Composition and method for dissipating heat underground

Details Composition and method for dissipating heat underground Composition and method for dissipating heat underground

C - Chemistry, Metallurgy

09

K

C09K 8/05 (2006.01) E21B 36/00 (2006.01)

Patent

CA 2603687

A substantially sand-free, aqueous-based, bentonitic fluid comprising flaked graphite can help dissipate heat from operation of electrical lines buried underground. The fluid is used in drilling a borehole, such as in trenchless drilling, or in making a trench, for receiving and containing the lines. The fluid may also be applied directly to the outside and/or to the inside of pipe containing electrical lines. Thermal conductivities having values of about 1.6 to about 1.8 BTU/hr ft~F or higher can be attained.

Cette invention concerne un fluide bentotinique à base d'eau, sensiblement exempt de sable, qui favorise l'évacuation de la chaleur dégagée par des lignes électriques enterrées. Ce fluide s'utilise lors du forage d'un puits, notamment par technologie sans tranchées, ou lors de l'ouverture d'une tranchée destinée à recevoir et à abriter des lignes électriques. Ledit fluide peut aussi être appliqué directement à l'extérieur ou à l'intérieur d'un conduit renfermant des fils électriques. Des valeurs de conductivité thermique comprises entre environ 1,6 et 1,8 BTU/h pied °F ou plus peuvent être atteintes.

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