limites liées à l'utilisation de barrages de fossés pour atténuer le débit des eaux souterraines le long des tranchées du pipeline et des tracés du forage dirigé horizontal [...]  3, record 4, French, - trac%C3%A9%20du%20forage%20dirig%C3%A9%20horizontal

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

They noted that accidental release of [horizontal directional drilling] mud would not likely adversely impact water quality because it would stay bound together in a gel-like suspension when mixed with water and would eventually settle out.  2, record 5, English, - gel%2Dlike%20suspension

Record 5,  Textual support,  French

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

The proponents propose three types of watercourse crossing techniques : open cut, isolated and [horizontal directional drilling]. Open-cut and isolated crossing techniques involve excavation and in-stream work. HDD crossings leave the bed and banks undisturbed and, therefore, avoid adverse impacts on aquatic habitat.  2, record 6, English, - horizontal%20directional%20drilling%20crossing

Record 6,  Textual support,  French

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

The feasibility of [horizontal directional drilling] crossings depends on geotechnical and geological conditions under the stream bed and in the approach slopes, and on the depth and width of the river valley.  2, record 7, English, - approach%20slope

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 CONT

La faisabilité des franchissements de forage directionnel horizontal dépend des conditions géotechniques et géologiques sous le lit des cours d'eau, de la pente d'approche et de la profondeur et de la largeur de la vallée du cours d'eau.  2, record 7, French, - pente%20d%27approche

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 CONT

The most recent methods being used to install conduits under roadways, pipe ramming, microtunneling, and horizontal directional drilling, are not always addressed in DOT [Department of Transportation] specifications. A survey of state DOTs indicated that states’ experience with trenchless technology varies considerably.  2, record 8, English, - pipe%20ramming

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 DEF

Technique permettant l'installation en continu de conduites de différents diamètres sur de petites distances à l'aide d'un marteau pneumatique.  1, record 8, French, - fon%C3%A7age

Record number: 8, Textual support number: 1 OBS

L'utilisation de cette technique entraîne des vibrations importantes dans le sol et est très bruyante.  1, record 8, French, - fon%C3%A7age

Record 8,  Textual support,  Spanish